PAGEMART WIRELESS INC
10-K405, 1999-03-31
RADIOTELEPHONE COMMUNICATIONS
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                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                         ------------------------------
 
                                   FORM 10-K
 
<TABLE>
<C>              <S>
   (MARK ONE)
 
        X        ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF
      ----       THE SECURITIES EXCHANGE ACT OF 1934 [FEE REQUIRED]
                 FOR THE FISCAL YEAR ENDED DECEMBER 31, 1998
 
                                              OR
 
      ----       TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF
                 THE SECURITIES EXCHANGE ACT OF 1934 [NO FEE REQUIRED]
                 FOR THE TRANSITION PERIOD FROM ------------ TO ------------
</TABLE>
 
                          COMMISSION FILE NO. 0-28196
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                            PAGEMART WIRELESS, INC.
               (Exact name of registrant as specified in charter)
 
<TABLE>
<S>                                            <C>
                   DELAWARE                                           75-2575229
       (State or other jurisdiction of                             (I.R.S. Employer
        incorporation or organization)                          Identification Number)
</TABLE>
 
                          3333 LEE PARKWAY, SUITE 100
                              DALLAS, TEXAS 75219
                    (Address of principal executive offices)
 
      (Registrant's telephone number, including area code): (214) 765-4000
                         ------------------------------
        SECURITIES REGISTERED PURSUANT TO SECTION 12(b) OF THE ACT: NONE
 
          SECURITIES REGISTERED PURSUANT TO SECTION 12(g) OF THE ACT:
 
                              TITLE OF EACH CLASS
                                ---------------
 
               Class A Common Stock, par value $0.0001 per share
                         ------------------------------
     Indicate by check mark whether the registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
registrant was required to file such reports), and (2) has been subject to
filing requirements for the past 90 days.  Yes [X]   No [ ]
 
     Indicate by check mark if disclosure of delinquent filers pursuant to Item
405 of Regulation S-K is not contained herein, and will not be contained, to the
best of registrant's knowledge, in definitive proxy or information statements
incorporated by reference in Part III of this Form 10-K or any amendment to this
Form 10-K.  [X]
 
     The aggregate market value of the voting stock held by non-affiliates of
the Registrant, based upon the closing sale price of the Class A Common Stock on
January 29, 1999 as reported on the Nasdaq National Market System, was
approximately $55,951,992. Shares of Common Stock held by each executive officer
and director and by each person who owns 5% or more of the outstanding Common
Stock have been excluded in that such persons may be deemed to be affiliates.
This determination of affiliate status for this purpose is not necessarily a
conclusive determination for other purposes.
 
     As of January 29, 1999, there were 34,536,512; 3,809,363; 1,428,472 and
623,945 shares of the Registrant's Class A, Class B, Class C and Class D common
stock outstanding, respectively.
 
                      DOCUMENTS INCORPORATED BY REFERENCE:
 
     Portions of the Registrant's Proxy Statement for its Annual Meeting of
Shareholders scheduled to be held on May 12, 1999 are incorporated by reference
into Part III (items 11, 12 and 13) hereof.
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                                     PART I
 
ITEM 1. BUSINESS
 
     Unless the context otherwise requires, references to "the Company" are to
PageMart Wireless, Inc. and its subsidiaries on a consolidated basis. References
to "PageMart Wireless" are to PageMart Wireless, Inc. on a non-consolidated
basis. References to "PageMart, Inc." are to PageMart, Inc., a wholly-owned
subsidiary of PageMart Wireless that was merged into PageMart Wireless on
January 28, 1998.
 
FORWARD LOOKING STATEMENTS
 
     This Form 10-K and the Annual Report to Stockholders contains statements
that constitute forward-looking statements. The words "estimate," "project,"
"plan," "expect," "believe" and similar expressions are intended to identify
forward-looking statements. Readers are cautioned that such forward-looking
statements involve risks and uncertainties, and are subject to change based on
various important factors. The factors set forth herein under "Risk Factors", in
other filings with the Securities Exchange Commission and the following factors,
among others, in some cases have affected and in the future could affect the
Company's financial performance and could cause actual results to differ
materially from those expressed in such forward-looking statements: economic
conditions and consumer confidence generally in the United States; the ability
of the Company to manage its high outstanding indebtedness; the impact of
technological change in the telecommunications industry; the future cost of
network infrastructure and subscriber equipment; the impact of competition and
pricing of paging and wireless messaging services; the timely development and
acceptance of new products; changes in regulation by the Federal Communications
Commission ("FCC") and various state regulatory agencies; potential technical
problems relating to the Company's transmission network for advanced messaging
services; and the cost and ability of the Company and third parties upon whose
products and services the Company depends to be Year 2000 ready in a timely
manner. See "Risk Factors."
 
GENERAL
 
     The Company is the sixth largest wireless messaging carrier in the United
States, based on 2,651,004 units in service at December 31, 1998. In recent
years the Company has been one of the fastest growing providers of traditional
one-way paging and messaging services nationwide. During 1998, the Company
focused its attention on constructing the network infrastructure necessary to
add narrowband personal communications services ("PCS") capabilities to its
existing one-way network. Narrowband PCS permits the delivery of advanced
messaging services such as two-way messaging and guaranteed or assured
messaging. This effort achieved a significant milestone in December 1998 with
the introduction of nationwide guaranteed messaging service.
 
     Since the founding of the Company in 1989, it has been an innovative leader
in the traditional paging business. The Company built its strategy around the
concepts of exclusive nationwide frequencies, flexible network architecture, and
centralized control of the network and administrative functions. The strategy
was aimed at providing efficient and flexible traditional paging services on a
single frequency nationwide and internationally. This strategy put the Company
in a position to capitalize on distribution channels that demanded
single-frequency nationwide service and centralized customer service and
distribution. The result was rapid subscriber growth that was generated
internally rather than through the acquisition of other paging carriers.
 
     As the market for traditional paging services matures, the Company is
moving aggressively to become a leader in the market for advanced messaging
services, an arena that the Company believes will be the next growth market for
wireless messaging carriers. The Company is only the second wireless messaging
carrier to deploy a nationwide narrowband PCS network for advanced messaging
services. The Company invested approximately $128 million in 1998 to construct
and deploy its nationwide narrowband PCS network, which the Company believes is
the wireless industry's most comprehensive. The Company expects to spend
approximately $40 million in 1999 to complete the addition of narrowband PCS
capabilities to its network, expand its network geographically and make other
enhancements. The Company's operations now comprise of
 
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a highly efficient nationwide network delivering traditional one-way paging and
state of the art advanced messaging services. Because both types of services are
delivered on the same network, references in this report to the traditional
one-way paging network or the narrowband PCS network are used to distinguish
when the network is used for delivery of one-way paging services or advanced
messaging services, respectively.
 
     The Company now is composed of two businesses at very different points in
their business life cycle. Through its PageMart Paging division, the Company
offers traditional one-way local, multi-city, statewide, regional and nationwide
paging and other wireless services in all 50 states, covering approximately 90%
of the population of the United States. At December 31, 1998, the Company had
approximately 2,618,527 traditional paging service subscribers in the United
States. This is a maturing business generating free cash flow (i.e. cash flow in
excess of capital expenditures) and not requiring further significant capital
investments.
 
     In contrast, through its PageMart PCS division, the Company offers local
and nationwide guaranteed messaging service covering over 70% of the United
States population at December 31, 1998. In the first four months of 1999, the
Company expects to expand its service to all 50 states covering approximately
90% of the population. Later in the year, the Company expects to introduce
additional advanced messaging services, including full two-way messaging. See
"Products and Services." This is a business in the early stage of its
development, and the Company expects it to be a consumer of cash for the next
several years as it goes through a period of rapid growth.
 
     The Company also provides its U.S. domestic customers with seamless
traditional one-way paging services across the Americas, including Canada,
Mexico, much of the Caribbean and Central America, and parts of South America.
Through direct ownership in Canada and network affiliation agreements with
owners of foreign networks, the Company's network is interconnected with foreign
networks operating on a common frequency, thus providing roaming capabilities
for the Company's customers in the foreign countries and for the customers of
the foreign network in the United States. In 1998, the Company expanded services
into Guatemala, Costa Rica, Haiti, the Cayman Islands and the Dominican Republic
through network affiliation agreements with leading telecommunications companies
in those countries. The Company expects to expand services into Colombia,
Trinidad and Tobago, Honduras, Peru and Venezuela in 1999.
 
     The Company charges subscribers a fee that covers the paging and messaging
services purchased by the subscriber. The amount of the fee varies, based
primarily on the type of service provided, the amount of usage and the
geographic area covered. The Company charges higher rates for service options
providing more than local coverage.
 
BUSINESS AND OPERATING STRATEGY
 
     The Company has experienced increased demand for alphanumeric messaging
services and wide area coverage. These are trends that the Company believes span
the entire industry. Narrowband PCS networks are designed to efficiently deliver
nationwide alphanumeric messaging services at lower operating costs relative to
the current costs of delivering similar one-way alphanumeric messages at
comparable network utilization levels. See "Transmission Network." The Company
expects strategies employing narrowband PCS networks to capture significant
amounts of the projected paging and messaging industry growth because of their
anticipated ability to deliver greater network capacity, new services, higher
quality and improved reliability compared to existing one-way networks.
 
     The Company believes it is well positioned to take advantage of this
projected growth. In the narrowband PCS auctions conducted by the FCC, the
Company acquired licenses for a total of 100kHz of forward frequency and 50kHz
of return frequency nationwide (the "narrowband PCS Licenses"). The Company is
one of three companies in the United States with 150kHz or more of narrowband
PCS frequency nationwide. The Company's narrowband PCS network employs the
ReFLEX25(R) protocol, which is a second generation ReFLEX(R) technology
developed by Motorola, Inc. ("Motorola") that is compatible with the FLEX(TM)
protocol employed in the Company's existing one-way network. This has enabled
the Company to integrate narrowband PCS capabilities into its existing one-way
network, allowing the Company to build its narrowband PCS network rapidly and
substantially increase its network capacity in the most cost effective manner.
When
 
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completed, the Company's narrowband PCS network will cover substantially the
same "footprint", or geographic coverage area, as its existing one-way network.
 
     The Company believes that the industry growth rate for traditional paging
services is slowing. As a result, the Company expects its future growth will
come principally from the advanced messaging services business rather than its
traditional one-way paging business. The Company expects that the six following
operating principles, to which the Company attributes the significant growth of
its traditional paging business, will be equally important as the market for
advanced messaging services continues to develop. The Company has positioned
itself to utilize these principles in its advanced messaging business.
 
     DIVERSIFIED DISTRIBUTION CHANNELS. The Company utilizes a number of
distribution channels to market its current products and services, including
marketing directly to individuals, corporations and other organizations through
its national accounts sales force and the sales force in the Company's sales
offices, and indirectly through strategic alliances with large communications
providers, national and regional retailers, and regional and local resellers.
See "Sales and Marketing."
 
     Management believes that a diversified approach to distribution is
important to sustain growth as messaging services more deeply penetrate the
United States population, especially the consumer market. This diversification
is a key element of the Company's strategy of expanding its subscriber base to
increase profitability and cash flow through greater utilization of its
nationwide wireless communication network.
 
     NATIONWIDE, NAFTA AND BEYOND COMMON FREQUENCY. The Company has constructed
its network on common one-way and narrowband PCS frequencies nationwide. Use of
common frequencies provides the Company with a number of important strategic
advantages not available to many of its competitors, which operate on multiple
frequencies across markets. The use of a common frequency across the United
States enables the Company's customers to travel throughout the United States
while continuing to use the same subscriber unit. In addition, the use of a
common one-way frequency has been expanded NAFTA-wide and beyond into Canada,
Mexico, Central and South America, the Caribbean and the Bahamas. Through the
use of network affiliation agreements, the Company is able to provide multi-city
coverage customized to accommodate the customers' needs throughout North and
Central America and in parts of South America.
 
     The common frequency approach also provides a competitive advantage to the
Company when marketing its services to regional and national retailers and
private brand telecommunications carriers. The Company's subscriber units can be
sold in any retail store located in the Company's nationwide coverage area
because they operate on a common nationwide frequency. By contrast, competitors
that use multiple frequencies across markets require retailers to maintain many
more stock keeping units to serve each local market that utilizes a different
frequency.
 
     EFFICIENT NETWORK ARCHITECTURE. The Company is an industry leader in the
implementation of advanced telecommunications technologies, including pioneering
the use of direct broadcast satellite ("DBS") technology for paging. The
Company's nationwide network is 100% controlled by DBS technology, which gives
the Company a flexible, reliable and efficient network architecture. The use of
DBS technology eliminates the need for expensive terrestrial radio frequency
("RF") control links and repeater equipment while enabling the Company to
provide a wide range of coverage options. The Company used its efficient one-way
network as the outbound transmission infrastructure for the narrowband PCS
network, which allowed the Company to add narrowband PCS capabilities rapidly
and substantially increase its network capacity in the most cost effective
manner. As it constructed the narrowband PCS network, the Company installed very
small aperture satellite terminal ("VSAT") equipment in the network in order to
permit two-way communication using DBS technology.
 
     The Company's one-way network covers the top 300 MSAs across the United
States, or approximately 90% of the total population in the United States. The
Company's network is 100% FLEX(R) enabled, allowing the use of the high speed
FLEX(R) protocol to transmit one-way paging messages and maximize system
capacity. The one-way networks included in the Company's NAFTA and beyond
coverage are also 100% FLEX(R) enabled. The Company's narrowband PCS network is
integrated into the one-way network. The design of the narrowband PCS network is
based upon Motorola's ReFLEX25(R) technology. At December 31,
 
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1998, the Company's nationwide narrowband PCS network covered over 70% of the
population in the United States.
 
     SPECTRUM-RICH FREQUENCY POSITION. The Company ranks among the top four
paging carriers in the United States in licensed nationwide frequencies. The
Company's exclusive frequency licenses include two nationwide one-way paging
frequencies and 150 kHz of nationwide NPCS frequency. The Company believes that
this frequency position has important strategic value because it enables the
Company to grow its subscriber base by introducing advanced messaging and other
value-added services to its subscribers. As a result, the Company believes its
spectrum-rich frequency position enables it to attract and retain national
retail and private brand strategic alliance partners.
 
     CENTRALIZED ADMINISTRATION. The Company has centralized information
systems, inventory control, distribution, customer service, finance and
marketing functions, which can support both the Company's traditional paging and
advanced messaging services. This centralized administration has enabled the
Company to become one of the lowest cost providers of paging and other wireless
communications services in the United States relative to the services it
provides. In addition, the administrative infrastructure is designed to support
a larger customer base than that currently served by the Company, which will
allow it to realize additional operating efficiency as the Company continues to
grow.
 
     CUSTOMER SERVICE CAPABILITIES. Management has focused on developing
industry-leading customer service capabilities which are designed to be used for
both one-way and advanced messaging services and can be expanded as the customer
base grows. At December 31, 1998, the Company employed approximately 940 highly
trained customer service personnel operating in state of the art call center
facilities. Management believes that high-quality customer service capabilities
are an important factor in supporting and retaining its strategic alliance
partners, retailers and subscribers.
 
PRODUCTS AND SERVICES
 
     TRADITIONAL ONE-WAY MESSAGING SERVICES. The Company currently offers the
following two basic types of one-way paging and messaging services.
 
<TABLE>
<CAPTION>
               SERVICE                                      DESCRIPTION
               -------                                      -----------
<S>                                    <C>
Numeric paging.......................  Provides the subscriber with the telephone number of
                                       the person who is seeking to contact the subscriber.
                                       Numeric pagers can store and retrieve up to 40
                                       numeric messages, which are displayed on a liquid
                                       crystal display.
Alphanumeric paging..................  Offers the subscriber the ability to receive a text
                                       message rather than simply a numeric message.
                                       Alphanumeric pagers can store and retrieve up to 40
                                       messages of up to 80 characters each, which are
                                       displayed on a liquid crystal display.
</TABLE>
 
     Numeric Paging Services. Although most subscribers select local coverage,
the number of subscribers who select extended city coverage options continues to
increase. Monthly fees for regional and nationwide paging coverage are
substantially higher than the fees charged for single local area coverage.
 
     Alphanumeric Paging Services. The Company provides alphanumeric paging
services under the tradenames InfoPage(R) and InfoNow(SM), and the number of
subscribers utilizing the service represented 6.2% of the Company's total
subscribers at December 31, 1998. The Company has not focused a significant
portion of its selling and marketing efforts on alphanumeric paging services,
primarily because technology has inhibited the Company's ability to deliver the
services in a cost-effective manner. With the introduction of advanced messaging
services, most of the Company's efforts to market alphanumeric services will be
focused on advanced messaging services. See "-- Guaranteed or Assured
Messaging."
 
     Roaming Services. OmniRoam(SM) services allow customers the flexibility to
change their local coverage through a simple phone call. Using a touch-tone
phone, the customer need only enter the area code of the city to which he or she
is traveling and the local coverage is changed. Numeric and text messages are
 
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automatically sent to the customer's "roaming" city until coverage is
transferred back to the "home" city. With these services, the customer does not
pay for paging coverage that is not needed (i.e., nationwide coverage). These
services are available due to the Company's unique network architecture. These
products give the Company's customers the ability to take local coverage with
them when they travel to major communities in the United States, Canada, Mexico,
Central and South America, U.S. Virgin Islands, Puerto Rico, the Cayman Islands
and the Bahamas.
 
     GUARANTEED OR ASSURED MESSAGING. The Company's initial advanced messaging
service offering is guaranteed or assured messaging. If a subscriber with
guaranteed messaging service travels outside the coverage area or turns off the
subscriber unit, the network stores incoming messages for up to 96 hours until
the subscriber returns to the network's coverage area or turns on the subscriber
unit. When a subscriber is within the network's coverage area the subscriber
unit displays a message that it is in message receiving mode. If a subscriber
leaves the coverage area, the subscriber unit indicates that the network is
storing the subscriber's messages. Upon returning to a coverage area or turning
on the subscriber unit, the subscriber unit registers with the network and the
stored messages are automatically transmitted to the subscriber unit. The
Company currently offers both local alphanumeric guaranteed messaging and
nationwide auto-roam alphanumeric guaranteed messaging services.
 
     Local Alphanumeric Messaging. The Company's local alphanumeric guaranteed
messaging service enables the subscriber to receive alphanumeric messages up to
several hundred characters in length (compared to the approximately 80
characters in traditional one-way alphanumeric messaging) which are input by
either (i) a computer or other software enabled device and a modem that can
access the Company's network directly or via the Internet or (ii) a dispatch
operator.
 
     Nationwide Auto-Roam Alphanumeric Messaging. On December 15, 1998, the
Company introduced nationwide auto-roam alphanumeric guaranteed messaging
service. This service allows a subscriber to receive an alphanumeric message
anywhere within the coverage of the Company's network in the U.S. The service
uses the location identification capabilities of the narrowband PCS network to
automatically identify, without any action on the part of the subscriber, the
network zone in which to transmit the subscriber's messages.
 
     The Company believes that penetration of alphanumeric service on a regional
and nationwide basis has been limited to date due to the reluctance of many
one-way paging operators to promote the service because of its relatively high
use of system capacity during transmission. The narrowband PCS frequency
spectrum and the ReFLEX25(R) technology offer significant increases in capacity
over the one-way spectrum and technology currently delivering alphanumeric
messaging services with regional or nationwide coverage. The Company believes
that its nationwide auto-roam alphanumeric service improves upon traditional
alphanumeric service by permitting longer messages and guaranteed delivery.
Management believes that these service enhancements, along with its competitive
pricing, will appeal to subscribers of traditional alphanumeric messaging
services and to cost-conscious customers who have not previously subscribed to
nationwide services. The Company expects the migration of many current one-way
alphanumeric service subscribers to guaranteed or assured messaging service will
create additional capacity for numeric service on the Company's one-way network,
a service that can be very efficiently delivered on that network.
 
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     PLANNED ADVANCED MESSAGING SERVICES. The Company's planned future advanced
messaging service offerings include the following:
 
                      PLANNED ADVANCED MESSAGING SERVICES
 
<TABLE>
<CAPTION>
TYPE OF SERVICE                                     DESCRIPTION                           BENEFIT
- ---------------                                     -----------                           -------
<S>                                    <C>                                     <C>
Message Acknowledgment...............  When the message is received and/or     Lets the sender know the
                                       read, an alert is triggered and sent    message has been received
                                       back through the network.               and/or read.
Multiple-choice Response.............  Presents subscriber with a choice of    Eliminates need for a return
                                       responses embedded in the message.      phone call and completes the
                                       Sender can create custom response on    messaging loop.
                                       a PC, embed it in the message, and
                                       transmit it to the device.
Preprogrammed Response...............  Presents subscriber with a list of      Provides a simple response
                                       preprogrammed messages for response.    method.
Full Two-way.........................  Subscriber can create custom            Allows messages to be sent
                                       responses or initiate messages, also    and information to be
                                       known as free form messaging.           requested on demand.
Telemetry............................  Fully customized, integrated,           Provides wireless
                                       end-to-end solutions with software      connectivity to machines such
                                       applications that allow                 as security systems,
                                       computer-based devices to transmit      environmental control systems
                                       and receive data wirelessly.            and vehicles.
</TABLE>
 
     Message Acknowledgment Service. The Company plans to introduce message
acknowledgment service in 1999. This service will provide the sender of a
message confirmation that the message was delivered accurately to the subscriber
unit. The sender can receive the acknowledgment through the same mechanism that
was used to create the original message or by designating another communication
path for the acknowledgment.
 
     Response and Full Two-way Service. The Company plans to introduce response
and full two-way messaging services in 1999. Response messaging allows a
subscriber to respond back to the sender of a message. A subscriber can either:
 
     - Select from a custom set of multiple choice responses sent with the
       message, or
 
     - Send a response chosen from a set of predefined responses stored in the
       subscriber unit.
 
     Multiple responses can be made to the same message. The sender is expected
to be able to receive responses through the same mechanism that was used to
create the original message or by designating another communication path for the
response.
 
     Two-way messaging will allow a subscriber to originate and receive messages
and other communications. Subscribers could be notified of the receipt of
electronic mail, voice mail and faxes. Similarly, subscribers can originate
messages which are delivered to a target recipient over several alternative
communications networks.
 
     Using two-way messaging, a subscriber is expected to be able to stay in
touch while in transit, using a portable and relatively inexpensive device and
service. In addition to these benefits, this service will also have the
traditional benefits of one-way paging: broad geographic coverage; good building
penetration; small,
 
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disposable-battery powered subscriber units, which allows the device to be
carried continuously; long battery life, which allows the device to be used
continuously without servicing; and low costs of ownership and usage.
 
     Telemetry. The Company plans to introduce telemetry services in the second
half of 1999. Telemetry services allow computer-based devices to transmit and
receive data wirelessly over the Company's nationwide narrowband PCS network.
See "Sales and Marketing -- Telemetry."
 
     ADDITIONAL VALUE-ADDED SERVICES. In addition to paging services, the
Company offers subscribers a number of additional value-added services,
including voice mail services that allow subscribers to retrieve voice messages
from persons attempting to contact the subscriber. In addition, the Company
offers a message retrieval service which allows a one-way service subscriber to
retrieve messages that were sent at a time when the subscriber was outside of
his or her service area. Other optional services include operator dispatch
services, nationwide toll-free access numbers for paging subscribers, a
customized voice prompt that allows subscribers to record a personal greeting,
maintenance agreements and loss protection programs. During 1998, approximately
21% of the Company's recurring revenues were derived from these additional
services.
 
     The Company also offers wireless connectivity to the Internet for message
transfer and information requests through the "PageMart Wireless Web" service
utilizing the Company's wireless communications network. These services include
electronic mail, news and other information delivered to subscriber units.
 
     SUBSCRIBER UNITS. The Company's messaging services are delivered to
pocket-sized subscriber units which the Company sells or leases to its
subscribers. One-way subscriber units are available from a number of
manufacturers. Guaranteed messaging subscriber units are currently available
from Motorola and Wireless Access, a subsidiary of Glenayre Technologies, Inc.
Subscriber units with the capabilities to utilize more sophisticated advanced
messaging services are expected to be available in 1999.
 
     The Company's operating model for one-way wireless messaging emphasizes a
strategy of selling rather than leasing subscriber units. As of December 31,
1998, approximately 94% of the Company's one-way subscriber units were customer
owned and maintained ("COAM"). The Company believes that by following a COAM
strategy for one-way wireless messaging it can achieve significantly better
capital efficiency than if it were to follow a lease strategy, which is
reflected in its relatively low capital employed per subscriber of $27 at
December 31, 1998. Capital employed per subscriber represents total assets, less
narrowband PCS assets, cash, non-debt current liabilities and international
investments divided by domestic units in service. The Company believes that its
COAM strategy for one-way wireless messaging provides additional benefits,
including reduced risk of technological obsolescence and avoidance of the credit
risk associated with leasing subscriber units to end-users. See "Management's
Discussion and Analysis of Financial Condition and Results of Operations."
 
     In contrast to the Company's operating model for traditional one-way
messaging, the Company expects that it will lease rather than sell a majority of
its advanced messaging subscriber units. The higher price per unit for advanced
messaging subscriber units is expected to make leasing an attractive alternative
to purchasing the units. In addition, the Company expects that the strongest
market demand for advanced messaging services will come initially from corporate
and business customers, which often prefer to lease subscriber units.
 
     PRODUCT DEVELOPMENT. The Company anticipates that growth in advanced
messaging services will be enhanced through new wireless alliances with software
companies and electronic equipment manufacturers to develop additional text
messaging products and services. Computers, personal organizers and personal
digital assistants ("PDAs") are being equipped with built-in RF capability. In
October 1997, the Company, Motorola and 3Com entered into a development and
supply agreement to develop, produce and market a pager card providing one-way
paging services for 3Com's PalmPilot PDA. In July 1998, the Company initiated
shipments of the Synapse(TM) Pager Card, branded by the Company, for integration
into the PalmPilot. The Synapse(TM) Pager Card adds wireless messaging
capability to the PalmPilot PDA. A PalmPilot equipped with the Synapse(TM) Pager
Card can receive and store wireless messages in substantially the same manner as
a traditional pager, including text messages originated over any PC connected to
the Internet. The Synapse(TM) Pager Card also provides a user of a PalmPilot
with new messaging features such as sender identification,
 
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wireless schedule updates and missed message alerts. The Company plans to
continue to explore new alliances with software companies and equipment
manufacturers for the development of messaging solutions utilizing its wireless
messaging network.
 
SALES AND MARKETING
 
     The Company's messaging customers include individuals, corporations and
other organizations that desire affordable communication services offering
substantial mobility, accessibility and the ability to receive timely
information. The Company utilizes a number of distribution channels to market
its products and services, including marketing directly through its national
accounts sales force and the sales force in the Company's sales offices, and
indirectly through strategic alliances with large communications providers,
national and regional retailers, and regional and local resellers. The Company
also anticipates expanded distribution of messaging services through the
development of telemetry applications and additional product development.
Management believes that a diversified approach to distribution is important to
sustain growth as demand for messaging services more deeply penetrates the
United States population, especially the consumer market. This diversification
is a key element of the Company's strategy of expanding its subscriber base to
increase profitability and cash flow through greater utilization of its
nationwide wireless communication network. The Company is not dependent on any
single customer or a few customers, the loss of one or more of which would have
a material adverse effect on the Company.
 
     CARRIER SERVICES. Through its Carrier Services Strategic Business Unit
("Carrier Services SBU"), the Company has established numerous strategic
alliance relationships with large communications providers, such as GTE
Corporation, Southwestern Bell Mobile Systems, BellSouth Cellular Corp.,
Ameritech Mobile Services, Inc., WorldCom Network Services, Inc., EXCEL
Communications, Inc., ALLTEL Communications, Bluegrass Cellular, Inc. and First
Cellular of Southern Illinois. These companies utilize their brand awareness and
billing and distribution efficiencies to market private brand pagers and
services using the Company's transmission network. The business unit is
positioned to support carriers in the bundling and integration of messaging
services into an extended portfolio of communications services. At December 31,
1998, approximately 37% of the Company's units in service had been added through
the Carrier Services SBU. The Company expects this proportion to increase over
the next several years in part due to the introduction of the Company's
nationwide narrowband PCS network.
 
     As market demand for advanced messaging services continues to develop, the
Company expects its carrier services distribution channel to grow in
significance. The Company believes that a limited number of narrowband PCS
networks will be built nationwide. The Company believes that its narrowband PCS
network is a low cost, high functionality network compared to the networks of
its initial competitors, which will make reselling of the Company's services
attractive to other paging companies and communications providers. These
companies will resell such services under their own brand names.
 
     In addition, the Company has entered into agreements with Metrocall, Inc.
("Metrocall") and AirTouch Paging ("AirTouch"), the second and fourth largest
paging carriers, respectively, in the United States as of year end 1998. The
agreements are organized into two phases. Initially, Metrocall and AirTouch will
market their switch-based narrowband PCS services utilizing the Company's
narrowband PCS network. During the second phase, Metrocall and AirTouch will
install their own narrowband PCS networks leveraging the Company's
infrastructure and sites. Under these agreements, the companies will share
certain capital and operating expenses, which will significantly lower costs for
all companies. The Company anticipates that it may enter into similar
arrangements with other major paging carriers. However, there can be no
assurance of the success of the arrangements with Metrocall and AirTouch or of
similar arrangements with other paging carriers, if any.
 
     NATIONAL ACCOUNTS. In 1998, the Company formed its National Accounts
Strategic Business Unit ("National Accounts SBU") for the purpose of selling and
leasing traditional and advanced messaging products and services to major
corporate accounts.
 
     The Company expects that initially the strongest market demand for advanced
messaging services will be from large, geographically dispersed corporate
accounts because of the growing need of business customers for
                                        8
<PAGE>   10
 
mobile, reasonably priced access to communication and information services with
wide area coverage; the ability of business customers to pay the higher cost of
advanced messaging subscriber units compared to one-way subscriber units; and
the lack of sales personnel in retail stores trained to sell the new services.
The National Accounts SBU emphasizes sales of advanced messaging services as a
solution to business messaging needs. As a result, the Company believes that its
National Accounts SBU, along with the Company sales offices and Carrier Services
SBU distribution channels are initially best suited for marketing and selling
these services.
 
     The Company divided its direct sales force into a unit focusing on national
accounts and a unit focusing on local markets. This enables the direct sales
force personnel to personalize and specialize their approach to their target
market. The Company has embarked on a program to hire and train sales personnel
for its National Accounts SBU. In 1998, the Company increased its direct sales
force by approximately 60% to position itself to meet the anticipated demand for
advanced messaging services.
 
     COMPANY SALES OFFICES. The Company's Markets Strategic Business Unit
("Markets SBU") consists of Company-owned sales offices that sell and lease
equipment and messaging services through three distribution channels: direct
sales, agents and third-party resellers. At December 31, 1998, approximately 37%
of the Company's units had been added through the Markets SBU.
 
     Direct Sales. The Company markets its equipment and services through its
direct sales force and related marketing activities such as telemarketing and
advertisements in radio, print media and telephone company yellow pages. Direct
sales representatives are compensated in large part by sales commissions for
each unit sold or placed in service.
 
     Agents. The Company markets its equipment and paging services through
agents. Agents establish customers which are billed directly by the Company.
Agents typically sell subscriber units for their own account and earn a
commission or fee on the sale of the service.
 
     Third-Party Resellers. In addition to offering paging and messaging
services directly to end-users, the Company also offers paging services to third
party resellers in bulk quantities at wholesale monthly rates that are lower
than the Company's regular retail rates.
 
     RETAIL MARKETING. Since early 1993, the Company has been an industry
pioneer in developing the retail distribution channel through sales arrangements
with regional and national retail chains that sell electronic and business
equipment or consumer goods. The Company's National Retail Strategic Business
Unit ("National Retail SBU") sells subscriber units to a retailer who then sells
the subscriber units to potential users. The purchaser can activate the
subscriber unit and subscribe for service with the Company by simply calling the
toll-free number identified on the unit. Because the Company's subscriber units
operate on a common nationwide frequency, they can be sold in any retail store
located in the Company's nationwide coverage area. By contrast, competitors that
use multiple frequencies across markets require retailers to maintain many more
stock keeping units to serve each local market that utilizes a different
frequency.
 
     The Company has entered into sales arrangements with a number of large
national retail chains such as OfficeMax, RadioShack, Eckerd's, Bradlees,
7-Eleven, Fry's Electronics and Target Stores. Retail distribution also allows
the Company to sell subscriber units in markets that would not support a direct
sales office but in which it has installed the necessary network equipment
required for providing paging services. The Company can thus enter new markets
by capitalizing on its existing infrastructure of transmitters with the only
incremental expense being the procurement of local access phone lines.
 
     The Company expects retail sales to continue to be an important channel of
distribution. In addition, in 1998 the Company tested the retail marketing of
prepaid paging service cards, a program which the Company expects to expand in
1999. The number of retail store locations has increased to 15,744 stores at
December 31, 1998 from 12,924 stores, 5,530 stores and 3,411 stores at December
31, 1997, 1996 and 1995, respectively. However, the Company believes that the
rate of growth in the number of stores will level off in 1999 and years
thereafter. At December 31, 1998, approximately 26% of the Company's units in
service are represented by the national retail channel.
 
                                        9
<PAGE>   11
 
     TELEMETRY. In the third quarter of 1998, the Company announced the
formation of its Telemetry Strategic Business Unit ("Telemetry SBU"). The
Telemetry SBU was chartered to develop cutting-edge, standards-based,
cost-effective technology for any industry, business or consumer with the need
to transport machine originated data over a wireless network. The Telemetry SBU
will offer customized, integrated, end-to-end solutions with software
applications that allow computer-based devices to transmit and receive data
wirelessly over the Company's nationwide narrowband PCS network.
 
     The Company plans to provide telemetry services over its network utilizing
the ReFLEX25(R) protocol and "transceiver" two-way devices such as the
Creatalink2XT being developed by Motorola. In September 1998, the Company
announced a strategic alliance with Interactive Technologies, Inc. to provide
wireless telemetry connectivity to home security systems. In October 1998, the
Company announced strategic alliances with RoadTrac(TM), LLC and Pentech Energy
Solutions, Inc. to provide telemetry solutions for vehicle location technology
and environmental control systems, respectively. In November 1998, Monitel
Products Corp. and the Company entered into a strategic agreement under which
the Company will provide telemetry services to be utilized in Monitel's remote
monitoring diagnostic products within the photocopying and imaging industry.
Although the Company does not expect the Telemetry SBU to originate any units in
service until the second half of 1999, as market demand for wireless telemetry
services develops, the Company expects its Telemetry SBU to grow in
significance. However, there can be no assurance that wireless telemetry
services over narrowband PCS networks will be commercially viable or that the
proposed telemetry solutions will be possible, and the success of wireless
telemetry services could be affected by matters beyond the Company's control
such as the availability and viability of transceiver devices.
 
TRANSMISSION NETWORK
 
     GENERAL. The Company developed an innovative satellite-based transmission
network that gives the Company a flexible, highly reliable network architecture
and an efficient operating structure. The Company began using direct broadcast
satellite ("DBS") technology in 1990 and was the first one-way wireless
communications carrier to use DBS technology to control all of its transmitters.
With a DBS paging system, the satellite broadcasts messages directly to each
transmitter in the Company's paging system, which then broadcasts the messages
to pagers on the Company's nationwide broadcast frequency. DBS eliminates the
expensive terrestrial radio link and repeater equipment that many paging
companies have employed to control simulcast transmissions in large metropolitan
markets. In addition, the satellite system can selectively address one or any
combination of the Company's transmitters, thereby providing a wide range of
coverage options and permitting efficient use of paging frequencies in each
market.
 
     The Company has utilized its existing one-way paging network infrastructure
as the basis for its nationwide narrowband PCS network. A narrowband PCS network
employs both radio transmission and receiving equipment throughout the network.
Subscriber units contain not only a receiver, but also a transmitter that
broadcasts its identity and other data, such as acknowledgement of receipt of a
message, to the network receivers. The network can determine whether a
subscriber is within range. If a subscriber travels outside the range of the
network, the network stores the message for up to 96 hours until the subscriber
returns to the coverage area and then transmits the message.
 
     In contrast, a one-way network employs only radio transmitters. One-way
subscriber units contain only receivers and have no ability to send messages to
the network. Because the subscriber unit cannot communicate with the network,
there is no ability to confirm receipt of messages or determine whether the
subscriber is actually within the coverage of the network when the message is
sent.
 
     The one-way network broadcasts messages simultaneously over all
transmitters in the subscriber's coverage area. This results in inefficient use
of spectrum and limits the capacity of the network to provide enhanced services,
such as alphanumeric messaging. The narrowband PCS network is expected to have
the capability to identify the subscriber's approximate location and to
broadcast messages from a limited number of transmitters in a zone rather than
from all transmitters in the subscriber's coverage area, which will result in
higher network capacity due to efficient use of spectrum.
 
                                       10
<PAGE>   12
 
     NARROWBAND PCS NETWORK BUILDOUT. During 1998, the Company deployed
receivers and other network equipment to add narrowband PCS capabilities to the
existing one-way paging network to facilitate provisioning of advanced messaging
services. The Company chose Glenayre Technologies, Inc. ("Glenayre") and
Motorola as the primary providers of the infrastructure equipment. The Company
began commercial operation of local guaranteed messaging service in the Austin
and San Antonio, Texas areas in June 1998. In the third quarter of 1998, the
Company continued the roll-out of its narrowband PCS network introducing
guaranteed messaging service in more than 250 cities throughout the country. On
December 15, 1998, the Company announced nationwide guaranteed messaging over
its narrowband PCS network. The Company's narrowband PCS network covered
approximately 70% of the population of the United States as of December 31,
1998. The Company plans to continue to build out its network and expand its
coverage area during 1999. The key elements of the narrowband PCS network are as
follows:
 
     Design. The design of the Company's nationwide narrowband PCS network is
based upon Motorola's ReFLEX25(R) technology. Existing transmitters and
transmitter sites are used for the outbound portion of the network. The inbound
or receive portion of the network required that new infrastructure equipment
(i.e., receivers) be added to both existing sites and to new sites. The exact
number of new receive sites required beyond those to be located on existing
sites is a function of the amount of available space on existing sites and the
local RF characteristics of the particular market being built out. By primarily
utilizing the Company's existing transmission sites, the Company was able to
build-out the narrowband PCS network with significantly less capital than other
newly constructed networks.
 
     Equipment. The infrastructure of the Company's network consists of a home
terminal, encoders, satellite access controllers ("SACs"), radio transmitters
and receivers, switches, RF controllers and ancillary equipment, such as coaxial
cable and antennas.
 
     The home terminal is a key component of a network that defines and controls
the types of services that can be provided by the network. The advanced
messaging services that can be provided on the narrowband PCS network are more
varied and complex than services provided on the Company's one-way network. In
addition, because the market for advanced messaging services is relatively
immature and undeveloped, the Company cannot predict with certainty how the
market will adopt and use the advanced messaging services that are potentially
available for commercial development. The Company believes that the ability to
react quickly to developing market demand for advanced messaging services will
be a critical element in successfully implementing its advanced messaging
services strategy. As a result, the Company developed its proprietary home
terminal, called the Advanced Cross Media Information Server ("AXIS(TM)"),
rather than purchase it from an outside vendor. As of December 31, 1998, the
Company had invested approximately $9.8 million in the development of AXIS(TM)
over a period of three years.
 
     The Company purchases infrastructure equipment (other than the AXIS(TM)
home terminal, SACs and ancillary equipment) from industry leading equipment
suppliers, Motorola and Glenayre. Glenayre was chosen as the primary provider of
the narrowband PCS network infrastructure equipment. The Company believes that
currently these are the only two qualified suppliers of such infrastructure
equipment and subscriber units and, as a result, the Company is dependent on
these two suppliers for much of its infrastructure equipment and subscriber unit
needs. The Company understands that Motorola and Glenayre have cross-licensed
the relevant protocols. The Company purchases infrastructure equipment from
Glenayre and Motorola under existing volume purchase agreements. The Company's
guaranteed messaging requires an AccessMate(TM) advanced messaging device. The
AccessMate(TM) is manufactured by Wireless Access, a subsidiary of Glenayre. The
Company purchases AccessMates(TM) under a supply agreement executed in early
1998. The Company expects to purchase advanced messaging subscriber units from
Motorola under an existing volume purchase agreement. The Company has entered
into a volume purchase agreement with AvData to purchase SACs, VSATs and related
equipment for its narrowband PCS network. The Company would be adversely
affected if it were unable to obtain additional infrastructure equipment and
subscriber units on satisfactory terms by planned delivery dates.
 
     SATELLITE SERVICES. The Company leases satellite services pursuant to
agreements with AvData Systems, Inc. ("AvData") and SpaceCom Systems, Inc.
("SpaceCom"). The agreements subject the Company to
                                       11
<PAGE>   13
 
monthly service charges based on the amount and types of services used and
expire on July 1, 2003 and July 31, 2003, respectively. The agreements may be
terminated upon certain failures of the Company to pay monthly service fees. The
agreements do not include any renewal provisions. Management believes that the
services provided by AvData and SpaceCom are sufficient to meet the Company's
foreseeable needs and that there are alternative satellite resources available
to the Company on comparable terms and conditions. As a result, the Company does
not believe the loss of its relationship with its current satellite suppliers
would have a material adverse long-term effect on its business and operations.
 
INTERNATIONAL STRATEGY
 
     The Company is implementing a systematic plan to provide messaging services
in selected countries on a seamless international network. The Company's
international strategy is initially to pursue opportunities in North America,
Central America, the Caribbean and South America. The Company pursues
international opportunities through direct ownership in Canada, and through
network affiliation agreements between the Company and the owners of foreign
networks. Network affiliation agreements provide, with minimal incremental
capital investment by the Company, interconnection between the Company's network
and the foreign network and capabilities for the Company's subscribers to roam
to the foreign country and the foreign owner's subscribers to roam to the U.S.
In each country in which the Company offers paging and messaging services, such
services are offered on a nationwide frequency common to at least one of the
Company's nationwide frequencies in the United States in order to allow a single
messaging device to be used in multiple countries. There can be no assurance,
however, that in each country in which the Company seeks to expand coverage that
a frequency will be available that is common to one of the Company's U.S.
nationwide frequencies.
 
     One of the Company's international investments is in Canadian companies,
PageMart Canada Limited and PageMart Canada Holding Corporation ("Canada
Holding") (collectively "PageMart Canada"). PageMart Canada, obtained a
nationwide license in Canada in 1995 for a frequency common to one of its
frequencies in the United States. PageMart Canada began providing service in the
largest metropolitan areas in Canada to United States and Canadian subscribers
beginning in April 1996. On November 26, 1998 the Company received notification
from the third party Canadian investors, which represent the controlling
shareholder interest in PageMart Canada, of its intent to exchange its 1,000,000
shares of Class A Common Stock in Canada Holding for 714,286 shares of PageMart
Wireless pursuant to rights contained in the Agreement Among Stockholders of
PageMart Canada, dated July 28, 1995. The Agreement Among Stockholders permits
the Company to find a replacement for the Canadian investors in order to comply
with Canadian regulations governing ownership of Canadian paging licenses. The
Company is currently examining alternative arrangements in Canada including the
replacement of the Canadian investors or the ultimate transfer of PageMart
Canada to another entity. The Company may consider selling its interest in
PageMart Canada in exchange for a network affiliation arrangement similar to
those utilized by the Company in other countries.
 
     In 1997, the Company entered into an exclusive ten-year network affiliation
agreement with TelMex through its wholly owned subsidiary, Buscatel. TelMex has
acquired, in Mexico, the same nationwide frequency the Company uses nationwide
in the United States and Canada and has installed such frequencies in all 33
markets where Buscatel operates. Under the terms of the agreement, the Company
and Buscatel integrate networks to enable efficient, user transparent messaging.
The companies will jointly expand coverage, concentrating initially on major
cities located along the 2,000-mile United States/Mexico border. The two
companies also jointly market services and co-brand pagers where appropriate.
With the addition of Mexico via the TelMex agreement, PageMart offers true
NAFTA-wide coverage.
 
     The Company also provides paging coverage on the Company's nationwide
frequency in Puerto Rico and the U.S. Virgin Islands through affiliation
agreements. In September 1998, the Company enhanced its Caribbean coverage by
adding the Cayman Islands through a network affiliation agreement with Island
Electronics (Paging) Limited, the Cayman Islands' premier paging company.
 
                                       12
<PAGE>   14
 
     PageMart has also signed network affiliation agreements with leading paging
companies in El Salvador, Guatemala, Honduras, Costa Rica, Panama, Venezuela,
Peru and Haiti. As in the case of Mexico, the same nationwide 900MHz frequency
used by the Company has been licensed by the Company's network affiliates in
each country. The extension of the companies' services, including roaming, to
these areas allows PageMart to offer its domestic customers paging service from
Canada into South America. The Company expanded services into Guatemala, Costa
Rica, Haiti, the Cayman Islands and the Dominican Republic in 1998. The Company
expects to expand services into Colombia, Honduras, Trinidad and Tobago Peru and
Venezuela in 1999. With the addition of Trinidad and Tobago to its international
FLEX(TM) paging network, the Company expanded its network to include seventeen
countries in North, Central and South America and the Caribbean.
 
     The common frequency allows the Company and its network affiliates in each
country to provide customized coverage that extends beyond the borders of the
serving country, using the same pager. For example, a subscriber in New York
could choose New York and Toronto or Mexico City coverage.
 
COMPETITION
 
     The Company competes primarily on the basis of its equipment and wireless
services prices, quality of service, and coverage capability. Its competitors
include both companies which provide paging or other mobile communications
services in local markets in which the Company operates and regional and
nationwide paging service providers. These include regional telephone companies
and both small and large paging service providers, such as Paging Network, Inc.
("PageNet"), Metrocall, Inc., MobileMedia Communications, Inc., AirTouch
Communications, Inc., Arch Communications Group, Inc. and SkyTel Communications,
Inc. ("SkyTel"). Certain of these companies have substantially greater
financial, technical and other resources than the Company. In addition, a number
of telecommunications carriers (including providers of broadband PCS) have
constructed or are in the process of constructing nationwide wireless networks
that will compete with the Company's services, including the provision of
advanced messaging services. SkyTel introduced the first nationwide advanced
messaging network and other carriers, such as PageNet have announced plans to
provide services over their own nationwide narrowband PCS networks in 1999.
Management believes that the Company's low cost structure and service offerings
will enable it to continue to compete effectively.
 
     A number of competing technologies, including cellular telephone service,
broadband and narrowband personal communication services, specialized mobile
radio, low speed data networks and mobile satellite services, are used in, or
projected to be used for, advanced messaging services. Cellular telephone
technology and broadband personal communications services provide an alternative
communications system for customers who are frequently away from fixed-wire
communications systems (i.e., ordinary telephones). Compared to cellular
telephone service and broadband service, paging services are generally less
expensive, offer longer battery life, provide better in-building penetration,
extend over wider coverage areas, and are more transportable. For those cellular
customers for whom convenience and price are considerations, paging and
narrowband PCS can compete successfully by complementing their cellular usage.
Management believes that paging will remain one of the lowest-cost forms of
wireless messaging due to the low cost infrastructure associated with paging
systems, as well as advances in technology that are expected to reduce paging
costs. Broadband personal communications services technologies currently being
offered commercially in some cities and under development in other areas of the
United States, are similar to cellular technology and offer paging services in a
single handset. This technology will offer greater capacity for advanced
messaging services and, accordingly, is expected to result in greater
competition.
 
     Technological advances in the telecommunications industry have created, and
are expected to continue to create, new services and products competitive with
the wireless services currently provided by the Company. In addition, certain
companies are developing one-way and advanced messaging services which may
compete with the one-way and advanced messaging services which the Company
expects to provide. There can be no assurance that the Company will not be
adversely affected as new competitive technologies become available and are
implemented in the future. In addition, the Company may be adversely affected if
cellular telephone companies or broadband personal communications service
providers begin to provide other wireless services or enter into partnerships
with other companies to provide wireless services that complement cellular or
broadband PCS services.
                                       13
<PAGE>   15
 
GOVERNMENT REGULATION
 
     Wireless messaging operations are subject to regulation by the FCC under
the Communications Act of 1934, as amended (the "Communications Act"), including
recent amendments contained in the Telecommunications Act of 1996 (the "1996
Act").
 
     The Company provides one-way messaging services directly to subscribers
over its own transmission facilities. The Company (through subsidiaries) holds
two exclusive nationwide one-way licenses, as well as exclusive licenses on
various one-way frequencies in certain metropolitan areas, including New York,
Los Angeles and Chicago. Additionally, the Company holds a 50kHz unpaired
nationwide narrowband PCS license (the "Nationwide Narrowband License") and five
50/50kHz paired regional narrowband PCS licenses (the "Regional Narrowband
Licenses"); the latter five licenses authorize the Company to operate regional
narrowband systems on the same frequencies throughout the continental United
States. The Nationwide Narrowband License was granted on September 29, 1994, and
the Regional Narrowband Licenses were granted on January 27, 1995. The
Nationwide Narrowband License and the Regional Narrowband Licenses will be
utilized in connection with its narrowband PCS networks.
 
     Under FCC rules governing regulation of commercial mobile radio services
("CMRS"), licensees such as the Company must provide interconnection upon
reasonable request, must not engage in any unreasonably discriminatory practices
and are subject to complaints regarding any unlawful practices. The Company is
also subject to provisions that authorize the FCC to provide remedial relief to
an aggrieved party upon finding a violation of the Communications Act and
related customer protection provisions.
 
     The Company's CMRS Licenses (the "Licenses") authorize the Company to use
the radio frequencies necessary to conduct its operations. The Licenses
prescribe the technical parameters, such as power output and tower height, under
which the Company is authorized to use those frequencies. The Licenses are for
varying terms of up to 10 years, at the end of which time renewal applications
must be submitted to the FCC for approval. Several of the Company's Licenses
expire in 1999. In order to be granted the exclusive use of a frequency, the
Company is required to construct and maintain a specified minimum number of
transmission sites, depending upon the breadth of the exclusivity, each of which
is licensed by the FCC (the "Operating Licenses"). The Nationwide Narrowband
License will expire on September 29, 2004 unless renewed by the Company. The
Regional Narrowband Licenses will expire on January 27, 2005 unless otherwise
renewed. FCC renewals are routinely granted in most cases upon a demonstration
of compliance with FCC regulations and adequate service to the public. Although
the Company is unaware of the existence of any circumstances which would prevent
the grant of any pending or future renewal applications, no assurance can be
given that the Licenses will be renewed by the FCC in the future. Furthermore,
although revocation and involuntary modification of licenses are extraordinary
regulatory measures, the FCC has the authority to restrict the operation of
licensed facilities or to revoke or modify licenses. No License of the Company
has ever been revoked or modified involuntarily.
 
     The Company has complied with FCC requirements with respect to the buildout
of its existing one-way messaging network. There are separate FCC buildout
requirements with respect to the Company's narrowband PCS Licenses. As a
nationwide narrowband PCS licensee, the Company must construct base stations
that provide coverage to a composite area of 750,000 square kilometers or serve
37.5% of the United States population within five years of the initial license
grant date and must construct base stations that provide coverage to a composite
area of 1,500,000 square kilometers or serve 75% of the United States population
within ten years of the initial license grant date. Additionally, as a regional
narrowband PCS licensee, the Company must construct base stations that provide
coverage to a composite area of 150,000 square kilometers or serve 37.5% of the
population of the service area within five years of its initial license grant
date and must construct base stations that provide coverage to a composite area
of 300,000 square kilometers or serve 75% of its service area population within
ten years of the initial license grant date. Failure to meet the construction
requirements will result in forfeiture of the license and ineligibility to
regain it.
 
     The Communications Act requires licensees such as the Company to obtain
prior approval from the FCC for the assignment of any station license or the
transfer of control of any entity holding such licenses (in February 1998, the
FCC amended its rules to exempt pro forma transactions from this requirement).
The
                                       14
<PAGE>   16
 
FCC has approved each transfer of control for which the Company has sought
approval. The Communications Act also requires prior approval by the FCC of
acquisitions of paging companies. The Company also regularly applies for FCC
authority to use frequencies, modify the technical parameters of existing
licenses, expand its service territory and provide new services. Although there
can be no assurance that any requests for approval or applications filed by the
Company will be approved or acted upon in a timely manner by the FCC, or that
the FCC will grant the relief requested, the Company has no reason to believe
any such requests, applications or relief will not be approved or granted.
 
     The Omnibus Budget Reconciliation Act of 1993 (the "Budget Act") imposed a
structure of regulatory fees which the Company is required to pay with respect
to its Licenses. The FCC increased these fees for fiscal year 1998. The Company
believes that these regulatory fees will not have a material adverse effect on
the Company's business.
 
     The FCC, on April 23, 1997, released a Report and Order establishing
competitive bidding rules for the remaining narrowband PCS spectrum as well as a
Further Notice of Proposed Rulemaking seeking commentary on a proposal to
license narrowband PCS spectrum that had previously been held in reserve and on
a proposal to modify the existing spectrum allocation plan to aggregate smaller
geographic license areas and create additional nationwide narrowband PCS
licenses. Adoption of either of these two proposals would increase the amount of
nationwide narrowband PCS spectrum available to the public and might negatively
impact the value of the nationwide narrowband PCS licenses held by the Company.
 
     On February 24, 1997, the FCC released its Second Report and Order, which
sets a system of competitive bidding ("auctions") to issue licenses for
frequencies for which there are mutually exclusive applications. Under the FCC
proposal, licenses for individual paging channels for which there are mutually
exclusive applications would be auctioned on a geographic basis. In defining the
area within which existing users would be protected from interference from the
auction winners or neighboring licensees (an area known as an "interference
contour"), the FCC created a new methodology that in many instances reduces the
size of the area within existing licensees' interference contours. This change,
however, does not have an impact on licensees with nationwide exclusivity (such
as the Company), because no other operator has the right to apply for such
licensees' exclusive frequencies.
 
     The FCC's Second Report and Order contains a Further Notice of Proposed
Rulemaking in which the FCC seeks commentary on whether it should impose
coverage requirements on licensees with nationwide exclusivity (such as the
Company), whether these coverage requirements should be imposed on a nationwide
or regional basis, and whether -- if such requirements are imposed -- failure to
meet the requirements should result in a revocation of the entire nationwide
license or just a portion of the license. If the FCC were to impose stringent
coverage requirements on licensees with nationwide exclusivity, the Company
might have to accelerate the build-out of its system in certain areas.
 
     In a rulemaking proceeding pertaining to interconnection between local
exchange carriers ("LECs") and CMRS providers, the FCC has concluded that LECs
are required to compensate CMRS providers for the reasonable costs incurred by
such providers in terminating traffic that originates at LEC facilities, and
vice versa. With regard to the negotiation of these mutual compensation
arrangements, the FCC has concluded that states have the authority under certain
circumstances to mandate a "bill and keep" arrangement on negotiating parties
(i.e., the LEC and the CMRS provider would charge each other a rate of zero for
the termination of the other's traffic). The Company believes that "bill and
keep" arrangements, if applied to paging services, would not have a material
adverse effect on the Company's business.
 
     Consistent with this ruling mandating compensation for carriers terminating
LEC-originated traffic, the FCC has determined that LECs may not charge a CMRS
provider or other carrier for terminating LEC-originated traffic. Some LECs have
been reluctant to comply with the FCC orders and have threatened to terminate
interconnection arrangements with the Company if it does not agree to pay for
dedicated facilities used to terminate LEC-originated traffic. The Company has
made certain payments to the LECs under protest and has maintained reserves for
payments that the LECs were claiming were due. The FCC's staff recently made it
clear that under the FCC's current rules, LECs may not charge CMRS providers for
such facilities, although these rules are being reconsidered and may be modified
in the near future. Some LECs
                                       15
<PAGE>   17
 
continue to disagree with the FCC in regards to this issue, and are continuing
their refusal to comply with these rules.
 
     As a result of the enactment of the 1996 Act, the Company will face
additional financial obligations. In November 1996, in response to a directive
in the 1996 Act, the FCC adopted new rules that govern compensation to be paid
to pay phone providers. After these rules were vacated by the U.S. Court of
Appeals for the D.C. Circuit, the FCC released an order mandating that long
distance carriers compensate pay phone providers 28.4c for each 800 number,
similar toll-free-to-the-caller number and access code (collectively, "800
Number") call during a two-year interim period. The long distance carriers are
expected either to pass this cost through to the paging companies that provide
800 Number service to their subscribers or to block pay phone calls to 800
Numbers. This could increase the cost of providing certain 800 Number messaging
services or limit the utility of 800 Number service. Petitions for review and
stay of this order were filed with a federal appellate court. In May 1998, the
DC Circuit ordered the FCC to explain, by January 8, 1999, its deviation of the
28.4c rate.
 
     Also, in response to changes made by the 1996 Act, the FCC has adopted new
rules regarding payments by telecommunications firms into a revamped fund that
will provide for the widespread availability of telecommunications services,
including to low-income consumers ("Universal Service"). Prior to the
implementation of the 1996 Act, Universal Service obligations largely were met
by local telephone companies. Under the new rules, all telecommunications
carriers, including paging companies, are required to contribute to the
Universal Service Fund. Payments into the fund will likely increase the cost of
doing business and could make the Company's service less competitive with the
other services. The mechanism to be used by paging providers in allocating
revenues between interstate and intrastate jurisdictions continues to be
debated. Pending the issuance of a final mechanism, the FCC recently established
a "safe harbor" percentage of 12% for paging carriers that the agency believes
reasonably approximates the percentage of interstate revenues generated by such
carriers.
 
     From time to time, legislation and regulations which could potentially
adversely affect the Company are proposed by federal and state legislators and
regulators. Legislation is currently in effect in Texas requiring paging
companies to contribute a portion of their taxable telecommunications revenues
to a Telecommunication Infrastructure Fund created by the state legislature.
Management does not believe that the Texas law will have a material adverse
effect on the Company's operations and is not aware of any other currently
pending legislation or regulations which will have a material adverse impact on
the Company's operations. However, there can be no assurance that Federal or
other state legislation will not be adopted, or that the FCC or the various
state agencies will not adopt regulations or take other actions that would
adversely affect the business of the Company.
 
INTELLECTUAL PROPERTY
 
     The Company has established an intellectual property program to protect its
investment in its messaging services and related proprietary technologies.
 
     The Company has obtained a United States service mark registration for its
PAGEMART word mark. The Company owns registrations for 14 of its other marks in
the United States. These federal registrations may be renewed as long as the
marks continue to be used in interstate commerce. At December 31, 1998, the
Company had 48 service mark/trademark applications pending before the United
States Patent and Trademark Office. The Company has also obtained, or is in
various stages of applying for, registrations for the PAGEMART mark and several
of its other marks in approximately 28 other countries or jurisdictions where
the Company conducts or anticipates expanding its international business. The
Company has also taken steps to reserve corporate names in certain foreign
countries where the Company anticipates expanding its international business.
 
     At December 31, 1998, the Company had seven United States patent
applications pending. The inventions claimed in those patent applications cover
aspects of the Company's current and possible future messaging systems and
related proprietary technologies. The Company is in the process of preparing
other United States patent applications. The Company's present intention is not
to rely primarily on intellectual
 
                                       16
<PAGE>   18
 
property rights to protect or establish further its market position; however,
the Company is committed to developing a portfolio of patents that it
anticipates may be of value in negotiating intellectual property rights with
others in the industry. The Company does not currently intend to broadly license
its intellectual property rights.
 
RISK FACTORS
 
     In this section, "we," "our" and "us" refer to the Company and its
subsidiaries.
 
     RISK OF LONG HISTORY OF OPERATING LOSSES. We have sustained consolidated
operating losses in each year of operations through the year ending December 31,
1997. We recognized a $2.5 million operating profit for the year ending December
31, 1998. However, we sustained an aggregate $12.7 million operating loss for
the three year period ended December 31, 1998. We expect to continue to incur
operating losses for the next several years. Although the Company had positive
EBITDA of $8.6 million for the year ended December 31, 1996, $27.3 million for
the year ended December 31, 1997 and $45.9 million for the year ended December
31, 1998, prior to 1996 the Company had negative EBITDA in each year of its
operations. EBITDA is earnings before interest, taxes, depreciation and
amortization. EBITDA is not derived pursuant to generally accepted accounting
principles ("GAAP") and therefore should not be construed as an alternative to
operating income, as an alternative to cash flows from operating activities (as
determined in accordance with GAAP) or as a measure of liquidity. The Company's
operating losses and negative EBITDA resulted principally from expenditures
associated with the establishment of the Company's one-way operations
infrastructure and the growth of its subscriber base.
 
     Although we expect that our one-way operations will continue to generate
EBITDA, the Company will incur substantial additional operating losses and
negative EBITDA during the start-up phase for advanced messaging services.
EBITDA generated from the Company's one-way operations will be used primarily to
fund the Company's advanced messaging operations for the next several years. We
cannot assure you that the Company's consolidated operations will become
profitable or continue to generate EBITDA or that its one-way operations will
continue to generate positive EBITDA. If the Company cannot achieve operating
profitability or continue to generate EBITDA, we may not be able to make
required debt service payments and our common stock may have little or no value.
 
     RISKS OF HIGH LEVERAGE; DEFICIENCY OF EARNINGS TO COVER FIXED CHARGES;
RESTRICTIVE COVENANTS. The Company is highly leveraged, primarily as a result of
debt financing incurred to fund the construction of the Company's nationwide
operations infrastructure, the growth of its subscriber base and the acquisition
of the narrowband PCS licenses it acquired in FCC auctions. At December 31,
1998, the Company's long-term debt was $462.1 million and its stockholders'
deficit was $90.0 million. In addition, the accretion of original issue discount
on the Company's outstanding indebtedness will cause a substantial increase in
indebtedness. The Company's deficiency of earnings before fixed charges to cover
fixed charges for each of the three years ended December 31, 1996, 1997, and
1998, was $48.6 million, $43.9 million and $70.5 million, respectively.
 
     The indentures pursuant to which the Company's 11 1/4% Senior Subordinated
Discount Notes due 2008 and 15% Senior Discount Notes due 2005 were issued and
the Company's credit facility contain restrictive covenants. The restrictions
affect, and in many respects significantly limit or prohibit the ability of the
Company to incur additional indebtedness, make prepayments of certain
indebtedness, pay dividends, make investments, engage in transactions with
affiliates, issue capital stock of certain subsidiaries, create liens, sell
assets and engage in mergers and consolidations. The limitations in the
indentures are subject to a number of important qualifications and exceptions.
In particular, while the indentures will generally restrict the Company's
ability to incur indebtedness by requiring compliance with specified leverage
ratios, they will permit the Company to incur an unlimited amount of additional
indebtedness to finance the acquisition of equipment, inventory and network
assets. However, one indenture prohibits the Company from securing more than
$175 million of indebtedness (other than intercompany indebtedness).
 
     RISKS OF IMPLEMENTATION AND FINANCING OF NARROWBAND PCS NETWORK. We cannot
assure you that advanced messaging services will be commercially viable or that
the advanced messaging service levels beyond guaranteed messaging will be
possible. The success of advanced messaging services could be affected by
                                       17
<PAGE>   19
 
matters beyond the Company's control. These matters include market acceptance,
the future cost of subscriber units, technological changes in wireless messaging
services, marketing and pricing strategies of competitors, regulatory
developments and general economic conditions.
 
     As the Company continues development and implementation of advanced
messaging services, we expect to incur significant additional operating losses
during the start-up phase for such services, and it will be necessary for the
Company to make substantial additional investments. We anticipate that advanced
messaging operations will require approximately $40 million of additional
capital expenditures to complete the addition of narrowband PCS capabilities,
expand its network geographically and make other enhancements. In addition, we
expect the advanced messaging operations to require approximately $30 million to
fund operations and marketing in 1999 as the advanced messaging customer base
grows. The Company's ability to incur indebtedness is limited by the covenants
contained in its debt indentures, the Company's vendor financing arrangement and
the Company's credit facility. As a result, any additional financing may need to
be in the form of new equity capital. We cannot assure you that sufficient
financing will be available, and if available, on attractive terms. See
"Management's Discussion and Analysis of Financial Condition and Results of
Operations -- Liquidity and Capital Resources."
 
     OUR GROWTH STRATEGY MAY NOT BE ACHIEVED. The successful implementation of
our strategy to increase cash flow through the expansion of our subscriber base
and the marketing of advanced messaging services is necessary for the Company to
meet its capital expenditures, working capital and debt service requirements.
The Company expects to continue to incur operating losses for the next several
years. Our strategy assumes that the wireless messaging industry will continue
to grow rapidly, and that the Company will continue to grow substantially faster
than the industry. We do not expect to continue to grow at our historical rate.
We cannot assure you that the Company will be able to achieve the growth
contemplated by its business strategy. The Company may not be able to make
required payments on its outstanding indebtedness and may have to refinance its
outstanding indebtedness in order to repay such obligations. No assurance can be
given that the Company will be able to refinance its outstanding indebtedness.
 
     WE OPERATE IN A HIGHLY COMPETITIVE MARKET. We face significant competition
in all of our markets. Many of our competitors, which include regional and
national paging companies, providers of broadband PCS and certain regional
telephone companies, possess significantly greater financial, technical and
other resources than the Company. If any of such companies were to devote
additional resources to the paging or other wireless messaging businesses or
focus its strategy on the Company's marketing and product niches, the Company's
results of operations could be adversely affected. For competitive and marketing
reasons, the Company generally sells each new subscriber unit for less than its
acquisition cost. In addition, a number of telecommunications companies
(including PCS providers) have constructed or are in the process of constructing
nationwide networks that offer services similar to the Company's services,
including the provision of advanced messaging services and two-way messaging.
See "Competition."
 
     Industry reports indicate, and we believe, that the retail distribution of
subscriber units has become increasingly common in the paging industry. If the
Company is unable to maintain its current sales relationships with retail
distributors or obtain new sales relationships with other retail distributors,
we may not be able to achieve our projected growth.
 
     RISK OF ADVERSE EFFECT OF SUBSCRIBER DISCONNECTIONS. Our results of
operations are significantly affected by subscriber disconnections. In order to
realize net growth in units in service, disconnected users must be replaced, and
additional users must be added. However, the sales and marketing costs
associated with attracting new subscribers are substantial relative to the costs
of providing service to existing customers. Expenses associated with each new
unit placement exceed the sales price and service initiation fee. The Company's
average monthly disconnection rates increased during 1998. For the twelve months
ended December 31, 1996, 1997 and 1998, disconnection rates were 2.4%, 2.5% and
3.2%, respectively. See "Management's Discussion and Analysis of Financial
Condition and Results of Operations -- Results of Operations -- Fiscal Years
1996, 1997 and 1998 -- Units in Service." Average monthly disconnection rates
are calculated by dividing the sum of (i) direct subscriber disconnections, (ii)
negative subscriber additions from the local, regional and reseller channel,
taken as a whole and (iii) the cumulative negative subscriber
 
                                       18
<PAGE>   20
 
additions from each of the Carrier Services SBU's strategic alliance partners,
by the total number of units in service at the beginning of the period.
Disconnect rates are stated as the monthly average of each period presented.
Further increases in our rate of disconnections may adversely affect our results
of operations.
 
     WE DEPEND ON KEY PERSONNEL. Our success is dependent, to a significant
extent, upon the continued services of our key executive officers. We do not
have employment agreements with any of our current executive officers. All
current executive officers have entered into non-competition agreements with the
Company. The loss or unavailability of one or more of our executive officers or
the inability to attract or retain key employees in the future could have an
adverse effect upon our operations.
 
     RISK OF INABILITY TO MANAGE GROWTH. Our future performance will depend upon
our ability to manage our growth effectively. We need to improve and expand our
operating, financial, accounting, information and customer service systems, and
to expand, train and manage our employee base. Our inability to expand in
accordance with our plans or to manage our growth could have a material adverse
effect on our business, financial condition and results of operations.
 
     RISKS OF RAPID TECHNOLOGICAL CHANGES. The telecommunications industry is
characterized by rapid technological change. Future technology advances in the
industry may result in the availability of new services or products that could
compete directly with our paging and other wireless messaging services. Changes
in technology could also lower the cost of competitive products and service to a
level where our products and services become less competitive or we are required
to reduce the prices of our services.
 
     WE DEPEND ON KEY SUPPLIERS. We do not manufacture any of the subscriber
units or infrastructure equipment used in our operations. We buy subscriber
units primarily from Motorola as well as other manufacturers and are dependent
on such manufacturers to obtain sufficient inventory for new subscriber and
replacement needs. We purchase terminals, transmitters, receivers and other
infrastructure equipment primarily from Motorola and Glenayre, and are dependent
on such manufacturers for sufficient infrastructure equipment to meet our
expansion and replacement requirements. We cannot assure you that the Company
will obtain subscriber units and infrastructure equipment in the future as
needed. See "Business -- Transmission Network -- Narrowband PCS Network
Buildout -- Equipment".
 
     RISK OF CHANGE IN REGULATORY ENVIRONMENT. The Company and the wireless
communications industry are subject to regulation by the FCC and various state
regulatory agencies. From time to time, legislation and regulations which could
potentially adversely affect the Company are proposed by federal and state
legislators. We cannot assure you that federal or state legislation or
regulations will not be adopted that would adversely affect our business.
 
EMPLOYEES
 
     At December 31, 1998, the Company had 2,446 full-time employees. No
employees of the Company are covered by a collective bargaining agreement, and
management believes the Company's relationship with its employees is good.
 
                                       19
<PAGE>   21
 
EXECUTIVE OFFICERS AND DIRECTORS OF REGISTRANT
 
     The Company's Board of Directors currently consists of eight members, which
number may be increased or decreased from time to time so long as there are no
fewer than three nor more than twelve members. The directors, executive officers
and other key officers of the Company, their positions with the Company, and
their ages as of January 31, 1998 are as follows:
 
<TABLE>
<CAPTION>
NAME                                    AGE                  POSITION
- ----                                    ---                  --------
<S>                                     <C>   <C>
John D. Beletic.......................  47    Chairman and Chief Executive Officer
N. Ross Buckenham.....................  41    President
Douglas H. Kramp......................  37    Executive V.P., Strategic Business
                                              Units
Frederick G. Anderson.................  47    V.P., General Counsel and Secretary
G. Clay Myers.........................  39    V.P., Finance, Chief Financial Officer
                                              and Treasurer
Allan D. Angus........................  48    V.P., Technical Strategy
Todd A. Bergwall......................  35    V.P., Law and Regulation
Bo Bernard............................  53    V.P., Market Sales
Jack D. Hanson........................  55    V.P., Network Services
Frances W. Hopkins....................  58    V.P., Customer Advocacy
Thomas C. Keys........................  40    V.P., Corporate Development
Bradley W. Kinzbach...................  43    V.P., Inventory and Distribution
Sandra D. Neal........................  50    V.P., Strategic Projects
Richard S. Nelson.....................  50    V.P., International; President of
                                              PageMart International, Inc.
Donna Regenbaum.......................  32    V.P., Marketing
W. Wayne Stargardt....................  46    V.P., Carrier Services Division
David Swift...........................  52    V.P., National Retail
Paul L. Turner........................  40    V.P., National Service Center
E. Russell Villemez...................  39    V.P., Information Systems and Chief
                                                Information Officer
Andrew R. Weisheit....................  39    V.P., National Accounts
Leigh J. Abramson(1)(2)...............  30    Director
Guy L. de Chazal(1)...................  51    Director
Steven B. Dodge.......................  53    Director
Michael C. Hoffman....................  37    Director
Arthur Patterson(1)...................  55    Director
Alejandro Perez Elizondo(2)...........  49    Director
Pamela D.A. Reeve(1)(2)...............  49    Director
</TABLE>
 
- ---------------
 
(1) Member of Compensation Committee
 
(2) Member of Audit Committee
 
     John D. Beletic, Chairman and Chief Executive Officer. Mr. Beletic joined
the Company as President and a director in March 1992. Mr. Beletic also became
Chief Executive Officer of the Company in February 1994 and Chairman of the
Company's Board in August 1994. In November 1997, Mr. Beletic continued as the
Chairman and Chief Executive Officer with Mr. Buckenham assuming the position of
President. Prior to joining the Company, Mr. Beletic spent a year in venture
capital, and he served for five years as President and Chief Executive Officer
of The Tigon Corporation ("Tigon"), a leading voice mail service provider. Tigon
was acquired by Ameritech Development Corporation, a wholly-owned subsidiary of
American Information Technologies Corporation in 1988. Before joining Tigon, Mr.
Beletic was Senior Vice President of Operations and Chief Financial Officer for
five years with VMX, Inc., a manufacturer of voice mail systems. Mr. Beletic
earned his bachelor's degree in finance from Cincinnati's Xavier University and
his MBA from the Harvard Business School. Mr. Beletic currently serves as a
director of Pulse Point Communications and Triton PCS Holdings, Inc. Within the
paging industry, Mr. Beletic currently serves as a director of the Personal
 
                                       20
<PAGE>   22
 
Communications Industry Association, the industry trade association, and
President of the Paging Leadership Association.
 
     N. Ross Buckenham, President. Mr. Buckenham joined the Company in January
1996 as Vice President, PCS Strategy, was promoted to Executive Vice President
and General Manager, PCS in September 1996, was promoted to Executive Vice
President, General Manager, PCS in May 1997 and was promoted to President in
November 1997. Prior to joining the Company, Mr. Buckenham was President of
Touchtone Solutions, Inc., a telecommunications and interactive voice response
software and services company from 1992 to 1996. From 1984 to 1991, Mr.
Buckenham was with Aquanautics Corporation, initially as Vice President of
Development then as its President. From 1981 to 1984, Mr. Buckenham was with
Bain & Co. as a senior consultant to companies in the voice processing,
technology, finance and health care industries. Mr. Buckenham holds an MBA
degree from Harvard Business School and a BS degree in Chemical Engineering from
Canterbury University, New Zealand.
 
     Douglas H. Kramp, Executive Vice President, Strategic Business Units. Mr.
Kramp joined the Company as a Vice President in August 1993, was promoted to
Executive Vice President, National Retail Business Unit in May 1997, and was
promoted to Executive Vice President, Strategic Business Units in November 1997.
Before joining PageMart, Mr. Kramp was President and co-founder of Artificial
Linguistics Inc. ("ALI"), a text management software company, from 1988 to 1993.
Before co-founding ALI, Mr. Kramp was responsible for starting up and managing
high technology companies for the Hart Group from 1984 to 1988.
 
     Frederick G. Anderson, Vice President, General Counsel and Secretary. Mr.
Anderson joined the Company in August 1997 as Vice President, General Counsel
and Secretary. Prior to joining the Company, Mr. Anderson was Senior Vice
President, General Counsel and Secretary of American Eagle Group, Inc., a public
specialty property and casualty insurance holding company, from March 1992
through July 1997. American Eagle's principal subsidiary, American Eagle
Insurance Company, was placed in receivership by the Texas Department of
Insurance in December 1997. Prior to joining American Eagle Group, Inc., Mr.
Anderson was engaged in the private practice of law as a partner in the
corporate and securities section of Akin, Gump, Strauss, Hauer & Feld, L.L.P.,
an international law firm.
 
     G. Clay Myers, Vice President, Finance, Chief Financial Officer and
Treasurer. Mr. Myers joined the Company in April 1993 as Vice President of
Finance and Chief Financial Officer. Prior to joining the Company, Mr. Myers was
Senior Operations Manager for Dell Computer Corporation from 1991 to 1993. Prior
to joining Dell Computer Corporation, Mr. Myers was with Ernst & Young, LLP from
1982 to 1991. Mr. Myers currently serves as Treasurer of the Paging Leadership
Association and Treasurer of the Personal Communication Wireless Alliance. Mr.
Myers is a certified public accountant.
 
     Allan D. Angus, Vice President, Technical Strategy. Mr. Angus joined the
Company in March 1996 as Director of Technology, and was promoted to Director of
PCS Technology in September, 1996. He was promoted to Vice President, Technology
in December 1997. Prior to joining the Company, Mr. Angus was Manager of
Regulatory and Standards for JRC International, Inc. and its predecessor,
NovAtel Communications, Ltd., for more than five years, where he served as a
representative to American and Canadian technology standards organizations and
was instrumental in developing many cellular standards.
 
     Todd A. Bergwall, Vice President, Law and Regulation. Mr. Bergwall joined
the Company as Corporate Counsel in June 1994. Mr. Bergwall was also Secretary
of the Company from April 1995 through August 1997. Mr. Bergwall was promoted to
Vice President, Law and Assistant General Counsel in August 1997. Mr. Bergwall
became Vice President of Law and Regulation in August 1998. From August 1989
until joining the Company, Mr. Bergwall was engaged in private practice with the
Dallas, Texas law firm Winstead Sechrest & Minick, P.C. specializing in
corporate and securities law.
 
     Bo Bernard, Vice President, Market Sales. Mr. Bernard joined the Company in
February 1997 as Vice President, Sales. In July 1997, he was promoted to Vice
President, Core Markets Sales, and in August 1998, he became Vice President of
Market Sales. Prior to joining the Company Mr. Bernard was Executive Vice
President and co-founder of ProNet, Inc., a publicly traded paging company, from
August 1982 to December 1996.
 
                                       21
<PAGE>   23
 
     Jack D. Hanson, Vice President, Network Services. Mr. Hanson joined the
Company in October 1993 as Vice President of Network Operations. Prior to
joining the Company, Mr. Hanson was Director of Engineering for Spectradyne,
Inc. from June 1992 to October 1993. Previously, he held senior engineering
positions with VMX, Inc. from December 1984 to June 1992, most recently as Vice
President of National Account Support.
 
     Frances W. Hopkins, Co-founder and Vice President, Customer Advocacy. Ms.
Hopkins co-founded the Company in 1989 and was Executive Vice President, Chief
Operations Officer until she left the Company in September 1990 to pursue other
business interests. Upon returning in July 1991, she was named Vice President,
Division General Manager. In 1995, Ms. Hopkins became Vice President, Customer
Advocacy. Before co-founding the Company, Ms. Hopkins was President of Multicom,
Inc., a subsidiary of PacTel Personal Communications for six years; President of
Gencell, the cellular subsidiary of Communications Industries; and founder of
TelPage, a regional paging company.
 
     Thomas C. Keys, Vice President, Corporate Development. Mr. Keys joined the
Company in January 1993 as Area Manager for the Company's largest West Coast
market. He became Sales Director and General Manager in April 1994. Mr. Keys was
promoted to Vice President of Arbitrage in September 1994, and to Vice President
of Market Development in August 1998. He was named Vice President of Corporate
Development in January 1999. Before joining the Company, Mr. Keys held the
position of Vice President of Sales at S.I.P., Inc., an industrial equipment
manufacturer, from December 1991 to December 1992. Previously, Mr. Keys held
several key management positions at Metromedia Corporation from August 1990 to
December 1991.
 
     Bradley W. Kinzbach, Vice President, Inventory and Distribution. Mr.
Kinzbach joined the Company in February 1994 as Manager, Inventory and
Distribution, was promoted to Vice President, Inventory and Distribution in
December 1997 and was named Vice President of Distribution in August 1998. Prior
to joining the Company, Mr. Kinzbach was Director of Distribution and held
various other management positions for Blockbuster Entertainment Corporation
from February 1986 to February 1994 and was President of BKCM Corporation, a
distributor of bottled water, from March 1992 until December 1993.
 
     Sandra D. Neal, Vice President, Strategic Projects. Ms. Neal joined the
Company as Vice President in July 1992. She was promoted to Executive Vice
President, Administration in January 1996 and became Executive Vice President,
Strategic Projects in January 1998. Prior to joining the Company, Ms. Neal was
Vice President of Customer Service for Tigon, a voice messaging service
provider, from 1989 to 1992. Previously, Ms. Neal held the positions of Vice
President of Finance and Controller at Tigon from 1986 to 1989. Before joining
Tigon, Ms. Neal was a practicing certified public accountant from 1979 to 1986.
 
     Richard S. Nelson, Vice President, International; President of PageMart
International, Inc. Mr. Nelson joined the Company as Vice President, Marketing
in June 1992. Mr. Nelson was named Vice President of International in March
1996. Before joining the Company, Mr. Nelson was Vice President of Marketing for
American Eagle, at American Airlines, where he held various staff positions from
1972 to May 1992.
 
     Donna Regenbaum, Vice President, Marketing. Ms. Regenbaum joined the
Company in July 1994 as Director of Market Development, and in July 1997 she
became Director of Products and Services. She was promoted to Vice President of
Marketing in May 1998. Prior to joining the Company, Ms. Regenbaum was enrolled
in the graduate business program of Harvard Business School. She received her
MBA degree in 1994.
 
     W. Wayne Stargardt, Vice President, Carrier Services Division. Mr.
Stargardt joined the Company in May 1996 as Vice President, Marketing. Mr.
Stargardt has been Vice President of Carrier Services since May 1998. Prior to
joining the Company, Mr. Stargardt served as Vice President of Marketing for
Pinpoint Communications Inc., a venture-funded start-up company developing a
wireless radiolocation-based mobile data network, from 1991 to May 1996.
 
     David Swift, Vice President, National Retail. Mr. Swift joined the Company
in May 1997 as Director of National Retail Marketing. He was promoted to Vice
President of National Retail in May 1998. Prior to joining the Company, Mr.
Swift was President of Sampling Plus, Inc., a promotional marketing company,
from June 1994 until May 1997. He was Senior Vice President, Marketing of
Greyhound Lines, Inc., a
                                       22
<PAGE>   24
 
national bus line, from April 1993 through May 1994. Prior thereto Mr. Swift
held several marketing positions with Frito-Lay, most recently as Marketing
Director.
 
     Paul L. Turner, Vice President, National Service Center. Mr. Turner joined
the Company as Vice President, Customer Service March 1994. He was named Vice
President of National Service Center in August 1998. Before joining the Company,
Mr. Turner was with MCI from 1984 to 1994 in positions of increasing
responsibility. From 1990 to 1994 he held various management positions, the most
recent being Senior Manager, MCI Consumer Markets.
 
     E. Russell Villemez, Vice President, Information Systems and Chief
Information Officer. Mr. Villemez joined the Company in September 1998 as Vice
President of Information Systems and Chief Information Officer. From April 1996
to September 1998, Mr. Villemez was an independent consultant in the area of
information technology strategy for telecommunications companies such as AT&T
and Bell Atlantic. Prior to that, Mr. Villemez directed information technology
consulting in the telecommunications industry for A.T. Kearney from August 1993
to April 1996. Mr. Villemez has also been Director of Distributed Systems
Architecture for Sprint, and was employed at Andersen Consulting prior to that.
 
     Andrew R. Weisheit, Vice President, National Accounts. He joined the
Company in January 1995 as Director, Strategic Alliances and was promoted to
Vice President, Carrier Services Division in November 1997. Mr. Weisheit was
named Vice President of National Accounts in April 1998. Prior to joining the
Company, Mr. Weisheit was Branch Manager with Paging Network, Inc. for two
years. Previously, Mr. Weisheit was with Owens-Corning Fiberglas for nine years
where held various management positions of increasing responsibility.
 
     Leigh J. Abramson, Director. Mr. Abramson has been a Director of the
Company since August 1994. He is currently a Vice President of Morgan Stanley &
Co. Incorporated ("Morgan Stanley") and of Morgan Stanley Dean Witter Capital
Partners. Mr. Abramson has been with Morgan Stanley since 1990, first in the
Corporate Finance Division and, since 1992, in the Private Equity Division. Mr.
Abramson is also a Director of Silgan Holdings. Mr. Abramson was designated by
Morgan Stanley Capital Partners III, L.P. ("MSCP III") pursuant to the Amended
and Restated Stockholders Agreement among the Company and certain stockholders
of the Company dated as of May 10, 1996, as amended (the "Stockholders
Agreement").
 
     Guy L. de Chazal, Director. Mr. de Chazal has been a Director of the
Company since June 1989. Mr. de Chazal is a Managing Director of Morgan Stanley
and is President and a general partner of Morgan Stanley Dean Witter Venture
Partners. Mr. de Chazal joined Morgan Stanley in 1984. Mr. de Chazal is also a
director of several private companies. Mr. de Chazal was designated by Morgan
Stanley Venture Capital Fund, L.P. ("MSVCF") pursuant to the Stockholders
Agreement.
 
     Steven B. Dodge, Director. Mr. Dodge has been a Director of the Company
since November 1998. Mr. Dodge is Chairman and Chief Executive Officer of
American Tower Corporation ("ATC"), a leading independent owner and operator of
wireless communications towers in the United States. Prior to joining ATC, Mr.
Dodge founded and was the Chairman of the Board, President and CEO of American
Radio Systems Corporation ("ARS"), an independent owner and operator of radio
stations, a position he occupied from ARS' founding in November, 1993 until its
merger with CBS Corporation. In addition, Mr. Dodge founded Atlantic Radio, L.P.
in 1988, which was one of the predecessor entities of ARS. Prior to forming
Atlantic Radio, L.P., Mr. Dodge founded and served as Chairman and CEO of
American Cablesystems Corporation, a cable television company. Currently, Mr.
Dodge is also a Director of Sensitech, Inc. and Jobson Publishing, L.L.C.
 
     Michael C. Hoffman, Director. Mr. Hoffman has been a Director of the
Company since March 1999. Mr. Hoffman is a Managing Director of Morgan Stanley
and of Morgan Stanley Dean Witter Capital Partners. Mr. Hoffman joined Morgan
Stanley in 1986. Mr. Hoffman was designated by The Morgan Stanley Leveraged
Equity Fund II, L.P. ("MSLEF II") pursuant to the Stockholders Agreement.
 
     Arthur Patterson, Director. Mr. Patterson has been a Director of the
Company since June 1989 and a Managing Partner of Accel Partners, a venture
capital company since 1984. Mr. Patterson is also a director of
 
                                       23
<PAGE>   25
 
VIASOFT, Unify, Portal Software and the AIM Funds as well as several private
software and telecommunications companies. Mr. Patterson was designated by Accel
Partners pursuant to the Stockholders Agreement.
 
     Alejandro Perez Elizondo, Director. Mr. Perez has been a Director of the
Company since August 1994. Since 1987, Mr. Perez has been associated with
Pulsar, a diversified Mexican company with interests in the insurance,
agriculture, telecommunications, finance and other industries, and is currently
Vice President of Diversification of Pulsar Internacional, S.A. de C.V. Mr.
Perez is also a director of Ionica L3 Ltd. (a public telephone services company
located in the U.K.), Novaweb Technologies, Inc. (a California modem
manufacturing company), Encanto Networks Inc. (a California internet company),
Fomento Empresarial Regiomontano, S.A. de C.V. (a Mexico-based holding company
with investments in telecommunications companies), and Merkafon (a Mexico-based
communications engineering company). Mr. Perez was designated by Pulsar pursuant
to the Stockholders Agreement.
 
     Pamela D. A. Reeve, Director. Ms. Reeve has been a Director of the Company
since April 1996. Ms. Reeve is President, Chief Executive Officer and Director
of Lightbridge, Inc. ("Lightbridge") and has been with Lightbridge since 1989.
Lightbridge develops and manages software used by wireless telecommunications
companies across the United States to support sales and marketing applications.
Prior to joining Lightbridge, Ms. Reeve spent eleven years at The Boston
Consulting Group, with senior operating responsibility for the firm's Boston
office. Prior to joining The Boston Consulting Group, Ms. Reeve worked with the
National Endowment for the Humanities managing educational projects and with
real estate development and manufacturing firms, primarily in operations and
marketing. Ms. Reeve is also a director of Natural Microsystems, Inc.
 
CORPORATE STRUCTURE
 
     PageMart Wireless was incorporated in Delaware on November 29, 1994 as a
wholly-owned subsidiary of PageMart, Inc. Effective January 19, 1995, PageMart,
Inc. merged with a wholly-owned subsidiary of PageMart Wireless, pursuant to
which PageMart was the surviving corporation (the "Reorganization"). As part of
the Reorganization, each share of outstanding common stock of PageMart was
converted into one share of common stock of PageMart Wireless. Upon consummation
of the Reorganization, the stockholders of PageMart, Inc. had the same ownership
interest in PageMart Wireless as they had in PageMart, Inc., and PageMart
Wireless owned all of the capital stock of PageMart, Inc. On December 28, 1995,
the name of PageMart Wireless was changed from PageMart Nationwide, Inc. to
PageMart Wireless, Inc. On January 28, 1998, PageMart, Inc. was merged into
PageMart Wireless, which was the surviving corporation in the merger.
 
ITEM 2. PROPERTIES
 
     The principal tangible assets of the Company are its messaging network
equipment, which includes switching terminals, transmitters, receivers and a
host of related equipment such as satellite and digital link controllers,
satellite dishes, antennas, cable, etc. The Company continues to add equipment
to its messaging network as it expands to new service areas and completes the
buildout of its narrowband PCS network. To date, it has not experienced any
material difficulty or delay in obtaining network equipment as needed.
 
     The Company acquired the narrowband PCS Licenses in auctions held by the
FCC. The narrowband PCS Licenses permit the nationwide operation of the
narrowband PCS network with 100kHz of outbound capacity and 50kHz of return
capacity.
 
     The Company generally leases the locations used for its transmission and
receiving facilities under operating leases. These leases, which are generally
for five years or less, provide for aggregate annual rental charges of
approximately $18.3 million as of December 31, 1998. The Company does not
anticipate material difficulty in renewing these leases or finding equally
suitable alternate facilities on acceptable terms.
 
     The Company leases approximately 162,000 square feet of office space for
its corporate headquarters in Dallas, Texas. The lease will have an annual cost
of approximately $2.4 million in 1999, and is subject to annual escalations
during the term of the lease. The lease expires on January 31, 2008, and the
Company has the option to renew it for an additional five year term. The Company
leases varying amounts of space for local
 
                                       24
<PAGE>   26
 
offices, call centers and other facilities at various locations. Aggregate
annual rental charges under these leases were approximately $6.0 million as of
December 31, 1998.
 
ITEM 3. LEGAL PROCEEDINGS
 
     The Company is involved in various lawsuits arising in the normal course of
business. In management's opinion, the ultimate outcome of these lawsuits will
not have a material adverse effect on the results of operations or financial
condition of the Company.
 
     On October 27, 1997, an action against PageMart, Inc. and Paging Network,
Inc. was filed in Superior Court of the State of California, County of San
Francisco, by two customers of EconoPage, Inc. ("EconoPage"), a reseller of the
Company's services that had resold PageMart, Inc's paging services to
approximately 38,000 customers. PageMart, Inc. terminated the reseller agreement
due to monetary default by EconoPage. In the complaint, plaintiffs have
requested class action status on behalf of EconoPage customers and allege that
EconoPage was an agent of PageMart, Inc., that PageMart, Inc. was aware that
EconoPage's pricing would not permit it to sustain its business and PageMart,
Inc. permitted EconoPage to continue to enter into service contracts with
customers while EconoPage was having serious financial difficulties. The
complaint alleges violation of statute, fraud and negligent misrepresentation by
PageMart, Inc., and requested injunctive relief as well as compensatory,
punitive, special and incidental damages in an unspecified amount. PageMart,
Inc. denies all claims. Discovery has proceeded and plaintiffs filed a motion
for class certification. After briefing and oral arguments, the court denied
plaintiff's motion. Plaintiffs appealed the denial of class certification and
then withdrew the appeal. PageMart, Inc. filed a motion to transfer the case to
municipal court. The motion is currently pending. The Company will continue to
defend this action vigorously. The Company does not expect the ultimate outcome
of this suit to have a material adverse effect on its results of operations or
financial condition.
 
     On March 20, 1998, an action against the Company and Paging Network, Inc.
was filed in Superior Court of the State of California, County of Los Angeles,
by three customers of EconoPage of Southern California, Inc. ("EPSC"), a
reseller of the Company's services that had resold the Company's paging services
to approximately 12,000 customers. The Company terminated the reseller agreement
when EPSC ceased operations on March 4, 1998. In the complaint, plaintiffs
requested class action status on behalf of EPSC customers and allege that EPSC
was an agent of the Company, that the Company was aware that EPSC's pricing
would not permit it to sustain its business and the Company permitted EPSC to
continue to enter into service contracts with customers while EPSC was having
serious financial difficulties. The complaint alleged violation of statute,
fraud and negligent misrepresentation by the Company, and requested injunctive
relief as well as compensatory, punitive, special and incidental damages in an
unspecified amount. Paging Network, Inc. demurred to plaintiff's complaint on
the grounds that it did not state facts sufficient to constitute a cause of
action. The court sustained the demurrer without leave to amend the fraud and
negligent misrepresentation causes of action, and it sustained with leave to
amend the statutory violation cause of action if plaintiffs could allege that
defendants knew EPSC was going to fail but continued to allow their names to be
used to solicit customers. Plaintiffs filed a second amended complaint that
states only a statutory violation cause of action against defendants. The
Company has demurred to the second amended complaint on grounds similar to the
demurrer to the original complaint. Plaintiffs requested leave of the court to
file a third amended complaint adding a request to proceed with a representative
action under Section 17200 of the California Business and Professions Code. The
court granted the request for leave to amend and transferred the case to a court
that specialized in those types of cases. PageMart filed a demurrer and a motion
to transfer the case to municipal court, the jurisdictional amount of which is
$5,000, and the court granted the demurrer and the motion to transfer.
Plaintiffs filed a motion in the original court in an attempt to revive the
class action allegations, but the court denied the motion. The Company denies
all claims and will defend this action vigorously. The Company does not expect
the ultimate outcome of this suit to have a material adverse effect on its
results of operations or financial condition.
 
ITEM 4. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS.
 
     None.
                                       25
<PAGE>   27
 
                                    PART II
 
ITEM 5. MARKET FOR THE REGISTRANT'S COMMON EQUITY AND RELATED STOCKHOLDERS
MATTERS
 
     The Company's Class A Common Stock, $0.0001 par value, is listed on the
Nasdaq National Market System under the symbol PMWI. There currently is no
public market for the Company's Class B, Class C or Class D Common Stock. Class
A Common Stock is convertible by certain holders thereof into either Class B or
C Common Stock. Classes B, C and D Common Stock are convertible into Class A
Common Stock. The following table indicates the high and low sales prices for
shares of the Company's Class A Common Stock for the last two years:
 
<TABLE>
<S>                                                           <C>           <C>
1997:
  First Quarter.............................................    $ 7 5/8        $4 3/8
  Second Quarter............................................    $ 9 1/2        $4 7/8
  Third Quarter.............................................    $11 3/8        $7
  Fourth Quarter............................................    $13 1/4        $7 1/2
1998:
  First Quarter.............................................    $10 7/16       $7
  Second Quarter............................................    $10 7/8        $8 7/16
  Third Quarter.............................................    $10 1/16       $6 1/4
  Fourth Quarter............................................    $ 8 3/4        $5
</TABLE>
 
     As of January 31, 1999, the Company's Class A, Class B, Class C and Class D
Common Stock was held by approximately 212, 8, 2 and 2 holders of record,
respectively. Management believes there were approximately 3,000 beneficial
holders at January 31, 1999.
 
     The Company has not paid dividends on the common stock since its
organization in 1989. The Company currently intends to retain future earnings
for the development of its business and does not anticipate paying cash
dividends on its common stock in the foreseeable future. The Company's future
dividend policy will be determined by its Board of Directors on the basis of
various factors, including the Company's results of operations, financial
condition, capital requirements and investment opportunities. In addition, the
Company's debt instruments substantially restrict (and currently prohibit) the
payment of cash dividends.
 
                                       26
<PAGE>   28
 
ITEM 6. SELECTED FINANCIAL DATA
 
     The following table sets forth summary historical financial information and
operating data for each of the five fiscal years ended December 31, 1998. The
financial information and operating data were derived from, and should be read
in conjunction with, "Management's Discussion and Analysis of Financial
Condition and Results of Operations" and the Consolidated Financial Statements
of the Company and the notes thereto included elsewhere in this Report.
 
<TABLE>
<CAPTION>
                                                                  FISCAL YEAR ENDED DECEMBER 31,
                                              ----------------------------------------------------------------------
                                                 1994          1995           1996           1997           1998
                                              ----------   ------------   ------------   ------------   ------------
                                               (IN THOUSANDS, EXCEPT UNIT, PER SHARE, ARPU AND PER SUBSCRIBER DATA)
<S>                                           <C>          <C>            <C>            <C>            <C>
STATEMENT OF OPERATIONS DATA:
Recurring revenues..........................   $ 56,648     $  101,503     $  153,041     $  206,907     $  254,814
Equipment sales and activation fees.........     53,185         57,688         68,551         70,871         56,838
                                               --------     ----------     ----------     ----------     ----------
Total revenues..............................    109,833        159,191        221,592        277,778        311,652
Cost of equipment sold......................     57,835         63,982         78,896         86,175         69,150
                                               --------     ----------     ----------     ----------     ----------
                                                 51,998         95,209        142,696        191,603        242,502
Operating expenses..........................     85,322        118,557        155,265        194,194        240,052
                                               --------     ----------     ----------     ----------     ----------
Operating income (loss).....................    (33,324)       (23,348)       (12,569)        (2,591)         2,450
Interest expense............................    (12,933)       (30,720)       (35,041)       (38,499)       (43,798)
Interest income.............................        858          1,997          1,140            501          3,187
Other.......................................       (414)        (1,042)        (2,128)        (3,298)        (3,549)
                                               --------     ----------     ----------     ----------     ----------
Loss before extraordinary item..............   $(45,813)    $  (53,113)    $  (48,598)    $  (43,887)    $  (41,710)
                                               ========     ==========     ==========     ==========     ==========
Loss before extraordinary item per common
  share.....................................   $  (1.72)    $    (1.53)    $    (1.30)    $    (1.10)    $    (1.03)
Weighted average number of common shares and
  share equivalents outstanding.............     26,574         34,653         37,462         39,922         40,246
BALANCE SHEET DATA (AT PERIOD END):
Current assets..............................   $ 44,397     $   62,535     $   70,572     $   84,133     $   74,537
Total assets................................    142,059        263,829        313,620        361,876        494,055
Current liabilities.........................     37,966         56,508         62,503        104,973        120,750
Long-term debt, less current maturities.....     92,632        219,364        240,687        289,344        462,079
Stockholders' equity (deficit)..............     11,461        (12,043)        10,430        (32,441)       (90,022)
OTHER DATA:
Units in service (at period end)............    772,730      1,240,024      1,859,407      2,530,737      2,651,004
Net subscriber additions....................    445,427        467,294        619,383        671,330        120,267
ARPU(1).....................................   $   8.64     $     8.62     $     8.04     $     7.80     $     8.06
EBITDA(2)...................................    (25,219)       (10,076)         8,623         27,261         45,870
Capital expenditures........................     16,719         33,503         63,804         67,506        168,546
Dividends Paid/Declared.....................         --             --             --             --             --
Depreciation and amortization...............      8,105         13,272         21,192         29,852         43,420
Deficiency of earnings to fixed
  charges(3)(4).............................    (45,813)       (53,113)       (48,598)       (43,887)       (70,511)
</TABLE>
 
- ---------------
 
(1) Average monthly revenue per unit ("ARPU") is calculated by dividing (i)
    domestic recurring revenues, consisting of fees for airtime, voice mail,
    customized coverage options, excess usage fees and other recurring revenues
    and fees associated with the subscriber base for the quarter by (ii) the
    average number of domestic units in service for the quarter. ARPU is stated
    as the monthly average for the final quarter of the period.
 
(2) EBITDA represents earnings (loss) before interest, taxes, depreciation,
    amortization, other expenses and extraordinary items. EBITDA is a financial
    measure commonly used in the paging industry. EBITDA is not derived pursuant
    to generally accepted accounting principles ("GAAP") and therefore should
    not be construed as an alternative to operating income, as an alternative to
    cash flows from operating activities (as determined in accordance with GAAP)
    or as a measure of liquidity. The calculation of EBITDA does not include the
    commitments of the Company for capital expenditures and payment of debt and
    should not be deemed to represent funds available to the Company. See
    "Management's Discussion and Analysis of Financial Condition and Results of
    Operations" for a discussion of the financial operations and liquidity of
    the Company as determined in accordance with GAAP.
 
(3) For purposes of calculating the deficiency of earnings to fixed charges, (i)
    earnings is defined as net loss plus fixed charges and (ii) fixed charges as
    interest expense plus amortization of debt issuance costs and the interest
    portion of rental and lease expense.
 
(4) The 1998 deficiency of earnings to fixed charges is increased by $17.6
    million in extraordinary items and $11.4 million of capitalized interest
    incurred during the year ended December 31, 1998.
 
                                       27
<PAGE>   29
 
ITEM 7. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
OF OPERATIONS
 
     The following is a discussion of the results of operations and financial
condition of the Company for the three years ended December 31, 1998. This
discussion should be read in conjunction with the Company's Consolidated
Financial Statements and the notes thereto included elsewhere in this report.
Certain prior year's amounts have been reclassified to conform with the current
year presentation.
 
     This Form 10-K contains statements that constitute forward-looking
statements. The words "estimate," "project," "plan," "expect," "believe" and
similar expressions are intended to identify forward-looking statements. Readers
are cautioned that such forward-looking statements involve risks and
uncertainties, and are subject to change based on various important factors. The
factors set forth in other filings with the Securities Exchange Commission and
the following factors, among others, in some cases have affected and in the
future could affect the Company's financial performance and could cause actual
results for 1999 and beyond to differ materially from those expressed in any
such forward-looking statements -- economic conditions and consumer confidence
generally in the United States; the ability of the Company to manage its high
outstanding indebtedness; the impact of technological change in the
telecommunications industry; the future cost of network infrastructure and
subscriber equipment; the impact of competition and pricing of paging and
wireless services; the timely development and acceptance of new products; change
in regulation by the FCC and various state regulatory agencies; potential
technical problems relating to the Company's transmission network for advanced
messaging services; and the cost and ability of the Company and third parties
upon whose products and services the Company depends to be Year 2000 ready in a
timely manner.
 
GENERAL
 
     Through its PageMart Paging division, the Company has constructed and
operates a wireless messaging and communications network and provides paging and
other one-way wireless messaging services to its subscribers. Through its
PageMart PCS division, the Company has constructed and operates an advanced
messaging network as an overlay of its one-way network. In June 1998, the
Company launched commercial advanced messaging services in its first two local
markets, Austin and San Antonio, Texas. On December 15, 1998, the Company
launched nationwide advanced messaging services covering approximately 70% of
the U.S. population. The Company has incurred significant capital expenditures
and expects to incur significant operating losses and additional capital
expenditures associated with the implementation and deployment of its advanced
messaging services.
 
     The Company sells and leases wireless messaging end-user devices to
subscribers, retailers and resellers. The Company earns recurring revenues from
each subscriber in the form of fixed periodic fees and incurs substantial
operating expenses in offering its services, including technical, customer
service and general and administrative expenses.
 
     Since commencing operations in 1990, the Company has invested heavily in
its wireless communications network and administrative infrastructure in order
to establish nationwide coverage, sales offices in major metropolitan areas,
centralized customer service call centers and administrative support functions.
The Company incurs substantial fixed operating costs related to its wireless
communications infrastructure, which is designed to serve a larger subscriber
base than the Company currently serves in order to accommodate growth. In
addition, the Company incurs substantial costs associated with new subscriber
additions. The Company has sustained consolidated operating losses in each year
of operations from inception through the period ending December 31, 1997.
Although the Company recognized a $2.5 million operating profit for the period
ending December 31, 1998, the Company has sustained an aggregate $12.7 million
operating loss for the three year period ended December 31, 1998. The Company
expects to continue to incur operating losses for the next several years.
 
     The Company's strategy is to expand its subscriber base to increase
profitability and cash flow through greater utilization of its nationwide
wireless communications network. From January 1, 1992 to December 31, 1998, the
number of domestic one-way units in service increased from 52,125 to 2,618,527.
None of the Company's growth is attributable to acquisitions. The Company
intends to achieve unit growth by promoting its customized paging and other
wireless messaging services through its sales offices, national retail
distribution
                                       28
<PAGE>   30
 
channels, private brand strategic alliances with telecommunication companies
such as GTE Corporation, Southwestern Bell Mobile Systems, WorldCom Network
Services, Inc., Ameritech Mobile Services, Inc., EXCEL Communications, Inc.,
ALLTEL Communications, Inc., BellSouth Cellular Corp., Bluegrass Cellular, Inc.
and First Cellular of Southern Illinois, as well as international expansion.
Given the fixed operating costs of its wireless networks and administration and
selling and marketing expenses associated with its growth strategy, the Company
generated operating losses in 1997 from its PageMart Paging division. In the
third quarter of 1997, the Company began generating operating profits in its
PageMart Paging division. The PageMart Paging division generated operating
profits for each quarter in 1998 and management expects this trend to continue
in 1999.
 
     The Company has historically sold, rather than leased, substantially all
subscriber units used by its subscribers. As a result, the Company has had much
less capital invested in subscriber units than other paging carriers since it
has recouped a substantial portion of subscriber unit costs upon sale to
retailers and subscribers. This has resulted in significantly lower capital
expenditures and depreciation expense than if the Company had leased units to
its subscribers. In addition, the Company's financial results are much different
than other paging carriers that lease subscriber units to subscribers because
the Company recognizes the cost of subscriber units sold in connection with
adding new subscribers at the time of sale rather than capitalizing and
depreciating the cost of subscriber units over periods ranging from three to
four years, as occurs with paging carriers that lease subscriber units to
subscribers. In addition, the Company's retail distribution strategy results in
the recognition of expenses associated with subscriber unit sales and other
sales and marketing expenses in advance of new subscribers being added to the
base and generating revenues (as retailers carry inventory). However, the
Company expects to lease a substantial portion of its advanced messaging
subscriber units as initial sales of advanced messaging services are expected to
be dominated by business and corporate customers and because of the high cost of
advanced messaging subscriber units compared to one-way messaging units.
 
     The Company sells and leases its subscriber units through the following
distribution channels: (i) direct sales and third party resellers through its
Markets Strategic Business Unit ("SBU"), (ii) private brand strategic alliances
through its Carrier Services SBU, (iii) national retail stores through its
National Retail SBU and (iv) direct sales through its National Accounts SBU. At
December 31, 1998, 26% of the Company's total units in service originated from
the National Retail SBU, 37% originated from the Carrier Services SBU and 37%
originated from the Markets SBU.
 
     For competitive and marketing reasons, the Company generally sells each new
unit to national retailers for less than its acquisition cost. Management
anticipates that the loss on equipment sold in the National Retail SBU will
generally remain constant on a per unit basis for the foreseeable future. The
Company's accounting practices result in selling and marketing expenses,
including loss on sales of equipment, being recorded at the time a unit is sold.
The Company expects its costs of subscriber units on a per unit basis generally
to remain constant or decline slightly as sales volumes increase. Units sold by
the Company during a given month may exceed units activated and in service due
to inventory stocking and distribution strategies of retailers.
 
     In the third quarter of 1998, the Company announced the formation of its
Telemetry SBU and the signing of a strategic alliance with Interactive
Technologies, Inc. for wireless connectivity to home security systems. During
the fourth quarter of 1998, the Company announced the signing of strategic
alliances with Pentech Energy Solutions, Inc. for wireless connectivity to
environmental control systems, Road Trac, LLC to provide telemetry solutions for
vehicle location technology and Monitel Products Corp. to provide remote
monitoring and diagnostic products for the photocopy and imaging industry. The
Company does not expect the Telemetry SBU to generate revenues until late in
1999.
 
     The Company derives its recurring revenue primarily from fixed periodic
fees for services that are not generally dependent on usage. Consequently, the
Company's ability to recoup its initial selling and marketing costs, to meet
operating expenses and to achieve profitability is dependent on the average
length of each customer's subscription period. As long as a subscriber continues
to utilize the Company's service, operating results benefit from the recurring
payments of the fixed fees without the incurrence of additional selling
 
                                       29
<PAGE>   31
 
expenses by the Company. Conversely, operating results are adversely affected by
customer disconnections. Each month a percentage of the Company's existing
customers have their service terminated for a variety of reasons, including
failure to pay for service, dissatisfaction with service and switching to a
competing service provider. The Company's average monthly disconnection rates
for the years ended December 31, 1996, 1997, and 1998 were 2.4%, 2.5% and 3.2%,
respectively. Average monthly disconnect rates are calculated by dividing the
sum of (i) direct subscriber disconnections, (ii) negative subscriber additions
from the local, regional and reseller channel, taken as a whole and (iii) the
cumulative negative subscriber additions from each of the Carrier Services SBU's
strategic alliance partners, included in the Carrier Services SBU by the total
number of units in service at the beginning of the period. Disconnect rates are
stated as the monthly average of each period presented.
 
     Approximately 90% of the Company's average revenue per unit ("ARPU") is
attributable to fixed fees for airtime, coverage options and features. A portion
of the remainder is dependent on usage. Management anticipates that the
Company's one-way ARPU will remain constant or decline slightly in the
foreseeable future due to a continued higher mix of subscribers added through
private brand strategic alliance programs, which yield lower ARPU because
strategic alliance partners are generally high volume customers that are charged
wholesale airtime rates. However, because private brand strategic alliance
partners are responsible for selling and marketing costs, billing, collection
and other administrative costs associated with end-users, the Company incurs
substantially lower marketing and administrative costs with respect to such
subscribers. Management anticipates that the Company's consolidated ARPU will
increase as subscriber additions for its advanced messaging services increase,
since advanced messaging yields a significantly higher ARPU than one-way
messaging.
 
     On May 19, 1998, the Company and many other paging companies experienced an
unprecedented interruption of service when the PanAmSat Galaxy IV communications
satellite, on which the Company leased capacity, ceased to communicate with
paging uplink stations throughout the United States. Management believes that
this is the first event of its kind to affect the paging industry in the 35-year
history of satellite telecommunications. This event occurred when the
satellite's onboard control system and a back-up control system failed and
PanAmSat technicians were unable to restore the satellite's proper orientation
toward Earth.
 
     The Company initiated its recovery plan by re-orienting its satellite links
to its back-up satellites. In order to re-orient the satellite links, the
Company realigned satellite dish antennas on each of its approximately 2,000
transmission sites to receive the back-up satellites' signals. Although the
satellite failure was beyond the Company's control, the Company provided its
customers with a two-day airtime credit to compensate them for the period when
they were unable to receive messages. The Company incurred $3.8 million of costs
(including the airtime credit) during the three months ended June 30, 1998 and
has recorded these costs as an extraordinary charge.
 
RESULTS OF OPERATIONS
 
     The Company's principal operations to date are its domestic one-way
wireless operations of its PageMart Paging division. The following discussion of
results of operations analyzes the results of the Company's PageMart Paging
division (i.e., domestic one-way wireless messaging operations), unless
otherwise indicated.
 
     Certain of the following financial information is presented on a per
subscriber unit per month basis. Management of the Company believes that such a
presentation is useful in understanding the Company's results because it
provides a meaningful comparison period-to-period, given the Company's growth
rate and the significant differences in the number of subscribers of other
paging companies.
 
                                       30
<PAGE>   32
 
  FISCAL YEARS 1996, 1997 AND 1998
 
     Units in Service
 
     Units in service from domestic one-way paging operations were, 1,851,445,
2,513,337 and 2,618,527 as of December 31, 1996, 1997 and 1998, respectively.
This represents an annual growth rate of 49%, 36% and 4% in 1996, 1997 and 1998,
respectively. In addition, for the years ended December 31, 1996, 1997, and
1998, PageMart Canada's units in service were 13,270, 29,000 and 52,836,
respectively. As a result of its ownership interest in PageMart Canada, the
Company's proportional share of the units in service of PageMart Canada was
7,962, 17,400 and 31,702 units at December 31, 1996, 1997, and 1998. As of
December 31, 1998, the Company had 775 advanced messaging units in service.
 
     The Company experienced historically weak fiscal quarters in terms of net
subscriber additions in the third and fourth quarters of 1998, with the fourth
quarter resulting in net losses. Management believes that a majority of the
reasons are specific to the Company, however, a general slowing in the market
for traditional one-way paging services was also a contributing factor. In the
opinion of management, demand appears to be shifting away from traditional
one-way paging services to the higher quality and greater benefits of advanced
messaging services.
 
     Several things contributed to the Company specific reasons for the decline
in net subscriber additions in the third and fourth quarters of 1998. The
Company's primary pager supplier, Motorola, Inc., experienced significant
manufacturing problems in the production of the Synapse(TM) pager card for the
PalmPilot and delays in the introduction of a new pager product line that
negatively affected the Company's sales. Also contributing to reduced net
subscriber additions was an increase in the Company's composite churn rate from
2.8% in the second quarter to 3.1% in the third quarter and to 4.1% in the
fourth quarter of 1998. There were several reasons for this increase aside from
the general slowing of the market. Additional subscriber disconnects resulted
from a price increase implemented for direct bill customers that were below the
Company's standard pricing and profitability levels. The local reseller channel
continued to experience volatility. Also, higher volatility was experienced in
the strategic alliance distribution channel during the third and fourth quarters
of 1998, primarily as a result of a review and update of customer database
information by strategic alliance partners. Finally, the Company's National
Retail SBU experienced an increase in disconnect rates, which resulted in net
reductions in units in service in the fourth quarter of 1998. Management
believes that the current dynamics in the retail marketplace have resulted in
attracting new subscribers which have a higher propensity to disconnect. As a
consequence, several of the Company's national retail programs are being
modified to address these dynamics. These modifications are expected to reduce
the Company's overall costs of delivering products and services to the national
retail distribution channel during 1999.
 
     Historically, the Company has grown its subscriber base at a faster rate
than the overall paging industry's subscriber growth rate. Management does not
anticipate that the Company's one-way paging business will continue to grow at
rates that are significantly higher than the overall industry rate. Management
expects the one-way paging division to experience net subscriber losses in the
first quarter of 1999, offset somewhat by advanced messaging subscriber
additions. Certain factors may cause net subscriber additions to be negative in
any quarter of 1999, including more severe volatility in local reseller and
strategic alliance channels or an increase in disconnect rates.
 
     Revenues
 
     Revenues for the fiscal years 1996, 1997 and 1998 were $221.6 million,
$277.6 million and $311.5 million, respectively. Recurring revenues for airtime,
voice mail and other services for the same periods were $153.0 million, $206.9
million, and $254.8 million, respectively. Revenues from equipment sales and
activation fees for 1996, 1997 and 1998 were $68.6 million, $70.7 million and
$56.7 million, respectively. The increases in recurring revenues and revenues
from equipment sales from 1996 to 1997 and recurring revenues from 1997 to 1998
were primarily due to the increase in the total number of units in service. The
decrease in equipment sales during the year ended December 31, 1998, was
primarily due to a decline in the rate of growth in national retail outlets.
 
                                       31
<PAGE>   33
 
     The Company's ARPU was $8.04, $7.80 and $8.06 in the final quarter of 1996,
1997 and 1998, respectively. The decline in 1997 resulted primarily from an
increase in subscribers added through private brand strategic alliance channels.
This decrease in ARPU was offset partially by a higher mix of multi-city,
regional and nationwide services as well as increased sales of other value-added
services such as voice mail and toll-free numbers. The increase in ARPU in 1998
is primarily attributable to an increase in alphanumeric services in the
traditional one-way paging operation, as well as a decrease in the number of
subscriber units deployed in the local reseller distribution channel, which
generally has low ARPU. Over the past year, the Company's ARPU has varied by
less than 4 percent. Management expects ARPU to remain relatively stable in the
foreseeable future with minor variations from changes in distribution mix.
 
     Cost of Equipment Sold
 
     The cost of equipment sold in 1996, 1997 and 1998 was $78.9 million, $86.0
million and $68.9 million, respectively. The increase from 1996 to 1997 was
primarily due to an increase in the number of retail outlets along with an
increase in the number of units sold. The decrease in 1998 was primarily
attributable to a decline in the rate of growth in national retail outlets.
During the twelve months ended December 31, 1996, 1997 and 1998, the Company
added 2,119, 7,394 and 2,820 new national retail outlets, respectively. In 1997,
the Company made a concerted effort to expand its retail distribution
capabilities by aggressively increasing the number of retail outlets. However,
in 1998, the number of retail outlets has stabilized as a result of the Company
obtaining sufficient market share. The Company expects pager costs generally to
remain constant, with modest reductions in cost to the Company as a result of
volume purchase discounts. The loss on equipment sold (equipment revenue less
cost of equipment sold) is recognized when pagers are shipped to the retailers,
usually before the units are placed into service.
 
     Operating Expenses
 
     Technical expenses were $36.7 million, $46.5 million and $52.2 million in
1996, 1997 and 1998, respectively. The increases were primarily due to increased
telecommunications and site expenses associated with servicing the Company's
expanded network and larger subscriber base. Based on an average monthly cost
per unit in service, technical expenses were $1.98, $1.78 and $1.69 in 1996,
1997 and 1998, respectively. The per unit decreases were the result of increased
operating efficiencies and economies of scale achieved through the growth of the
Company's subscriber base. During the year ended December 31, 1998, the Company
incurred $4.4 million in technical expense associated with advanced messaging.
 
     Selling expenses in 1996, 1997 and 1998 were $42.6 million, $50.8 million
and $52.6 million, respectively. From 1996 to 1997, the increase resulted from
greater marketing and advertising costs related to the growth in units sold as
well as from increased sales compensation because of the addition of sales
personnel in existing business units. From 1997 to 1998, the increase resulted
from greater marketing and advertising costs related to a larger base of retail
outlets. During the year ended December 31, 1998, the Company incurred $2.0
million and $0.7 million in selling expenses associated with advanced messaging
and international operations, respectively.
 
     General and administrative expenses (including costs associated with
customer service, field administration and corporate headquarters) in 1996, 1997
and 1998 were $53.7 million, $66.4 million and $82.6 million, respectively. This
increase was attributable to the Company's expansion of its customer service
call centers, information systems and administrative capabilities to support the
domestic one-way subscriber base and anticipated growth of the advanced
messaging subscriber base which required additional office space, administrative
personnel and customer service representatives. On an average cost per month per
unit in service basis, general and administrative expenses were $2.89, $2.54 and
$2.68 for fiscal years 1996, 1997, and 1998, respectively. For the year ended
December 31, 1998, the Company incurred $2.1 million in general and
administrative expenses associated with advanced messaging.
 
     Depreciation and amortization in 1996, 1997 and 1998 was $21.2 million,
$29.7 million and $37.6 million, respectively. The increases resulted from the
expansion of the Company's network infrastructure including transmitter and
terminal equipment, as well as the purchase and development of computer hardware
and
 
                                       32
<PAGE>   34
 
software associated with the Company's administrative system in 1996, 1997 and
1998. As an average cost per month per unit in service, depreciation and
amortization was $1.14, $1.13 and $1.22 for the years ended December 31, 1996,
1997 and 1998, respectively. For the year ended December 31, 1998, the Company
incurred $5.8 million in depreciation and amortization associated with advanced
messaging.
 
     Interest Expense
 
     Consolidated interest expense increased from $35.0 million in 1996 to $38.5
million in 1997, and to $43.8 million in 1998. The increases in 1996 and 1997
were primarily the result of the increased interest related to the 15% Notes and
the 12 1/4% Senior Discount Notes (the "12 1/4% Notes"). The increase in 1998
was primarily the result of interest expense related to the 11 1/4% Notes and
increased interest expense related to the 15% Notes. Interest expense related to
the 12 1/4% Notes, which were retired in January 1998, was $13.3 million, $15.1
million and $1.2 million in 1996, 1997 and 1998, respectively. Interest expense
related to the 15% Notes was $18.4 million, $21.2 million and $24.7 million in
1996, 1997 and 1998, respectively. Interest expense related to the 11 1/4% Notes
was $27.0 million in 1998. Interest expense related to the vendor financing
arrangement was $0.9 million in 1997 and $0.6 million in 1998. Total interest
expense for the year ended December 31, 1998, was reduced by the capitalization
of $11.4 million of interest related to the construction of the Company's
advanced messaging network.
 
     Net Loss
 
     The Company sustained consolidated losses before extraordinary items in
1996, 1997 and 1998 of $48.6 million, $43.9 million and $41.7 million,
respectively, principally due to the cost of funding the growth rate of the
Company's subscriber base. A one-time extraordinary charge of $13.8 million was
recognized during the first quarter of 1998 related to the early retirement of
the 12 1/4% Notes. In addition, a one-time extraordinary charge of $3.8 million
was recognized during the second quarter of 1998 related to the interruption in
service experienced by the Company when the Galaxy IV satellite failed.
Including the extraordinary items, the Company's consolidated net loss for the
year ended December 31, 1998 was $59.3 million.
 
     Allocation of Debt to Divisions
 
     The Company has allocated long-term debt amongst its PageMart Paging and
PageMart PCS divisions. The methodology the Company has followed to date results
in the attribution of the proceeds of each equity and debt offering based on the
specific capital and operating requirements of each division. Positive free cash
flow generated by a division is utilized to reduce its respective debt
allocation. As of December 31, 1998, $155.9 million and $72.5 million of equity
and $125.0 million and $338.3 million of debt has been allocated to PageMart
Paging and PageMart PCS, respectively. For the twelve months ended December 31,
1998, interest expense of $18.6 million and $25.2 million was allocated to
PageMart Paging and PageMart PCS, respectively.
 
                                       33
<PAGE>   35
 
  SELECTED QUARTERLY RESULTS OF OPERATIONS
 
     The table below sets forth management's presentation of results of PageMart
Paging's operations and other data on a quarterly basis for the eight most
recent fiscal quarters. This presentation should be read in conjunction with the
Consolidated Financial Statements of the Company and the notes thereto included
elsewhere in this report and the Company's quarterly reports on Form 10-Q for
the corresponding periods below, and should not be considered in isolation or as
an alternative to results of operations that are presented in accordance with
generally accepted accounting principles ("GAAP") (in thousands, except other
data).
 
<TABLE>
<CAPTION>
                                                                   THREE MONTHS ENDED
                          -----------------------------------------------------------------------------------------------------
                          MARCH 31,     JUNE 30,    SEPT. 30,     DEC. 31,    MARCH 31,     JUNE 30,    SEPT. 30,     DEC. 31,
                             1997         1997         1997         1997         1998         1998         1998         1998
                          ----------   ----------   ----------   ----------   ----------   ----------   ----------   ----------
                                                                       (UNAUDITED)
<S>                       <C>          <C>          <C>          <C>          <C>          <C>          <C>          <C>
RECURRING REVENUE.......  $   46,475   $   50,004   $   53,593   $   56,828   $   60,872   $   63,537   $   65,205   $   65,154
Equipment revenue.......      15,183       15,867       19,142       20,513       16,289       13,164       13,546       13,702
                          ----------   ----------   ----------   ----------   ----------   ----------   ----------   ----------
                              61,658       65,871       72,735       77,341       77,161       76,701       78,751       78,856
  Cost of equipment
    sold................      18,054       20,234       24,008       23,735       20,590       15,915       16,416       15,976
                          ----------   ----------   ----------   ----------   ----------   ----------   ----------   ----------
NET REVENUES............      43,604       45,637       48,727       53,606       56,571       60,786       62,335       62,880
Technical expenses......      10,765       11,385       11,963       12,397       12,359       13,464       13,364       12,993
General and
  administrative
  expenses..............      15,763       15,814       16,957       17,911       19,728       20,524       20,862       21,452
Selling expenses........      12,572       12,189       12,115       13,969       13,476       13,716       12,907       12,519
Depreciation and
  amortization
  expense...............       6,808        7,240        7,626        7,987        8,482        9,046        9,808       10,269
                          ----------   ----------   ----------   ----------   ----------   ----------   ----------   ----------
OPERATING INCOME (LOSS):
  EBIT..................  $   (2,304)  $     (991)  $       66   $    1,342   $    2,526   $    4,036   $    5,394   $    5,647
                          ==========   ==========   ==========   ==========   ==========   ==========   ==========   ==========
EBITDA(1)...............  $    4,504   $    6,249   $    7,692   $    9,329   $   11,008   $   13,082   $   15,202   $   15,916
                          ==========   ==========   ==========   ==========   ==========   ==========   ==========   ==========
OTHER DATA:
EBIT MARGIN(2)..........        (5.3)%       (2.2)%        0.1%         2.5%         4.5%         6.6%         8.7%         9.0%
EBITDA MARGIN(3)........        10.3%        13.7%        15.8%        17.4%        19.5%        21.5%        24.4%        25.3%
Ending units in
  service...............   2,001,525    2,181,775    2,343,299    2,513,337    2,652,443    2,752,580    2,767,742    2,618,527
ARPU(4).................  $     8.04   $     7.97   $     7.90   $     7.80   $     7.86   $     7.84   $     7.87   $     8.06
Capital employed per
  unit in service(5)....  $       41   $       40   $       36   $       34   $       31   $       28   $       27   $       27
RETURN ON CAPITAL
  EMPLOYED(6)...........        22.0%        28.6%        36.5%        43.7%        53.6%        67.9%        81.4%        90.0%
</TABLE>
 
- ---------------
 
(1) EBITDA represents earnings (loss) before interest, taxes, depreciation,
    amortization, other expenses and extraordinary items. EBITDA is a financial
    measure commonly used in the paging industry. EBITDA is not derived pursuant
    to GAAP, and therefore should not be construed as an alternative to cash
    flows from operating activities (as determined in accordance with GAAP) or
    as a measure of liquidity. The calculation of EBITDA does not include the
    commitments of the Company for capital expenditures and payment of debt and
    should not be deemed to represent funds available to the Company.
 
(2) Calculated by dividing quarterly EBIT by net revenues.
 
(3) Calculated by dividing quarterly EBITDA by net revenues.
 
(4) Calculated by dividing recurring revenues for the quarter by the simple
    average number of units in service during that quarter. Stated as the
    monthly average for the quarter.
 
(5) Calculated by dividing consolidated total assets (excluding cash, advanced
    messaging services assets and international investments) minus non-interest
    bearing current liabilities, at the end of the period by units in service at
    the end of the period.
 
(6) Calculated by multiplying quarterly EBITDA by four and dividing by total
    capital employed (capital employed per unit in service multiplied by
    domestic units in service.)
 
                                       34
<PAGE>   36
 
  SUPPLEMENTARY INFORMATION
 
     The following table sets forth-supplementary financial information related
to the Company's various operations (in thousands):
 
<TABLE>
<CAPTION>
                                                     FISCAL YEAR ENDED DECEMBER 31, 1996
                                         -----------------------------------------------------------
                                         PAGEMART      PAGEMART        PAGEMART
                                          PAGING         PCS         INTERNATIONAL      CONSOLIDATED
                                         --------      --------      -------------      ------------
<S>                                      <C>           <C>           <C>                <C>
Revenues...............................  $221,592      $     --         $    --           $221,592
Operating loss.........................   (11,465)         (657)           (447)           (12,569)
Interest expense.......................    16,137        18,904              --             35,041
Interest income........................       153           987              --              1,140
Net loss...............................   (27,638)      (18,574)         (2,386)           (48,598)
EBITDA.................................     9,727          (657)           (447)             8,623
Total assets...........................   160,719       151,108           1,793            313,620
Capital expenditures...................    50,838        12,966              --             63,804
</TABLE>
 
<TABLE>
<CAPTION>
                                                     FISCAL YEAR ENDED DECEMBER 31, 1997
                                         -----------------------------------------------------------
                                         PAGEMART      PAGEMART        PAGEMART
                                          PAGING         PCS         INTERNATIONAL      CONSOLIDATED
                                         --------      --------      -------------      ------------
<S>                                      <C>           <C>           <C>                <C>
Revenues...............................  $277,605      $     --         $   173           $277,778
Operating loss.........................    (1,887)         (207)           (497)            (2,591)
Interest expense.......................    18,679        19,820              --             38,499
Interest income........................        65           436              --                501
Net loss...............................   (20,987)      (19,591)         (3,309)           (43,887)
EBITDA.................................    27,774           (16)           (497)            27,261
Total assets...........................   175,359       185,943             574            361,876
Capital expenditures...................    32,169        35,337              --             67,506
</TABLE>
 
<TABLE>
<CAPTION>
                                                     FISCAL YEAR ENDED DECEMBER 31, 1998
                                         -----------------------------------------------------------
                                         PAGEMART      PAGEMART        PAGEMART
                                          PAGING         PCS         INTERNATIONAL      CONSOLIDATED
                                         --------      --------      -------------      ------------
<S>                                      <C>           <C>           <C>                <C>
Revenues...............................  $311,469      $     96         $    87           $311,652
Operating income (loss)................    17,603       (14,506)           (647)             2,450
Interest expense.......................    18,636        25,162              --             43,798
Interest income........................        42         3,145              --              3,187
Loss before extraordinary items........      (893)      (37,284)         (3,533)           (41,710)
EBITDA.................................    55,208        (8,691)           (647)            45,870
Total assets...........................   166,766       325,118           2,171            494,055
Capital expenditures...................    40,386       128,032             128            168,546
</TABLE>
 
SEASONALITY
 
     Pager usage is slightly higher during the spring and summer months, which
is reflected in higher incremental usage fees earned by the Company. The
Company's retail sales are subject to seasonal fluctuations that affect retail
sales generally. Otherwise, the Company's results are generally not
significantly affected by seasonal factors.
 
LIQUIDITY AND CAPITAL RESOURCES
 
     The Company's operations have historically required substantial capital
investment for the development and installation of its wireless communications
network, the procurement of subscriber units and expansion into new and existing
markets. To date, these investments by the Company have been funded by the
proceeds from the issuance of common stock, preferred stock, the 12 1/4% Notes,
the 15% Notes and the 11 1/4% Notes, as well as borrowings under the Revolving
Credit Agreement and Vendor Financing Arrangement (as defined herein).
 
                                       35
<PAGE>   37
 
     Capital expenditures (excluding capitalized interest) were $63.8 million,
$67.5 million and $168.5 million for the years ended December 31, 1996, 1997 and
1998, respectively. Capital expenditures for 1996 include $44.4 million for the
Company's one-way messaging operations, $13.0 million related to the development
of advanced messaging services, and $6.4 million for the development of the
Company's new administrative system. Capital expenditures for 1997 include
approximately $35.3 million related to the development of advanced messaging
services, $22.7 million for the Company's one-way messaging operations and $9.5
million for the development of the Company's new administrative system. Capital
expenditures for the year ended 1998 include approximately $128.0 million
related to the development of its advanced messaging network, $8.8 million for
the Company's one-way messaging network, $18.4 million for computer hardware and
software, $2.3 million for corporate expansion and relocation and $8.1 million
for pagers. During December 1995, the Company committed to purchase $40 million
in network infrastructure equipment from Motorola from December 1, 1995 to
October 31, 1999. Through December 31, 1998, the Company had purchased $31.9
million of network infrastructure under this purchase commitment.
 
     The Company capitalized approximately $11.4 million of interest expense for
the narrowband PCS licenses and advanced messaging network costs for those
markets under construction during the twelve months ended December 31, 1998.
 
     The Company's net cash provided by operating activities for the years ended
December 31, 1996, 1997 and 1998 was $3.6 million, $37.2 million and $75.6
million, respectively. Net cash used in investing activities was $64.0 million,
$68.5 million and $168.7 million for the years ended December 31, 1996, 1997 and
1998, respectively and were primarily for capital expenditures. Net cash
provided by financing activities was $56.0 million, $17.0 million and $102.3
million for the years ended December 31, 1996, 1997 and 1998, respectively. Cash
provided by financing activities in 1996 resulted primarily from $70.5 million
in net proceeds received in connection with the initial public offering of the
Company's Class A Common Stock. Cash provided by financing activities in 1997
resulted from borrowings of $17.1 million under a vendor financing arrangement.
Cash provided by financing activities in 1998 resulted primarily from the
receipt of $107.8 million of net proceeds from the issuance of the 11 1/4% Notes
and the retirement of the 12 1/4% Notes.
 
     On January 28, 1998, the Company completed an offering of 11 1/4% Notes
(the "Offering") resulting in approximately $249.7 million in gross proceeds.
Simultaneously, with the closing of the Offering, the Company refinanced certain
of its outstanding indebtedness, and modified its corporate structure (the
"Refinancing"). The Refinancing consisted of the following: (i) purchasing all
of the outstanding 12 1/4% Notes ($136.5 million principal amount at maturity),
(ii) amending certain terms of the covenants and agreements in the indenture
relating to the 15% Notes; and (iii) merging PageMart, Inc. into PageMart
Wireless, Inc., with PageMart Wireless, Inc. as the surviving corporation.
 
     Approximately $130.7 million of the gross proceeds of the Offering was used
to purchase all of the outstanding 12 1/4% Notes. The proceeds remaining after
offering expenses and refinancing were approximately $107.8 million. The Company
has used the remaining proceeds to fund the construction of its advanced
messaging network and for general corporate purposes. In connection with the
Refinancing, the Company incurred an extraordinary charge of approximately $13.8
million related to the early retirement of debt.
 
     The 11 1/4% Notes, which are unsecured senior obligations of the Company,
mature in 2008 and were issued at a substantial discount from their principal
amount at maturity. The accretion of original issue discount on the 11 1/4%
Notes will cause an increase in indebtedness from December 31, 1998 to February
1, 2003 of $155.6 million. From and after August 1, 2003, interest on the
11 1/4% Notes will be payable semiannually, in cash.
 
     The 15% Notes, which are unsecured senior obligations of the Company,
mature in 2005 and were issued at a substantial discount from their principal
amount at maturity. The accretion of original issue discount on the 15% Notes
will cause an increase in indebtedness from December 31, 1998 to February 1,
2000 of $30.0 million. From and after February 1, 2000, interest on the 15%
Notes will be payable semiannually, in cash.
 
                                       36
<PAGE>   38
 
     In March 1997, PageMart entered into a vendor financing arrangement with an
infrastructure vendor (the "Vendor Financing Arrangement"), providing for the
financing of one-way or advanced messaging services infrastructure equipment
over a period of 60 months up to a maximum aggregate amount of $30 million.
Borrowings under the Vendor Financing Arrangement are secured by the equipment
purchased. The interest rate applicable to such financing is equal to the sum of
7% and the London interbank offered rate ("LIBOR") as published in The Wall
Street Journal for three-month maturities or the sum of 4.25% and the U.S. prime
rate of interest as published in The Wall Street Journal. During the first
quarter ended March 31, 1998, the Company repaid the total amount outstanding of
$21.2 million on the Vendor Financing Arrangement and modified the agreement to
provide $30 million of available financing, in aggregate, during the period from
September 1, 1998 through December 31, 2000. The Company has borrowed $9.8
million under the Vendor Financing Arrangement as of December 31, 1998. The
weighted average interest rate in effect on December 31, 1998 with respect to
the Vendor Financing Arrangement was 12.56%.
 
     In May 1995, the Company entered into a four year Revolving Credit
Agreement with BT Commercial Corporation, as Agent, and Bankers Trust Company,
as Issuing Bank, which provided for a $50 million revolving line of credit (the
"Revolving Credit Agreement"). As of December 31, 1998 there were no loans
outstanding under the Revolving Credit Agreement.
 
     In March 1999, the Company entered into a four year credit agreement with
Bankers Trust Company and Morgan Stanley Senior Funding, Inc. which provides for
a $100 million credit facility (the "Credit Facility"). The Credit Facility
replaces the Revolving Credit Agreement, which was simultaneously terminated.
The Credit Facility provides for $75 million of multi-draw term loans (the "Term
Loans") and $25 million of revolving loans (the "Revolving Loans"). As of March
23, 1999, $50 million was immediately available to the Company, $10 million of
which was Revolving Loans. On March 24, 1999, the Company borrowed $25 million
in Term Loans pursuant to the terms of the Credit Facility. Approximately $12
million of the initial borrowing was used to repay amounts outstanding under the
Vendor Financing Arrangement and to fund the fees and expenses of the Credit
Facility.
 
     The Credit Facility bears interest at the U.S. prime rate plus 2.75% or at
LIBOR plus 3.75%. Further availability of the Credit Facility beyond the initial
$50 million is based on the Company's achievement of certain minimum targets for
advanced messaging subscriber units in service.
 
     As of December 31, 1998, the Company had $9.7 million outstanding under the
Vendor Financing Arrangement and its indebtedness under the 11 1/4% Notes was
$276.4 million and its indebtedness under the 15% Notes was $177.3 million.
 
     In June 1996, the Company sold an aggregate of 6.0 million shares of Class
A Common Stock in an initial public offering at a price to the public of $13 per
share. The Company received net proceeds of approximately $70.5 million of which
approximately $12.9 million was used to retire vendor debt and $11.9 million was
used to repay outstanding loans under the Company's Revolving Credit Agreement.
 
     The indenture under which the 15% Notes were issued, the indenture under
which the 11 1/4% Notes were issued, the Vendor Financing Arrangement and the
Credit Facility contain certain restrictive covenants that, among other things,
limit the ability of the Company to incur indebtedness, pay dividends,
repurchase capital stock, engage in transactions with stockholders and
affiliates, create liens, sell assets, enter into leases and engage in mergers
and consolidations, and the Credit Facility requires the Company to maintain
certain operating and financial performance measures and limits the ability of
the Company to make capital expenditures.
 
     On November 15, 1995, the Company purchased through PageMart International,
Inc., 200,000 voting shares of common stock of PageMart Canada, which represents
20% of the ownership of PageMart Canada. PageMart International, Inc. also owns
33% of the voting common stock of the holding company parent of PageMart Canada
("Canada Holding"), which owns the remaining 80% of the voting common stock of
PageMart Canada. The Company's initial investment in Canada Holding and PageMart
Canada totaled approximately $3.7 million. The Company expects to make further
investments in Canada to upgrade the network to advanced messaging and fund
working capital requirements.
 
                                       37
<PAGE>   39
 
     During the first quarter of 1998, the Company began the implementation of
its advanced messaging services network. The Company has incurred significant
capital expenditures and expects to incur significant operating losses and
additional capital expenditures associated with the implementation and
deployment of its advanced messaging services. The Company has incurred capital
expenditures of approximately $128.0 million in 1998 to construct and deploy its
advanced messaging network. In addition, the Company funded negative cash flow
of $8.7 million to support operations and marketing in 1998. On December 15,
1998, the Company launched nationwide advanced messaging services covering
approximately 70% of the U.S. population. The Company anticipates that the
advanced messaging operations will require approximately $40 million of
additional capital expenditures in 1999 to complete the addition of narrowband
PCS capabilities, expand its network geographically and make other enhancements.
In addition, the Company expects the advanced messaging operations to require
approximately $30 million to fund operations and marketing in 1999 as the
Company's advanced messaging customer base grows.
 
     As of December 31, 1998, the Company had approximately $18.5 million in
cash, cash equivalents and short-term investments. On March 24, 1999, the
Company borrowed $25 million in Term Loans pursuant to the terms of the Credit
Facility. On March 29, 1999, the Company repaid all amounts outstanding under
the Vendor Financing Arrangement. At March 29, 1999 the borrowings available
under the Vendor Financing Arrangement were approximately $30 million. As of
March 29, 1999, the borrowings available under the Credit Facility were $25
million. Additional availability under the Credit Facility is based on certain
minimum targets on advanced messaging subscriber units in service. The Company
anticipates that its cash balance and amounts available under the Credit
Facility and Vendor Financing Arrangement, combined with anticipated excess cash
flows from the Company's PageMart Paging division, will be sufficient to fund
the Company's consolidated operations and capital expenditures through 1999.
 
     From time to time, the Company will selectively consider potential
opportunities to make acquisitions intended to enhance its strategic position in
the wireless messaging industry. If the Company were to pursue any such
acquisitions, the Company would expect to obtain any necessary financing through
additional borrowings and/or equity financing and would need to successfully
integrate the acquired business into the existing operations.
 
     Future revenues, costs, product mix and new product acceptance are all
influenced by a number of factors which are inherently uncertain and difficult
to predict. Therefore, no assurance can be given that financing for such
investments will be available. No assurance can be given that the Company's
strategy will be implemented as currently planned or that the Company's
operations will generate positive cash flows.
 
YEAR 2000 READINESS DISCLOSURE
 
     In 1997, the Company began an evaluation of its computer systems and
network infrastructure for Year 2000 readiness. The Year 2000 issue stems from
the use of two-digit dates in computer programs. Programs that use the two-digit
dates may recognize a date using "00" as the year 1900 rather than the year
2000. This could result in system malfunctions or failures causing disruptions
in operations. The Company is currently in the process of assessing the impact
of the Year 2000 on its operations and is upgrading, modifying or replacing
software or equipment where necessary. To support the Company's assessment,
executive management has appointed a cross-functional steering committee to
address potential Year 2000 problems and to formulate and guide the Company's
Year 2000 enterprise readiness plans.
 
     The Company has divided its Year 2000 efforts into two primary areas: its
administrative and network systems, and third party suppliers and vendors.
 
     The Company's administrative and network systems consist of software and
hardware systems that are a combination of internally developed software and
third party software and hardware. The Company's approach is to:
 
     - Create an inventory of items that must be assessed and prioritize the
       items by how critical they are to the operations of the Company;
 
     - Assess their readiness through testing;
 
                                       38
<PAGE>   40
 
     - Plan and implement corrective actions;
 
     - Develop contingency plans.
 
     The Company intends to include third party software and hardware in this
assessment process to the extent practicable, even though it may have obtained
Year 2000 readiness information from the vendor or supplier of the software or
hardware. As of the date of this report, the Company has materially completed
the inventory and prioritization of items. Certain administrative software that
was not Year 2000 ready had to be upgraded before extensive testing could begin.
The upgraded software was installed in October 1998. Testing plans have been
completed and testing is proceeding. Testing of the Company's information
systems is scheduled to be substantially completed in April 1999. Certain
network software is not Year 2000 ready, but the vendor of the software has
informed the Company that a Year 2000 ready version will be released in the
second quarter of 1999. Testing of the Company's network systems is scheduled to
be substantially completed by the end of the second quarter of 1999. After
remediation of any problems discovered during testing, the Company expects that
critical hardware and software systems that are within its ability to test will
be Year 2000 ready in mid-1999. The Company then plans to conduct
enterprise-wide, end-to-end testing of its systems during the third quarter of
1999. Although, the Company's contingency plans are not fully developed, the
Company expects to develop contingency plans to mitigate, to the extent
possible, the effects of any significant Year 2000 problem that is not
corrected.
 
     The Company uses hardware, software and services supplied by third party
vendors in most of its operations. The Company's approach has been to:
 
     - Create a list of suppliers and vendors;
 
     - Communicate with each supplier and vendor to try to obtain information
       about the Year 2000 readiness of its products and services;
 
     - Work cooperatively with vendors and suppliers whose products or services
       are not Year 2000 ready to resolve the problems.
 
     Some third party products can be tested by the Company for Year 2000
readiness and will be included in the assessment described above. Other third
party products and services cannot be independently tested by the Company, some
of which are critical to the operations of the Company, such as satellite and
other third party telecommunications services and electric utility services.
Although the Company has received or expects to receive Year 2000 readiness
certification or information regarding most of these third party products and
services, the Company can make no representation that all third party products
and services will be Year 2000 ready.
 
     The Company believes that its Year 2000 readiness effort will significantly
reduce the level of uncertainty about the Company's Year 2000 readiness.
Throughout the remainder of 1999, the Company will continue to assess its Year
2000 readiness. However, due to the general uncertainty inherent in the Year
2000 problem, resulting in part from the uncertainty of the Year 2000 readiness
of third party suppliers and vendors, the Company cannot currently determine
whether all Year 2000 problems material to its operations will be corrected. A
failure to correct a material Year 2000 problem could result in the interruption
or failure of certain normal business operations, such as the Company's paging
and messaging services, customer activations and services, or customer invoicing
and collections. Such failures, if prolonged, could materially and adversely
affect the Company's results of operations, liquidity or financial condition.
 
     The Company's program to upgrade, modify or replace software and hardware
has two objectives, to increase functionality and efficiency and to make the
Company Year 2000 ready. In 1998, the Company spent approximately $18.4 million
to upgrade, modify or replace hardware and software, most of which relates to
the increased functionality and efficiency. An ancillary benefit of these
upgrades was Year 2000 readiness, the cost of which was not significant. The
Company has not fully determined the final aggregate costs of its Year 2000
readiness activities.
 
                                       39
<PAGE>   41
 
ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA
 
     The financial statements and supplementary data are included in this report
beginning on Page F-1.
 
ITEM 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND
FINANCIAL DISCLOSURE
 
     None.
 
                                    PART III
 
ITEM 10. DIRECTORS AND EXECUTIVE OFFICERS OF REGISTRANT
 
     The information required by this item is contained in this report under the
caption "Item 1. Business -- Executive Officers and Directors of the
Registrant."
 
ITEM 11. EXECUTIVE COMPENSATION
 
     See "Executive Compensation" in the Company's definitive proxy statement
related to the Company's annual meeting of stockholders to be held on May 12,
1999, which is incorporated herein by reference.
 
ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT
 
     See "Security Ownership of Certain Beneficial Owners and Management" in the
Company's definitive proxy statement related to the Company's annual meeting of
stockholders to be held on May 12, 1999, which is incorporated herein by
reference.
 
ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS
 
     See "Certain Relationships and Related Transactions" in the Company's
definitive proxy statement related to the Company's annual meeting of
stockholders to be held on May 12, 1999, which is incorporated herein by
reference.
 
                                    PART IV
 
ITEM 14. EXHIBITS, FINANCIAL STATEMENT SCHEDULES, AND REPORTS ON FORM 8-K
 
     (a) The following documents are filed as part of this 10-K:
 
          (1) Financial Statements. See Index to Consolidated Financial
     Statements and Financial Statement Schedule on Page F-1 hereof.
 
          (2) Financial Statement Schedules. See Index to Consolidated Financial
     Statements and Financial State Schedule on Page F-1 hereof.
 
          (3) Exhibits Required by Item 601 of Regulation S-K. See Exhibit Index
     on Page E-1 hereof.
 
     (b) Reports on Form 8-K
 
        The following current report on Form 8-K was filed by PageMart Wireless,
        Inc. during the quarter ended December 31, 1998:
 
        Current Report on Form 8-K dated December 11, 1998 disclosing under Item
        5 "Other Events" the Company's expected financial results for fourth
        quarter 1998.
 
                                       40
<PAGE>   42
 
                                   SIGNATURES
 
     Pursuant to the requirements of Section 13 or 15(d) of the Securities
Exchange Act of 1934, the registrant has duly caused this report to be signed on
its behalf by the undersigned, thereunto duly authorized.
 
Date: March 30, 1999                        PAGEMART WIRELESS, INC.
                                            (Registrant)
 
                                            By:     /s/ JOHN D. BELETIC
                                              ----------------------------------
                                                       John D. Beletic
                                                 Chairman and Chief Executive
                                                            Officer
 
     Pursuant to the requirements of the Securities Exchange Act of 1934, this
report has been signed below by the following persons on behalf of the
registrant and in the capacities and on the dates indicated.
 
<TABLE>
<CAPTION>
                      SIGNATURE                                     TITLE                    DATE
                      ---------                                     -----                    ----
<C>                                                     <S>                             <C>
 
                 /s/ JOHN D. BELETIC                    Chairman and Chief Executive    March 30, 1999
- -----------------------------------------------------   Officer (Principal Executive
                   John D. Beletic                      Officer)
 
                  /s/ G. CLAY MYERS                     Vice President, Finance,        March 30, 1999
- -----------------------------------------------------   Chief Financial Officer and
                    G. Clay Myers                       Treasurer (Principal
                                                        Financial and Accounting
                                                        Officer)
 
                /s/ LEIGH J. ABRAMSON                   Director                        March 30, 1999
- -----------------------------------------------------
                  Leigh J. Abramson
 
                /s/ GUY L. DE CHAZAL                    Director                        March 30, 1999
- -----------------------------------------------------
                  Guy L. De Chazal
 
                 /s/ STEVEN B. DODGE                    Director                        March 30, 1999
- -----------------------------------------------------
                   Steven B. Dodge
 
               /s/ MICHAEL C. HOFFMAN                   Director                        March 30, 1999
- -----------------------------------------------------
                 Michael C. Hoffman
 
                /s/ ARTHUR PATTERSON                    Director                        March 30, 1999
- -----------------------------------------------------
                  Arthur Patterson
 
            /s/ ALEJANDRO PEREZ ELIZONDO                Director                        March 30, 1999
- -----------------------------------------------------
              Alejandro Perez Elizondo
 
                /s/ PAMELA D.A. REEVE                   Director                        March 30, 1999
- -----------------------------------------------------
                  Pamela D.A. Reeve
</TABLE>
 
                                       41
<PAGE>   43
 
                    PAGEMART WIRELESS, INC. AND SUBSIDIARIES
 
                   INDEX TO CONSOLIDATED FINANCIAL STATEMENTS
 
<TABLE>
<CAPTION>
                                                              PAGE
                                                              ----
<S>                                                           <C>
Report of Independent Public Accountants....................  F-2
 
Consolidated Balance Sheets as of December 31, 1997 and
  1998......................................................  F-3
 
Consolidated Statements of Operations for the Years Ended
  December 31, 1996, 1997 and 1998..........................  F-4
 
Consolidated Statements of Stockholders' (Deficit) Equity
  for the Years Ended December 31, 1996, 1997 and 1998......  F-5
 
Consolidated Statements of Cash Flows for the Years Ended
  December 31, 1996, 1997 and 1998..........................  F-6
 
Notes to Consolidated Financial Statements..................  F-7
</TABLE>
 
                                       F-1
<PAGE>   44
 
                    REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS
 
To the Board of Directors and Stockholders of PageMart Wireless, Inc.:
 
     We have audited the accompanying consolidated balance sheets of PageMart
Wireless, Inc. (a Delaware corporation) and subsidiaries as of December 31, 1997
and 1998, and the related consolidated statements of operations, stockholders'
(deficit) equity and cash flows for each of the three years in the period ended
December 31, 1998. These financial statements are the responsibility of the
Company's management. Our responsibility is to express an opinion on these
financial statements based on our audits.
 
     We conducted our audits in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements. An audit also includes
assessing the accounting principles used and significant estimates made by
management, as well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our opinion.
 
     In our opinion, the financial statements referred to above present fairly,
in all material respects, the financial position of PageMart Wireless, Inc. and
subsidiaries as of December 31, 1997 and 1998, and the results of its operations
and its cash flows for each of the three years in the period ended December 31,
1998, in conformity with generally accepted accounting principles.
 
                                            /s/ ARTHUR ANDERSEN LLP
 
Dallas, Texas,
February 3, 1999
(except with respect to the matter
discussed in Note 18, as to
which the date is March 26, 1999)
 
                                       F-2
<PAGE>   45
 
                    PAGEMART WIRELESS, INC. AND SUBSIDIARIES
 
                          CONSOLIDATED BALANCE SHEETS
                           DECEMBER 31, 1997 AND 1998
               (IN THOUSANDS, EXCEPT SHARE AND PER SHARE AMOUNTS)
 
<TABLE>
<CAPTION>
                                                                   DECEMBER 31,
                                                              ----------------------
                                                                1997         1998
                                                              ---------    ---------
<S>                                                           <C>          <C>
ASSETS
CURRENT ASSETS:
  Cash and cash equivalents.................................  $   8,337    $  17,476
  Short-term investments....................................         --        1,000
  Accounts receivable (net of allowance for doubtful
     accounts of $7,170 and $2,580 at December 31, 1997 and
     1998, respectively)....................................     61,394       38,304
  Inventories...............................................      5,359        6,747
  Other current assets......................................      9,043       11,010
                                                              ---------    ---------
          Total current assets..............................     84,133       74,537
PROPERTY AND EQUIPMENT (net of accumulated depreciation of
  $76,388 and $116,326 at December 31, 1997 and 1998,
  respectively).............................................    136,727      274,179
NARROWBAND LICENSES (net of accumulated amortization of $510
  at December 31, 1998).....................................    133,065      132,555
OTHER ASSETS (net of accumulated amortization of $6,077 and
  $5,391 at December 31, 1997 and 1998, respectively).......      7,951       12,784
                                                              ---------    ---------
          Total assets......................................  $ 361,876    $ 494,055
                                                              =========    =========
LIABILITIES AND STOCKHOLDERS' (DEFICIT) EQUITY
CURRENT LIABILITIES:
  Accounts payable..........................................  $  28,009    $  38,703
  Deferred revenue..........................................     53,469       57,512
  Current maturities of long-term debt......................      2,755        1,238
  Other current liabilities.................................     20,740       23,297
                                                              ---------    ---------
          Total current liabilities.........................    104,973      120,750
LONG-TERM DEBT..............................................    289,344      462,079
OTHER LONG-TERM LIABILITIES.................................         --        1,248
COMMITMENTS AND CONTINGENCIES (SEE NOTE 8)
STOCKHOLDERS' (DEFICIT) EQUITY:
  Common stock, $.0001 par value per share, 75,000,000
     shares authorized:
     Class A Convertible Common Stock, 34,115,157 shares
      issued and outstanding at December 31, 1997;
      34,536,512 shares issued and outstanding at December
      31, 1998..............................................          3            3
     Class B Convertible Non-Voting Common Stock, 3,809,363
      shares issued and outstanding at December 31, 1997 and
      December 31, 1998.....................................          1            1
     Class C Convertible Non-Voting Common Stock, 1,428,472
      shares issued and outstanding at December 31, 1997 and
      December 31, 1998.....................................         --           --
     Class D Convertible Non-Voting Common Stock, 679,945
      shares issued and outstanding at December 31, 1997;
      623,945 shares issued and outstanding at December 31,
      1998..................................................         --           --
  Additional paid-in capital................................    226,622      228,438
  Accumulated deficit.......................................   (258,575)    (317,891)
  Stock subscriptions receivable............................       (492)        (573)
                                                              ---------    ---------
          Total stockholders' (deficit) equity..............    (32,441)     (90,022)
                                                              ---------    ---------
          Total liabilities and stockholders' (deficit)
            equity..........................................  $ 361,876    $ 494,055
                                                              =========    =========
</TABLE>
 
  The accompanying notes are an integral part of these consolidated financial
                                  statements.
 
                                       F-3
<PAGE>   46
 
                    PAGEMART WIRELESS, INC. AND SUBSIDIARIES
 
                     CONSOLIDATED STATEMENTS OF OPERATIONS
                    (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
 
<TABLE>
<CAPTION>
                                                                 YEARS ENDED DECEMBER 31,
                                                              ------------------------------
                                                                1996       1997       1998
                                                              --------   --------   --------
<S>                                                           <C>        <C>        <C>
REVENUES:
  Recurring revenue.........................................  $153,041   $206,907   $254,814
  Equipment revenue.........................................    68,551     70,871     56,838
                                                              --------   --------   --------
          Total revenues....................................   221,592    277,778    311,652
COST OF EQUIPMENT SOLD......................................    78,896     86,175     69,150
                                                              --------   --------   --------
                                                               142,696    191,603    242,502
OPERATING EXPENSES:
  Technical.................................................    37,021     46,513     56,584
  Selling...................................................    43,046     51,371     55,305
  General and administrative................................    54,006     66,458     84,743
  Depreciation and amortization.............................    21,192     29,852     43,420
                                                              --------   --------   --------
          Total operating expenses..........................   155,265    194,194    240,052
                                                              --------   --------   --------
          Operating (loss) income...........................   (12,569)    (2,591)     2,450
OTHER (INCOME) EXPENSE:
  Interest expense..........................................    35,041     38,499     43,798
  Interest income...........................................    (1,140)      (501)    (3,187)
  Other.....................................................     2,128      3,298      3,549
                                                              --------   --------   --------
          Total other (income) expense......................    36,029     41,296     44,160
                                                              --------   --------   --------
LOSS BEFORE EXTRAORDINARY ITEMS:............................   (48,598)   (43,887)   (41,710)
                                                              ========   ========   ========
EXTRAORDINARY ITEMS:
  Early retirement of debt..................................        --         --    (13,808)
  Satellite failure.........................................        --         --     (3,798)
                                                              --------   --------   --------
NET LOSS....................................................  $(48,598)  $(43,887)  $(59,316)
                                                              ========   ========   ========
NET LOSS PER SHARE (Basic and Diluted)
LOSS BEFORE EXTRAORDINARY ITEMS.............................  $  (1.30)  $  (1.10)  $  (1.03)
EXTRAORDINARY ITEMS.........................................        --         --      (0.44)
                                                              --------   --------   --------
NET LOSS....................................................  $  (1.30)  $  (1.10)  $  (1.47)
                                                              ========   ========   ========
WEIGHTED AVERAGE NUMBER OF SHARES OUTSTANDING (Basic and
  Diluted)..................................................    37,462     39,922     40,246
</TABLE>
 
  The accompanying notes are an integral part of these consolidated financial
                                  statements.
 
                                       F-4
<PAGE>   47
 
                    PAGEMART WIRELESS, INC. AND SUBSIDIARIES
 
           CONSOLIDATED STATEMENTS OF STOCKHOLDERS' (DEFICIT) EQUITY
                      (IN THOUSANDS, EXCEPT SHARE AMOUNTS)
 
<TABLE>
<CAPTION>
                                                          COMMON STOCK
                                                      --------------------    ADDITIONAL                     STOCK
                                                      NUMBER OF                PAID-IN     ACCUMULATED   SUBSCRIPTIONS
                                                        SHARES      AMOUNT     CAPITAL       DEFICIT      RECEIVABLE      TOTAL
                                                      ----------    ------    ----------   -----------   -------------   --------
<S>                                                   <C>           <C>       <C>          <C>           <C>             <C>
BALANCE, December 31, 1995..........................  33,710,053     $ 3       $154,601     $(166,090)       $(557)      $(12,043)
  Common stock issued under the stock option/stock
    issuance plan/employee stock purchase plan......     94,879       --            561            --           --            561
  Repayment of stock subscriptions receivable.......         --       --             --            --           10             10
  Common stock issued in initial public offering....  6,000,000        1         70,499            --           --         70,500
  Net loss..........................................         --       --             --       (48,598)          --        (48,598)
                                                      ----------     ---       --------     ---------        -----       --------
BALANCE, December 31, 1996..........................  39,804,932       4        225,661      (214,688)        (547)        10,430
  Common stock issued under the stock option/stock
    issuance plan/employee stock purchase plan......    179,705       --            804            --          (45)           759
  Exercise of common stock warrants.................     48,300       --            157            --           --            157
  Repayment of stock subscriptions receivable.......         --       --             --            --          100            100
  Net loss..........................................         --       --             --       (43,887)          --        (43,887)
                                                      ----------     ---       --------     ---------        -----       --------
BALANCE, December 31, 1997..........................  40,032,937       4        226,622      (258,575)        (492)       (32,441)
  Common stock issued under the stock option/stock
    issuance plan/employee stock purchase plan......    364,205       --          1,813            --         (139)         1,674
  Exercise of common stock warrants.................      1,150       --              3            --           --              3
  Repayment of stock subscriptions receivable.......         --       --             --            --           58             58
  Net loss..........................................         --       --             --       (59,316)          --        (59,316)
                                                      ----------     ---       --------     ---------        -----       --------
BALANCE, December 31, 1998..........................  40,398,292     $ 4       $228,438     $(317,891)       $(573)      $(90,022)
                                                      ==========     ===       ========     =========        =====       ========
</TABLE>
 
  The accompanying notes are an integral part of these consolidated financial
                                  statements.
 
                                       F-5
<PAGE>   48
 
                    PAGEMART WIRELESS, INC. AND SUBSIDIARIES
 
                     CONSOLIDATED STATEMENTS OF CASH FLOWS
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                                 YEARS ENDED DECEMBER 31,
                                                              -------------------------------
                                                                1996       1997       1998
                                                              --------   --------   ---------
<S>                                                           <C>        <C>        <C>
CASH FLOWS FROM OPERATING ACTIVITIES:
  Net loss..................................................  $(48,598)  $(43,887)  $ (59,316)
  Adjustments to reconcile net loss to net cash provided by
    operating activities:
    Extraordinary items.....................................        --         --      17,606
    Depreciation and amortization...........................    21,192     29,852      43,420
    Provision for bad debts.................................     6,986     10,910      11,130
    Accretion of discount on Senior Discount Notes..........    30,871     35,431      40,284
    Amortization of deferred debt issuance costs............     2,083        846       2,489
    Changes in certain assets and liabilities:
      (Increase) decrease in accounts receivable............   (18,929)   (38,858)     11,960
      (Increase) decrease in inventories....................      (523)     6,343      (1,388)
      Decrease (increase) in other current assets...........        59     (6,222)     (1,967)
      (Increase) decrease in other assets...................    (1,052)     3,105        (543)
      Increase in accounts payable..........................        92      4,823      10,694
      Increase in deferred revenue..........................     5,638     26,422       4,043
      Increase (decrease) in other current liabilities......     5,744      8,470      (2,820)
                                                              --------   --------   ---------
        Net cash provided by operating activities...........     3,563     37,235      75,592
                                                              --------   --------   ---------
CASH FLOWS FROM INVESTING ACTIVITIES:
  Purchases of property and equipment.......................   (63,804)   (67,506)   (168,546)
  Purchase of short-term investments........................        --         --      (1,000)
  Release of restricted cash................................       500         --          --
  Other.....................................................      (648)      (992)        801
                                                              --------   --------   ---------
        Net cash used in investing activities...............   (63,952)   (68,498)   (168,745)
                                                              --------   --------   ---------
CASH FLOWS FROM FINANCING ACTIVITIES:
  Proceeds from issuance of common stock....................    70,500         --          --
  Proceeds from issuance of common stock under the stock
    option/stock issuance plan/employee stock purchase
    plan....................................................       561        759       1,674
  Retirement of 12 1/4% Senior Discount Notes...............        --         --    (130,689)
  Proceeds from issuance of 11 1/4% Senior Subordinated
    Discount Notes..........................................        --         --     249,700
  Offering Costs related to issuance of 11 1/4% Senior
    Subordinated Discount Notes and retirement of 12 1/4%
    Senior Discount Notes...................................        --         --     (12,158)
  Borrowings under Revolving Credit Agreement...............    31,100      3,000          --
  Payments under Revolving Credit Agreement.................   (31,100)    (3,000)         --
  Borrowings from vendor financing arrangements.............        --     17,053      15,097
  Payments on vendor financing arrangements.................   (15,027)    (1,072)    (21,393)
  Other.....................................................       (15)       257          61
                                                              --------   --------   ---------
        Net cash provided by financing activities...........    56,019     16,997     102,292
                                                              --------   --------   ---------
NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS........    (4,370)   (14,266)      9,139
CASH AND CASH EQUIVALENTS, beginning of period..............    26,973     22,603       8,337
                                                              --------   --------   ---------
CASH AND CASH EQUIVALENTS, end of period....................  $ 22,603   $  8,337   $  17,476
                                                              ========   ========   =========
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
  Cash paid during the period for:
    Interest................................................  $  1,231   $  1,306   $     969
    Income taxes............................................  $     --   $     --   $      --
</TABLE>
 
  The accompanying notes are an integral part of these consolidated financial
                                  statements.
 
                                       F-6
<PAGE>   49
 
                    PAGEMART WIRELESS, INC. AND SUBSIDIARIES
 
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
 
1. GENERAL
 
     PageMart, Inc. ("PageMart") was incorporated as a Delaware corporation on
May 8, 1989, to provide wireless messaging products and services. In January
1995, PageMart effected a corporate reorganization pursuant to which PageMart
Nationwide, Inc., a Delaware corporation, became the holding company parent of
PageMart. In December 1995, the corporate name was changed from PageMart
Nationwide, Inc. to PageMart Wireless, Inc. ("Wireless"). On January 28, 1998,
PageMart was merged into Wireless with Wireless as the surviving corporation.
Wireless and its subsidiaries are referred to herein as the "Company." The
consolidated financial statements of the Company include the accounts of
PageMart PCS, Inc., PageMart II, Inc., PageMart Operations, Inc., PageMart
International, Inc. and certain other direct and indirect subsidiaries of
Wireless. Each of these companies is a wholly-owned subsidiary of Wireless.
PageMart PCS, Inc. holds certain narrowband personal communications services
licenses. PageMart II, Inc. and PageMart Operations, Inc. hold certain Federal
Communications Commission ("FCC") licenses. PageMart International, Inc. holds
certain investments in an international operation in Canada. Other than these
licenses and international investments, the subsidiaries of Wireless have no
significant assets or liabilities.
 
     The Company has incurred substantial losses from consolidated operations
since inception and is highly leveraged. Although operating income was reported
in 1998, management expects to continue to incur consolidated operating losses
in 1999. In the third quarter of 1997, the Company began generating operating
profits in its one-way business and management expects this trend to continue
into 1999. The Company's consolidated operating losses will be driven by the
Company's investments in new advanced messaging capabilities and the associated
investment in the growth of its subscriber base for such services. The Company's
business plan calls for substantial growth in its subscriber base in order for
the Company to achieve overall operating profitability. There can be no
assurance that the Company will meet its business plan or achieve operating
profitability. If the Company cannot achieve operating profitability, it may not
be able to make the required payments on existing or future obligations or
realize its cost in developing the advanced messaging network.
 
2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
 
CONSOLIDATION
 
     The accompanying consolidated financial statements include the accounts of
Wireless and its wholly-owned subsidiaries. All significant intercompany
balances and transactions have been eliminated.
 
CASH AND CASH EQUIVALENTS
 
     The Company includes as cash and cash equivalents cash on hand, cash in
banks and highly liquid investments with original maturities of three months or
less.
 
SHORT-TERM INVESTMENTS
 
     The Company includes as short-term investments, investments with maturities
greater than three months and less than one year.
 
INVENTORIES
 
     Inventories consist of pagers held for resale and are stated at the lower
of cost or market. Cost is determined by using the average cost method, which
approximates the first-in, first-out method. The Company purchases a majority of
its pagers from Motorola, Inc.
 
                                       F-7
<PAGE>   50
 
PROPERTY AND EQUIPMENT
 
     Property and equipment are stated at cost and depreciated using the
straight-line method for financial reporting purposes and accelerated methods
for tax reporting purposes over estimated useful lives ranging from three to
seven years. Depreciation expense totaled approximately $19,688,000, $28,690,000
and $42,541,000 for the years ended December 31, 1996, 1997 and 1998,
respectively. The Company purchases a majority of its network equipment from
Motorola, Inc. and Glenayre Technologies, Inc. Maintenance and repair costs are
charged to expense as incurred.
 
     Property and equipment consisted of the following (in thousands):
 
<TABLE>
<CAPTION>
                                                                 DECEMBER 31,
                                                              -------------------
                                                                1997       1998
                                                              --------   --------
<S>                                                           <C>        <C>
Network equipment...........................................  $157,543   $306,503
Computer equipment..........................................    41,023     65,273
Furniture and equipment.....................................    14,549     18,729
                                                              --------   --------
                                                               213,115    390,505
Less: Accumulated depreciation..............................   (76,388)  (116,326)
                                                              --------   --------
                                                              $136,727   $274,179
                                                              ========   ========
</TABLE>
 
REVENUE RECOGNITION
 
     The Company recognizes equipment revenue immediately upon the shipment of
pagers adjusted by allowances for normal returns. Recurring revenue, including
revenue from airtime charges and fees for other services such as voice mail,
customized coverage options and toll-free numbers are recognized in the month in
which the service is provided. All expenses related to the sale of equipment are
recognized at the time of sale. Deferred revenue represents advance billings for
services not yet performed. Such revenue is deferred and recognized in the month
in which the service is provided. Patent licensing revenues are recognized on a
straight-line basis over the term of the related agreement (see Note 8). Patent
licensing revenues of $4,596,000 are included in recurring revenues in fiscal
years 1996, 1997 and 1998.
 
ADVERTISING EXPENSES
 
     Advertising expenses are expensed as incurred.
 
EARNINGS PER SHARE
 
     Net loss per share amounts as reflected on the statements of operations are
based upon the weighted average number of common shares outstanding.
 
     In February 1997, the Financial Accounting Standards Board ("FASB") issued
Statement No. 128, "Earnings per Share," ("SFAS 128"). The Company adopted SFAS
128 for the fiscal year ending December 31, 1997. SFAS 128 replaces the primary
earnings per share calculation with a basic earnings per share calculation and
modifies the calculation of diluted earnings per share. Adoption of SFAS 128 did
not affect the calculation of earnings per share for the Company.
 
     Under the provisions of SFAS 128, dilutive securities are excluded from the
calculation of earnings per share when there is a net loss because their
inclusion would be anti-dilutive. The securities listed below were not included
in the computation of diluted loss per share, since the effect from the
conversion would be anti-dilutive.
 
<TABLE>
<CAPTION>
                                          DECEMBER 31,   DECEMBER 31,   DECEMBER 31,
                                              1996           1997           1998
                                          ------------   ------------   ------------
<S>                                       <C>            <C>            <C>
  Stock Options.........................   3,498,292      4,300,496      5,700,971
  Warrants..............................     834,648        786,348        785,198
                                           ---------      ---------      ---------
                                           4,332,940      5,086,844      6,486,169
                                           =========      =========      =========
</TABLE>
 
                                       F-8
<PAGE>   51
 
USE OF ESTIMATES
 
     The preparation of financial statements in conformity with generally
accepted accounting principles requires management to make estimates and
assumptions that affect the reported amounts of assets and liabilities and
disclosure of contingent assets and liabilities at the date of the financial
statements and the reported amounts of revenues and expenses during the
reporting period. Actual results could differ from those estimates.
 
RECLASSIFICATIONS
 
     Certain amounts in the prior years' consolidated financial statements have
been reclassified to conform with the current year presentation.
 
ACCOUNTING FOR LONG-LIVED ASSETS
 
     In March 1995, the FASB issued Statement No. 121, "Accounting for the
Impairment of Long-Lived Assets and for Long-Lived Assets to Be Disposed Of"
("SFAS 121"). The Company adopted SFAS 121 for the fiscal year ending December
31, 1996. SFAS 121 establishes accounting standards for the impairment of
long-lived assets, certain identifiable intangibles, and goodwill related to
those assets to be held and used and for long-lived assets and certain
identifiable intangibles to be disposed of. SFAS 121 requires that those assets
to be held and used be reviewed for impairment whenever events or changes in
circumstances indicate that the carrying amount of an asset may not be
recoverable through future cash flows. SFAS 121 requires that those assets to be
disposed of be reported at the lower of the carrying amount or the fair value
less cost to sell. Adoption of SFAS 121 did not affect the Company's results of
operations for the years ended December 31, 1996, 1997 and 1998. The Company
will continue to evaluate the effect of SFAS 121 in subsequent periods.
 
3. NARROWBAND PERSONAL COMMUNICATIONS SERVICES LICENSES
 
     During July and December 1994, the Company participated in auctions of
Narrowband Personal Communications Services ("NPCS") licenses conducted by the
FCC. As a result of the auctions, the Company was awarded two nationwide NPCS
licenses for a total purchase price of approximately $133 million. Amortization
of the NPCS licenses commenced in 1998 for those markets placed in service. The
NPCS licenses are amortized over a period of 40 years. Amortization expense for
the period ended December 31, 1998 was $510,000.
 
4. CAPITALIZED INTEREST
 
     In accordance with statement of Financial Accounting Standards No.
34 -- Capitalization of Interest Cost, the Company capitalizes interest on
certain qualifying assets during the construction period. Interest costs
attributable to the construction of the Company's advanced messaging network of
$11.4 million was capitalized for the period ended December 31, 1998. The
Company did not capitalize any interest costs for the period ended December 31,
1997.
 
5. INVESTMENT IN UNCONSOLIDATED SUBSIDIARY
 
     Effective November 15, 1995, PageMart International, Inc. purchased 200,000
shares of common stock of PageMart Canada Limited ("PageMart Canada") which
represents 20% of the ownership of PageMart Canada. The remaining 800,000 shares
(representing 80% of the ownership) is held by PageMart Canada Holding
Corporation ("Canada Holding"). Canada Holding is owned 50% (1,000,000 shares of
Class A Common Stock) by third-party Canadian investors unrelated to PageMart
and 50% (1,000,000 shares of Class B Common Stock) by PageMart International,
Inc. The common shares have identical economic rights. However, voting control
of Canada Holding is held by the Class A Common Stockholders as the Class A
shares have two votes per share. The Company accounts for its investments in
PageMart Canada and Canada Holding under the equity method. Such investments are
included in Other Current Assets in the Consolidated Balance Sheets.
 
                                       F-9
<PAGE>   52
 
     The agreement among stockholders contains provisions which restrict the
transfer of Canada Holding shares and PageMart Canada shares for periods ranging
from three to five years. During the two years following the third anniversary
of the transactions, the third-party Canadian investors may exchange the
1,000,000 Class A common shares they hold in Canada Holding for 714,286 shares
of voting common stock of Wireless, subject to certain United States and
Canadian ownership requirements. Wireless is ultimately responsible for
effectuating the exchange within the United States and Canadian ownership
regulations. Such exchange may be accelerated in the event Wireless enters into
an agreement to be acquired. After the third anniversary of the transactions,
Wireless will have the right to purchase the shares held by the third-party
Canadian investors at their fair market value provided regulatory ownership
requirements permit such purchase.
 
     On November 26, 1998, the Company received notification from the third
party Canadian investors, which represent the controlling shareholder interest
in Canada Holding, of its intent to exchange its 1,000,000 shares of Class A
Common Stock in Canada Holding for shares of PageMart Wireless, Inc. pursuant to
its rights contained in the Agreement Among Stockholders of PageMart Canada,
dated July 28, 1995. The Agreement Among Stockholders permits the Company to
find a replacement for the Canadian investors in order to comply with Canadian
regulations governing ownership of Canadian paging licenses. The Company is
currently examining alternative arrangements in Canada including the replacement
of the Canadian investors or the ultimate transfer of PageMart Canada to another
entity. The Company may consider selling its interest in PageMart Canada in
exchange for a network affiliation arrangement similar to those utilized by the
Company in other countries.
 
6. OTHER CURRENT LIABILITIES
 
     Other current liabilities consisted of the following (in thousands):
 
<TABLE>
<CAPTION>
                                                                 DECEMBER 31,
                                                              ------------------
                                                               1997       1998
                                                              -------    -------
<S>                                                           <C>        <C>
Accrued payroll and employee benefits.......................  $ 4,080    $ 6,572
Accrued taxes...............................................    1,623      6,829
Other current liabilities...................................   15,037      9,896
                                                              -------    -------
                                                              $20,740    $23,297
                                                              =======    =======
</TABLE>
 
7. LONG-TERM DEBT
 
     Long-term debt consisted of the following (in thousands):
 
<TABLE>
<CAPTION>
                                                                  DECEMBER 31,
                                                              --------------------
                                                                1997        1998
                                                              --------    --------
<S>                                                           <C>         <C>
12 1/4% Senior Discount Exchange Notes, face amount $136,500
  due November 1, 2003, at accreted value...................  $122,720    $     --
15% Senior Discount Exchange Notes, face amount $207,270 due
  February 1, 2005, at accreted value.......................   153,398     177,270
11 1/4% Senior Subordinated Discount Exchange Notes, face
  amount $432,000 due February 1, 2008, at accreted value...        --     276,362
Vendor Financing Arrangement of $30 million, bearing
  interest at the sum of 7.00% and the London interbank
  offered rate for three month maturities, or the sum of
  4.25% and the U.S. prime rate. (Based upon rates quoted by
  The Wall Street Journal, effective interest rates ranged
  from 12.31% to 12.69% at December 31, 1998.)..............    15,981       9,685
                                                              --------    --------
          Total debt........................................   292,099     463,317
          Less: Current maturities..........................    (2,755)     (1,238)
                                                              --------    --------
          Long-term debt....................................  $289,344    $462,079
                                                              ========    ========
</TABLE>
 
                                      F-10
<PAGE>   53
 
     On January 28, 1998, the Company received approximately $249.7 million in
gross proceeds from the sale of its 11 1/4% Senior Subordinated Discount Notes
due 2008 (the "Offering"). Simultaneously with the closing of the Offering, the
Company refinanced certain of its outstanding indebtedness and modified its
corporate structure (the "Refinancing"). The Refinancing consisted of: (i)
purchasing all of the Company's outstanding 12 1/4% Senior Discount Notes due
2003 (the "12 1/4% Notes"); (ii) amending certain terms of the covenants and
agreements in the indenture relating to the Company's 15% Senior Discount Notes
due 2005; and (iii) merging PageMart, Inc. into PageMart Wireless, Inc., with
PageMart Wireless, Inc. as the surviving corporation.
 
     Approximately $130.7 million of the net proceeds of the Offering was used
to finance the retirement of the 12 1/4% Notes. The proceeds remaining after
expenses of the Offering and Refinancing were approximately $107.8 million. In
connection with the Refinancing, the Company incurred an extraordinary charge of
approximately $13.8 million in the first quarter of 1998 related to the early
retirement of debt.
 
     The 11 1/4% Senior Subordinated Discount Notes due 2008 (the "11 1/4%
Notes") have a principal amount at maturity of $432.0 million with an initial
accreted value of $249.7 million. The 11 1/4% Notes mature on February 1, 2008.
From and after August 1, 2003, interest on the 11 1/4% Notes will be paid
semiannually in cash at the rate of 11 1/4% per annum. The 11 1/4% Notes are
redeemable at any time on or after February 1, 2003, at the option of the
Company in whole or in part, at 105.625% of their principal amount at maturity,
plus accrued and unpaid interest, declining to 100% of their principal amount at
maturity plus accrued interest on and after February 1, 2006. In addition, at
any time prior to February 1, 2001, up to 35% of the accreted value of the
11 1/4% Notes may be redeemed at a redemption price of 111.25% of their accreted
value on the redemption date at the option of the Company in connection with a
public offering of its common stock, provided that at least $280.8 million
aggregate principal amount at maturity of the 11 1/4% Notes remains outstanding
after each redemption.
 
     In April 1998, the Company commenced an exchange offer pursuant to an
effective registration statement whereby all outstanding 11 1/4% Notes were
exchanged for the Company's 11 1/4% Senior Discount Exchange Notes due 2008 (the
"11 1/4% Exchange Notes"). The terms and conditions of the 11 1/4% Exchange
Notes are equivalent to the 11 1/4% Notes in all material respects.
 
     In January 1995, the Company completed an offering of 15% Senior Discount
Notes due 2005 and 725,445 shares of non-voting common stock, par value $.0001
per share (the "Unit Offering"). Net proceeds from the Unit Offering were
approximately $100 million, of which approximately $5.1 million was allocated to
the non-voting common stock. The 15% Senior Discount Notes due 2005 (the "15%
Notes") have a principal amount at maturity of $207.3 million with an initial
accreted value of $100 million. The 15% Notes mature on February 1, 2005. From
and after August 1, 2000, interest on the 15% Notes will be payable semiannually
in cash at the rate of 15% per annum. The 15% Notes are redeemable at any time
on or after February 1, 2000, at the option of the Company in whole or in part,
at 105% of their principal amount at maturity, plus accrued and unpaid interest,
declining to 100% of their principal amount at maturity plus accrued interest on
and after February 1, 2002.
 
     In June 1995, the Company commenced an exchange offer pursuant to an
effective registration statement whereby all outstanding 15% Notes were
exchanged for the Company's 15% Senior Discount Exchange Notes due 2005 (the
"15% Exchange Notes"). The terms and conditions of the 15% Exchange Notes are
equivalent to the 15% Notes in all material respects.
 
     The 11 1/4% Exchange Notes and the 15% Exchange Notes carry certain
restrictive covenants that, among other things, limit the ability of the Company
to incur indebtedness, pay dividends, prepay subordinated indebtedness,
repurchase capital stock, create liens, sell assets, engage in mergers and
consolidations, and enter into transactions with any holder of 5% or more of any
capital stock of the Company or any of its affiliates. The Company was in
compliance with all such restrictive covenants at December 31, 1998.
 
     In March 1997, the Company entered into a vendor financing arrangement with
an infrastructure vendor (the "Vendor Financing Arrangement"), providing for the
financing of infrastructure equipment over a period of 60 months up to a maximum
aggregate amount of $30 million. Borrowings under the Vendor Financing
 
                                      F-11
<PAGE>   54
 
Arrangement are secured by the equipment purchased. The interest rate applicable
to such financing is equal to the sum of 7.00% and the London interbank offered
rate ("LIBOR") as published in The Wall Street Journal for three-month
maturities or the sum of 4.25% and the U.S. prime rate of interest as published
in The Wall Street Journal. During the first quarter ended March 31, 1998, the
Company repaid the total amount outstanding of $21.2 million on the Vendor
Financing Arrangement and modified the agreement to provide $30 million of
available financing, in aggregate, during the period from September 1, 1998
through December 31, 2000. As of December 31, 1998, there are $9.7 million in
loans outstanding. The weighted average interest rate in effect on December 31,
1998 with respect to the Vendor Financing Arrangement was 12.56%.
 
     On May 11, 1995, the Company entered into a four year Revolving Credit
Agreement with BT Commercial Corporation, as Agent, and Bankers Trust Company,
as Issuing Bank, which provides for a $50 million revolving line of credit (the
"Revolving Credit Agreement"). As of December 31, 1998, there were no loans
outstanding under the Revolving Credit Agreement. The maximum amount available
under the Revolving Credit Agreement at any time is limited to a borrowing base
amount equal to the lesser of (i) a specified percentage of eligible accounts
receivable and inventory owned by Wireless, and (ii) an amount equal to the
service contribution of the Company as defined in the Revolving Credit Agreement
for the immediately preceding three-month period times 4.0. The interest rate
applicable to loans under the Revolving Credit Agreement is, at the option of
Wireless, either at a prime rate plus 1 1/4% or a Eurodollar rate plus 2 1/2%.
Commitments under the Revolving Credit Agreement expire and all loans thereunder
will be due and payable on March 31, 1999.
 
     The Revolving Credit Agreement contains certain covenants that, among other
things, limit the ability of the Company to incur indebtedness, make capital
expenditures and investments, pay dividends, repurchase capital stock, engage in
transactions with affiliates, create liens, sell assets, or engage in mergers
and consolidations, and also requires the Company to maintain certain financial
ratios.
 
     The Revolving Credit Agreement is secured by all trade receivables and
inventory owned by Wireless from time to time and by all of the capital stock of
PageMart owned by Wireless. As of December 31, 1998, the maximum amount
available under the Revolving Credit Agreement was $24.8 million.
 
     On January 15, 1998, the Company amended the Revolving Credit Agreement to
provide for the changes in debt and corporate structure that occurred with the
Refinancing and the Merger.
 
     Maturities of long-term debt, at accreted value, and amounts outstanding
under the Vendor Financing Agreement are as follows (in thousands):
 
<TABLE>
<CAPTION>
FOR THE YEAR ENDING
   DECEMBER 31,
- -------------------
<S>                 <C>                                                   <C>
      1999..............................................................  $  1,238
      2000..............................................................     2,071
      2001..............................................................     1,967
      2002..............................................................     2,230
      2003..............................................................     2,179
      Thereafter........................................................   453,632
                                                                          --------
                                                                          $463,317
                                                                          ========
</TABLE>
 
                                      F-12
<PAGE>   55
 
8. COMMITMENTS AND CONTINGENCIES
 
     The Company has entered into various operating lease agreements for office
space, office equipment and transmission equipment sites. Total rent expense for
1996, 1997 and 1998 was approximately $13,496,000, $18,379,000 and $26,749,000,
respectively.
 
     Future minimum lease payments related to the Company's operating leases are
as follows (in thousands):
 
<TABLE>
<CAPTION>
FOR THE YEAR ENDING                                                        OPERATING
   DECEMBER 31,                                                             LEASES
- -------------------                                                        ---------
<S>                 <C>                                                    <C>
      1999...............................................................    $21,131
      2000...............................................................     17,871
      2001...............................................................     13,699
      2002...............................................................      9,924
      2003...............................................................      6,623
      Thereafter.........................................................     18,523
                                                                             -------
      Total minimum lease payments.......................................    $87,771
                                                                             =======
</TABLE>
 
     The Company is party to various legal proceedings arising out of the
ordinary course of business. The Company believes, based on the advice of legal
counsel, that there is no proceeding, either threatened or pending, against the
Company that could result in a material adverse effect on the results of
operations or financial condition of the Company.
 
     In December 1995, the Company transferred certain intellectual property to
a significant vendor in exchange for certain benefits which will be recognized
over a forty-seven month period. The Company also committed to purchase $40
million in network infrastructure equipment over a forty-seven month period as
part of this transaction. Through December 31, 1998, the Company had purchased
$31.9 million of network infrastructure under this purchase commitment.
 
9. FAIR VALUES OF FINANCIAL INSTRUMENTS
 
     The following methods and assumptions were used by the Company in
estimating the fair value disclosures for its financial instruments. For cash
and cash equivalents, the carrying amounts reported in the Consolidated Balance
Sheets are equal to fair value. For debt, the estimated fair value is based upon
quoted market prices for publicly traded debt and based on the appropriate
interest rate at year-end for all other debt.
 
     The carrying amounts and fair values of the Company's financial instruments
at December 31, 1997 and 1998, are as follows (in thousands):
 
<TABLE>
<CAPTION>
                                                      DECEMBER 31, 1997     DECEMBER 31, 1998
                                                     -------------------   -------------------
                                                     CARRYING     FAIR     CARRYING     FAIR
                                                      AMOUNT     VALUE      AMOUNT     VALUE
                                                     --------   --------   --------   --------
<S>                                                  <C>        <C>        <C>        <C>
Cash and cash equivalents.........................   $  8,337   $  8,337   $ 17,476   $ 17,476
Long-term debt....................................   $292,099   $275,666   $463,317   $381,157
</TABLE>
 
10. STOCKHOLDERS' (DEFICIT) EQUITY
 
PREFERRED STOCK
 
     Under the Company's Certificate of Incorporation, the Board of Directors
has the power to authorize the issuance of one or more classes or series of
preferred stock and to fix the designations, powers, preferences and relative,
participating, optional or other rights, if any, and the qualifications,
limitations or restrictions thereof, if any, with respect to each such class or
series of preferred stock. At December 31, 1997 and 1998, there were 10 million
shares of preferred stock authorized with a par value of $.0001 and none of the
authorized shares of preferred stock were issued and outstanding.
 
                                      F-13
<PAGE>   56
 
COMMON STOCK
 
     In October 1993 in connection with issuance of the 12 1/4% Notes (see Note
7), the Company issued warrants to purchase 627,900 shares of its common stock
for $3.26 per share. The warrants were valued at $5.50 per share at the date
issued. The warrants may be exercised at any time prior to December 31, 2003.
Warrants that are not exercised by such date will expire. As of December 31,
1998, 578,450 of the warrants were outstanding.
 
     In October 1995, the Company's Certificate of Incorporation was amended
(the "Amended Certificate") and at that time the Amended and Restated Agreement
Among Certain Stockholders of PageMart Nationwide, Inc. dated September 19, 1995
(the "Stockholders' Agreement"), became effective. The Amended Certificate
provides that the Company will have four classes of outstanding common stock,
summarized as follows:
 
<TABLE>
<CAPTION>
                                                                           SHARES ISSUED AND
                                                                              OUTSTANDING
                                                                        -----------------------
                                                                             DECEMBER 31,
                                                             SHARES     -----------------------
                                                           AUTHORIZED      1997         1998
                                                           ----------   ----------   ----------
<S>                                                        <C>          <C>          <C>
Class A Convertible Common Stock, $.0001 par value per
  share (the "Class A Common Stock")....................   60,000,000   34,115,157   34,536,512
Class B Convertible Non-Voting Common Stock, $.0001 par
  value per share (the "Class B Common Stock")..........   12,000,000    3,809,363    3,809,363
Class C Convertible Non-Voting Common Stock, $.0001 par
  value per share (the "Class C Common Stock")..........    2,000,000    1,428,472    1,428,472
Class D Convertible Non-Voting Common Stock, $.0001 par
  value per share (the "Class D Common Stock")..........    1,000,000      679,945      623,945
                                                           ----------   ----------   ----------
                                                           75,000,000   40,032,937   40,398,292
                                                           ==========   ==========   ==========
</TABLE>
 
     Upon filing of the Amended Certificate, all shares of previously
outstanding common stock were automatically converted into shares of Class A
Common Stock, and all shares of previously outstanding non-voting common stock
issued in the Unit Offering were converted into shares of Class D Common Stock.
Additionally, pursuant to the Stockholders' Agreement, a number of shares of
Class A Common Stock owned by certain institutional investors were automatically
converted into shares of Class B Common Stock and Class C Common Stock.
 
     Class A Common Stock, Class B Common Stock and Class C Common Stock are
convertible by certain institutional investors subject to voting control and
regulatory restrictions at any time at the option of the holder, in accordance
with the terms of the Amended Certificate. Class A Common Stock is convertible
by certain holders thereof into either Class B or C Common Stock. Classes B, C
and D Common Stock are convertible to Class A Common Stock. During the year
ended December 31, 1998, certain holders of Class D Common Stock exercised their
right under the Stockholder's Agreement and converted 56,000 shares into Class A
Common Stock.
 
     The Stockholders' Agreement provides that the parties thereto ("Holders")
shall collectively have the right to "demand" registrations at any time.
Pursuant to these "demand" rights, Holders of common stock (the "Registrable
Securities") may request in writing that the Company file a registration
statement under the Securities Act of 1933, as amended (the "Securities Act"),
covering the registration of a number of shares equal to at least three million
shares or a lesser number if such number represents a majority of the
Registrable Securities then outstanding.
 
     On March 20, 1995, the Company granted to a strategic partner warrants to
purchase a total of 206,748 shares of the Company's common stock at an exercise
price of $10.00 all of which are outstanding at December 31, 1998. The warrants
may be exercised in whole or in part starting on March 20, 1997 and expire on
March 21, 2005.
 
                                      F-14
<PAGE>   57
 
     On June 19, 1996, the Company issued an aggregate of 6,000,000 shares of
Class A Common Stock in an initial public offering at a price of $13.00 per
share. The Company received proceeds from the initial public offering of
approximately $70.5 million after deducting underwriting discounts, commissions,
fees and expenses associated with the initial public offering. Upon receipt of
the net proceeds, the Company retired vendor debt of approximately $12.9 million
and repaid approximately $11.9 million of loans outstanding under the Company's
Revolving Credit Agreement.
 
     Following is a schedule of common stock reserved at December 31, 1998:
 
<TABLE>
<CAPTION>
                                                               SHARES
                                                              ---------
<S>                                                           <C>
Exercise of common stock warrants...........................    785,198
Exchange of Canada Holding shares...........................    714,286
Stock option/stock issuance plan............................  6,159,775
Employee Stock Purchase Plan................................    389,057
Non-Employee/Director Stock Option Plan.....................    100,000
                                                              ---------
                                                              8,148,316
                                                              =========
</TABLE>
 
11. STOCK OPTION/STOCK ISSUANCE/STOCK PURCHASE PLANS
 
                            STOCK COMPENSATION PLANS
 
     At December 31, 1998, the Company has three stock-based compensation plans,
the 1991 Stock Option/Issuance Plan, the 1996 Nonqualified Stock Option Plan for
Non-Employee Directors and the Employee Stock Purchase Plan. The Company applies
Accounting Principles Board Opinion 25 and related Interpretations to account
for expenses related to its plans. Accordingly, no compensation costs have been
recognized for its fixed option plans or its employee stock purchase plan. If
compensation costs for these plans had been determined based on the fair value
at the grant dates for awards under the plans consistent with the method of
Statement of Financial Accounting Standards No. 123, "Accounting for Stock Based
Compensation" ("SFAS 123"), the Company's net loss and loss per share would have
been increased to the pro forma amounts indicated below:
 
<TABLE>
<CAPTION>
                                                          1996       1997       1998
                                                        --------   --------   --------
<S>                                       <C>           <C>        <C>        <C>
Net loss (in 000's).....................  As reported   $(48,598)  $(43,887)  $(59,316)
                                          Pro forma      (50,095)   (46,568)   (62,446)
Basic and diluted loss per share........  As reported   $  (1.30)  $  (1.10)  $  (1.47)
                                          Pro forma        (1.34)     (1.17)     (1.55)
</TABLE>
 
                            FIXED STOCK OPTION PLANS
 
     The Company has two fixed stock option plans. Under the Fifth Amended and
Restated 1991 Stock Option Plan, ("1991 Plan"), the Company may grant options to
its employees for up to 7,500,000 shares of Class A Common Stock. Under the 1996
Nonqualified Stock Option Plan for Non-Employee Directors, ("Directors Plan"),
the Company may grant options to its non-employee directors for up to 100,000
shares of common stock. Under both plans, the exercise price of each option
equals the market price of the Company's stock at the close of the market on the
date of grant and an option's maximum term is 10 years. Options are granted at
various times during the year and generally vest over a five year period under
the 1991 Plan and over a three year period under the Directors Plan. Both plans
are administered by the Board of Directors.
 
     Under the provisions of the Third Amended and Restated 1991 Stock Issuance
Plan, the Company may also issue stock to employees. The stock vests over a
period not to exceed forty-eight months. Additional vesting occurs upon death or
disability. Upon the termination of an officer, the Company can repurchase the
unvested stock at cost. Under the Plan, the Company issued 300,000 shares to an
officer during 1992 at $0.326 per share. All awards under the Plan have been
made at a price at or above the estimated fair value of the Company's common
stock at the date of grant.
 
                                      F-15
<PAGE>   58
 
     The pro forma net loss and loss per share amounts disclosed above reflect
the SFAS 123 adjustment for pro forma compensation cost for the fair value of
each option grant, which was estimated on the date of grant using the
Black-Scholes option-pricing model with the following weighted-average
assumptions:
 
<TABLE>
<CAPTION>
                                                              1996    1997    1998
                                                              ----    ----    ----
<S>                                                           <C>     <C>     <C>
1991 PLAN:
  Dividend yield............................................    --      --      --
  Expected volatility.......................................  40.0%   47.3%   48.2%
  Average risk-free interest rate...........................   6.4%    6.3%    5.1%
  Expected term in years....................................   8.2     8.7     8.1
DIRECTORS PLAN:
  Dividend yield............................................    --      --      --
  Expected volatility.......................................  40.0%   40.0%   48.2%
  Average risk-free interest rate...........................   6.7%    6.7%    4.5%
  Expected term in years....................................   8.2     8.2    10.0
</TABLE>
 
     A summary of the status of the Company's 1991 Plan and Directors Plan as of
December 31, 1996, 1997 and 1998 and changes during the years ending on these
dates is presented below:
 
                                   1991 PLAN
 
<TABLE>
<CAPTION>
                                                 1996                1997                1998
                                           -----------------   -----------------   -----------------
                                                    WEIGHTED            WEIGHTED            WEIGHTED
                                                    AVERAGE             AVERAGE             AVERAGE
                                           SHARES   EXERCISE   SHARES   EXERCISE   SHARES   EXERCISE
                                           (000)     PRICE     (000)     PRICE     (000)     PRICE
                                           ------   --------   ------   --------   ------   --------
<S>                                        <C>      <C>        <C>      <C>        <C>      <C>
Outstanding at beginning of year........   2,669     $6.59      3,473    $7.09     4,276     $7.12
Granted.................................   1,126      8.49      2,502     8.36     2,277      7.61
Exercised...............................     (64)     5.24       (135)    4.19      (329)     4.86
Forfeited...............................    (258)     8.51     (1,564)    9.28      (573)     8.57
                                           -----               ------              -----
Outstanding at end of year..............   3,473     $7.09      4,276    $7.12     5,651     $7.30
                                           =====               ======              =====
 
Options exercisable at year-end.........   1,077     $5.19      1,502    $5.26     1,892     $6.19
                                           =====               ======              =====
 
Weighted-average fair value of options
  granted during the year...............             $5.02               $4.74               $4.68
                                                     =====               =====               =====
</TABLE>
 
                                 DIRECTORS PLAN
 
<TABLE>
<CAPTION>
                                                 1996                1997                1998
                                           -----------------   -----------------   -----------------
                                                    WEIGHTED            WEIGHTED            WEIGHTED
                                                    AVERAGE             AVERAGE             AVERAGE
                                           SHARES   EXERCISE   SHARES   EXERCISE   SHARES   EXERCISE
                                           (000)     PRICE     (000)     PRICE     (000)     PRICE
                                           ------   --------   ------   --------   ------   --------
<S>                                        <C>      <C>        <C>      <C>        <C>      <C>
Outstanding at beginning of year.........    --      $   --      25      $12.00      25      $12.00
Granted..................................    25       12.00      --          --      25        6.05
Exercised................................    --          --      --          --      --          --
Forfeited................................    --          --      --          --      --          --
                                             --                  --                  --
Outstanding at end of year...............    25      $12.00      25      $12.00      50      $ 9.03
                                             ==                  ==                  ==
 
Options exercisable at year-end..........     6      $12.00      15      $12.00      23      $12.00
                                             ==                  ==                  ==
 
Weighted-average fair value of options
  granted during the year................            $ 7.04              $   --              $ 3.93
                                                     ======              ======              ======
</TABLE>
 
                                      F-16
<PAGE>   59
 
     The following table summarized information about fixed stock options
outstanding at December 31, 1998:
 
<TABLE>
<CAPTION>
                                OPTIONS OUTSTANDING                     OPTIONS EXERCISABLE
                  -----------------------------------------------   ----------------------------
                    NUMBER       WEIGHTED-AVG.                        NUMBER
   RANGE OF       OUTSTANDING      REMAINING       WEIGHTED-AVG.    EXERCISABLE   WEIGHTED-AVG.
EXERCISE PRICES   AT 12/31/98   CONTRACTUAL LIFE   EXERCISE PRICE   AT 12/31/98   EXERCISE PRICE
- ---------------   -----------   ----------------   --------------   -----------   --------------
<S>               <C>           <C>                <C>              <C>           <C>
 
      1991 PLAN
 
$ 0.00 to  2.00      122,317          3.0              $ 0.91          122,317        $ 0.91
  2.01 to  4.00      348,367          4.4                3.26          348,367          3.26
  4.01 to  6.00      112,967          7.7                5.60           49,670          5.42
  6.01 to  8.00    3,017,398          8.0                6.60        1,139,171          6.92
  8.01 to 10.00    2,039,572          9.1                9.49          227,337          9.93
 10.01 to 12.00       10,350          7.4               10.81            5,196         10.82

 DIRECTORS PLAN
 
$ 0.00 to 12.00       50,000          8.5              $ 9.03           22,915        $12.00
</TABLE>
 
                          EMPLOYEE STOCK PURCHASE PLAN
 
     Under the Employee Stock Purchase Plan, the Company is authorized to issue
up to 500,000 shares of common stock to its eligible employees. Under terms of
the Plan, employees can choose on January 1 and July 1 of each year to have a
portion of their earnings not to exceed $25,000 of market value per year
withheld to purchase the Company's common stock. The purchase price of the stock
is 90 percent of the lower of the market price on the grant date or the market
price on the June 30 or December 31 immediately following the grant date of an
option. Under the Plan, the Company sold 31,275 shares to employees in 1996,
44,616 shares in 1997 and 35,052 shares in 1998. The weighted-average fair value
of the purchased rights granted in 1996 was $2.14, $1.65 in 1997 and $2.06 in
1998. The pro forma net loss and loss per share amounts disclosed above reflect
the SFAS 123 adjustment for pro forma compensation cost for the fair value of
the employees' purchase rights, which was estimated using the Black-Scholes
model with the following assumptions:
 
<TABLE>
<CAPTION>
                                                              1996    1997    1998
                                                              ----    ----    ----
<S>                                                           <C>     <C>     <C>
EMPLOYEE STOCK PURCHASE PLAN:
  Dividend yield............................................    --      --      --
  Expected volatility.......................................  40.0%   47.3%   48.2%
  Average risk-free interest rate...........................   6.3%    5.4%    5.4%
  Expected term in years....................................   0.5     0.5     0.5
</TABLE>
 
12. FEDERAL INCOME TAXES
 
     Effective January 1, 1993, the Company adopted Statement of Financial
Accounting Standards No. 109, "Accounting for Income Taxes" ("SFAS 109"). SFAS
109 requires an asset and liability approach which requires the recognition of
deferred tax assets and liabilities for the expected future tax consequences of
events which have been recognized in the Company's financial statements. The
Company had approximately $222.6 million of net operating loss carryforwards for
federal income tax purposes at December 31, 1998. The net operating loss
carryforwards will expire in the years 2004 through 2018 if not previously
utilized. The utilization of these carryforwards is subject to certain
limitations. Of the net operating loss carryforwards at December 31, 1998,
management has estimated that approximately $38.9 million is subject to an
annual utilization limit of $4.8 million.
 
     In connection with the adoption of SFAS 109, the Company has recorded a
valuation reserve equal to its net deferred tax asset at each reporting period
as management believes that it is more likely than not that such asset will not
be realized, due to historical and anticipated future operating losses.
Accordingly, the adoption of SFAS 109 did not have an effect on the Company's
financial position or results of operations. Management
 
                                      F-17
<PAGE>   60
 
will evaluate the appropriateness of the reserve in the future based upon
historical and operating results of the Company.
 
     Deferred income taxes reflect the tax consequences on future years of
temporary differences between the tax basis of assets and liabilities and their
financial reporting basis and the potential benefits of certain tax
carryforwards. The significant deferred tax assets and liabilities, as
determined under the provisions of SFAS 109, and the change in those assets and
liabilities are as follows (in thousands):
 
<TABLE>
<CAPTION>
                                                            DECEMBER 31,              DECEMBER 31,
                                                                1997        CHANGE        1998
                                                            ------------   --------   ------------
<S>                                                         <C>            <C>        <C>
Gross deferred tax asset:
  Net operating loss carryforwards........................    $ 53,545     $ 22,123    $  75,668
  Bad debt reserve........................................       4,209       (3,731)         478
  Inventory reserve.......................................       3,467       (3,528)         (61)
  Accretion of Senior Discount Notes......................      35,544       13,697       49,241
  Other...................................................       1,379         (120)       1,259
                                                              --------     --------    ---------
                                                                98,144       28,441      126,585
Gross deferred tax liability:
  Depreciation............................................     (11,289)       7,195       (4,094)
                                                              --------     --------    ---------
                                                                86,855       35,636      122,491
     Valuation allowance..................................     (86,855)     (35,636)    (122,491)
                                                              --------     --------    ---------
     Net deferred tax asset...............................    $     --     $     --    $      --
                                                              ========     ========    =========
</TABLE>
 
13. EXTRAORDINARY ITEMS
 
     In connection with the Refinancing (as discussed in Note 7), the Company
incurred an extraordinary charge of approximately $13.8 million in the first
quarter of 1998 related to the early retirement of debt.
 
     On May 19, 1998, the Company and many other paging companies experienced an
unprecedented interruption of service when the PanAmSat Galaxy IV communications
satellite, on which the Company leased capacity, ceased to communicate with
paging uplink stations throughout the United States. Management believes that
this is the first event of its kind to affect the paging industry in the 35 year
history of satellite telecommunications. This event occurred when the
satellite's onboard control system and a back-up control system failed and
PanAmSat technicians were unable to restore the satellite's proper orientation
toward Earth.
 
     The Company initiated its recovery plan by re-orienting its satellite links
to its back-up satellites. In order to re-orient the satellite links, the
Company realigned satellite dish antennas on each of its approximately 2,000
transmission sites to receive the back-up satellites' signals. Although the
satellite failure was beyond the Company's control, the Company provided its
customers with a two-day airtime credit to compensate them for the period when
they were unable to receive messages. The Company incurred $3.8 million of costs
(including the airtime credit)during the three months ended June 30, 1998 and
has recorded these costs as an extraordinary charge.
 
14. START-UP COSTS
 
     In April, 1998, the AICPA (AcSEC -- Accounting Standards Executive
Committee) issued Statement of Position 98-5, "Reporting on the Costs of
Start-Up Activities" ("SOP 98-5"). The intent of SOP 98-5 is to have all
companies account for start-up costs consistently. The SOP is effective for
financial statements for fiscal years beginning after December 15, 1998. The
initial application of this SOP is reported as the cumulative effect of change
in accounting principle as described in Accounting Principles Board Opinion No.
20, Accounting Changes.
 
     The Company has not capitalized "start-up" costs as defined by SOP 98-5.
Therefore, the adoption of SOP 98-5 will have no effect on the Company's
financial statements.
 
                                      F-18
<PAGE>   61
 
15. COMPREHENSIVE INCOME (LOSS)
 
     In January 1998, the Company adopted the Financial Accounting Standards
Board Statement No. 130 -- Reporting Comprehensive Income, which establishes
standards for reporting comprehensive income and its components within the
financial statements. Comprehensive income is defined as all changes in the
equity of a business enterprise from transactions and other events and
circumstances, except those resulting from investments by owners and
distributions to owners. The Company's comprehensive income components are
immaterial for the periods ended December 31, 1998 and 1997; therefore,
comprehensive income is the same as net income for both periods.
 
16. RELATED-PARTY TRANSACTIONS
 
     In connection with the Unit Offering completed in 1995 (see Note 7), the
Company incurred $3.8 million in fees to an affiliate of a shareholder. In
addition, an affiliate of a shareholder acted as an underwriter of the Company's
initial public offering in June 1996 and received $2.0 million in compensation
in the form of an underwriter's discount. An affiliate of a shareholder also
acted as placement agent for the 11 1/4% Notes offering and received
compensation from the Company in the amount of $8.1 million for acting in such
capacity.
 
     As of December 31, 1998, the president and certain other officers of the
Company are indebted to the Company in the aggregate amount of $573,000 under
promissory notes issued in connection with the purchase of the Company's common
stock (the "Notes"). The Notes have terms ranging from three to four years and
are secured by common stock owned by the officers. The Notes bear interest at
the Applicable Federal Rate in effect on the date of issuance as published by
the Internal Revenue Service. Annual interest rates on the Notes range from
3.55% to 6.90%. Interest is due and payable annually beginning on the first
anniversary of the date of each Note. All Notes are included in Stock
Subscriptions Receivable in the Consolidated Balance Sheets.
 
17. SEGMENT REPORTING
 
     In June 1997, the FASB issued Statement No. 131, "Disclosures about
Segments of an Enterprise and Related Information" ("SFAS 131"). The Company
adopted SFAS 131 for the fiscal year ending December 31, 1998. SFAS 131
establishes accounting standards for the way that public business enterprises
report information about operating segments in annual financial statements and
requires that those enterprises report selected information about operating
segments in interim financial reports issued to shareholders. It also
establishes standards for related disclosures about products and services,
geographic areas and major customers.
 
     The Company's reportable segments are divisions that offer different
products and/or services. They are managed separately because each division
requires different technology and management strategies. The Company reports
segments based on these divisions as management makes operating decisions and
assesses individual performances based on the performance of these segments.
 
     The Company has three reportable segments: PageMart Paging, PageMart PCS
and PageMart International. Through its PageMart Paging division, the Company
has constructed and operates a wireless messaging and communications network and
provides paging and other one-way wireless messaging services to its
subscribers. Through its PageMart PCS division, the Company has constructed and
operates an advanced messaging network as an overlay of its one-way network.
Advanced messaging service was first offered in Austin and San Antonio, Texas in
June of 1998. As of December 15, 1998, advanced messaging services are available
to approximately seventy percent of the U.S. population. Through PageMart
International, the Company provides messaging services in selected countries on
a seamless international network. The Company pursues international
opportunities through foreign related entities, interests in joint venture
arrangements, or network affiliation agreements between the Company and the
owners of foreign networks.
 
     The accounting policies of the segments are the same as those described in
the summary of significant accounting policies except for the allocation of debt
by divisions.
 
                                      F-19
<PAGE>   62
 
     The Company has allocated proceeds from equity and debt offerings to its
PageMart Paging and PageMart PCS divisions. The methodology the Company has
followed to date results in the attribution of the proceeds of each offering
based on the specific capital and operating requirements of each division.
Positive free cash flow generated by a division is utilized to reduce its
respective debt allocation. As of December 31, 1998, $155.9 million and $72.5
million of equity and $125.0 million and $338.3 million of debt have been
allocated to PageMart Paging and PageMart PCS, respectively. For the twelve
months ended December 31, 1998, interest expense of $18.6 million and $25.2
million was allocated to PageMart Paging and PageMart PCS, respectively.
 
     The following table sets forth segment financial information related to the
Company's various operations (in thousands):
 
<TABLE>
<CAPTION>
                                                         FISCAL YEAR ENDED DECEMBER 31, 1996
                                                  --------------------------------------------------
                                                  PAGEMART   PAGEMART     PAGEMART
                                                   PAGING      PCS      INTERNATIONAL   CONSOLIDATED
                                                  --------   --------   -------------   ------------
<S>                                               <C>        <C>        <C>             <C>
Revenues........................................  $221,592   $     --     $     --        $221,592
Operating loss..................................   (11,465)      (657)        (447)        (12,569)
Interest expense................................    16,137     18,904           --          35,041
Interest income.................................       153        987           --           1,140
Net loss........................................   (27,638)   (18,574)      (2,386)        (48,598)
EBITDA(1).......................................     9,727       (657)        (447)          8,623
Total assets....................................   160,719    151,108        1,793         313,620
Capital expenditures............................    50,838     12,966           --          63,804
</TABLE>
 
<TABLE>
<CAPTION>
                                                         FISCAL YEAR ENDED DECEMBER 31, 1997
                                                  --------------------------------------------------
                                                  PAGEMART   PAGEMART     PAGEMART
                                                   PAGING      PCS      INTERNATIONAL   CONSOLIDATED
                                                  --------   --------   -------------   ------------
<S>                                               <C>        <C>        <C>             <C>
Revenues........................................  $277,605   $     --     $    173        $277,778
Operating loss..................................    (1,887)      (207)        (497)         (2,591)
Interest expense................................    18,679     19,820           --          38,499
Interest income.................................        65        436           --             501
Net loss........................................   (20,987)   (19,591)      (3,309)        (43,887)
EBITDA(1).......................................    27,774        (16)        (497)         27,261
Total assets....................................   175,359    185,943          574         361,876
Capital expenditures............................    32,169     35,337           --          67,506
</TABLE>
 
<TABLE>
<CAPTION>
                                                        FISCAL YEAR ENDED DECEMBER 31, 1998
                                                ----------------------------------------------------
                                                PAGEMART   PAGEMART      PAGEMART
                                                 PAGING      PCS       INTERNATIONAL    CONSOLIDATED
                                                --------   --------   ---------------   ------------
<S>                                             <C>        <C>        <C>               <C>
Revenues......................................  $311,469   $     96       $    87         $311,652
Operating income (loss).......................    17,603    (14,506)         (647)           2,450
Interest expense..............................    18,636     25,162            --           43,798
Interest income...............................        42      3,145            --            3,187
Loss before extraordinary items...............      (893)   (37,284)       (3,533)         (41,710)
EBITDA(1).....................................    55,208     (8,691)         (647)          45,870
Total assets..................................   166,766    325,118         2,171          494,055
Capital expenditures..........................    40,386    128,032           128          168,546
</TABLE>
 
- ---------------
 
(1) EBITDA represents earnings (loss) before interest, taxes, depreciation,
    amortization, other expenses and extraordinary items. EBITDA is a financial
    measure commonly used in the paging industry. EBITDA is not derived pursuant
    to generally accepted accounting principles ("GAAP"), and therefore should
    not be construed as an alternative to cash flows from operating activities
    (as determined in accordance with GAAP) or as a measure of liquidity. The
    calculation of EBITDA does not include the commitments of the Company for
    capital expenditures and payment of debt and should not be deemed to
    represent funds available to the Company.
 
                                      F-20
<PAGE>   63
 
18. SUBSEQUENT EVENT
 
     On March 23, 1999, the Company entered into a four year credit agreement
with Bankers Trust Company and Morgan Stanley Senior Funding, Inc. which
provides for a $100 million credit facility (the "Credit Facility"). The Credit
Facility replaces the Revolving Credit Agreement (see Note 7), which was
simultaneously terminated. The Credit Facility provides for $75 million of
multi-draw term loans (the "Term Loans") and $25 million of revolving loans (the
"Revolving Loans"). As of March 23, 1999, $50 million was immediately available
to the Company, $10 million of which was Revolving Loans. On March 24, 1999, the
Company borrowed $25 million in Term Loans pursuant to terms of the Credit
Facility. Approximately $12 million of the initial borrowing was used to repay
amounts outstanding under the Vendor Financing Arrangement (see Note 7) and to
fund the fees and expenses of the Credit Facility.
 
     The Credit Facility bears interest at the U.S. prime rate plus 2.75% or at
LIBOR plus 3.75%. The interest rate on the amounts borrowed on March 24, 1998
was 11.0%. Further availability of the Credit Facility beyond the initial $50
million is based on the Company's achievement of certain minimum targets for
advanced messaging subscriber units in service.
 
     The Credit Facility contains certain restrictive covenants that, among
other things, limits the ability of the Company to incur indebtedness, pay
dividends, repurchase capital stock, engage in transactions with stockholders
and affiliates, create liens, sell assets, enter into leases and engage in
mergers and consolidations, and requires the Company to maintain certain
operating and financial performance measures and limits the ability of the
Company to make capital expenditures.
 
                                      F-21
<PAGE>   64
 
                    REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS
                        ON FINANCIAL STATEMENT SCHEDULE
 
To the Board of Directors and Stockholders of PageMart Wireless, Inc.:
 
     We have audited, in accordance with generally accepted auditing standards,
the consolidated financial statements of PageMart Wireless, Inc. and
subsidiaries as of December 31, 1997 and 1998, and the related consolidated
statements of operations, stockholders' (deficit) equity and cash flows for each
of the three years in the period ended December 31, 1998, included in this Form
10-K and have issued our report thereon dated February 3, 1999 (except with
respect to the matter discussed in Note 18, as to which the date is March 26,
1999). These consolidated financial statements and the schedule referred to
below are the responsibility of the Company's management. Our responsibility is
to express an opinion on these consolidated financial statements and schedule
based on our audits.
 
     Our audits were made for the purpose of forming an opinion on the basic
consolidated financial statements taken as a whole. Schedule II -- Valuation and
Qualifying Accounts is not a required part of the basic consolidated financial
statements but is supplementary information required by the Securities and
Exchange Commission. This information has been subjected to the auditing
procedures applied in our audit of the basic financial statements and, in our
opinion, is fairly stated in all material respects in relation to the basic
consolidated financial statements taken as a whole.
 
                                            /s/ ARTHUR ANDERSEN LLP
 
Dallas, Texas,
March 26, 1999
 
                                       S-1
<PAGE>   65
 
                    PAGEMART WIRELESS, INC. AND SUBSIDIARIES
 
                SCHEDULE II -- VALUATION AND QUALIFYING ACCOUNTS
              FOR THE YEARS ENDED DECEMBER 31, 1996, 1997 AND 1998
                             (DOLLARS IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                            ADDITIONS
                                                     -----------------------
                                        BALANCE AT   CHARGED TO   CHARGED TO
                                        BEGINNING    COSTS AND      OTHER                    BALANCE AT
             DESCRIPTION                OF PERIOD     EXPENSES     ACCOUNTS    DEDUCTIONS   END OF PERIOD
             -----------                ----------   ----------   ----------   ----------   -------------
<S>                                     <C>          <C>          <C>          <C>          <C>
ALLOWANCE FOR DOUBTFUL ACCOUNTS
Year Ended December 31, 1998..........    $7,170      $11,130        $ --       $15,720(a)     $2,580
Year Ended December 31, 1997..........    $4,776      $10,910        $ --       $ 8,516(a)     $7,170
Year Ended December 31, 1996..........    $4,534      $ 6,986        $ --       $ 6,744(a)     $4,776
</TABLE>
 
- ---------------
 
(a) Accounts written off as uncollectible, net of recoveries.
 
                                       S-2
<PAGE>   66
 
                               INDEX TO EXHIBITS
 
<TABLE>
<CAPTION>
        EXHIBIT
          NO.                               DESCRIPTION OF EXHIBIT
        -------                             ----------------------
<C>                      <S>
          3.1            Restated Certificate of Incorporation of PageMart Wireless,
                            Inc. (filed as an exhibit to the Registration Statement
                            on Form S-1 of the Company (Reg. No. 33-03012), and
                            incorporated herein by reference).
          3.2            Certificate of Amendment to Restated Certificate of
                            Incorporation of PageMart Wireless, Inc. dated December
                            28, 1995 (filed as an exhibit to the Registration
                            Statement on Form S-1 of the Company (Reg. No. 33-03012),
                            and incorporated herein by reference).
          3.3            By-laws of PageMart Wireless, Inc. (filed as an exhibit to
                            the Form 10-K of the Company for the fiscal year ended
                            December 31, 1997, and incorporated herein by reference.)
          3.4            Certificate of Amendment to Restated Certificate of
                            Incorporation of PageMart Wireless, Inc. dated May 9,
                            1996 (filed as an exhibit to the Registration Statement
                            on Form S-1 of the Company (Reg. No. 33-03012), and
                            incorporated herein by reference).
          3.5            Certificate of Ownership and Merger merging PageMart, Inc.
                            into PageMart Wireless, Inc.
          4.1            Indenture, dated as of January 28, 1998, between PageMart
                            Wireless, Inc. and United States Trust Company of New
                            York, as Trustee, relating to the 11 1/4% Senior
                            Subordinated Discount Notes due 2008. (filed as an
                            exhibit to the Form 10-K of the Company for the fiscal
                            year ended December 31, 1997, and incorporated herein by
                            reference).
          4.2            Indenture, dated as of January 17, 1995, between PageMart
                            Wireless, Inc. and United States Trust Company of New
                            York, as Trustee, relating to the 15% Senior Discount
                            Notes due 2005. (filed as an exhibit to the Registration
                            Statement on Form S-1 of the Company (Reg. No. 33-91142),
                            and incorporated herein by reference).
          4.3            First Supplemental Indenture, dated as of December 31, 1997,
                            among PageMart Wireless, Inc. and United States Trust
                            Company of New York, as Trustee (filed as an exhibit to
                            the Form 8-K of the Company dated January 28, 1998, and
                            incorporated herein by reference).
         10.1            Warrant Agreement, dated as of October 19, 1993, between
                            PageMart, Inc. and United States Trust Company of New
                            York, as Warrant Agent, relating to the Warrants to
                            purchase Common Stock of the Company (filed as an exhibit
                            to the Form 10-K of the Company for the fiscal year ended
                            December 31, 1994, and incorporated herein by reference).
         10.2            Telecommunications Service Agreement, dated May 29, 1992,
                            between PageMart, Inc. and Wiltel, Inc. (filed as an
                            exhibit to the Registration Statement on Form S-1 of the
                            Company (Reg. No. 33-91142), and incorporated herein by
                            reference).
         10.3            Second Amended and Restated Satellite Services Supplemental
                            Agreement, dated as of July 1, 1998, between PageMart
                            Wireless, Inc. and AvData Systems, Inc.(1)
         10.4            Satellite Services and Space Segment Lease Agreement, dated
                            January 2, 1995, between PageMart, Inc. and SpaceCom
                            Systems, Inc. (filed as an exhibit to the Registration
                            Statement on Form S-1 of the Company (Reg. No. 33-91142),
                            and incorporated herein by reference).
</TABLE>
 
                                       E-1
<PAGE>   67
 
<TABLE>
<CAPTION>
        EXHIBIT
          NO.                               DESCRIPTION OF EXHIBIT
        -------                             ----------------------
<C>                      <S>
         10.5            Credit Agreement, dated as of March 23, 1999, by and among
                            PageMart Wireless, Inc., and the Lenders and Agents named
                            therein.
         10.6            Security Agreement, dated as of March 23, 1999, among
                            PageMart Wireless, Inc., and the Lenders and Agent named
                            therein.
         10.7            Pledge Agreement, dated as of March 23, 1999 among PageMart
                            Wireless, Inc. and the Lenders and Collateral Agent named
                            therein.
         10.8            Promissory Note and Security Agreement, dated May 21, 1997,
                            between PageMart, Inc. and Glenayre Electronics, Inc.
                            (filed as an exhibit to the Form 10-Q of the Company for
                            the quarter ended June 30, 1997, and incorporated herein
                            by reference).
         10.9            Modification and Reaffirmation Agreement, dated March 12,
                            1998, between PageMart Wireless, Inc. and Glenayre
                            Electronics, Inc. (filed as an exhibit to the Form 10-Q
                            of the Company for the quarter ended March 31, 1998, and
                            incorporated herein by reference).
         10.10           Amended and Restated Agreement Among Certain Stockholders of
                            PageMart Nationwide, Inc. dated as of September 19, 1995
                            (filed as an exhibit to the Form 8-K of the Company dated
                            October 6, 1995, and incorporated herein by reference).
         10.11           Amendment No. 1 to Amended and Restated Agreement Among
                            Certain Stockholders, dated as of October 1, 1997, among
                            PageMart Wireless, Inc. and certain of its stockholders
                            (filed as an exhibit to the Form 10-K of the Company for
                            the fiscal year ended December 31, 1997, and incorporated
                            herein by reference).
         10.12           Subscription Agreement dated as of July 7, 1995 among
                            PageMart Nationwide, Inc., PageMart Canada Holding
                            Corporation and TD Capital Group Ltd. (filed as an
                            exhibit to the Registration Statement on Form S-1 of the
                            Company (Reg. No. 33-03012), and incorporated herein by
                            reference).
         10.13           Agreement Among Stockholders among PageMart Nationwide,
                            Inc., PageMart International, Inc., TD Capital Group
                            Ltd., PageMart Canada Limited. (filed as an exhibit to
                            the Registration Statement on Form S-1 of the Company
                            (Reg. No. 33-03012), and incorporated herein by
                            reference).
         10.14           Equipment Purchase Agreement, dated as of January 26, 1996,
                            between Motorola, Inc. and PageMart Wireless, Inc. (filed
                            as an exhibit to the Form 10-K of the Company for the
                            fiscal year ended December 31, 1995, and incorporated
                            herein by reference)(1).
         10.15           Technology Asset Agreement, dated as of December 1, 1995,
                            between Motorola, Inc. and PageMart Wireless, Inc. (filed
                            as an exhibit to the Form 10-K of the Company for the
                            fiscal year ended December 31, 1995, and incorporated
                            herein by reference)(1).
         10.16           PageMart Wireless, Inc. Employee Stock Purchase Plan (filed
                            as an exhibit to the Registration Statement on Form S-1
                            of the Company (Reg. No. 33-03012), and incorporated
                            herein by reference).
         10.17           PageMart Wireless, Inc. Nonqualified Formula Stock Option
                            Plan for Non-Employee Directors. (filed as an exhibit to
                            the Registration Statement on Form S-1 of the Company
                            (Reg. No. 33-03012), and incorporated herein by
                            reference).
</TABLE>
 
                                       E-2
<PAGE>   68
 
<TABLE>
<CAPTION>
        EXHIBIT
          NO.                               DESCRIPTION OF EXHIBIT
        -------                             ----------------------
<C>                      <S>
         10.18           Office Lease Agreement, dated as of November 26, 1996,
                            between Crescent Real Estate Equities Limited and
                            PageMart Wireless, Inc. (filed as an exhibit to the
                            Company's Annual Report on Form 10-K for the fiscal year
                            ended December 31, 1996, and incorporated herein by
                            reference).
         10.19           PageMart Wireless, Inc. Fifth Amended and Restated 1991
                            Stock Option Plan (filed as an exhibit to the definitive
                            proxy statement of the Company dated April 18, 1997, and
                            incorporated herein by reference).
         10.20           Severance and Reimbursement Agreement, dated September 12,
                            1997, between PageMart Wireless, Inc. and N. Ross
                            Buckenham (filed as an exhibit to the Form 10-Q of the
                            Company for the quarter ended September 30, 1997, and
                            incorporated herein by reference).
         10.21           Resale Agreement, dated September 1, 1998, between PageMart
                            Wireless, Inc. and GTE Communications System
                            Corporation.(1)
         10.22           Strategic Alliance Agreement No. 1, dated September 15,
                            1994, between GTE Service Corporation and PageMart, Inc.
                            (filed as an exhibit to the Registration Statement on
                            Form S-1 of the Company (Reg. No. 33-91142), and
                            incorporated herein by reference).
         10.23           Strategic Alliance Agreement No. 2, dated October 13, 1994,
                            between GTE Service Corporation and PageMart, Inc. (filed
                            as an exhibit to the Form 10-K of the Company for the
                            fiscal year ended December 31, 1994, and incorporated
                            herein by reference).
         10.24           Resale Agreement, dated as of December 12, 1997, between
                            PageMart Wireless, Inc. and GTE Communications
                            Corporation (filed as an exhibit to the Form 10-K of the
                            Company for the fiscal year ended December 31, 1997, and
                            incorporated herein by reference).(1)
         10.25           Third Amended and Restated 1991 Stock Issuance Plan (filed
                            as an exhibit to the Registration Statement on Form S-8
                            (Reg. No. 33-98116), and incorporated herein by
                            reference).
         10.26           Resale Agreement between GTE MobileNet Service Corp.,
                            licensee and PageMart, Inc., licensor dated July 1, 1996
                            (filed as an exhibit to the Form 10-K of Company for the
                            fiscal year ended December 31, 1997, and incorporated
                            herein by reference).(1)
         11.1            Computation of per share earnings (loss) for the three
                            months ended December 31, 1998.
         11.2            Computation of per share earnings (loss) for the three
                            months ended December 31, 1997.
         11.3            Computation of per share earnings (loss) for the three
                            months ended December 31, 1996.
         11.4            Computation of per share earnings (loss) for the year ended
                            December 31, 1998.
         11.5            Computation of per share earnings (loss) for the year ended
                            December 31, 1997.
         11.6            Computation of per share earnings (loss) for the year ended
                            December 31, 1996.
</TABLE>
 
                                       E-3
<PAGE>   69
 
<TABLE>
<CAPTION>
        EXHIBIT
          NO.                               DESCRIPTION OF EXHIBIT
        -------                             ----------------------
<C>                      <S>
         12.1            Computation of Ratio of Earnings to Fixed Charges for years
                            ended December 31, 1993, 1994, 1995, 1996, 1997 and 1998
                            and the three months ended December 31, 1998.
         21.1            PageMart Wireless, Inc. Subsidiaries.
         23.1            Consent of Arthur Andersen LLP.
         27.1            Financial Data Schedule for the year ended December 31,
                            1998.
</TABLE>
 
- ---------------
 
(1) The Company has requested confidential treatment for certain portions of
    this agreement.
 
                                       E-4

<PAGE>   1
                                                                    EXHIBIT 3.5

                                                    STATE OF DELAWARE
                                                   SECRETARY OF STATE
                                                 DIVISION OF CORPORATIONS
                                                 FILED 08:00 AM 01/28/1998
                                                   981032906 - 2456424


                         -----------------------------

                       CERTIFICATE OF OWNERSHIP AND MERGER
                                    MERGING
                                 PAGEMART, INC.
                                      INTO
                            PAGEMART WIRELESS, INC.

                         -----------------------------

                           Pursuant to Section 253 of the
                  General Corporation Law of the State of Delaware

                         -----------------------------

         PageMart Wireless, Inc. ("PARENT"), a corporation organized and
existing under the General Corporation Law of the State of Delaware (the
"GENERAL CORPORATION LAW"), does hereby certify that:

         FIRST: PageMart, Inc., a Delaware corporation (the, "COMPANY"), was
incorporated on May 8, 1989, pursuant to the General Corporation Law and is
existing thereunder.

         SECOND: Parent was incorporated on November 29, 1994, pursuant to the
General Corporation Law and is existing thereunder.

         THIRD: Parent owns of record 100% of the outstanding shares of Common
Stock (the "SHARES") of the Company, the Sharer, being the only stock of the
Company outstanding.

         FOURTH: At a meeting of the board of directors held on November 13,
1997, the board of directors of Parent adopted the following resolutions
providing for the merger (the "MERGER") of the Company into Parent, which
resolutions have not been amended or rescinded and are in full force and
effect:

                   RESOLVED, that pursuant to Section 253 of the General
         Corporation Law of the State of Delaware, Pagemart, Inc. ("PAGEMART")
         shall be merged with and into the Corporation (the "MERGER"),
         whereupon the separate existence of PageMart shall cease, and the
         Corporation shall be the Surviving Corporation (the "SURVIVING
         CORPORATION");





<PAGE>   2








                   RESOLVED, that the Merger is hereby approved pursuant to the
         provisions of Section 253 of the General Corporation Law of the State
         of Delaware;

                   RESOLVED, that the Merger shall become effective upon filing
         of the Certificate of Ownership and Merger (the "EFFECTIVE TIME");
         provided, however that the Merger shall not become effective until such
         time as (a) PageMart shall have consummated its tender offer for, and
         solicitation of consents to permit the Merger and the Note Issuance
         (as defined below) from the holders of, its 12 1/4% Senior Discount
         Notes due 2003, (b) the Corporation shall have consummated its
         solicitation of consents to permit the Merger and the Note Issuance
         (as defined below) from the holders of its 15% Senior Discount
         Exchange Notes due 2005, (c) the Revolving Credit Agreement with BT
         Commercial Corporation, as Agent, and Bankers Trust Company, as Issuing
         Bank shall have been amended to permit the Merger and the Note
         Issuance (as defined below); (d) the consent of the Federal
         Communication Commission with respect to the transfer in the Merger of
         the communication licenses held by PageMart or its Subsidiaries shall
         have been obtained, (e) the Corporation shall have received all other
         consents or approvals necessary to permit the Merger or Note Issuance
         other than those that the failure to receive would not have a material
         adverse effect on the Corporation and (f) Morgan Stanley & Co.
         Incorporated shall have advised the Board of Directors of the
         Corporation that all conditions (other than the Merger) to the
         issuance of the Corporation's Senior Discount Notes due 2007 (the
         "NOTE ISSUANCE") shall have been satisfied or waived;

                   RESOLVED, that at the Effective Time each share of common
         stock, par value $.0001 per share, of PageMart outstanding immediately
         prior to the Effective Time be retired;

                   RESOLVED, that from and after the Effective Time, until
         successors are duly elected or appointed in accordance with applicable
         law, the directors of the Corporation at the Effective Time shall be
         the directors of the Surviving Corporation, and the officers the
         Corporation of at the Effective Time shall be the officers of the
         Surviving Corporation;

                   RESOLVED, that from and after the Effective Time, the name
         of the Surviving Corporation shall be "PageMart Wireless, Inc.";

                   RESOLVED, that from and after the Effective Time, the bylaws
         and certificate of incorporation of the Corporation shall be the
         bylaws and certificate of incorporation of the Surviving Corporation;
         and



                                       2



<PAGE>   3








                   RESOLVED, that the officers of the Corporation are, and each
         of them hereby is, authorized and directed to take or cause to be
         taken all such further actions, and to execute and deliver or cause to
         be delivered all such further instruments and documents in the name and
         on behalf of the Corporation (including, without limitation, a
         Certificate of Ownership and Merger in the form approved by counsel
         for the Corporation) and to incur all such fees and expenses, all as
         in their judgment they deem necessary or advisable in order to carry
         into effect each of the foregoing resolutions, and that the actions of
         any officer of the Corporation authorized by the foregoing resolutions
         or which would have been authorized by the foregoing resolutions
         except that such actions were taken prior to the adoption of such
         resolutions be, and they hereby are, ratified, confirmed, approved and
         adopted as actions of the Corporation.



                                       3

<PAGE>   4








                   IN WITNESS WHEREOF, PageMart Wireless, Inc. has caused this
         Certificate of Ownership and Merger to be executed in its corporate
         name by its duty authorized officer this 28th day of January, 1998.

                                         PAGEMART WIRELESS, INC.

                                         By: /s/  G. CLAY MYERS
                                             ---------------------------------
                                            Name: G. Clay Myers
                                            Title: Vice President Finance,
                                                   Chief Financial Officer and
                                                   Treasurer



                                       4

<PAGE>   1

                                                                   EXHIBIT 10.3

                          SECOND AMENDED AND RESTATED
                   SATELLITE SERVICES SUPPLEMENTAL AGREEMENT


         THIS SECOND AMENDED AND RESTATED SATELLITE SERVICES SUPPLEMENTAL
AGREEMENT (this "Agreement") is made and entered into as of July 1, 1998 (the
"Execution Date") by and between AvData Systems, Inc., a Delaware corporation
("AvData"), whose principal place of business is located at 55 Marietta Street,
NW, Atlanta, Georgia 30303, and PageMart Wireless, Inc., a Delaware corporation
(the "Customer" or "PageMart") with offices at 3333 Lee Parkway, Suite 100,
Dallas, Texas 75219.

                                    RECITALS

         WHEREAS, AvData and PageMart, Inc. are parties to an Amended and
Restated Satellite Services Supplemental Agreement, dated as of December 18,
1997 (the "Existing SSS Agreement"), concerning the purchase of certain
satellite services;

         WHEREAS, Customer and AvData have entered into an Amended and Restated
Master Agreement dated December 18, 1997 ("Master Agreement");

         WHEREAS, this Agreement is independent of the Master Agreement, and
all of the parties' rights and obligations hereunder shall continue in full
force and effect notwithstanding any termination of, or default by either party
under, the Master Agreement;

         WHEREAS, as a result of a Satellite Capacity Failure, the Satellite
Capacity with respect to the Galaxy IV Satellite was terminated pursuant to
Section K.1.a of the Existing Agreement;

         WHEREAS, AvData continues to lease certain Ku-band satellite
transponder capacity on GE-1, a satellite operated by GE Americom
Communications, Inc. ("GE"), and has secured additional Ku-band transponder
capacity on other satellites operated by GE, and Customer desires to purchase
from AvData and AvData is willing to provide to Customer, a portion of such
satellite transponder capacity for use in the VNI Network; and

         WHEREAS, the parties desire to amend and restate the Existing SSS
Agreement to reflect the termination of capacity on Galaxy IV and the addition
of new capacity on satellites operated by GE.

                                   AGREEMENT

         NOW, THEREFORE, in consideration of the premises, and other good and
valuable consideration received and acknowledged, AvData and Customer agree as
follows:

         During the Satellite Services Term, AvData shall provide Customer's
Satellite Capacity in accordance with, and Customer shall be bound by, the
terms and conditions set forth below:

A.       SATELLITE SERVICES TERM:

1.       "Commencement Date": 12:00 a.m. (Eastern Time) on July 1, 1998.

2.       "Termination Date": 11:59 p.m. (Eastern Time) on July 31, 2003, unless
         earlier terminated pursuant to this Agreement.

B. CUSTOMER'S SATELLITE CAPACITY: AvData shall provide satellite transponder
capacity for the VNI Network according to the terms hereof. From the
Commencement Date through the Termination Date Customer's Satellite Capacity
shall be provided through Ku-band transponder capacity leased by AvData on
Satellite(s) in accordance with Schedule 1 attached hereto.

         C. PRICE: Customer shall pay to AvData a monthly satellite capacity
         payment for Customer's Satellite Capacity, in accordance with Section
         J below and Schedule 1 hereto. To the extent AvData receives credits
         from the Satellite Operator by reason of service interruption
         affecting the


            Second Amended and Restated Satellite Services Agreement
Page 1                 AvData Systems, Inc - Proprietary



<PAGE>   2

                          SECOND AMENDED AND RESTATED
                   SATELLITE SERVICES SUPPLEMENTAL AGREEMENT

         Satellite Capacity provided hereunder for a period of one (1) hour or
         more (measured from the AvData receives notice thereof from Customer),
         AvData agrees to promptly credit Customer with credits provided by the
         Satellite Operator for such interruption. The credit shall be equal to
         a pro rata portion (based on total bandwidth of the Satellite Capacity
         contracted for by Customer on the Satellite compared to total
         bandwidth of the Satellite Capacity contracted for by AvData for its
         own or third party use on the Satellite) of all amounts credited by
         the Satellite Operator to AvData with respect to any interruption in
         service. AvData will apply the credit promptly to any outstanding
         invoice between AvData and Customer under this Agreement or any other
         agreement between AvData and Customer, as selected by AvData in its
         sole discretion.


D. DEPOSIT: The parties acknowledge that Customer has previously paid AvData a
non-refundable satellite services deposit, which has been retained by AvData in
consideration for the modifications contained in the Existing SSS Agreement.
PageMart acknowledges that it is not entitled to a set-off against any
financial obligations with respect to such payment.

E.       CERTAIN DEFINITIONS

1.       "Affiliates" shall mean, with respect to any Person, any other Person
         directly or indirectly controlling, controlled by or under common
         control (i.e., the power to direct affairs by reason of ownership of
         voting stock, by contract or otherwise) with such Person and any
         member, director, officer or employee of such Person.

2.       "FCC" shall mean the Federal Communications Commission or any
         successor organization.

3.       "Satellite(s)" shall mean SN-4, G-3R and GE-1, through which AvData
         will provide Customer's Satellite Capacity.

4.       "Laws" shall mean all international, federal, state, local and other
         laws, rules and other regulations, including, without limitation,
         those issued by the FCC.

5.       "Person" shall mean any person or entity, whether an individual,
         trustee, corporation, general partnership, limited partnership, trust,
         unincorporated organization, business association, firm, joint
         venture, governmental agency or authority, or otherwise.

6.       "Transponder(s)" shall mean a component of the Satellite(s) which, for
         a particular frequency band, receives, amplifies, translates frequency
         and retransmits radio signals. Each Transponder contains one traveling
         wave tube amplifier (a "TWTA"). Transponder shall also mean, for
         purposes of this definition, any replacement or alternate components
         thereof.

7.       "Satellite Capacity Failure" shall mean the failure of AvData to
         provide Customer's aggregate Satellite Capacity on a Satellite(s) (due
         to a Satellite or Transponder failure, including relocation of orbital
         position by FCC order). Determination that a Satellite Capacity
         Failure has occurred shall be made by AvData in its sole discretion.

8.       "Usage" or "Use" shall refer to radio transmission to, or utilization
         of, the Satellite(s) for the VNI Network.

9.       "Satellite Operators" shall mean the owner(s) of the Satellite(s)
         specifically authorized by the FCC to operate the Satellite(s) and
         through whom AvData makes available the satellite capacity required
         for the VNI Network.

10.      "Primary Hub" shall mean the Equipment at AvData's primary hub
         location in Atlanta, Georgia which will be used to access Customer's
         Satellite Capacity to run the VNI Network.

11.      "Alternate Hub" shall mean the equipment PageMart sets up at a site to
         be determined which will be used to access Customer's Satellite
         Capacity to run the VNI Network for load sharing with, or failure of,
         the Primary Hub.

12.      "Customer's Satellite Capacity" shall mean the satellite capacity to
         be provided hereunder to Customer (expressed as SCUs or High Power
         SCUs) during the Satellite Services Term, as more particularly


            Second Amended and Restated Satellite Services Agreement
Page 2                 AvData Systems, Inc - Proprietary

<PAGE>   3

                          SECOND AMENDED AND RESTATED
                   SATELLITE SERVICES SUPPLEMENTAL AGREEMENT

         described in Paragraph J.2. hereof and Schedule 1 hereto. In addition,
         if PageMart requests additional satellite capacity as described in
         Schedule 1 hereto, subject to availability of such satellite capacity,
         such additional satellite capacity shall be included upon commencement
         of service for such satellite capacity.

13.      "Equipment" shall mean the Very Small Aperture Satellite Terminals
         (VSATs) and associated hub hardware and remote site hardware including
         embedded software provided by AvData under the Master Agreement.

14.      "Satellite Capacity Unit" or "SCU" - One SCU equals 800 kHz of
         bandwidth, which is normally configured as one (1) 128 Kbps outbound
         channel and two (2) 64 Kbps inbound channels. Using standard power
         levels and BPSK modulation, the percentage of available bandwidth in
         the transponder that is utilized by a SCU is equal to the percentage
         of the power available in the transponder utilized by that SCU.

15.      "High Power SCU" - One High Power SCU consumes twice the satellite
         capacity of one standard power SCU. Using high power levels and BPSK
         modulation, the percentage of available power in the transponder that
         is utilized by a High Power SCU is equal to two (2) times the
         percentage of available bandwidth in the transponder that is utilized
         by a SCU. A High Power SCU has a power density of not less than 9
         dBW/4KHz and requires authorization from the FCC.

16.      "VNI" or "VNI Network" shall mean the VSAT network infrastructure
         consisting of the Equipment and software provided by AvData under the
         Master Agreement.

17.      "GE-1 Satellite" shall mean a communications satellite owned and
         operated by GE and positioned at 103(Degree) west longitude orbital
         position.

18.      "SN-4 Satellite" shall mean a communications satellite owned and
         operated by GE and positioned at 101 degrees W. L. orbital position.
         All references herein to the SN-4 Satellite shall be deemed to refer
         to the GE-4 communications satellite currently scheduled to be
         launched into geostationary orbit by GE during the second quarter of
         1999 after AvData transitions its current capacity on SN-4 to GE-4.

19.      "G-3R Satellite" shall mean a communications satellite owned and
         operated by PanAmSat and positioned at 95(Degree) west longitude
         orbital position. G-3R may be preempted in the event of a Satellite
         Capacity Failure of Galaxy 7 or Galaxy 8 (satellites owned and
         operated by PanAmSat).

F.       CERTAIN UNDERSTANDINGS

         1. Ownership of Transponders. Customer understands and agrees that the
Satellite Operators are the FCC-authorized operators of the Satellites. Neither
this Agreement nor the provision of Customer's Satellite Capacity hereunder
shall, or shall be deemed to, convey title or any other ownership interest to
Customer in or to any Satellite, any Transponder or any part thereof. Customer
acknowledges and agrees (i) that nothing contained in this Agreement shall
prevent any sale, mortgage, or encumbrance of any Satellite or any Transponder
thereof by the owner, (ii) that Customer's Satellite Capacity is provided on a
right to use basis (with Equipment and services provided by AvData under the
Master Agreement) and is not being sold to Customer, and (iii) that neither any
Transponder nor any Satellite, nor any right to use thereof nor any interest of
any type therein, shall be subject to any claim, prior, subsequent or
otherwise, of Customer or its creditors as a result of this Agreement.
Notwithstanding the foregoing, AvData shall use reasonable efforts to provide
that the foregoing restrictions shall not impact or interfere with Customer's
use of Customer's Satellite Capacity as provided for herein.

         2. Control of Satellite. Customer understands and agrees that the
Satellite Operator(s) shall control and provide for the operation of the
Satellite(s).

         3. Communication with Satellite. All communications with the
Satellite(s) will be provided through Equipment controlled by AvData at either
the Primary Hub or Alternate Hub; provided, however, upon the prior written
request of Customer, AvData shall use its reasonable efforts to obtain the
consent of each Satellite Operator to permit Customer to exercise control of
the Equipment at the Alternate Hub, and


            Second Amended and Restated Satellite Services Agreement
Page 3                 AvData Systems, Inc - Proprietary


<PAGE>   4

                          SECOND AMENDED AND RESTATED
                   SATELLITE SERVICES SUPPLEMENTAL AGREEMENT

upon obtaining such consent(s), Customer shall have the right to make
communications with the Satellite(s) through Equipment controlled by Customer
or its nominee at the Alternate Hub.

G.       CONTINUITY OF SERVICE

         1. Preemption/Interruption of Service. Customer recognizes and agrees
with respect to each Satellite that for technical or safety reasons, which
shall include, but shall not be limited to, (1) the protection of the overall
health or performance of the Satellite or its Transponders; (2) the prevention
of interference or cross-talk; (3) the protection of public safety; or (4)
compliance with an order from the FCC or other governmental authorities - and
the existence of which the Satellite Operator shall determine in its sole
discretion - the Satellite Operator may take the following actions: (i) preempt
or interfere with Customer's Use of any Transponder or other component of the
Satellite, (ii) reassign TWTAs to different Transponders on the Satellite, or
(iii) reassign the frequency assignment of Customer's Satellite Capacity.
Customer acknowledges and agrees that any such action by Satellite Operator may
result in the preemption or interruption of the Use of Customer's Satellite
Capacity. AvData shall notify Customer as soon as reasonably practical after
receipt by AvData of oral or written notice from the Satellite Operator
concerning any such action and shall use reasonable efforts to cause the
Satellite Operator to schedule and conduct such action so as to minimize the
Satellite Operator disruption of Customer's Use of Customer's Satellite
Capacity. Customer acknowledges and agrees that if such preemption or
interruption occurs, then Customer shall cooperate with and assist AvData and
the Satellite Operator during such periods and Customer's sole remedies shall
be any credits provided pursuant to Section C herein and, in the case of a
Satellite Capacity Failure, the termination of this Agreement or reduction in
Customer's Satellite Capacity pursuant to Paragraph K herein.

         2. Provision of Continuing Service. In the event of a Satellite
Capacity Failure, AvData shall use its best efforts to cause the Satellite
Operator to provide Customer's Satellite Capacity using spare Transponder
capacity on the Satellite, if available, or if such spare capacity is
unavailable, then by using an alternate Transponder on the Satellite of the
same polarity, if available. The availability of such spare or alternate
Transponder on the Satellite, on a permanent or temporary basis, shall be
determined by the Satellite Operator in its sole discretion. The foregoing
notwithstanding, Customer's sole remedies for any preemption of Use shall be
any credits provided pursuant to Section C herein and, in the case of a
Satellite Capacity Failure, the termination of this Agreement or reduction in
Customer's Satellite Capacity pursuant to Paragraph K herein.


H.       CUSTOMER'S OBLIGATIONS

         1. Compliance With Agreement and Laws. During the Satellite Services
Term, Customer shall comply with the terms of this Agreement and shall be
responsible for complying with, and shall comply with all Laws applicable to it
regarding the operation and Use of the Satellites and the Transponders and
regarding Use of Customer's Satellite Capacity. Customer shall be permitted to
use Customer's Satellite Capacity for any business unit, subsidiary, Strategic
Alliance Partner or customer of PageMart subject to the approval of AvData,
which shall not be unreasonably withheld, provided, however, operation of the
Equipment provided under the Master Agreement or any other equipment used to
access Customer's Satellite Capacity, including PageMart's Alternate Hub, must
be in strict accordance with guidelines and instructions provided by the
Satellite Operator directly or through AvData.

I.       REMEDIES

         1. Limitation of Liability

         a. ANY AND ALL EXPRESS AND IMPLIED WARRANTIES INCLUDING, BUT NOT
LIMITED TO, WARRANTIES OF MERCHANTABILITY OR FITNESS FOR ANY PURPOSE OR USE,
ARE EXPRESSLY EXCLUDED AND DISCLAIMED BY AVDATA. CUSTOMER EXPRESSLY AGREES THAT
AVDATA'S SOLE OBLIGATIONS AND CUSTOMER'S EXCLUSIVE REMEDIES FOR ANY CAUSE
WHATSOEVER (INCLUDING, WITHOUT LIMITATION, LIABILITY ARISING


            Second Amended and Restated Satellite Services Agreement
Page 4                AvData Systems, Inc - Proprietary

<PAGE>   5

                          SECOND AMENDED AND RESTATED
                   SATELLITE SERVICES SUPPLEMENTAL AGREEMENT

FROM NEGLIGENCE) ARISING OUT OF OR RELATING TO THIS AGREEMENT AND/OR THE
TRANSACTIONS CONTEMPLATED HEREBY AND THEREBY ARE LIMITED TO TERMINATION OF THIS
AGREEMENT FOR THE REASONS DESCRIBED IN PARAGRAPH G ABOVE, AND ALL OTHER
REMEDIES OF ANY KIND ARE EXPRESSLY EXCLUDED.

         b. IN NO EVENT SHALL AVDATA BE LIABLE FOR ANY INCIDENTAL OR
CONSEQUENTIAL DAMAGES, WHETHER FORESEEABLE OR NOT, OCCASIONED BY ANY DEFECT IN
CUSTOMER'S SATELLITE CAPACITY, FAILURE OF THE CUSTOMER'S SATELLITE CAPACITY TO
PERFORM OR ANY OTHER CAUSE WHATSOEVER. AVDATA MAKES NO WARRANTY, EXPRESS OR
IMPLIED, TO ANY OTHER PERSON CONCERNING CUSTOMER'S SATELLITE CAPACITY AND
CUSTOMER SHALL INDEMNIFY AVDATA FROM ANY CLAIMS MADE UNDER ANY WARRANTY OR
REPRESENTATION BY CUSTOMER TO ANY THIRD PARTY.

         2. Indemnification. Customer shall indemnify and save AvData and the
Satellite Operators harmless from all liability disclaimed by AvData, as
specified above, to the extent such liability arises in connection with the
provision by AvData or the Satellite Operators of facilities and/or Customer's
Satellite Capacity or use of Customer's Satellite Capacity pursuant to this
Agreement provided, however, Customer shall not be obligated to indemnify
AvData from such liability to the extent such liability arises from the willful
misconduct or gross negligence of AvData.

J.       PAYMENTS TO AVDATA

         1. Payment.

         a. Unless otherwise provided, any sum due AvData for the provision of
Customer's Satellite Capacity shall be invoiced and payable in advance on the
first day of each month.

         b. If any payment of any sum due from Customer is not received by
AvData within thirty (30) days after such payment is due, then such overdue
amount shall be subject to a delinquency charge at the rate of interest equal
to one and one-half percent (1 1/2%) per month, from the date such overdue
amount was actually due until the date it is actually received by AvData.

         c. Customer's obligations to make the monthly satellite capacity
payments provided by Paragraph C above and J(2) below shall be absolute and
unconditional and shall not be affected by any circumstances, including,
without limitation, any setoff, counterclaim, recoupment, defense or other
right which Customer may have against AvData or anyone else for any reason
whatsoever.

         d. The charges specified herein do not include any amounts for sales,
use, property, privilege, license, excise or similar taxes, fees or assessments
which may be levied by any governmental agency on this Agreement, the services
provided or the payments made hereunder. Any such taxes or charges shall be
paid directly by Customer to the taxing authority, if legally permitted.
Otherwise, if required to be paid by AvData, the amount shall be reimbursed to
AvData by the Customer. Upon request, the Customer shall provide AvData with
tax exemption certificates, if applicable, or evidence of tax payments, if made
by Customer.

2.       Required Satellite Capacity.

         a. Commencing July 1, 1998, PageMart shall pay [*] per month per
Satellite Capacity Unit ("SCU") for satellite capacity on GE-1 Satellite and
[*] per month per SCU for satellite capacity on SN-4 Satellite in accordance
with Schedule 1 hereto. PageMart shall have the right to designate by written
notice by PageMart that a portion of Customer's Satellite Capacity, not to
exceed [*] SCUs (i.e., [*] High Power SCUs) on either GE-1 or SN-4, shall be
provided as High Power SCUs. The provision of Customer's Satellite Capacity as
High Power SCUs on either GE-1 or SN-4 shall be subject to availability of High
Power SCUs on the Satellite(s) and regulatory approval by the FCC. Upon receipt
of such written


            Second Amended and Restated Satellite Services Agreement
Page 5                AvData Systems, Inc - Proprietary



*  CONFIDENTIAL INFORMATION HAS BEEN DELETED. THE OMITTED MATERIAL HAS BEEN 
   FILED SEPARATELY WITH THE COMMISSION PURSUANT TO AN APPLICATION FOR 
   CONFIDENTIAL TREATMENT.

<PAGE>   6

                          SECOND AMENDED AND RESTATED
                   SATELLITE SERVICES SUPPLEMENTAL AGREEMENT

notice, AvData shall pursue such regulatory approval on a "best efforts" basis,
at PageMart's sole cost and expense. One (1) High Power SCU shall count as two
(2) SCUs for the purpose of the above calculations.

         b. AvData shall use commercially reasonable efforts to resell any SCUs
(in increments of 1/4 SCUs, or 200 kHz) that PageMart specifies in writing to
AvData to resell; provided, however, that PageMart in such written notice
irrevocably releases the SCUs for the duration of this SSS Agreement. PageMart
shall be required to continue to pay for the SCUs until such time, if any, as
AvData is able to resell the SCUs, as set forth below in Paragraph J(2)(c).

         c. AvData shall reduce PageMart's minimum monthly payments in the
amount of [*] for each [*] SCU that AvData resells on GE-1or [*] for each [*]
SCU that AvData resells on SN-4; provided, however, that AvData resells such
SCU at a rate equal or greater than [*] per [*] SCU that AvData resells on
GE-1or [*] for each [*] SCU that AvData resells on SN-4. AvData shall be
permitted to receive payments for such resold SCUs directly from the purchaser.

         d. AvData further agrees not to purchase additional satellite capacity
for its own use from the time that PageMart gives AvData written notice of
released satellite capacity pursuant to Paragraph J(2)(b) above if AvData
determines, in its reasonable discretion, that AvData's satellite capacity
needs can be reasonably satisfied from PageMart's released satellite capacity,
and in such event AvData shall reduce PageMart's minimum monthly payments for
satellite capacity by [*] for each [*] SCU that AvData that uses on GE-1or [*]
for each [*] SCU that AvData uses on SN-4.

K.       TERMINATION

         1. Events of Termination. This Agreement shall terminate automatically
upon the Termination Date, unless terminated earlier pursuant to one of the
following paragraphs:

         a. Termination for Satellite Capacity Failure. If a Satellite Capacity
Failure continues uninterrupted for more than five (5) consecutive days, or
such other period is mutually agreed upon in writing by AvData and Customer,
then this Agreement may be immediately terminated by either party by written
notice to the other delivered on or before the thirtieth day after the calendar
day on which the Satellite Capacity Failure began; provided, however, that if
such Satellite Capacity Failure affects only one Satellite and a portion of
Customer's Satellite Capacity remains available from other Satellite(s), then
the right of termination shall apply only to Customer's Satellite Capacity
received hereunder from such failed Satellite and this Agreement shall continue
in force with respect to the remaining portion of Customer's Satellite
Capacity. If so terminated, AvData shall refund to Customer the amount of any
prepaid monthly charges for the terminated capacity prorated from the date of
the Satellite Capacity Failure, and AvData shall have no other or further
liability to Customer.

         b. Cancellation for Non-Payment and Violations of Law. Notwithstanding
anything to the contrary and in addition to all other remedies AvData may have,
AvData may immediately cancel this Agreement and accelerate all remaining
payments due through July 31, 2003 if Customer materially breaches any
provision of this Agreement, including for example (but without limitation),
(1) if Customer fails to pay when due any amounts due pursuant to this
Agreement within ten (10) days after AvData has delivered notice to Customer of
such non-payment, or (2) if Customer violates the provisions of Paragraph H.1.
("Compliance with Laws"). Upon termination, pursuant to this Paragraph K.1.b,
AvData shall be entitled to transfer Customer's Satellite Capacity immediately
to whomever AvData sees fit, Customer shall not be entitled to any equitable
relief as a result thereof, and Customer's exclusive remedy shall be limited to
recovery of any payments made by it to AvData for the period of time as to
which it has been canceled, without interest, less any claim AvData has against
Customer by reason of such Customer's default.

         c. Termination by Customer. In event that AvData fails to provide
Customer's Satellite Capacity to Customer as a result of the termination by a
Satellite Operator of the lease to AvData of Ku-Band satellite transponder
capacity due to a default by AvData, Customer, provided that Customer is not in
default hereunder, shall have the right to reduce Customer's Satellite Capacity
under this Agreement to the extent of the Customer's Satellite Capacity
received hereunder from such Satellite Operator if AvData fails to cure such
failure within thirty (30) days after receiving written notice of such failure
from Customer. If


            Second Amended and Restated Satellite Services Agreement
Page 6                AvData Systems, Inc - Proprietary



*  CONFIDENTIAL INFORMATION HAS BEEN DELETED. THE OMITTED MATERIAL HAS BEEN 
   FILED SEPARATELY WITH THE COMMISSION PURSUANT TO AN APPLICATION FOR 
   CONFIDENTIAL TREATMENT.

<PAGE>   7

                          SECOND AMENDED AND RESTATED
                   SATELLITE SERVICES SUPPLEMENTAL AGREEMENT

Customer's Satellite Capacity is so reduced, AvData shall (i) refund to
Customer the amount of any prepaid monthly charges for the terminated
Customer's Satellite Capacity prorated from the date AvData failed to provide
such Customer's Satellite Capacity and (ii) provide reasonable cooperation, at
Customer's request and expense, with any efforts by Customer to contract
directly with the Satellite Operator for such terminated Customer's Satellite
Capacity, and AvData shall have no other or further liability to Customer with
respect to such terminated Customer's Satellite Capacity.

         2. Continuation after Termination of Master Agreement. The parties
acknowledge and agree that this Agreement is a separate, free standing contract
and is independent of the Master Agreement. This Agreement, and the parties
rights and obligations hereunder, shall continue in full force and effect
notwithstanding any termination of, or default by either party under, the
Master Agreement.


L.       MISCELLANEOUS

         1. Headings. The Paragraph headings used in this Agreement, except
where terms are specifically defined, are for reference and convenience only
and shall not enter into the interpretation hereof.

         2. Waiver. No delay or omission by either party to exercise any right
or power shall impair any such right or power or be construed to be a waiver
thereof. A waiver by either of the parties of any of the covenants, conditions
or agreements to be performed by the other or any breach thereof shall not be
construed to be a waiver of any succeeding breach thereof or of any other
covenant, condition or agreement herein contained.

         3. Severability. If, but only to the extent that, any provision of
this Agreement is declared or found to be illegal, unenforceable or void, then
both parties shall be relieved of all obligations arising under such provision,
it being the intent and agreement of the parties that this Agreement shall be
deemed amended by modifying such provision to the extent necessary to make it
legal and enforceable while preserving its intent. If that is not possible,
another provision that is legal and enforceable and achieves substantially the
same objective shall be substituted. If the remainder of this Agreement is not
affected by such declaration or finding and is capable of substantial
performance then the remainder shall be enforced to the extent permitted by
law.

         4. Relationship of Parties. AvData is performing pursuant to this
Agreement only as an independent contractor and nothing set forth in this
Agreement shall be construed to create the relationship of principal and agent
between AvData and Customer. Neither AvData nor Customer shall act or attempt
to act or represent itself, directly or by implication, as an agent of the
other party or its Affiliates or in any manner assume or create, or attempt to
assume or create, any obligation on behalf of, or in the name of, the other
party or its Affiliates.

         5. Approvals and Authorizations. The obligations of the parties hereto
shall be subject to obtaining and maintaining all necessary regulatory and
other governmental approvals and authorizations. The parties agree to use their
respective and, where applicable, collective best reasonable efforts to obtain
promptly and maintain any such approvals.

         6. Notices. In addition to such other requirements as may be set forth
herein, any notices hereunder by one party to the other party shall be given in
writing by personal delivery (or by recognized overnight delivery service) or
posted by certified mail return receipt requested, to the parties at the
following addresses:

         IF AVDATA, SEND TO:                  IF CUSTOMER, SEND TO:
         AvData Systems, Inc.                 PageMart Wireless, Inc.
         55 Marietta Street                   3333 Lee Parkway, Suite 100
         Atlanta, GA  30303                   Dallas, TX   75219

         Attn:  Judith H. Drobinski           Attn:  James E. Freytag
         V.P. - Finance & Admin.              Director of Network Implementation


            Second Amended and Restated Satellite Services Agreement
Page 7                AvData Systems, Inc - Proprietary


<PAGE>   8

                          SECOND AMENDED AND RESTATED
                   SATELLITE SERVICES SUPPLEMENTAL AGREEMENT

Notices will be deemed to have been given hereunder when delivered (whether or
not accepted by the addressee).

         7. Confidentiality. Each party hereby agrees that all non-public,
confidential or proprietary information communicated to it by the other party
or its customers, whether before or after the Execution Date, shall be and was
received in strict confidence, shall be used only for purposes of this
Agreement, and, for a period of five (5) years following the termination of
this Agreement, shall not be disclosed by such party, its agents or employees
without the prior written consent of the other party, except as may be
necessary by reason of legal, accounting or regulatory requirements beyond the
reasonable control of the disclosing party. The obligations set forth in this
Section shall survive termination of this Agreement.

         8. Force Majeure. The term "Force Majeure" shall include, but not be
limited to, fires or other casualties or accidents, acts of God, severe weather
conditions, sun outages, strikes or labor disputes, war or other violence, any
law, order, proclamation, regulation, ordinance, demand or requirement of any
governmental agency or any other act or condition whatsoever beyond the
reasonable control of the affected party. A party whose performance of its
obligations hereunder is prevented, restricted or interfered with by reason of
a Force Majeure condition shall be excused from such performance to the extent
of such Force Majeure condition so long as such party immediately continues
performance whenever and to the extent such causes are removed. Nothing in this
Section shall relieve Customer of its obligations to make payments to AvData in
accordance with Paragraphs C and J of this Agreement, except to the extent that
AvData is relieved of its obligations to make payments to the Satellite
Operator by such Force Majeure condition.

         9. Applicable Law and Entire Agreement. This Agreement shall be
interpreted, construed and governed in accordance with the laws of the State of
Georgia. This Agreement constitutes the entire agreement between the parties,
supersedes all previous understandings, commitments or representations and is
intended as the complete and exclusive statement of the terms of the agreement
between the parties concerning the subject matter hereof. This Agreement may
not be amended or modified in any way, and none of its provisions may be
waived, except by a writing signed by each party hereto.

         10. Attorney's Fees. In the event of any dispute or controversy
arising hereunder, any court having jurisdiction in any such dispute or
controversy shall determine which of the parties is the prevailing party and
shall award to the prevailing party the reasonable fees and expenses of
counsel, experts and other court costs incurred in connection with such dispute
or controversy.

         11. No right of Transfer. Customer shall not, and shall not have the
right to, grant, sell, assign, encumber, permit the utilization of, license,
lease, or otherwise convey, directly or indirectly, in whole or in part
(individually, a "Transfer"), Customer's Satellite Capacity, or any of its
rights under this Agreement, to any other entity or person. Notwithstanding the
foregoing, Customer may assign its Satellite Capacity, and its rights under
this Agreement, without AvData's written consent, to any corporation,
partnership or other entity which is controlled by Customer and in which
Customer has not less than fifty-one percent (51%) of the ownership interest,
provided that no such assignment shall relieve Customer of any of its
obligations hereunder.

         12. Successors and Assigns. Subject to Paragraph L.11 above, this
Agreement shall be binding on and shall inure to the benefit of any successors
and assigns of the parties, provided that no assignment of this Agreement shall
relieve either party hereto of its obligations to the other party. Any
purported assignment by either party not in compliance with the provisions of
this Agreement shall be null and void and of no force and effect.


- --------------------------------------------------------------------------------

            Second Amended and Restated Satellite Services Agreement
Page 8                AvData Systems, Inc - Proprietary

<PAGE>   9

                          SECOND AMENDED AND RESTATED
                   SATELLITE SERVICES SUPPLEMENTAL AGREEMENT


         IN WITNESS WHEREOF, each of the parties hereto has caused this
Agreement to be duly executed on its behalf by an officer thereunto duly
authorized, all as of the day and year first above written.


                                   AVDATA SYSTEMS, INC.



                                    By: /s/ HAROLD E. COWAN
                                      ------------------------------------------
                                    Title: Vice President Account Management
                                          --------------------------------------
                                    Date: 9/25/98
                                         ---------------------------------------
                                    Signed: Harold E. Cowan
                                           -------------------------------------

                                    PAGEMART WIRELESS, INC.



                                    By: /s/ JACK D. HANSON
                                      ------------------------------------------
                                    Title: VP Network Operation
                                          --------------------------------------
                                    Date: 9/24/98
                                         ---------------------------------------
                                    Signed: Jack D. Hanson
                                           -------------------------------------


            Second Amended and Restated Satellite Services Agreement
Page 9                AvData Systems, Inc - Proprietary


<PAGE>   10


                          SECOND AMENDED AND RESTATED
                   SATELLITE SERVICES SUPPLEMENTAL AGREEMENT


                                   SCHEDULE 1

                           MONTHLY RECURRING CHARGES

<TABLE>
<CAPTION>
- -------------------------------------------------------------------------------
   SATELLITE       SCU QUANTITY #          UNIT PRICE           EXTENDED PRICE
- -------------------------------------------------------------------------------
  <S>              <C>                     <C>                  <C>
     GE-1             [*]                     [*]                   [*]
- -------------------------------------------------------------------------------

   SN-4/GE-4          [*]                     [*]                   [*]
- -------------------------------------------------------------------------------
#        - Satellite Capacity Unit (SCU) represents one (1) 128 Kbps outbound
         channel and two (2) 64 Kbps inbound channels which equate to 800 kHz
         of satellite capacity per SCU.
- -------------------------------------------------------------------------------
</TABLE>



CONDITIONS TO PRICING

Satellite Capacity Unit charges will begin at [*] on GE-1 at [*] per SCU/month
and [*] SCU's on SN-4 at [*] per SCU/month. Effective August 1, 1998, the SCU
total on GE-1 will increase to [*] at [*] per SCU/month. Thereafter, a total of
[*] SCUs per month shall be purchased until July 31, 2003, when the [*] SCU's on
GE-1 shall terminate.


SATELLITE(S)

As of the Execution Date, AvData has commitments to provide PageMart [*] SCU's
on GE-1 and [*] SCUs on SN-4. Provisioning of a High Power SCU option on either
GE-1 or SN-4, if requested by PageMart, is subject to the approval of both the
Satellite Operator and the FCC.

Regarding the planned replacement of SN-4 with GE-4, the following additional
qualifications apply:

         (a)      Satellite Operator is planning for GE-4 to be launched in the
                  second quarter of 1999, and to become "Commercially
                  Operational" (date when GE-4 is fully operational and
                  available for use at the assigned orbital position of 101
                  degrees W. L. and meets certain other requirements specified
                  in the agreement between AvData and Satellite Operator)
                  during the second calendar quarter of 1999. Satellite
                  Operator has applied to the FCC for authorization to locate
                  GE-4 at 101 degrees W. L. for the purpose of replacing SN-4.

         (b)      The Satellite Operator has the right to modify the mission of
                  GE-4 (for example, to replace another existing in-orbit
                  satellite operated by the Satellite Operator due to a
                  satellite failure) the Satellite Operator has represented to
                  AvData that it would replace SN-4 with the next available
                  satellite (currently GE-6). The Satellite Operator has
                  represented to AvData that SN-4 has the fuel and capability
                  to remain in orbit until December 2004.

         (c)      Under AvData's agreement with Satellite Operator, the
                  Satellite Operator may, at its sole discretion, offer certain
                  capacity on SCPC Transponder(s) capable of supporting South
                  American downlink and uplink coverage. Such revised service
                  would be subject to mutually agreed upon pricing, allocated
                  power and Transponder performance specifications. If
                  Satellite Operator offers such capacity, AvData will notify
                  Customer of the terms and conditions on which AvData would
                  offer such capacity to Customer. Customer shall have thirty
                  (30) days thereafter to accept such offer. AvData shall be
                  under no obligation to make such capacity available on GE-4
                  or any other satellite.


            Second Amended and Restated Satellite Services Agreement
Page 10                AvData Systems, Inc - Proprietary



*  CONFIDENTIAL INFORMATION HAS BEEN DELETED. THE OMITTED MATERIAL HAS BEEN 
   FILED SEPARATELY WITH THE COMMISSION PURSUANT TO AN APPLICATION FOR 
   CONFIDENTIAL TREATMENT.

<PAGE>   11

                          SECOND AMENDED AND RESTATED
                   SATELLITE SERVICES SUPPLEMENTAL AGREEMENT


         (d)      Provided that this Agreement is still in effect on the date
                  GE-4 becomes "Commercially Operational", AvData shall provide
                  and Customer shall take, in lieu of [*] on SN-4, [*] SCUs on
                  GE-4 for the remainder of the Service term of this Agreement.
                  SCU service on GE-4 shall commence (and SCU service on SN-4
                  shall be discontinued) on the date AvData transitions its
                  capacity on SN-4 to GE-4 in accordance wit its agreement with
                  the Satellite Operator.

         (e)      Neither the Satellite Operator nor AvData shall have any
                  liability whatsoever in connection with the launch or
                  manufacture of GE-4, including but not limited to, GE-4
                  launch delay or failure, GE-4 is delayed in operation, or
                  GE-4 is positioned at an orbital location other than 101 W.
                  L.

         (f)      Until SN-4 is replaced by GE-4 (or other suitable satellite),
                  AvData will provide to PageMart up to [*] of Satellite
                  Capacity on G-3R with Hub services at [*]. Such capacity will
                  be used to support PageMart VNI offshore sites (located in the
                  Caribbean area, Hawaii and Alaska). Successful replacement of
                  SN-4 with a satellite capable of supporting such offshore
                  sites will relieve AvData of all responsibility regarding this
                  temporary commitment.

         (g)      If a Satellite Capacity Failure occurs with respect to
                  Satellite Capacity provided by AvData on G-3R prior to SN-4
                  being replaced by GE-4 (or other suitable satellite), AvData
                  will provide to PageMart up to [*] of Satellite Capacity on
                  an alternative satellite with Hub services [*]. Such capacity
                  will be used to support PageMart VNI offshore sites (located
                  in the Caribbean area, Hawaii and Alaska). Successful
                  replacement of SN-4 with a satellite capable of supporting
                  such offshore sites will relieve AvData of all responsibility
                  regarding this commitment.


            Second Amended and Restated Satellite Services Agreement
Page 11                AvData Systems, Inc - Proprietary




*  CONFIDENTIAL INFORMATION HAS BEEN DELETED. THE OMITTED MATERIAL HAS BEEN 
   FILED SEPARATELY WITH THE COMMISSION PURSUANT TO AN APPLICATION FOR 
   CONFIDENTIAL TREATMENT.


<PAGE>   1
                                                                    EXHIBIT 10.5

===============================================================================



                                CREDIT AGREEMENT

                                     among


                            PAGEMART WIRELESS, INC.,


                                VARIOUS LENDERS,


                             BANKERS TRUST COMPANY,
                            as ADMINISTRATIVE AGENT,


                      MORGAN STANLEY SENIOR FUNDING, INC.,
                             as SYNDICATION Agent,


                                      and


                             BANKERS TRUST COMPANY


                                      and


                      MORGAN STANLEY SENIOR FUNDING, INC.,
                                as CO-ARRANGERS


                -----------------------------------------------


                           Dated as of March 23, 1999


                -----------------------------------------------


===============================================================================

<PAGE>   2

          CREDIT AGREEMENT, dated as of March 23, 1999, among PAGEMART
WIRELESS, INC., a Delaware corporation (the "Borrower"), the Lenders party
hereto from time to time, BANKERS TRUST COMPANY, as Administrative Agent (in
such capacity, the "Administrative Agent"), MORGAN STANLEY SENIOR FUNDING,
INC., as Syndication Agent (in such capacity, the "Syndication Agent"), and
BANKERS TRUST COMPANY and MORGAN STANLEY SENIOR FUNDING, INC., as Co-Arrangers
(in such capacity, the "Co-Arrangers") (all capitalized terms used herein and
defined in Section 11 are used herein as therein defined).


                             W I T N E S S E T H :


          WHEREAS, the proceeds of the Loans under this Agreement will be used,
in part, to refinance in full all of the Indebtedness under the Existing Credit
Agreement;


          WHEREAS, the Existing Credit Agreement is currently the Credit
Agreement under, and as defined in, the 11-1/4% Senior Subordinated Discount
Note Indenture;


          WHEREAS, from and after the Initial Borrowing Date, this Agreement
and the other Credit Documents shall constitute the "Credit Agreement" under,
and as defined in, the 11-1/4% Senior Subordinated Discount Note Indenture and
therefore constitutes "Designated Senior Indebtedness" thereunder; and


          WHEREAS, subject to and upon the terms and conditions set forth
herein, the Lenders are willing to make available to the Borrower the
respective credit facilities provided for herein;


          NOW, THEREFORE, IT IS AGREED:

          SECTION 1. Amount and Terms of Credit.

          1.01 The Commitments. (a) Subject to and upon the terms and
conditions set forth herein, each Lender with a Multiple Draw I Sub-Tranche A
Term Loan Commitment severally agrees to make a term loan or term loans (each a
"Multiple Draw I Sub-Tranche A Term Loan" and, collectively, the "Multiple Draw
I Sub-Tranche A Term Loans") to the Borrower, which Multiple Draw I Sub-Tranche
A Term Loans (i) may only be incurred by the Borrower on the Initial Borrowing
Date, (ii) shall, at the option of the Borrower, be incurred and maintained as,
and/or converted into, Base Rate Loans or Eurodollar Loans, provided that, (A)
except as otherwise specifically provided in Section 1.10(b), all Multiple Draw
I Sub-Tranche A Term Loans comprising the same Borrowing shall at all times be
of the same Type and (B) no Multiple Draw I Sub-Tranche A Term Loans maintained
as Eurodollar Loans may be incurred prior to the earlier of (1) the 90th day
following the Initial Borrowing Date and (2) the Syndication Date and (iii)
shall be made by each such Lender in that aggregate principal amount which does
not exceed the Multiple Draw I Sub-Tranche A Term Loan Commitment of such
Lender on the Initial

<PAGE>   3

Borrowing Date (before giving effect to any reduction thereto on such date
pursuant to Section 3.03(b)). Once repaid, Multiple Draw I Sub-Tranche A Term
Loans incurred hereunder may not be reborrowed.

          (b) Subject to and upon the terms and conditions set forth herein,
each Lender with a Multiple Draw I Sub-Tranche B Term Loan Commitment severally
agrees to make on each Multiple Draw I Sub-Tranche B Term Loan Borrowing Date
on or prior to the Multiple Draw I Term Loan Commitment Termination Date, a
term loan or term loans (each a "Multiple Draw I Sub-Tranche B Term Loan" and,
collectively, the "Multiple Draw I Sub-Tranche B Term Loans") to the Borrower,
which Multiple Draw I Sub-Tranche B Term Loans (i) shall, at the option of the
Borrower, be incurred and maintained as, and/or converted into, Base Rate Loans
or Eurodollar Loans, provided that, (A) except as otherwise specifically
provided in Section 1.10(b), all Multiple Draw I Sub-Tranche B Term Loans
comprising the same Borrowing shall at all times be of the same Type and (B) no
Multiple Draw I Sub-Tranche B Term Loans maintained as Eurodollar Loans may be
incurred prior to the earlier of (1) the 90th day following the Initial
Borrowing Date and (2) the Syndication Date and (ii) shall be made by each such
Lender in that aggregate principal amount which does not exceed the Multiple
Draw I Sub-Tranche B Term Loan Commitment of such Lender on any such Multiple
Draw I Sub-Tranche B Term Loan Borrowing Date (before giving effect to any
reduction thereto on such date pursuant to Section 3.03(c)(i)). Once repaid,
Multiple Draw I Sub-Tranche B Term Loans incurred hereunder may not be
reborrowed.

          (c) Subject to and upon the terms and conditions set forth herein,
each Lender with a Multiple Draw I Sub-Tranche C Term Loan Commitment severally
agrees to make on each Multiple Draw I Sub-Tranche C Term Loan Borrowing Date
on or prior to the Multiple Draw I Term Loan Commitment Termination Date, a
term loan or term loans (each a "Multiple Draw I Sub-Tranche C Term Loan" and,
collectively, the "Multiple Draw I Sub-Tranche C Term Loans" and, together with
the Multiple Draw I Sub-Tranche A Term Loans and the Multiple Draw I
Sub-Tranche B Term Loans, the "Multiple Draw I Term Loans") to the Borrower,
which Multiple Draw I Sub-Tranche C Term Loans (i) shall, at the option of the
Borrower, be incurred and maintained as, and/or converted into, Base Rate Loans
or Eurodollar Loans, provided that, (A) except as otherwise specifically
provided in Section 1.10(b), all Multiple Draw I Sub-Tranche C Term Loans
comprising the same Borrowing shall at all times be of the same Type and (B) no
Multiple Draw I Sub-Tranche C Term Loans maintained as Eurodollar Loans may be
incurred prior to the earlier of (1) the 90th day following the Initial
Borrowing Date and (2) the Syndication Date and (ii) shall be made by each such
Lender in that aggregate principal amount which does not exceed the Multiple
Draw I Sub-Tranche C Term Loan Commitment of such Lender on any such Multiple
Draw I Sub-Tranche C Term Loan Borrowing Date (before giving effect to any
reduction thereto on such date pursuant to Section 3.03(c)(i)). Once repaid,
Multiple Draw I Sub-Tranche C Term Loans incurred hereunder may not be
reborrowed.

          (d) Subject to Section 1.14 and the other terms and conditions set
forth herein, each Lender with a Multiple Draw II Sub-Tranche A Term Loan
Commitment severally agrees to make on each Multiple Draw II Sub-Tranche A Term
Loan Borrowing Date, a term loan or term loans (each a "Multiple Draw II
Sub-Tranche A Term Loan" and, collectively, the "Multiple Draw II Sub-Tranche A
Term Loans") to the Borrower, which Multiple Draw II Sub-Tranche A Term


                                      -2-
<PAGE>   4

Loans (i) shall, at the option of the Borrower, be incurred and maintained as,
and/or converted into, Base Rate Loans or Eurodollar Loans, provided that,
except as otherwise specifically provided in Section 1.10(b), all Multiple Draw
II Term Loans comprising the same Borrowing shall at all times be of the same
Type, (ii) shall be made by each such Lender in that aggregate principal amount
which does not exceed the Multiple Draw II Sub-Tranche A Term Loan Commitment
of such Lender on any such Multiple Draw II Term Loan Borrowing Date (before
giving effect to any reduction thereto on such date pursuant to Section
3.03(d)(i)) and (iii) may not be incurred prior to the Multiple Draw I Term
Loan Full Utilization Date. Once repaid, Multiple Draw II Term Loans incurred
hereunder may not be reborrowed.

          (e) Subject to Section 1.14 and the other applicable terms and
conditions set forth herein, each Lender with a Multiple Draw II Sub-Tranche B
Term Loan Commitment severally agrees to make on each Multiple Draw II
Sub-Tranche B Term Loan Borrowing Date, a term loan or term loans (each a
"Multiple Draw II Sub-Tranche B Term Loan" and, collectively, the "Multiple
Draw II Sub-Tranche B Term Loans" and, together with the Multiple Draw II
Sub-Tranche A Term Loans, the "Multiple Draw II Term Loans") to the Borrower,
which Multiple Draw II Sub-Tranche B Term Loans (i) shall, at the option of the
Borrower, be incurred and maintained as, and/or converted into, Base Rate Loans
or Eurodollar Loans, provided that, except as otherwise specifically provided
in Section 1.10(b), all Multiple Draw II Sub-Tranche B Term Loans comprising
the same Borrowing shall at all times be of the same Type, (ii) shall be made
by each such Lender in that aggregate principal amount which does not exceed
the Multiple Draw II Sub-Tranche B Term Loan Commitment of such Lender on any
such Multiple Draw II Term Loan Borrowing Date (before giving effect to any
reduction thereto on such date pursuant to Section 3.03(d)(i)) and (iii) may
not be incurred prior to the Multiple Draw I Term Loan Full Utilization Date.
Once repaid, Multiple Draw II Sub-Tranche B Term Loans incurred hereunder may
not be reborrowed.

          (f) Subject to and upon the terms and conditions set forth herein,
each Lender with a Revolving Loan Commitment severally agrees to make, at any
time and from time to time on or after the Initial Borrowing Date and prior to
the Multiple Draw I/Revolver Maturity Date, a revolving loan or revolving loans
(each a "Revolving Loan" and, collectively, the "Revolving Loans") to the
Borrower, which Revolving Loans (i) shall, at the option of the Borrower, be
incurred and maintained as, and/or converted into, Base Rate Loans or
Eurodollar Loans, provided that, (A) except as otherwise specifically provided
in Section 1.10(b), all Revolving Loans comprising the same Borrowing shall at
all times be of the same Type and (B) no Revolving Loans maintained as
Eurodollar Loans may be incurred prior to the earlier of (1) the 90th day
following the Initial Borrowing Date and (2) the Syndication Date, (ii) may be
repaid and reborrowed in accordance with the provisions hereof, (iii) shall not
exceed for any such Lender at any time outstanding that aggregate principal
amount which, when added to the product of (x) such Lender's RL Percentage and
(y) the sum of (I) the aggregate amount of all Letter of Credit Outstandings
(exclusive of Unpaid Drawings which are repaid with the proceeds of, and
simultaneously with the incurrence of, the respective incurrence of Revolving
Loans) at such time and (II) the aggregate principal amount of all Swingline
Loans (exclusive of Swingline Loans which are repaid with the proceeds of, and
simultaneously with the incurrence of, the respective incurrence of Revolving
Loans) then outstanding, equals the Available Revolving Loan Commitment of such
Lender at such time and (iv) shall not exceed for all such Lenders at any


                                      -3-
<PAGE>   5

time outstanding that aggregate principal amount which, when added to the sum
of (I) the aggregate amount of all Letter of Credit Outstandings (exclusive of
Unpaid Drawings which are repaid with the proceeds of, and simultaneously with
the incurrence of, the respective incurrence of Revolving Loans) at such time
and (II) the aggregate principal amount of all Swingline Loans (exclusive of
Swingline Loans which are repaid with the proceeds of, and simultaneously with
the incurrence of, the respective incurrence of Revolving Loans) then
outstanding, equals the Total Available Revolving Loan Commitment at such time.

          (g) Subject to and upon the terms and conditions set forth herein,
the Swingline Lender agrees to make, at any time and from time to time on or
after the Initial Borrowing Date and prior to the Swingline Expiry Date, a
revolving loan or revolving loans (each a "Swingline Loan" and, collectively,
the "Swingline Loans") to the Borrower, which Swingline Loans (i) shall be made
and maintained as Base Rate Loans, (ii) may be repaid and reborrowed in
accordance with the provisions hereof, (iii) shall not exceed in aggregate
principal amount at any time outstanding, when combined with the aggregate
principal amount of all Revolving Loans then outstanding and the aggregate
amount of all Letter of Credit Outstandings at such time, an amount equal to
the Total Available Revolving Loan Commitment and (iv) shall not exceed in
aggregate principal amount at any time outstanding the Maximum Swingline
Amount. Notwithstanding anything to the contrary contained in this Section
1.01(g), (i) the Swingline Lender shall not be obligated to make any Swingline
Loans at a time when a Lender Default exists unless the Swingline Lender has
entered into arrangements satisfactory to it and the Borrower to eliminate the
Swingline Lender's risk with respect to the Defaulting Lender's or Lenders'
participation in such Swingline Loans, including by cash collateralizing such
Defaulting Lender's or Lenders' RL Percentage of the outstanding Swingline
Loans and (ii) the Swingline Lender shall not make any Swingline Loan after it
has received written notice from the Borrower or the Required Lenders stating
that a Default or an Event of Default exists and is continuing until such time
as the Swingline Lender shall have received written notice (A) of rescission of
all such notices from the party or parties originally delivering such notice or
notices, (B) of the waiver of such Default or Event of Default by the Required
Lenders or (C) of the cure (as reasonably determined by the Administrative
Agent) of such Default or Event of Default from the Administrative Agent.

          (h) On any Business Day, the Swingline Lender may, in its sole
discretion, give notice to the RL Lenders that the Swingline Lender's
outstanding Swingline Loans shall be funded with one or more Borrowings of
Revolving Loans (provided that such notice shall be deemed to have been
automatically given upon the occurrence of a Default or an Event of Default
under Section 10.05 or upon the exercise of any of the remedies provided in the
last paragraph of Section 10), in which case one or more Borrowings of
Revolving Loans constituting Base Rate Loans (each such Borrowing, a "Mandatory
Borrowing") shall be made on the immediately succeeding Business Day by all RL
Lenders pro rata based on each such RL Lender's RL Percentage (determined
before giving effect to any termination of the Revolving Loan Commitments
pursuant to the last paragraph of Section 10) and the proceeds thereof shall be
applied directly by the Swingline Lender to repay the Swingline Lender for such
outstanding Swingline Loans. Each RL Lender hereby irrevocably agrees to make
Revolving Loans upon one Business Day's notice pursuant to each Mandatory
Borrowing in the amount and in the manner specified in the preceding sentence
and on the date specified in writing by the Swingline Lender


                                      -4-
<PAGE>   6

notwithstanding (i) the amount of the Mandatory Borrowing may not comply with
the Minimum Borrowing Amount otherwise required hereunder, (ii) whether any
conditions specified in Section 6 are then satisfied, (iii) whether a Default
or an Event of Default then exists, (iv) the date of such Mandatory Borrowing
and (v) the amount of the Total Available Revolving Loan Commitment at such
time. In the event that any Mandatory Borrowing cannot for any reason be made
on the date otherwise required above (including, without limitation, as a
result of the commencement of a proceeding under the Bankruptcy Code with
respect to the Borrower), then each RL Lender hereby agrees that it shall
forthwith purchase (as of the date the Mandatory Borrowing would otherwise have
occurred, but adjusted for any payments received from the Borrower on or after
such date and prior to such purchase) from the Swingline Lender such
participations in the outstanding Swingline Loans as shall be necessary to
cause the RL Lenders to share in such Swingline Loans ratably based upon their
respective RL Percentages (determined before giving effect to any termination
of the Revolving Loan Commitments pursuant to the last paragraph of Section
10), provided that (x) all interest payable on the Swingline Loans shall be for
the account of the Swingline Lender until the date as of which the respective
participation is required to be purchased and, to the extent attributable to
the purchased participation, shall be payable to the participant from and after
such date and (y) at the time any purchase of participations pursuant to this
sentence is actually made, the purchasing RL Lender shall be required to pay
the Swingline Lender interest on the principal amount of participation
purchased for each day from and including the day upon which the Mandatory
Borrowing would otherwise have occurred to but excluding the date of payment
for such participation, at the overnight Federal Funds Rate for the first three
days and at the rate otherwise applicable to Revolving Loans maintained as Base
Rate Loans hereunder for each day thereafter.

          1.02 Minimum Amount of Each Borrowing. The aggregate principal amount
of each Borrowing of Loans under a respective Tranche shall not be less than
the Minimum Borrowing Amount applicable to such Tranche. More than one
Borrowing may occur on the same date, but at no time shall there be outstanding
more than twelve Borrowings of Eurodollar Loans in the aggregate.

          1.03 Notice of Borrowing. (a) Whenever the Borrower desires to incur
(x) Eurodollar Loans hereunder, the Borrower shall give the Administrative
Agent at the Notice Office at least three Business Days' prior notice of each
Eurodollar Loan to be incurred hereunder and (y) Base Rate Loans hereunder
(excluding Swingline Loans and Revolving Loans made pursuant to a Mandatory
Borrowing), the Borrower shall give the Administrative Agent at the Notice
Office at least one Business Day's prior notice of each Base Rate Loan to be
incurred hereunder, provided that (in each case) any such notice shall be
deemed to have been given on a certain day only if given before 11:00 A.M. (New
York time) on such day. Each such notice (each a "Notice of Borrowing"), except
as otherwise expressly provided in Section 1.10, shall be irrevocable and shall
be given by the Borrower in writing, or by telephone promptly confirmed in
writing, in the form of Exhibit A, appropriately completed to specify the
aggregate principal amount of the Loans to be incurred pursuant to such
Borrowing, the date of such Borrowing (which shall be a Business Day) whether
the Loans being incurred pursuant to such Borrowing shall constitute Multiple
Draw I Sub-Tranche A Term Loans, Multiple Draw I Sub-Tranche B Term Loans,
Multiple Draw I Sub-Tranche C Term Loans, Multiple Draw II Sub-Tranche A Term
Loans, Multiple Draw II Sub-Tranche B Term Loans or Revolving Loans and whether
the


                                      -5-
<PAGE>   7

Loans being incurred pursuant to such Borrowing are to be initially maintained
as Base Rate Loans or, to the extent permitted hereunder, Eurodollar Loans and,
if Eurodollar Loans, the initial Interest Period to be applicable thereto. The
Administrative Agent shall promptly give each Lender which is required to make
Loans of the Tranche specified in the respective Notice of Borrowing notice of
such proposed Borrowing, of such Lender's proportionate share thereof and of
the other matters required by the immediately preceding sentence to be
specified in the Notice of Borrowing.

          (b) (i) Whenever the Borrower desires to incur Swingline Loans
hereunder, the Borrower shall give the Swingline Lender no later than 1:00 P.M.
(New York time) on the date that a Swingline Loan is to be incurred, written
notice or telephonic notice promptly confirmed in writing of each Swingline
Loan to be incurred hereunder. Each such notice shall be irrevocable and
specify in each case (A) the date of Borrowing (which shall be a Business Day)
and (B) the aggregate principal amount of the Swingline Loans to be incurred
pursuant to such Borrowing.

          (ii) Mandatory Borrowings shall be made upon the notice specified in
Section 1.01(h), with the Borrower irrevocably agreeing, by its incurrence of
any Swingline Loan, to the making of the Mandatory Borrowings as set forth in
Section 1.01(h).

          (c) Without in any way limiting the obligation of the Borrower to
confirm in writing any telephonic notice of any Borrowing, conversion or
prepayment of Loans, the Administrative Agent or the Swingline Lender, as the
case may be, may act without liability upon the basis of telephonic notice of
such Borrowing, conversion or prepayment, as the case may be, believed by the
Administrative Agent or the Swingline Lender, as the case may be, in good faith
to be from the Chairman of the Board, the President, the Chief Financial
Officer, the Treasurer or any Assistant Treasurer of the Borrower, or from any
other authorized officer of the Borrower designated in writing by the Borrower
to the Administrative Agent as being authorized to give such notices, prior to
receipt of written confirmation. In each such case, the Borrower hereby agrees
that the Administrative Agent's or Swingline Lender's record of the terms of
such telephonic notice of such Borrowing, conversion or prepayment of Loans, as
the case may be, shall be controlling in the event of a dispute, absent
manifest error.

          1.04 Disbursement of Funds. No later than 12:00 Noon (New York time)
on the date specified in each Notice of Borrowing (or (x) in the case of
Swingline Loans, no later than 3:00 P.M. (New York time) on the date specified
pursuant to Section 1.03(b)(i) or (y) in the case of Mandatory Borrowings, no
later than 1:00 P.M. (New York time) on the date specified in Section 1.01(h)),
each Lender with a Commitment of the respective Tranche will make available its
pro rata portion (determined in accordance with Section 1.07) of each such
Borrowing requested to be made on such date (or in the case of Swingline Loans,
the Swingline Lender will make available the full amount thereof). All such
amounts will be made available in Dollars and in immediately available funds at
the Payment Office, and the Administrative Agent will, except in the case of
Revolving Loans made pursuant to a Mandatory Borrowing, make available to the
Borrower at the Payment Office the aggregate of the amounts so made available
by the Lenders. Unless the Administrative Agent shall have been notified by any
Lender prior to the date of Borrowing that such Lender does not intend to make
available to the Administrative Agent such


                                      -6-
<PAGE>   8

Lender's portion of any Borrowing to be made on such date, the Administrative
Agent may assume that such Lender has made such amount available to the
Administrative Agent on such date of Borrowing and the Administrative Agent may
(but shall not be obligated to), in reliance upon such assumption, make
available to the Borrower a corresponding amount. If such corresponding amount
is not in fact made available to the Administrative Agent by such Lender, the
Administrative Agent shall be entitled to recover such corresponding amount on
demand from such Lender. If such Lender does not pay such corresponding amount
forthwith upon the Administrative Agent's demand therefor, the Administrative
Agent shall promptly notify the Borrower and the Borrower shall within two
Business Days of such notice pay such corresponding amount (together with all
interest payable as described in the immediately succeeding sentence) to the
Administrative Agent. The Administrative Agent also shall be entitled to
recover on demand from such Lender or the Borrower, as the case may be,
interest on such corresponding amount in respect of each day from the date such
corresponding amount was made available by the Administrative Agent to the
Borrower until the date such corresponding amount is recovered by the
Administrative Agent, at a rate per annum equal to (i) if recovered from such
Lender, the overnight Federal Funds Rate for the first three days and at the
interest rate otherwise applicable to such Loans for each day thereafter and
(ii) if recovered from the Borrower, the rate of interest applicable to the
respective Borrowing, as determined pursuant to Section 1.08. Nothing in this
Section 1.04 shall be deemed to relieve any Lender from its obligation to make
Loans hereunder or to prejudice any rights which the Borrower may have against
any Lender as a result of any failure by such Lender to make Loans hereunder.

          1.05 Notes. (a) The Borrower's obligation to pay the principal of,
and interest on, the Loans made by each Lender shall be evidenced in the
Register maintained by the Administrative Agent pursuant to Section 13.15 and
shall, if requested by such Lender, also be evidenced (i) if Multiple Draw I
Term Loans, by a promissory note duly executed and delivered by the Borrower
substantially in the form of Exhibit B-1, with blanks appropriately completed
in conformity herewith (each a "Multiple Draw I Term Note" and, collectively,
the "Multiple Draw I Term Notes"), (ii) if Multiple Draw II Term Loans, by a
promissory note duly executed and delivered by the Borrower substantially in
the form of Exhibit B-2, with blanks appropriately completed in conformity
herewith (each a "Multiple Draw II Term Note" and, collectively, the "Multiple
Draw II Term Notes"), (iii) if Revolving Loans, by a promissory note duly
executed and delivered by the Borrower substantially in the form of Exhibit
B-3, with blanks appropriately completed in conformity herewith (each a
"Revolving Note" and, collectively, the "Revolving Notes") and (iv) if
Swingline Loans, by a promissory note duly executed and delivered by the
Borrower substantially in the form Exhibit B-4, with blanks appropriately
completed in conformity herewith (the "Swingline Note").

          (b) The Multiple Draw I Term Note issued to each Lender that has a
Multiple Draw I Term Loan Commitment or outstanding Multiple Draw I Term Loans
shall (i) be executed by the Borrower, (ii) be payable to such Lender or its
registered assigns and be dated the Initial Borrowing Date (or, if issued after
the Initial Borrowing Date, be dated the date of issuance thereof), (iii) be in
a stated principal amount equal to the Multiple Draw I Term Loan Commitment of
such Lender on the Initial Borrowing Date (before giving effect to any Multiple
Draw I Term Loans on such date by such Lender) (or, if issued after the Initial
Borrowing Date, be in a stated principal amount equal to the outstanding
Multiple Draw I Term Loan


                                      -7-
<PAGE>   9

Commitment, if any, of such Lender at such time plus the outstanding principal
amount of Multiple Draw I Term Loans of such Lender at such time) and be
payable in the outstanding principal amount of Multiple Draw I Term Loans
evidenced thereby, (iv) mature on the Multiple Draw I/Revolver Maturity Date,
(v) bear interest as provided in the appropriate clause of Section 1.08 in
respect of the Base Rate Loans and Eurodollar Loans, as the case may be,
evidenced thereby, (vi) be subject to voluntary prepayment as provided in
Section 4.01, and mandatory repayment as provided in Section 4.02, and (vii) be
entitled to the benefits of this Agreement and the other Credit Documents.

          (c) The Multiple Draw II Term Note issued to each Lender that has a
Multiple Draw II Term Loan Commitment or outstanding Multiple Draw II Term
Loans shall (i) be executed by the Borrower, (ii) be payable to such Lender or
its registered assigns and be dated the date of the issuance thereof, (iii) be
in a stated principal amount equal to the outstanding Multiple Draw II Term
Loan Commitment, if any, of such Lender at such time plus the outstanding
principal amount of Multiple Draw II Term Loans of such Lender at such time and
be payable in the outstanding principal amount of Multiple Draw II Term Loans
evidenced thereby, (iv) mature on the respective Multiple Draw II Maturity
Date, (v) bear interest as provided in the appropriate clause of Section 1.08
in respect of the Base Rate Loans and Eurodollar Loans, as the case may be,
evidenced thereby, (vi) be subject to voluntary prepayment as provided in
Section 4.01, and mandatory repayment as provided in Section 4.02, and (vii) be
entitled to the benefits of this Agreement and the other Credit Documents.

          (d) The Revolving Note issued to each Lender that has a Revolving
Loan Commitment or outstanding Revolving Loans shall (i) be executed by the
Borrower, (ii) be payable to such Lender or its registered assigns and be dated
the Initial Borrowing Date (or, if issued after the Initial Borrowing Date, be
dated the date of the issuance thereof), (iii) be in a stated principal amount
equal to the Revolving Loan Commitment of such Lender (or, if issued after the
termination thereof, be in a stated principal amount equal to the outstanding
Revolving Loans of such Lender at such time) and be payable in the outstanding
principal amount of the Revolving Loans evidenced thereby, (iv) mature on the
Multiple Draw I/Revolver Maturity Date, (v) bear interest as provided in the
appropriate clause of Section 1.08 in respect of the Base Rate Loans and
Eurodollar Loans, as the case may be, evidenced thereby, (vi) be subject to
voluntary prepayment as provided in Section 4.01, and mandatory repayment as
provided in Section 4.02, and (vii) be entitled to the benefits of this
Agreement and the other Credit Documents.

          (e) The Swingline Note issued to the Swingline Lender shall (i) be
executed by the Borrower, (ii) be payable to the Swingline Lender or its
registered assigns and be dated the Initial Borrowing Date, (iii) be in a
stated principal amount equal to the Maximum Swingline Amount and be payable in
the outstanding principal amount of the Swingline Loans evidenced thereby from
time to time, (iv) mature on the Swingline Expiry Date, (v) bear interest as
provided in the appropriate clause of Section 1.08 in respect of the Base Rate
Loans evidenced thereby, (vi) be subject to voluntary prepayment as provided in
Section 4.01, and mandatory repayment as provided in Section 4.02, and (vii) be
entitled to the benefits of this Agreement and the other Credit Documents.


                                      -8-
<PAGE>   10

          (f) Each Lender will note on its internal records the amount of each
Loan made by it and each payment in respect thereof and will prior to any
transfer of any of its Notes endorse on the reverse side thereof the
outstanding principal amount of Loans evidenced thereby. Failure to make any
such notation or any error in such notation shall not affect the Borrower's
obligations in respect of such Loans.

          1.06 Conversions. The Borrower shall have the option to convert, on
any Business Day occurring on or after the earlier of (i) the 90th day after
the Initial Borrowing Date and (ii) the Syndication Date, all or a portion
equal to at least the Minimum Borrowing Amount of the outstanding principal
amount of Loans (other than Swingline Loans which may not be converted pursuant
to this Section 1.06) made pursuant to one or more Borrowings (so long as of
the same Tranche) of one or more Types of Loans into a Borrowing (of the same
Tranche) of another Type of Loan, provided that, (i) except as otherwise
provided in Section 1.10(b), Eurodollar Loans may be converted into Base Rate
Loans only on the last day of an Interest Period applicable to the Loans being
converted and no such partial conversion of Eurodollar Loans shall reduce the
outstanding principal amount of such Eurodollar Loans made pursuant to a single
Borrowing to less than the Minimum Borrowing Amount applicable thereto, (ii)
unless the Required Lenders otherwise agree, Base Rate Loans may only be
converted into Eurodollar Loans if no Default or Event of Default is in
existence on the date of the conversion and (iii) no conversion pursuant to
this Section 1.06 shall result in a greater number of Borrowings of Eurodollar
Loans than is permitted under Section 1.02. Each such conversion shall be
effected by the Borrower by giving the Administrative Agent at the Notice
Office prior to 11:00 A.M. (New York time) at least three Business Days' prior
notice (each a "Notice of Conversion") specifying the Loans to be so converted,
the Borrowing or Borrowings pursuant to which such Loans were made and, if to
be converted into Eurodollar Loans, the Interest Period to be initially
applicable thereto. The Administrative Agent shall give each Lender prompt
notice of any such proposed conversion affecting any of its Loans.

          1.07 Borrowings. (a) All Borrowings of Multiple Draw I Term Loans
under this Agreement shall be incurred (1) first, from the Lenders with
Multiple Draw I Sub-Tranche A Term Loan Commitments pro rata on the basis of
their Multiple Draw I Sub-Tranche A Term Loan Commitments, (2) second, to the
extent no Multiple Draw I Sub-Tranche A Term Loan Commitments are outstanding,
from the Lenders with Multiple Draw I Sub-Tranche B Term Loan Commitments pro
rata on the basis of their Multiple Draw I Sub-Tranche B Term Loan Commitments
and (3) third, to the extent no Multiple Draw I Sub-Tranche A Term Loan
Commitments and no Multiple Draw I Sub-Tranche B Term Loan Commitments are
outstanding, from the Lenders with Multiple Draw I Sub-Tranche C Term Loan
Commitments pro rata on the basis of their Multiple Draw I Sub-Tranche C Term
Loan Commitments.

          (b) All Borrowings of Multiple Draw II Term Loans under this
Agreement shall be incurred (1) first, from the Lenders with Multiple Draw II
Sub-Tranche A Term Loan Commitments pro rata on the basis of their Multiple
Draw II Sub-Tranche A Term Loan Commitments, as in effect on the date of the
respective Borrowing and (2) to the extent no Multiple Draw II Sub-Tranche A
Term Loan Commitments are outstanding, from the Lenders with Multiple Draw II
Sub-Tranche B Term Loan Commitments pro rata on the basis of their


                                      -9-
<PAGE>   11

Multiple Draw II Sub-Tranche B Term Loan Commitments, as in effect on the date
of the respective Borrowing.

          (c) All Borrowings of Revolving Loans under this Agreement shall be
incurred from the RL Lenders pro rata on the basis of their Revolving Loan
Commitments.

          1.08 Interest. (a) The Borrower agrees to pay interest in respect of
the unpaid principal amount of each Base Rate Loan from the date of Borrowing
thereof until the earlier of (i) the maturity thereof (whether by acceleration
or otherwise) and (ii) the conversion of such Base Rate Loan to a Eurodollar
Loan pursuant to Section 1.06 or 1.09, as applicable, at a rate per annum which
shall be equal to the sum of the Applicable Margin plus the Base Rate in effect
from time to time.

          (b) The Borrower agrees to pay interest in respect of the unpaid
principal amount of each Eurodollar Loan from the date of Borrowing thereof
until the earlier of (i) the maturity thereof (whether by acceleration or
otherwise) and (ii) the conversion of such Eurodollar Loan to a Base Rate Loan
pursuant to Section 1.06, 1.09 or 1.10, as applicable, at a rate per annum
which shall, during each Interest Period applicable thereto, be equal to the
sum of the Applicable Margin plus the Eurodollar Rate for such Interest Period.

          (c) Overdue principal and, to the extent permitted by law, overdue
interest in respect of each Loan and any other overdue amount payable hereunder
shall, in each case, bear interest at a rate per annum equal to the greater of
(x) the rate which is 2% in excess of the rate then borne by such Loans and (y)
the rate which is 2% in excess of the rate otherwise applicable to Base Rate
Loans of such Tranche from time to time. Interest which accrues under this
Section 1.08(c) shall be payable on demand.

          (d) Accrued (and theretofore unpaid) interest shall be payable (i) in
respect of each Base Rate Loan, quarterly in arrears on each Quarterly Payment
Date, (ii) in respect of each Eurodollar Loan, on the last day of each Interest
Period applicable thereto and, in the case of an Interest Period in excess of
three months, on each date occurring at three month intervals after the first
day of such Interest Period and (iii) in respect of each Loan, on any repayment
or prepayment (on the amount repaid or prepaid), at maturity (whether by
acceleration or otherwise) and, after such maturity, on demand; provided,
however, that in the case of Base Rate Loans of any Tranche, interest shall not
be payable pursuant to preceding clause (iii) at the time of any repayment or
prepayment thereof unless the respective repayment or prepayment is made either
in conjunction with a permanent reduction of the Total Revolving Loan
Commitment (in the case of a repayment or prepayment of Revolving Loans or
Swingline Loans) or with a repayment or prepayment in full of all outstanding
Loans of the respective Tranche.

          (e) Upon each Interest Determination Date, the Administrative Agent
shall determine the Eurodollar Rate for each Interest Period applicable to the
respective Eurodollar Loans and shall promptly notify the Borrower and the
Lenders thereof. Each such determination shall, absent manifest error, be final
and conclusive and binding on all parties hereto.


                                     -10-
<PAGE>   12

          1.09 Interest Periods. At the time the Borrower gives any Notice of
Borrowing or Notice of Conversion in respect of the borrowing of, or conversion
into, any Eurodollar Loan (in the case of the initial Interest Period
applicable thereto) or on the third Business Day prior to the expiration of an
Interest Period applicable to such Eurodollar Loan (in the case of any
subsequent Interest Period), the Borrower shall have the right to elect, by
giving the Administrative Agent notice thereof, the interest period (each an
"Interest Period") applicable to such Eurodollar Loan, which Interest Period
shall, at the option of the Borrower, be a one, two, three or six-month period,
provided that (in each case):

          (i) all Eurodollar Loans comprising a Borrowing shall at all times
     have the same Interest Period;

          (ii) the initial Interest Period for any Eurodollar Loan shall
     commence on the date of Borrowing of such Eurodollar Loan (including the
     date of any conversion thereto from a Base Rate Loan) and each Interest
     Period occurring thereafter in respect of such Eurodollar Loan shall
     commence on the day on which the next preceding Interest Period applicable
     thereto expires;

          (iii) if any Interest Period for a Eurodollar Loan begins on a day
     for which there is no numerically corresponding day in the calendar month
     at the end of such Interest Period, such Interest Period shall end on the
     last Business Day of such calendar month;

          (iv) if any Interest Period for a Eurodollar Loan would otherwise
     expire on a day which is not a Business Day, such Interest Period shall
     expire on the next succeeding Business Day; provided, however, that if any
     Interest Period for a Eurodollar Loan would otherwise expire on a day
     which is not a Business Day but is a day of the month after which no
     further Business Day occurs in such month, such Interest Period shall
     expire on the next preceding Business Day;

          (v) unless the Required Lenders otherwise agree, no Interest Period
     may be selected at any time when a Default or an Event of Default is then
     in existence;

          (vi) no Interest Period in respect of any Borrowing of any Tranche of
     Loans shall be selected which extends beyond the respective Maturity Date
     for such Tranche of Loans;

          (vii) no Interest Period in respect of any Borrowing of Multiple Draw
     I Term Loans or Multiple Draw II Term Loans, as the case may be, shall be
     selected which extends beyond any date upon which a mandatory repayment of
     such Tranche of Term Loans will be required to be made under Section
     4.02(b)(i) or (ii), as the case may be, if the aggregate principal amount
     of Multiple Draw I Term Loans or Multiple Draw II Term Loans, as the case
     may be, which have Interest Periods which will expire after such date will
     be in excess of the aggregate principal amount of Multiple Draw I Term
     Loans or Multiple Draw II Term Loans, as the case may be, then outstanding
     less the aggregate amount of such required repayment; and


                                     -11-
<PAGE>   13

          (viii) no Interest Period may be selected until the earlier of (x)
     the 90th day after the Initial Borrowing Date or (y) the Syndication Date.

          If upon the expiration of any Interest Period applicable to a
Borrowing of Eurodollar Loans, the Borrower has failed to elect, or is not
permitted to elect, a new Interest Period to be applicable to such Eurodollar
Loans as provided above, the Borrower shall be deemed to have elected to
convert such Eurodollar Loans into Base Rate Loans effective as of the
expiration date of such current Interest Period.

          1.10 Increased Costs, Illegality, etc. (a) In the event that any
Lender shall have determined (which determination shall, absent manifest error,
be final and conclusive and binding upon all parties hereto but, with respect
to clause (i) below, may be made only by the Administrative Agent):

          (i) on any Interest Determination Date that, by reason of any changes
     arising after the date of this Agreement affecting the interbank
     Eurodollar market, adequate and fair means do not exist for ascertaining
     the applicable interest rate on the basis provided for in the definition
     of Eurodollar Rate; or

          (ii) at any time, that such Lender shall incur increased costs or
     reductions in the amounts received or receivable hereunder with respect to
     any Eurodollar Loan because of (x) any change since the Effective Date in
     any applicable law or governmental rule, regulation, order, guideline or
     request (whether or not having the force of law) or in the interpretation
     or administration thereof and including the introduction of any new law or
     governmental rule, regulation, order, guideline or request, such as, for
     example, but not limited to: (A) a change in the basis of taxation of
     payment to any Lender of the principal of or interest on the Loans or the
     Notes or any other amounts payable hereunder (except for changes in the
     rate of tax on, or determined by reference to, the net income or profits
     of such Lender pursuant to the laws of the jurisdiction in which it is
     organized or in which its principal office or applicable lending office is
     located or any subdivision thereof or therein) or (B) a change in official
     reserve requirements, but, in all events, excluding reserves required
     under Regulation D to the extent included in the computation of the
     Eurodollar Rate and/or (y) other circumstances arising since the Effective
     Date affecting the interbank Eurodollar market; or

          (iii) at any time, that the making or continuance of any Eurodollar
     Loan has been made (x) unlawful by any law or governmental rule,
     regulation or order, (y) impossible by compliance by any Lender in good
     faith with any governmental request (whether or not having force of law)
     or (z) impracticable as a result of a contingency occurring after the
     Effective Date which materially and adversely affects the interbank
     Eurodollar market;

then, and in any such event, such Lender (or the Administrative Agent, in the
case of clause (i) above) shall promptly give notice (by telephone promptly
confirmed in writing) to the Borrower and, except in the case of clause (i)
above, to the Administrative Agent of such determination (which notice the
Administrative Agent shall promptly transmit to each of the other Lenders).



                                     -12-
<PAGE>   14

Thereafter (x) in the case of clause (i) above, Eurodollar Loans shall no
longer be available until such time as the Administrative Agent notifies the
Borrower and the Lenders that the circumstances giving rise to such notice by
the Administrative Agent no longer exist, and any Notice of Borrowing or Notice
of Conversion given by the Borrower with respect to Eurodollar Loans which have
not yet been incurred (including by way of conversion) shall be deemed
rescinded by the Borrower, (y) in the case of clause (ii) above, the Borrower
shall pay to such Lender, upon such Lender's written request therefor, such
additional amounts (in the form of an increased rate of, or a different method
of calculating, interest or otherwise as such Lender in its sole discretion
shall determine) as shall be required to compensate such Lender for such
increased costs or reductions in amounts received or receivable hereunder (a
written notice as to the additional amounts owed to such Lender, showing in
reasonable detail the basis for the calculation thereof, submitted to the
Borrower by such Lender shall, absent manifest error, be final and conclusive
and binding on all the parties hereto) and (z) in the case of clause (iii)
above, the Borrower shall take one of the actions specified in Section 1.10(b)
as promptly as possible and, in any event, within the time period required by
law.

          (b) At any time that any Eurodollar Loan is affected by the
circumstances described in Section 1.10(a)(ii) or (iii), the Borrower may (and
in the case of a Eurodollar Loan affected by the circumstances described in
Section 1.10(a)(iii) shall) either (x) if the affected Eurodollar Loan is then
being made initially or pursuant to a conversion, cancel such Borrowing by
giving the Administrative Agent telephonic notice (confirmed in writing) on the
same date that the Borrower was notified by the affected Lender or the
Administrative Agent pursuant to Section 1.10(a)(ii) or (iii) or (y) if the
affected Eurodollar Loan is then outstanding, upon at least three Business
Days' written notice to the Administrative Agent, require the affected Lender
to convert such Eurodollar Loan into a Base Rate Loan, provided that, if more
than one Lender is affected at any time, then all affected Lenders must be
treated the same pursuant to this Section 1.10(b).

          (c) If any Lender determines that after the Effective Date the
introduction of or any change in any applicable law or governmental rule,
regulation, order, guideline, directive or request (whether or not having the
force of law) concerning capital adequacy, or any change in interpretation or
administration thereof by the NAIC or any governmental authority, central bank
or comparable agency, will have the effect of increasing the amount of capital
required or expected to be maintained by such Lender or any corporation
controlling such Lender based on the existence of such Lender's Commitments
hereunder or its obligations hereunder, then the Borrower shall pay to such
Lender, upon its written demand therefor, such additional amounts as shall be
required to compensate such Lender or such other corporation for the increased
cost to such Lender or such other corporation or the reduction in the rate of
return to such Lender or such other corporation as a result of such increase of
capital. In determining such additional amounts, each Lender will act
reasonably and in good faith and will use averaging and attribution methods
which are reasonable, provided that such Lender's determination of compensation
owing under this Section 1.10(c) shall, absent manifest error, be final and
conclusive and binding on all the parties hereto. Each Lender, upon determining
that any additional amounts will be payable pursuant to this Section 1.10(c),
will give prompt written notice thereof to the Borrower, which notice shall
show in reasonable detail the basis for calculation of such additional amounts.


                                     -13-
<PAGE>   15

          1.11 Compensation. The Borrower shall compensate each Lender, upon
its written request (which request shall set forth in reasonable detail the
basis for requesting such compensation), for all reasonable losses, expenses
and liabilities (including, without limitation, any loss, expense or liability
incurred by reason of the liquidation or reemployment of deposits or other
funds required by such Lender to fund its Eurodollar Loans but excluding loss
of anticipated profits) which such Lender may sustain: (i) if for any reason
(other than a default by such Lender or the Administrative Agent) a Borrowing
of, or conversion from or into, Eurodollar Loans does not occur on a date
specified therefor in a Notice of Borrowing or Notice of Conversion (whether or
not withdrawn by the Borrower or deemed withdrawn pursuant to Section 1.10(a));
(ii) if any repayment (including any repayment made pursuant to Section 4.01,
Section 4.02 or as a result of an acceleration of the Loans pursuant to Section
10) or conversion of any of its Eurodollar Loans occurs on a date which is not
the last day of an Interest Period with respect thereto; (iii) if any
prepayment of any of its Eurodollar Loans is not made on any date specified in
a notice of prepayment given by the Borrower; or (iv) as a consequence of (x)
any other default by the Borrower to repay its Loans when required by the terms
of this Agreement or any Note held by such Lender or (y) any election made
pursuant to Section 1.10(b).

          1.12 Change of Lending Office. Each Lender agrees that on the
occurrence of any event giving rise to the operation of Section 1.10(a)(ii) or
(iii), Section 1.10(c), Section 2.06 or Section 4.04 with respect to such
Lender, it will, if requested by the Borrower, use reasonable efforts (subject
to overall policy considerations of such Lender) to designate another lending
office for any Loans or Letters of Credit affected by such event, provided that
such designation is made on such terms that such Lender and its lending office
suffer no economic, legal or regulatory disadvantage, with the object of
avoiding the consequence of the event giving rise to the operation of such
Section. Nothing in this Section 1.12 shall affect or postpone any of the
obligations of the Borrower or the right of any Lender provided in Sections
1.10, 2.06 and 4.04.

          1.13 Replacement of Lenders. (x) If any Lender becomes a Defaulting
Lender or otherwise defaults in its obligations to make Loans, (y) upon the
occurrence of an event giving rise to the operation of Section 1.10(a)(ii) or
(iii), Section 1.10(c), Section 2.06 or Section 4.04 with respect to any Lender
which results in such Lender charging to the Borrower increased costs in excess
of those being generally charged by the other Lenders or (z) in the case of a
refusal by a Lender to consent to certain proposed changes, waivers, discharges
or terminations with respect to this Agreement which have been approved by the
Required Lenders as (and to the extent) provided in Section 13.12(b), the
Borrower shall have the right, if no Default or Event of Default then exists
(or, in the case of preceding clause (z), no Default or Event of Default will
exist immediately after giving effect to such replacement), to replace such
Lender (the "Replaced Lender") with one or more other Eligible Transferees,
none of whom shall constitute a Defaulting Lender at the time of such
replacement (collectively, the "Replacement Lender") and each of whom shall be
required to be reasonably acceptable to the Administrative Agent, provided that
(i) at the time of any replacement pursuant to this Section 1.13, the
Replacement Lender shall enter into one or more Assignment and Assumption
Agreements pursuant to Section 13.04(b) (and with all fees payable pursuant to
said Section 13.04(b) to be paid by the Replacement Lender) pursuant to which
the Replacement Lender shall acquire all of the Commitments and outstanding
Loans of, and in each case participations in Letters of Credit by, the Replaced
Lender and, in connection therewith, shall pay to (x) the Replaced Lender in
respect thereof an amount equal to the sum of


                                     -14-
<PAGE>   16

(I) an amount equal to the principal of, and all accrued interest on, all
outstanding Loans of the Replaced Lender, (II) an amount equal to all Unpaid
Drawings that have been funded by (and not reimbursed to) such Replaced Lender,
together with all then unpaid interest with respect thereto at such time, and
(III) an amount equal to all accrued, but theretofore unpaid, Fees owing to the
Replaced Lender pursuant to Section 3.01, (y) the Issuing Lender an amount
equal to such Replaced Lender's RL Percentage of any Unpaid Drawing (which at
such time remains an Unpaid Drawing) to the extent such amount was not
theretofore funded by such Replaced Lender to the Issuing Lender and (z) the
Swingline Lender an amount equal to such Replaced Lender's RL Percentage of any
Mandatory Borrowing to the extent such amount was not theretofore funded by
such Replaced Lender to the Swingline Lender and (ii) all obligations of the
Borrower due and owing to the Replaced Lender at such time (other than those
specifically described in clause (i) above in respect of which the assignment
purchase price has been, or is concurrently being, paid) shall be paid in full
to such Replaced Lender concurrently with such replacement. Upon the execution
of the respective Assignment and Assumption Agreement, the payment of amounts
referred to in clauses (i) and (ii) above and, if so requested by the
Replacement Lender, delivery to the Replacement Lender of the appropriate Note
or Notes executed by the Borrower, the Replacement Lender shall become a Lender
hereunder and the Replaced Lender shall cease to constitute a Lender hereunder,
except with respect to indemnification provisions under this Agreement
(including, without limitation, Sections 1.10, 1.11, 2.06, 4.04, 12.06 and
13.01), which shall survive as to such Replaced Lender.

          1.14 Multiple Draw II Term Loan Commitments. So long as no Default or
Event of Default then exists or would result therefrom, the Borrower shall, in
consultation with the Administrative Agent, have the right to request on one or
more occasions that one or more Lenders (and/or one or more other Persons which
will become Lenders as provided below) provide Multiple Draw II Sub-Tranche A
Term Loan Commitments and/or Multiple Draw II Sub-Tranche B Term Loan
Commitments and, subject to the applicable terms and conditions contained in
this Agreement and the relevant Multiple Draw II Term Loan Commitment
Agreement, make Multiple Draw II Term Loans pursuant thereto, it being
understood and agreed, however, that (i) no Lender shall be obligated to
provide a Multiple Draw II Term Loan Commitment as a result of any request by
the Borrower, and until such time, if any, as such Lender has agreed in its
sole discretion to provide a Multiple Draw II Term Loan Commitment and executed
and delivered to the Administrative Agent a Multiple Draw II Term Loan
Commitment Agreement as provided in the immediately succeeding sentence, such
Lender shall not be obligated to fund any Multiple Draw II Term Loans, (ii) any
Lender (or, in the circumstances contemplated by clause (viii) below, any other
Person which will qualify as an Eligible Transferee) may so provide a Multiple
Draw II Term Loan Commitment without the consent of any other Lender, (iii)
each provision of Multiple Draw II Term Loan Commitments pursuant to this
Section 1.14 on a given date, and the amount of each Multiple Draw II Term Loan
Sub-Facility, shall be in a minimum aggregate amount (for all Lenders
(including, in the circumstances contemplated by clause (viii) below, Eligible
Transferees who will become Lenders)) of at least $5,000,000, (iv) the
aggregate amount of all Multiple Draw II Term Loan Commitments permitted to be
provided pursuant to this Section 1.14 and the aggregate principal amount of
Multiple Draw II Term Loans permitted to be made pursuant to Section 1.01(b)
shall not, in either case, exceed $50,000,000, (v) the maturity date and the
scheduled amortization of


                                     -15-
<PAGE>   17

the Multiple Draw II Term Loans under a Multiple Draw II Term Loan Sub-Facility
shall be as set forth in the Multiple Draw II Term Loan Commitment Agreement
for such Multiple Draw II Term Loan Sub-Facility, provided that no Multiple
Draw II Term Loan shall or have a Weighted Average Life to Maturity less than
the Weighted Average Life to Maturity of the Multiple Draw I Term Loans, (vi)
the interest rate, facility fees, commitment commission and other amounts
payable in respect of the Multiple Draw II Term Loan Commitments and Multiple
Draw II Term Loans under a Multiple Draw II Term Loan Sub-Facility shall be as
set forth in the Multiple Draw II Term Loan Commitment Agreement for such
Multiple Draw II Term Loan Sub-Facility, provided that any such interest rate
shall be expressed as a margin in excess of the Base Rate or Eurodollar Rate,
as the case may be, (vii) the relevant Multiple Draw II Term Loan Commitment
Agreements for any Multiple Draw II Term Loan Sub-Facility shall specifically
set forth whether the Multiple Draw II Term Loan Commitments in respect thereof
shall constitute either Multiple Draw II Sub-Tranche A Term Loan Commitments or
Multiple Draw II Sub-Tranche B Term Loan Commitments (with all of the
Commitments to be provided in respect of any Multiple Draw II Term Loan
Sub-Facility to be of the same Tranche), (viii) if, after the Borrower has
requested the then existing Lenders (other than Defaulting Lenders) to provide
Multiple Draw II Term Loan Commitments pursuant to this Section 1.14 on the
terms to be applicable to the respective Multiple Draw II Term Loan
Sub-Facility, the Borrower has not received Multiple Draw Term Loan Commitments
in an aggregate amount equal to that amount of Multiple Draw II Term Loan
Commitments which the Borrower desires to obtain pursuant to such request (as
set forth in the notice provided by the Borrower as provided below), then the
Borrower may, with the consent of the Administrative Agent (which consent shall
not be unreasonably withheld), request Multiple Draw II Term Loan Commitments
from Persons which would qualify as Eligible Transferees hereunder in aggregate
amount equal to such deficiency on terms which are no more favorable to such
Eligible Transferee in any respect than the terms offered to the Lenders,
provided that any such Multiple Draw II Term Loan Commitments provided by any
such Eligible Transferee which is not already a Lender shall be in a minimum
amount (for such Eligible Transferee) of at least $5,000,000, and (ix) all
actions taken by the Borrower pursuant to this Section 1.14 shall be done in
coordination with the Administrative Agent. At the time of any provision of
Multiple Draw II Term Loan Commitments pursuant to this Section 1.14, (i) the
Borrower, the Administrative Agent and each such Lender or other Eligible
Transferee (each a "Multiple Draw II Term Loan Lender") which agrees to provide
a Multiple Draw II Term Loan Commitment shall execute and deliver to the
Administrative Agent a Multiple Draw II Term Loan Commitment Agreement
substantially in the form of Exhibit C, subject to such modifications in form
and substance satisfactory to the Administrative Agent as may be necessary or
appropriate in the case of any Multiple Draw II Term Loan Sub-Facility (with
the effectiveness of such Multiple Draw II Term Loan Lender's Multiple Draw II
Term Loan Commitment to occur upon delivery of such Multiple Draw II Term Loan
Commitment Agreement to the Administrative Agent and the payment of any fees
(including, without limitation, any fees payable pursuant to clause (ii) below)
required in connection therewith), (ii) the Administrative Agent shall receive
from the Borrower (or, to the extent agreed to by the Borrower and the
respective Multiple Draw II Term Loan Lender, from such respective Multiple
Draw II Term Loan Lender) the payment of a non-refundable fee of $3,500 for
each Lender (including any Eligible Transferee which becomes a Lender)
providing a new (or increased) Multiple Draw II Term Loan Commitment and (iii)
the Borrower shall deliver to the Administrative Agent an opinion, in form and
substance satisfactory to the Agents, from 


                                     -16-
<PAGE>   18

counsel to the Borrower satisfactory to the Agents and dated such date,
covering such matters similar to those set forth in the opinion of counsel
delivered to the Administrative Agent on the Initial Borrowing Date pursuant to
Section 5.03 and such other matters as the Agents may reasonably request. The
Administrative Agent shall promptly notify each Lender as to the occurrence of
each Multiple Draw II Term Loan Commitment Date, and (i) on each such date
Schedule I shall be deemed modified to reflect the Multiple Draw II Sub-Tranche
A Term Loan Commitments and/or Multiple Draw II Sub-Tranche B Term Loan
Commitments, as the case may be, of such Multiple Draw Term Loan Lenders and
(ii) to the extent requested by such Multiple Draw II Term Loan Lenders,
Multiple Draw II Term Notes will be issued, at the Borrower's expense, to such
Multiple Draw II Term Loan Lenders, to be in conformity with the requirements
of Section 1.05 (with appropriate modifications) to the extent needed to
reflect the new Multiple Draw II Term Loan Commitments.

          SECTION 2. Letters of Credit.

          2.01 Letters of Credit. (a) Subject to and upon the terms and
conditions set forth herein, the Borrower may request that the Issuing Lender
issue, at any time and from time to time on and after the Initial Borrowing
Date and prior to the 30th day prior to the Multiple Draw I/Revolver Maturity
Date, for the account of the Borrower and for the benefit of (x) any holder (or
any trustee, agent or other similar representative for any such holders) of L/C
Supportable Obligations of the Borrower or any of its Subsidiaries, an
irrevocable standby letter of credit, in a form customarily used by the Issuing
Lender or in such other form as has been approved by the Issuing Lender and (y)
sellers of goods to the Borrower or any of its Subsidiaries, an irrevocable
trade letter of credit, in a form customarily used by the Issuing Lender or in
such other form as has been approved by such Issuing Lender (each such letter
of credit, a "Letter of Credit" and, collectively, the "Letters of Credit").
All Letters of Credit shall be denominated in Dollars and shall be issued on a
sight basis only.

          (b) Subject to and upon the terms and conditions set forth herein,
the Issuing Lender agrees that it will, at any time and from time to time on
and after the Initial Borrowing Date and prior to the 30th day prior to the
Multiple Draw I/Revolver Maturity Date, following its receipt of the respective
Letter of Credit Request, issue for the account of the Borrower, one or more
Letters of Credit as are permitted to remain outstanding hereunder without
giving rise to a Default or an Event of Default, provided that the Issuing
Lender shall be under no obligation to issue any Letter of Credit of the types
described above if at the time of such issuance:

          (i) any order, judgment or decree of any governmental authority or
     arbitrator shall purport by its terms to enjoin or restrain the Issuing
     Lender from issuing such Letter of Credit or any requirement of law
     applicable to the Issuing Lender or any request or directive (whether or
     not having the force of law) from any governmental authority with
     jurisdiction over the Issuing Lender shall prohibit, or request that the
     Issuing Lender refrain from, the issuance of letters of credit generally
     or such Letter of Credit in particular or shall impose upon the Issuing
     Lender with respect to such Letter of Credit any restriction or reserve or
     capital requirement (for which the Issuing Lender is not otherwise
     compensated) not in effect with respect to the Issuing Lender on the date
     hereof, or any unreimbursed loss, cost or expense which was not applicable
     or in effect with respect to 


                                     -17-
<PAGE>   19

     the Issuing Lender as of the date hereof and which the Issuing Lender
     reasonably and in good faith deems material to it; or

          (ii) the Issuing Lender shall have received notice, from the Borrower
     or the Required Lenders prior to the issuance of such Letter of Credit, of
     the type described in the second sentence of Section 2.03(b).

          2.02 Maximum Letter of Credit Outstandings; Final Maturities.
Notwithstanding anything to the contrary contained in this Agreement, (i) no
Letter of Credit shall be issued the Stated Amount of which, when added to the
Letter of Credit Outstandings (exclusive of Unpaid Drawings which are repaid on
the date of, and prior to the issuance of, the respective Letter of Credit) at
such time would exceed either (x) $10,000,000 or (y) when added to the sum of
(I) the aggregate principal amount of all Revolving Loans then outstanding and
(II) the aggregate principal amount of all Swingline Loans then outstanding, an
amount equal to the Total Available Revolving Loan Commitment and (ii) each
Letter of Credit shall by its terms terminate on or before the earlier of (x)
in the case of standby Letters of Credit, (A) the date which occurs 12 months
after the date of the issuance thereof (although any such standby Letter of
Credit may be extendible for successive periods of up to 12 months, but, in
each case, not beyond the tenth Business Day prior to the Multiple Draw
I/Revolver Maturity Date, on terms acceptable to the Issuing Lender) and (B)
the tenth Business Day prior to the Multiple Draw I/Revolver Maturity Date and
(y) in the case of trade Letters of Credit, (A) the date which occurs 180 days
after the date of issuance thereof, and (B) 30 days prior to the Multiple Draw
I/Revolver Maturity Date.

          2.03 Letter of Credit Requests; Minimum Stated Amount. (a) Whenever
the Borrower desires that a Letter of Credit be issued for its account, the
Borrower shall give the Administrative Agent and the Issuing Lender at least
five Business Days' (or such shorter period as is acceptable to the Issuing
Lender) written notice thereof. Each notice shall be in the form of Exhibit D
(each a "Letter of Credit Request").

          (b) The making of each Letter of Credit Request shall be deemed to be
a representation and warranty by the Borrower that such Letter of Credit may be
issued in accordance with, and will not violate the requirements of, Section
2.02. Unless the Issuing Lender has received notice from the Borrower or the
Required Lenders before it issues a Letter of Credit that one or more of the
conditions specified in Section 5 or 6 are not then satisfied, or that the
issuance of such Letter of Credit would violate Section 2.02, then the Issuing
Lender shall, subject to the terms and conditions of this Agreement, issue the
requested Letter of Credit for the account of the Borrower in accordance with
the Issuing Lender's usual and customary practices. Upon the issuance of or
modification or amendment to any standby Letter of Credit, the Issuing Lender
shall promptly notify the Borrower, the Administrative Agent and each
Participant of such issuance, modification or amendment, as the case may be.
Notwithstanding anything to the contrary contained in this Agreement, in the
event that a Lender Default exists, the Issuing Lender shall not be required to
issue any Letter of Credit unless the Issuing Lender has entered into
arrangements satisfactory to it and the Borrower to eliminate the Issuing
Lender's risk with respect to the participation in Letters of Credit by the
Defaulting Lender or Lenders, including by cash collateralizing such Defaulting
Lender's or Lenders' RL Percentage of the Letter of Credit Outstandings.


                                     -18-
<PAGE>   20

          (c) The initial Stated Amount of each Letter of Credit shall not be
less than $100,000 or such lesser amount as is acceptable to the Issuing
Lender.

          2.04 Letter of Credit Participations. (a) Immediately upon the
issuance by the Issuing Lender of any Letter of Credit, the Issuing Lender
shall be deemed to have sold and transferred to each RL Lender, other than the
Issuing Lender (each such Lender, in its capacity under this Section 2.04, a
"Participant"), and each such Participant shall be deemed irrevocably and
unconditionally to have purchased and received from the Issuing Lender, without
recourse or warranty, an undivided interest and participation, to the extent of
such Participant's RL Percentage, in such Letter of Credit, each drawing or
payment made thereunder and the obligations of the Borrower under this
Agreement with respect thereto, and any security therefor or guaranty
pertaining thereto. Upon any change in the Revolving Loan Commitments or RL
Percentages of the Lenders pursuant to Section 1.13 or 13.04, it is hereby
agreed that, with respect to all outstanding Letters of Credit and Unpaid
Drawings with respect thereto, there shall be an automatic adjustment to the
participations pursuant to this Section 2.04 to reflect the new RL Percentages
of the assignor and assignee Lender, as the case may be.

          (b) In determining whether to pay under any Letter of Credit, the
Issuing Lender shall not have an obligation relative to the other Lenders other
than to confirm that any documents required to be delivered under such Letter
of Credit appear to have been delivered and that they appear to substantially
comply on their face with the requirements of such Letter of Credit. Any action
taken or omitted to be taken by the Issuing Lender under or in connection with
any Letter of Credit shall not create for the Issuing Lender any resulting
liability to the Borrower, any other Credit Party, any Lender or any other
Person unless such action is taken or omitted with gross negligence or willful
misconduct (as finally determined by a court of competent jurisdiction).

          (c) In the event that the Issuing Lender makes any payment under any
Letter of Credit and the Borrower shall not have reimbursed such amount in full
to the Issuing Lender pursuant to Section 2.05(a), the Issuing Lender shall
promptly notify the Administrative Agent, which shall promptly notify each
Participant of such failure, and each Participant shall promptly and
unconditionally pay to the Issuing Lender the amount of such Participant's RL
Percentage of such unreimbursed payment in Dollars and in same day funds. If
the Administrative Agent so notifies, prior to 11:00 A.M. (New York City time)
on any Business Day, any Participant required to fund a payment under a Letter
of Credit, such Participant shall make available to the Issuing Lender in
Dollars such Participant's RL Percentage of the amount of such payment on such
Business Day in same day funds. If and to the extent such Participant shall not
have so made its RL Percentage of the amount of such payment available to the
Issuing Lender, such Participant agrees to pay to the Issuing Lender, forthwith
on demand such amount, together with interest thereon, for each day from such
date until the date such amount is paid to the Issuing Lender at the overnight
Federal Funds Rate for the first three days and at the interest rate applicable
to Revolving Loans maintained as Base Rate Loans for each day thereafter. The
failure of any Participant to make available to the Issuing Lender its RL
Percentage of any payment under any Letter of Credit shall not relieve any
other Participant of its obligation hereunder to make available to the Issuing
Lender its RL Percentage of any payment under any Letter of Credit on the date
required, as specified above, but no Participant shall be responsible for the
failure of any


                                     -19-
<PAGE>   21

other Participant to make available to the Issuing Lender such other
Participant's RL Percentage of any such payment.

          (d) Whenever the Issuing Lender receives a payment of a reimbursement
obligation as to which it has received any payments from the Participants
pursuant to clause (c) above, the Issuing Lender shall pay to each such
Participant which has paid its RL Percentage thereof, in Dollars and in same
day funds, an amount equal to such Participant's share (based upon the
proportionate aggregate amount originally funded by such Participant to the
aggregate amount funded by all Participants) of the principal amount of such
reimbursement obligation and interest thereon accruing after the purchase of
the respective participations.

          (e) Upon the request of any Participant, the Issuing Lender shall
furnish to such Participant copies of any Letter of Credit issued by it and
such other documentation as may reasonably be requested by such Participant.

          (f) The obligations of the Participants to make payments to the
Issuing Lender with respect to Letters of Credit issued by it shall be
irrevocable and not subject to any qualification or exception whatsoever and
shall be made in accordance with the terms and conditions of this Agreement
under all circumstances, including, without limitation, any of the following
circumstances:

          (i) any lack of validity or enforceability of this Agreement or any
     of the other Credit Documents;

          (ii) the existence of any claim, setoff, defense or other right which
     the Borrower or any of its Subsidiaries may have at any time against a
     beneficiary named in a Letter of Credit, any transferee of any Letter of
     Credit (or any Person for whom any such transferee may be acting), any
     Agent, any Participant, any other Lender or any other Person, whether in
     connection with this Agreement, any Letter of Credit, the transactions
     contemplated herein or any unrelated transactions (including any
     underlying transaction between the Borrower or any Subsidiary of the
     Borrower and the beneficiary named in any such Letter of Credit);

          (iii) any draft, certificate or any other document presented under
     any Letter of Credit proving to be forged, fraudulent, invalid or
     insufficient in any respect or any statement therein being untrue or
     inaccurate in any respect; (iv) the surrender or impairment of any
     security for the performance or observance of any of the terms of any of
     the Credit Documents; or

          (v) the occurrence of any Default or Event of Default.

          2.05 Agreement to Repay Letter of Credit Drawings. (a) The Borrower
agrees to reimburse the Issuing Lender, by making payment to the Administrative
Agent in immediately available funds at the Payment Office, for any payment or
disbursement made by the Issuing Lender under any Letter of Credit (each such
amount, so paid until reimbursed, an "Unpaid Drawing"), not later than one
Business Day following receipt by the Borrower of notice of such


                                     -20-
<PAGE>   22

payment or disbursement (provided that no such notice shall be required to be
given if a Default or an Event of Default under Section 10.05 shall have
occurred and be continuing, in which case the Unpaid Drawing shall be due and
payable immediately without presentment, demand, protest or notice of any kind
(all of which are hereby waived by the Borrower)), with interest on the amount
so paid or disbursed by the Issuing Lender, to the extent not reimbursed prior
to 12:00 Noon (New York City time) on the date of such payment or disbursement,
from and including the date paid or disbursed to but excluding the date the
Issuing Lender was reimbursed by the Borrower therefor at a rate per annum
equal to the Base Rate in effect from time to time plus the Applicable Margin
for Revolving Loans maintained as Base Rate Loans; provided, however, to the
extent such amounts are not reimbursed prior to 12:00 Noon (New York City time)
on the third Business Day following the receipt by the Borrower of notice of
such payment or disbursement or following the occurrence of a Default or an
Event of Default under Section 10.05, interest shall thereafter accrue on the
amounts so paid or disbursed by the Issuing Lender (and until reimbursed by the
Borrower) at a rate per annum equal to the Base Rate in effect from time to
time plus the Applicable Margin for Revolving Loans maintained as Base Rate
Loans plus 2%, with interest to be payable on demand. The Issuing Lender shall
give the Borrower prompt written notice of each Drawing under any Letter of
Credit, provided that the failure to give any such notice shall in no way
affect, impair or diminish the Borrower's obligations hereunder.

          (b) The obligations of the Borrower under this Section 2.05 to
reimburse the Issuing Lender with respect to drawings under Letters of Credit
(each a "Drawing") (including, in each case, interest thereon) shall be
absolute and unconditional under any and all circumstances and irrespective of
any setoff, counterclaim or defense to payment which the Borrower or any
Subsidiary of the Borrower may have or have had against any Lender (including
in its capacity as the Issuing Lender or as a Participant), including, without
limitation, any defense based upon the failure of any drawing under a Letter of
Credit to conform to the terms of the Letter of Credit or any nonapplication or
misapplication by the beneficiary of the proceeds of such Drawing; provided,
however, that the Borrower shall not be obligated to reimburse the Issuing
Lender for any wrongful payment made by the Issuing Lender under a Letter of
Credit as a result of acts or omissions constituting willful misconduct or
gross negligence on the part of the Issuing Lender (as finally determined by
court of competent jurisdiction).

          2.06 Increased Costs. If at any time after the Effective Date, the
introduction of or any change in any applicable law, rule, regulation, order,
guideline or request or in the interpretation or administration thereof by the
NAIC or any governmental authority charged with the interpretation or
administration thereof, or compliance by the Issuing Lender or any Participant
with any request or directive by the NAIC or by any such authority (whether or
not having the force of law), shall either (i) impose, modify or make
applicable any reserve, deposit, capital adequacy or similar requirement
against letters of credit issued by the Issuing Lender or participated in by
any Participant or (ii) impose on the Issuing Lender or any Participant any
other conditions relating, directly or indirectly, to this Agreement or any
Letter of Credit or such Participant's participation therein; and the result of
any of the foregoing is to increase the cost to the Issuing Lender or any
Participant of issuing, maintaining or participating in any Letter of Credit or
reduce the amount of any sum received or receivable by the Issuing Lender or
any Participant hereunder or reduce the rate of return on its capital with
respect to Letters of Credit (except for changes in the rate of tax on, or
determined by reference to, the net income or profits


                                     -21-
<PAGE>   23

of the Issuing Lender or such Participant pursuant to the laws of the
jurisdiction in which it is organized or in which its principal office or
applicable lending office is located or any subdivision thereof or therein),
then, upon the delivery of the certificate referred to below to the Borrower by
the Issuing Lender or any Participant (a copy of which certificate shall be
sent by the Issuing Lender or such Participant to the Administrative Agent),
the Borrower shall pay to the Issuing Lender or such Participant such
additional amount or amounts as will compensate such Lender for such increased
cost or reduction in the amount receivable or reduction on the rate of return
on its capital. The Issuing Lender or any Participant, upon determining that
any additional amounts will be payable pursuant to this Section 2.06, will give
prompt written notice thereof to the Borrower, which notice shall include a
certificate submitted to the Borrower by the Issuing Lender or such Participant
(a copy of which certificate shall be sent by the Issuing Lender or such
Participant to the Administrative Agent), setting forth in reasonable detail
the basis for the calculation of such additional amount or amounts necessary to
compensate the Issuing Lender or such Participant. The certificate required to
be delivered pursuant to this Section 2.06 shall, absent manifest error, be
final and conclusive and binding on the Borrower.

          SECTION 3. Commitment Commission; Fees; Reductions of Commitment.

          3.01 Fees. (a) The Borrower agrees to pay to the Administrative Agent
for distribution to each Non-Defaulting Lender with a Multiple Draw I
Sub-Tranche B Term Loan Commitment a commitment commission (the "Multiple Draw
I Sub-Tranche B Commitment Commission") for the period from and including the
Effective Date to but excluding the Multiple Draw I/Revolver Maturity Date (or
such earlier date on which the Total Multiple Draw I Sub-Tranche B Term Loan
Commitment has been terminated) computed at a rate for each day equal to 1.75%
on the daily Multiple Draw I Sub-Tranche B Term Loan Commitment of such
Non-Defaulting Lender. Accrued Multiple Draw I Sub-Tranche B Commitment
Commission shall be due and payable quarterly in arrears on each Quarterly
Payment Date and on the date upon which the Total Multiple Draw I Sub-Tranche B
Term Loan Commitment has been terminated.

          (b) The Borrower agrees to pay to the Administrative Agent for
distribution to each Non-Defaulting Lender with a Multiple Draw I Sub-Tranche C
Term Loan Commitment a commitment commission (the "Multiple Draw I Sub-Tranche
C Commitment Commission") for the period from and including the Effective Date
to but excluding the Multiple Draw I/Revolver Maturity Date (or such earlier
date on which the Total Multiple Draw I Sub-Tranche C Term Loan Commitment has
been terminated) computed at a rate for each day equal to 1.50% on the daily
Multiple Draw I Sub-Tranche C Term Loan Commitment of such Non-Defaulting
Lender. Accrued Multiple Draw I Sub-Tranche C Commitment Commission shall be
due and payable quarterly in arrears on each Quarterly Payment Date and on the
date upon which the Total Multiple Draw I Sub-Tranche C Term Loan Commitment
has been terminated.

          (c) The Borrower agrees to pay to the Administrative Agent for
distribution to each Non-Defaulting RL Lender a commitment commission (the "RL
Commitment Commission") for the period from and including the Effective Date to
but excluding the Multiple Draw I/Revolver Maturity Date (or such earlier date
on which the Total Revolving Loan Commitment has been terminated) computed at a
rate for each day equal to the Applicable RL Commitment Commission Percentage
on the daily Unutilized Revolving Loan Commitment of such


                                     -22-
<PAGE>   24

Non-Defaulting Lender. Accrued RL Commitment Commission shall be due and
payable quarterly in arrears on each Quarterly Payment Date and on the date
upon which the Total Revolving Loan Commitment has been terminated.

          (d) The Borrower agrees to pay to the Administrative Agent for
distribution to each Non-Defaulting Multiple Draw II Term Loan Lender with a
Multiple Draw II Term Loan Commitment under a Multiple Draw II Term Loan
Sub-Facility such facility fees, commitment commission and other amounts, if
any, as are specified in the Multiple Draw II Term Loan Commitment Agreement
for the respective Multiple Draw II Term Loan Sub-Facility, with such facility
fees, commitment commission and other amounts, if any, to be payable at the
times set forth in such Multiple Draw II Term Loan Commitment Agreement.

          (e) The Borrower agrees to pay to the Administrative Agent for
distribution to each RL Lender (based on each such RL Lender's respective RL
Percentage) a fee in respect of each Letter of Credit (the "Letter of Credit
Fee") for the period from and including the date of issuance of such Letter of
Credit to and including the date of termination or expiration of such Letter of
Credit, computed at a rate per annum equal to the Applicable Margin then in
effect with respect to Revolving Loans that are maintained as Eurodollar Loans
on the daily Stated Amount of each such Letter of Credit. Accrued Letter of
Credit Fees shall be due and payable quarterly in arrears on each Quarterly
Payment Date and on the first day on or after the termination of the Total
Revolving Loan Commitment upon which no Letters of Credit remain outstanding.

          (f) The Borrower agrees to pay to the Issuing Lender, for its own
account, a facing fee in respect of each Letter of Credit (the "Facing Fee")
for the period from and including the date of issuance of such Letter of Credit
to and including the date of termination or expiration of such Letter of
Credit, computed at a rate equal to 1/4 of 1% per annum on the daily Stated
Amount of such Letter of Credit, provided that in any event the minimum amount
of the Facing Fee payable in any 12 month period for each Letter of Credit
shall be $500; it being agreed that, on the date of issuance of any Letter of
Credit and on each anniversary thereof prior to the termination of such Letter
of Credit, if $500 will exceed the amount of Facing Fees that will accrue with
respect to such Letter of Credit for the immediately succeeding 12 month
period, the full $500 shall be payable on the date of issuance of such Letter
of Credit and on each such anniversary thereof. Except as otherwise provided in
the proviso to the immediately preceding sentence, accrued Facing Fees shall be
due and payable quarterly in arrears on each Quarterly Payment Date and upon
the first day on or after the termination of the Total Revolving Loan
Commitment upon which no Letters of Credit remain outstanding.

          (g) The Borrower agrees to pay to the Issuing Lender, for its own
account, upon each payment under, issuance of, or amendment to, any Letter of
Credit, such amount as shall at the time of such event be the administrative
charge and the reasonable expenses which the Issuing Lender is generally
imposing in connection with such occurrence with respect to letters of credit.

          (h) The Borrower agrees to pay to each Agent, for its respective
account, such other fees as have been agreed to in writing by the Borrower and
such Agent.


                                     -23-
<PAGE>   25

          3.02 Voluntary Termination of Multiple Draw I Term Loan Commitments,
Multiple Draw II Term Loan Commitments, Unutilized Revolving Loan Commitments.
(a) At any time after the Initial Borrowing Date and prior to the termination
of the Total Multiple Draw I Term Loan Commitment, upon at least three Business
Days' prior written notice to the Administrative Agent at the Notice Office
(which notice the Administrative Agent shall promptly transmit to each of the
Lenders), the Borrower shall have the right, at any time or from time to time,
without premium or penalty, to terminate the Total Multiple Draw I Term Loan
Commitment then in effect, in whole or in part, pursuant to this Section
3.02(a), in a minimum amount of $1,000,000, or an integral multiple of
$1,000,000 in excess thereof in the case of partial reductions to the Total
Multiple Draw I Term Loan Commitment, provided that each such reduction shall
apply (1) first, proportionately to permanently reduce the Multiple Draw I
Sub-Tranche C Term Loan Commitment of each Lender with such a Commitment, (2)
second, to the extent the amount of the reduction to the Total Multiple Draw I
Term Loan Commitment exceeds the Total Multiple Draw I Sub-Tranche C Term Loan
Commitment as in effect immediately before the respective reduction,
proportionately to permanently reduce the Multiple Draw I Sub-Tranche B Term
Loan Commitment of each such Lender with such a Commitment and (3) third, to
the extent the amount of the reduction to the Total Multiple Draw I Term Loan
Commitment exceeds the sum of the Total Multiple Draw I Sub-Tranche C Term Loan
Commitment and the Total Multiple Draw I Sub-Tranche B Term Loan Commitment as
in effect immediately before the respective reduction, proportionately to
permanently reduce the Multiple Draw I Sub-Tranche A Term Loan Commitment of
each Lender with such a Commitment.

          (b) At any time after any Multiple Draw II Term Loan Commitments have
been provided pursuant to Section 1.14, and prior to the termination of the
Total Multiple Draw II Term Loan Commitment, upon at least three Business Days'
prior written notice to the Administrative Agent at the Notice Office (which
notice the Administrative Agent shall promptly transmit to each of the
Lenders), the Borrower shall have the right, at any time or from time to time,
without premium or penalty, to terminate the Total Multiple Draw II Term Loan
Commitment then in effect, in whole or in part, pursuant to this Section
3.02(b), in a minimum amount of $1,000,000, or an integral multiple of
$1,000,000 in excess thereof in the case of partial reductions to the Total
Multiple Draw II Term Loan Commitment, provided that each such reduction shall
apply (1) first, proportionately to permanently reduce the Multiple Draw II
Sub-Tranche B Term Loan Commitment of each Lender with such a Commitment and
(2) second, to the extent the amount of the reduction to the Total Multiple
Draw II Term Loan Commitment exceeds the Total Multiple Draw II Sub-Tranche B
Term Loan Commitment as in effect immediately before the respective reduction,
proportionately to permanently reduce the Multiple Draw II Sub-Tranche A Term
Loan Commitment of each Lender with such a Commitment.

          (c) Upon at least three Business Days' prior written notice to the
Administrative Agent at the Notice Office (which notice the Administrative
Agent shall promptly transmit to each of the Lenders), the Borrower shall have
the right, at any time or from time to time, without premium or penalty, to
terminate the Total Unutilized Revolving Loan Commitment, in whole or in part,
pursuant to this Section 3.02(c), in an integral multiple of $1,000,000 in the
case of partial reductions to the Total Unutilized Revolving Loan Commitment,
provided that each such reduction shall apply proportionately to permanently
reduce the Revolving Loan Commitment of each RL Lender.


                                     -24-
<PAGE>   26

          (d) In the event of a refusal by a Lender to consent to certain
proposed changes, waivers, discharges or terminations with respect to this
Agreement which have been approved by the Required Lenders as (and to the
extent) provided in Section 13.12(b), the Borrower may, subject to its
compliance with the requirements of Section 13.12(b), upon five Business Days'
prior written notice to the Administrative Agent at the Notice Office (which
notice the Administrative Agent shall promptly transmit to each of the Lenders)
terminate all of the Commitments of such Lender, so long as all Loans, together
with accrued and unpaid interest, Fees and all other amounts, owing to such
Lender are repaid concurrently with the effectiveness of such termination
pursuant to Section 4.01(b) (at which time Schedule I shall be deemed modified
to reflect such changed amounts) and such Lender's RL Percentage of all
outstanding Letters of Credit is cash collateralized in a manner satisfactory
to the Administrative Agent and the Issuing Lender, and at such time, such
Lender shall no longer constitute a "Lender" for purposes of this Agreement,
except with respect to indemnifications under this Agreement (including,
without limitation, Sections 1.10, 1.11, 2.06, 4.04, 12.06 and 13.01), which
shall survive as to such repaid Lender.

          3.03 Mandatory Reduction of Commitments. (a) The Total Commitment
(and the Commitments of each Lender) shall terminate in its entirety on May 15,
1999 unless the Initial Borrowing Date has occurred on or before such date.

          (b) In addition to any other mandatory commitment reductions pursuant
to this Section 3.03, the Total Multiple Draw I Sub-Tranche A Term Loan
Commitment (and the Multiple Draw I Sub-Tranche A Term Loan Commitment of each
Lender) shall terminate in its entirety on the Initial Borrowing Date (after
giving effect to the making of Multiple Draw I Sub-Tranche A Term Loans on such
date).

          (c) In addition to any other mandatory commitment reductions pursuant
to this Section 3.03, the Total Multiple Draw I Term Loan Commitment shall (i)
be reduced on each Multiple Draw I Sub-Tranche B Term Loan Borrowing Date and
each Multiple Draw Sub-Tranche C Term Loan Borrowing Date (in each case, after
giving effect to the making of Multiple Draw I Term Loans on each such date) in
an amount equal to the aggregate principal amount of Multiple Draw I
Sub-Tranche B Term Loans and Multiple Draw I Sub-Tranche C Term Loans incurred
on each such date, (ii) terminate in its entirety (to the extent not
theretofore terminated) on the earlier of (x) 5:00 P.M. (New York City time) on
the Multiple Draw I Term Loan Commitment Termination Date, whether or not any
Multiple Draw I Term Loans are incurred on such date, (y) the Initial Multiple
Draw II Term Loan Borrowing Date (after giving effect to the making of any
Multiple Draw I Term Loans on such date) and (z) unless the Required Lenders
otherwise agree, the date on which a Change of Control occurs, and (iii) be
reduced from time to time to the extent required by Section 4.02.

          (d) In addition to any other mandatory commitment reductions pursuant
to this Section 3.03, the Total Multiple Draw II Term Loan Commitment shall (i)
be reduced on each Multiple Draw II Term Loan Borrowing Date (after giving
effect to the making of Multiple Draw II Term Loans on each such date) in an
amount equal to the aggregate principal amount of Multiple Draw II Term Loans
incurred on each such date, (ii) unless the Required Lenders otherwise agree,
terminate in its entirety (to the extent not theretofore terminated) on the
date on


                                     -25-
<PAGE>   27

which a Change of Control occurs, and (iii) be reduced from time to time to the
extent required by Section 4.02.

          (e) In addition to any other mandatory commitment reductions pursuant
to this Section 3.03, the Total Revolving Loan Commitment (and the Revolving
Loan Commitment of each Lender) shall terminate in its entirety on the earlier
of (i) the date on which a Change of Control occurs unless the Required Lenders
otherwise agree and (ii) the Multiple Draw I/Revolver Maturity Date.

          (f) In addition to any other mandatory commitment reductions pursuant
to this Section 3.03, on each date after the Initial Borrowing Date upon which
a mandatory repayment of Term Loans, a mandatory reduction to the Total
Multiple Draw I Term Loan Commitment and/or a mandatory reduction to the Total
Multiple Draw II Term Loan Commitment, in each such case pursuant to any of
Sections 4.02(c) through (g), inclusive, is required (and exceeds the sum of
(I) the aggregate principal amount of Term Loans then outstanding, (II) the
Total Multiple Draw I Term Loan Commitment then in effect and (III) the Total
Multiple Draw II Term Loan Commitment then in effect) or would be required if
Term Loans were then outstanding and/or the Total Multiple Draw I Term Loan
Commitment or the Total Multiple Draw II Term Loan Commitment was then in
effect in an amount greater than $0, the Total Revolving Loan Commitment shall
be permanently reduced by the amount, if any, by which the amount required to
be applied pursuant to said Sections (determined as if an unlimited amount of
Term Loans were actually outstanding) exceeds the sum of (I) the aggregate
principal amount of Term Loans then outstanding, (II) the Total Multiple Draw I
Term Loan Commitment then in effect and (III) the Total Multiple Draw II Term
Loan Commitment then in effect.

          (g) Upon any termination of the Total Multiple Draw I Term Loan
Commitment pursuant to this Section 3.03, the Multiple Draw I Sub-Tranche A
Term Loan Commitment, the Multiple Draw I Sub-Tranche B Term Loan Commitment
and the Multiple Draw I Sub-Tranche C Term Loan Commitment of each Lender
shall, concurrently with such termination, be terminated in its entirety. Each
reduction to the Total Multiple Draw I Term Loan Commitment pursuant to Section
3.03(c)(i) shall apply to reduce the relevant Commitments pursuant to which the
respective Tranche or Tranches of the Multiple Draw I Term Loans are being made
by an amount which is equal to the Loans of such Tranche being made at such
time, with (x) the Multiple Draw I Sub-Tranche B Term Loan Commitment of each
Lender to be reduced by the principal amount of the Multiple Draw I Sub-Tranche
B Term Loan made by such Lender on such date and (y) the Multiple Draw I
Sub-Tranche C Term Loan Commitment of each Lender to be reduced by the
principal amount of the Multiple Draw I Sub-Tranche C Term Loan made by such
Lender on such date.

          (h) Upon any termination of the Total Multiple Draw II Term Loan
Commitment pursuant to this Section 3.03, the Multiple Draw II Sub-Tranche A
Term Loan Commitment and the Multiple Draw II Sub-Tranche B Term Loan
Commitment of each Lender shall, concurrently with such termination, be
terminated in its entirety. Each reduction to the Total Multiple Draw II Term
Loan Commitment pursuant to Section 3.03(d)(i) shall apply to reduce the
relevant Commitments pursuant to which the respective Tranche or Tranches of
the Multiple Draw II Term Loans are being made by an amount which is equal to
the Loans of such


                                     -26-
<PAGE>   28

Tranche being made at such time, with (x) the Multiple Draw II Sub-Tranche A
Term Loan Commitment of each Lender to be reduced by the principal amount of
the Multiple Draw II Sub-Tranche A Term Loan made by such Lender on such date
and (y) the Multiple Draw II Sub-Tranche B Term Loan Commitment of each Lender
to be reduced by the principal amount of the Multiple Draw II Sub-Tranche B
Term Loan made by such Lender on such date.

          (i) Each reduction to the Total Revolving Loan Commitment pursuant to
this Section 3.03 shall be applied proportionately to permanently reduce the
Revolving Loan Commitment of each Lender with such a Commitment.

          SECTION 4. Prepayments; Payments; Taxes.

          4.01 Voluntary Prepayments. (a) The Borrower shall have the right to
prepay the Loans, without premium or penalty, in whole or in part at any time
and from time to time on the following terms and conditions: (i) the Borrower
shall give the Administrative Agent prior to 12:00 Noon (New York City time) at
the Notice Office at least one Business Day's prior written notice (or
telephonic notice promptly confirmed in writing) of its intent to prepay Loans,
which notice (in each case) shall specify whether Multiple Draw I Term Loans,
Multiple Draw II Term Loans, Revolving Loans or Swingline Loans shall be
prepaid, the amount of such prepayment and the Types of Loans to be prepaid
and, in the case of Eurodollar Loans, the specific Borrowing or Borrowings
pursuant to which made, and which notice the Administrative Agent shall, except
in the case of Swingline Loans, promptly transmit to each of the Lenders; (ii)
(x) each partial prepayment of Term Loans pursuant to this Section 4.01(a)
shall be in an aggregate principal amount of at least $5,000,000, (y) each
partial prepayment of Revolving Loans pursuant to this Section 4.01(a) shall be
in an aggregate principal amount of at least $1,000,000 and (z) each partial
prepayment of Swingline Loans pursuant to this Section 4.01(a) shall be in an
aggregate principal amount of at least $500,000, provided that if any partial
prepayment of Eurodollar Loans made pursuant to any Borrowing shall reduce the
outstanding principal amount of Eurodollar Loans made pursuant to such
Borrowing to an amount less than the Minimum Borrowing Amount applicable
thereto, then such Borrowing may not be continued as a Borrowing of Eurodollar
Loans and any election of an Interest Period with respect thereto given by the
Borrower shall have no force or effect; (iii) each prepayment pursuant to this
Section 4.01(a) in respect of any Loans made pursuant to a Borrowing shall be
applied pro rata among such Loans, provided that at the Borrower's election in
connection with any prepayment of Revolving Loans pursuant to this Section
4.01(a), such prepayment shall not, so long as no Default or Event of Default
then exists, be applied to any Revolving Loan of a Defaulting Lender; (iv) each
voluntary prepayment of Term Loans pursuant to this Section 4.01(a) shall be
applied pro rata to each Tranche of outstanding Term Loans, with the Multiple
Draw I Term Loans to be allocated the Multiple Draw I Term Loan Percentage of
the amount of such prepayment and the Multiple Draw II Term Loans to be
allocated the Multiple Draw II Term Loan Percentage of the amount of such
prepayment; (v) each voluntary prepayment of any Multiple Draw I Term Loans
pursuant to this Section 4.01(a) occurring after the Multiple Draw I Term Loan
Commitment Termination Date shall be applied to reduce the then remaining
Scheduled Repayments of Multiple Draw I Term Loans on a pro rata basis (based
upon the then remaining unpaid principal amounts of such Scheduled Repayments
after giving effect to all prior reductions thereto); and (vi) each voluntary
prepayment of any Multiple Draw II Term Loans pursuant to this Section


                                     -27-
<PAGE>   29

4.01(a) shall be applied on a pro rata basis to the Multiple Draw II Term Loans
then outstanding pursuant to the various Multiple Draw II Term Loan
Sub-Facilities and, within each Multiple Draw II Term Loan Sub-Facility such
payments shall be applied to reduce the respective Scheduled Repayments
applicable thereto on a pro rata basis (based upon the then remaining unpaid
principal amount of such Scheduled Repayments after giving effect to all prior
reductions thereto); provided that (x) if the Scheduled Repayments applicable
to any Multiple Draw II Term Loan Sub-Facility are expressed as a percentage of
the principal amount of Multiple Draw II Term Loans outstanding thereunder as
of a given date, voluntary prepayments shall only reduce such Scheduled
Repayments if same occur after such specified date and (y) the provisions
contained above in this clause (vi), to the extent relating to the application
of voluntary repayments to the Scheduled Repayments applicable to any Multiple
Draw II Term Loan Sub-Facility, shall be subject to any contrary agreements
with respect thereto contained in the relevant Multiple Draw II Term Loan
Commitment Agreements.

          (b) In the event of a refusal by a Lender to consent to certain
proposed changes, waivers, discharges or terminations with respect to this
Agreement which have been approved by the Required Lenders as (and to the
extent) provided in Section 13.12(b), the Borrower may, upon five Business
Days' prior written notice to the Administrative Agent at the Notice Office
(which notice the Administrative Agent shall promptly transmit to each of the
Lenders) repay all Loans, together with accrued and unpaid interest, Fees, and
other amounts owing to such Lender in accordance with, and subject to the
requirements of, said Section 13.12(b) so long as (I) in the case of the
repayment of Revolving Loans of any Lender pursuant to this Section 4.01(b),
(x) the Revolving Loan Commitment of such Lender is terminated concurrently
with such repayment pursuant to Section 3.02(d) (at which time Schedule I shall
be deemed modified to reflect the changed Revolving Loan Commitments) and (y)
such Lender's RL Percentage of all outstanding Letters of Credit is cash
collateralized in a manner satisfactory to the Administrative Agent and the
Issuing Lender, (II) in the case of the repayment of Term Loans of any Lender
pursuant to this Section 4.01(b), the Multiple Draw I Term Loan Commitment (and
each of the related Commitments) of such Lender and the Multiple Draw II Term
Loan Commitment (and each of the related Commitments) of such Lender is
terminated concurrently with such repayment pursuant to Section 3.02(d) (to the
extent not theretofore terminated) (at which time Schedule I shall be deemed
modified to reflect the changed Commitments), and (III) the consents, if any,
required under Section 13.12(b) in connection with the repayment pursuant to
this clause (b) have been obtained.

          4.02 Mandatory Repayments and Commitment Reductions. (a) On any day
on which the sum of (I) the aggregate outstanding principal amount of all
Revolving Loans (after giving effect to all other repayments thereof on such
date), (II) the aggregate outstanding principal amount of all Swingline Loans
(after giving effect to all other repayments thereof on such date) and (III)
the aggregate amount of all Letter of Credit Outstandings exceeds the Total
Available Revolving Loan Commitment at such time, the Borrower shall prepay on
such day the principal of Swingline Loans and, after all Swingline Loans have
been repaid in full or if no Swingline Loans are outstanding, Revolving Loans
in an amount equal to such excess. If, after giving effect to the prepayment of
all outstanding Swingline Loans and Revolving Loans, the aggregate amount of
the Letter of Credit Outstandings exceeds the Total Available Revolving Loan
Commitment at such time, the Borrower shall pay to the Administrative Agent at
the


                                     -28-
<PAGE>   30

Payment Office on such day an amount of cash and/or Cash Equivalents equal to
the amount of such excess (up to a maximum amount equal to the Letter of Credit
Outstandings at such time), such cash and/or Cash Equivalents to be held as
security for all obligations of the Borrower to the Issuing Lender and the
Lenders hereunder in a cash collateral account to be established by the
Administrative Agent.

          (b) (i) In addition to any other mandatory repayments pursuant to
this Section 4.02, on each date set forth below, the Borrower shall be required
to repay that principal amount of Multiple Draw I Term Loans, to the extent
then outstanding, as is equal to the product of (i) the aggregate principal
amount of all Multiple Draw I Term Loans outstanding on the Multiple Draw I
Term Loan Commitment Termination Date (after giving effect to any Multiple Draw
I Term Loans made on such date) and (ii) the respective percentage set forth
opposite each such date below (each such repayment, as the same may be reduced
as provided in Sections 4.01(a) and 4.02(h), a "Multiple Draw I Term Loan
Scheduled Repayment"):

<TABLE>
<CAPTION>
     Multiple Draw I Term Loan
     Scheduled Repayment Date                            Percentage
     ------------------------                            ----------
     <S>                                                 <C>  
     March 31, 2002                                           16.6%
     June 30, 2002                                            16.6%
     September 30, 2002                                       16.6%
     December 31, 2002                                        16.6%

     March 31, 2003                                           16.6%
     Multiple Draw I/Revolver   Maturity Date
                                                                17%
</TABLE>

          (ii) In addition to any other mandatory repayments pursuant to this
Section 4.02, the Borrower shall be required to repay the principal amount of
Multiple Draw II Term Loans made under each Multiple Draw II Term Loan
Sub-Facility on the dates and in the amounts set forth in the respective
Multiple Draw II Term Loan Commitment Agreement or Agreements for such Multiple
Draw II Term Loan Sub-Facility (each such repayment as the same may be reduced
as provided in Sections 4.01(a) and 4.02(h), a "Multiple Draw II Term Loan
Scheduled Repayment"; with the Multiple Draw I Term Loan Scheduled Repayments
and the Multiple Draw II Term Loan Scheduled Repayments being collectively
referred to as the "Scheduled Repayments"), provided that in no event may the
Weighted Average Life to Maturity of any Multiple Draw II Term Loan
Sub-Facility (for this purpose, calculated assuming that all Multiple Draw II
Term Loans permitted to be incurred pursuant to such Multiple Draw II Term Loan
Sub-Facility have been incurred) be permitted to be less than the Weighted
Average Life to Maturity applicable to the Multiple Draw I Term Loans (for this
purpose, calculated assuming that all Multiple Draw I Term Loans permitted to
be incurred pursuant to this Agreement have been incurred).

          (c) In addition to any other mandatory repayments pursuant to this
Section 4.02, on each date on or after the Initial Borrowing Date upon which
the Borrower or any of its Subsidiaries receives any cash proceeds from any
capital contribution or any sale or issuance of its


                                     -29-
<PAGE>   31

equity (other than cash proceeds received (i) from the issuance by the Borrower
of shares of its common stock (including as a result of the exercise of any
options with regard thereto), or options to purchase shares of its common
stock, to officers, directors and employees of the Borrower and its
Subsidiaries, (ii) from the exercise of any warrants to purchase common stock
of the Borrower outstanding on the Effective Date, so long as the aggregate
amount excluded pursuant to this clause (ii) does not exceed $4,000,000, (iii)
from the issuance by any Foreign Subsidiary of shares of its common stock, so
long as the aggregate amount excluded pursuant to this clause (iii) does not
exceed $5,000,000 or (iv) from equity contributions to any Subsidiary of the
Borrower to the extent made by the Borrower or another Subsidiary of the
Borrower), an amount equal to 50% of the Net Equity Proceeds of such capital
contribution or sale or issuance of equity shall be applied as a mandatory
repayment of principal of outstanding Term Loans and/or as a mandatory
reduction to the Total Multiple Draw I Term Loan Commitment or the Total
Multiple Draw II Term Loan Commitment in accordance with the requirements of
Sections 4.02(h) and (i).

          (d) In addition to any other mandatory repayments pursuant to this
Section 4.02, on each date on or after the Initial Borrowing Date upon which
the Borrower or any of its Subsidiaries receives any cash proceeds from any
incurrence by the Borrower or any of its Subsidiaries of Indebtedness for
borrowed money (other than Indebtedness for borrowed money permitted to be
incurred pursuant to Section 9.04 as such Section is in effect on the Effective
Date), an amount equal to 100% of the Net Debt Proceeds of the respective
incurrence of Indebtedness shall be applied as a mandatory repayment of
principal of outstanding Term Loans and/or as a mandatory reduction to the
Total Multiple Draw I Term Loan Commitment or the Total Multiple Draw II Term
Loan Commitment in accordance with the requirements of Sections 4.02(h) and
(i).

          (e) In addition to any other mandatory repayments pursuant to this
Section 4.02, on each date on or after the Initial Borrowing Date upon which
the Borrower or any of its Subsidiaries receives any cash proceeds from any
Asset Sale, an amount equal to 100% of the Net Sale Proceeds therefrom shall be
applied as a mandatory repayment of principal of outstanding Term Loans and/or
as a mandatory reduction to the Total Multiple Draw I Term Loan Commitment or
the Total Multiple Draw II Term Loan Commitment in accordance with the
requirements of Sections 4.02(h) and (i); provided that with respect to no more
than $5,000,000 in the aggregate of cash proceeds from Asset Sales in any
fiscal year of the Borrower, the Net Sale Proceeds therefrom shall not be
required to be so applied on such date so long as no Default or Event of
Default then exists and the Borrower has delivered a certificate to the
Administrative Agent on or prior to such date stating that such Net Sale
Proceeds shall be used to purchase assets used or to be used in the businesses
referred to in Section 9.15(a) within 180 days following the date of such Asset
Sale (which certificate shall set forth the estimates of the proceeds to be so
expended), and provided further, that if all or any portion of such Net Sale
Proceeds not required to be applied as a mandatory repayment of principal of
outstanding Term Loans and/or as a mandatory reduction to the Total Multiple
Draw I Term Loan Commitment or the Total Multiple Draw II Term Loan Commitment
are not so reinvested in assets used or to be used in the businesses referred
to in Section 9.15(a) within such 180-day period, such remaining portion shall
be applied on the last day of such period as a mandatory repayment of principal
of outstanding Term Loans and/or as a mandatory reduction to the Total Multiple
Draw I Term


                                     -30-
<PAGE>   32

Loan Commitment or the Total Multiple Draw II Term Loan Commitment as provided
above in this Section 4.02(e) without regard to this proviso.

          (f) In addition to any other mandatory repayments pursuant to this
Section 4.02, on each Excess Cash Payment Date, an amount equal to 75% of the
Excess Cash Flow for the relevant Excess Cash Payment Period shall be applied
as a mandatory repayment of principal of outstanding Term Loans and/or as a
mandatory reduction to the Total Multiple Draw I Term Loan Commitment or the
Total Multiple Draw II Term Loan Commitment in accordance with the requirements
of Sections 4.02(h) and (i).

          (g) In addition to any other mandatory repayments pursuant to this
Section 4.02, within 10 days following each date on or after the Initial
Borrowing Date upon which the Borrower or any of its Subsidiaries receives any
cash proceeds from any Recovery Event, an amount equal to 100% of the Net
Insurance Proceeds from such Recovery Event shall be applied as a mandatory
repayment of principal of outstanding Term Loans and/or as a mandatory
reduction to the Total Multiple Draw I Term Loan Commitment or the Total
Multiple Draw II Term Loan Commitment in accordance with the requirements of
Sections 4.02(h) and (i), provided that so long as no Default or Event of
Default then exists and such Net Insurance Proceeds do not exceed (A) in the
case of any Recovery Event when the aggregate amount of outstanding Loans and
Letter of Credit Outstandings is less than $50,000,000 at such time,
$20,000,000 and (B) in the case of any Recovery Event when the aggregate amount
of outstanding Loans and Letter of Credit Outstandings is equal to or greater
than $50,000,000 at such time, $10,000,000, such Net Insurance Proceeds (in
either case) shall not be required to be so applied on such date to the extent
that the Borrower has delivered a certificate to the Administrative Agent on or
prior to such date stating that such Net Insurance Proceeds shall be used to
replace or restore any properties or assets in respect of which such Net
Insurance Proceeds were paid within 270 days following the date of the receipt
of such Net Insurance Proceeds (which certificate shall set forth the estimates
of the Net Insurance Proceeds to be so expended), and provided further, that
(i) if the amount of such Net Insurance Proceeds exceeds (x) in the case of
Recovery Events described in clause (A) above, $20,000,000 or (y) in the case
of Recovery Events described in clause (B) above, $10,000,000 then (in either
case), the entire amount of such Net Insurance Proceeds (and not only the
portion thereof in excess of $20,000,000 or $10,000,000, as the case may be),
shall be applied as a mandatory repayment of principal of outstanding Term
Loans and/or as a mandatory reduction to the Total Multiple Draw I Term Loan
Commitment or the Total Multiple Draw II Term Loan Commitment as provided above
in this Section 4.02(g) and (ii) if all or any portion of such Net Insurance
Proceeds not required to be applied as a mandatory repayment of principal of
outstanding Term Loans and/or as a mandatory reduction to the Total Multiple
Draw I Term Loan Commitment or the Total Multiple Draw II Term Loan Commitment
pursuant to the preceding proviso are not so used within 270 days after the
date of the receipt of such Net Insurance Proceeds, such remaining portion
shall be applied on the last day of such period as a mandatory repayment of
principal of outstanding Term Loans and/or as a mandatory reduction to the
Total Multiple Draw I Term Loan Commitment or the Total Multiple Draw II Term
Loan Commitment as provided above in this Section 4.02(g) without regard to the
preceding proviso.


                                     -31-
<PAGE>   33

          (h) Each amount required to be applied to outstanding Term Loans, the
Total Multiple Draw I Term Loan Commitment and/or the Total Multiple Draw II
Term Loan Commitment pursuant to Sections 4.02(c), (d), (e), (f) and (g) shall
be applied (1) first, as a mandatory prepayment of outstanding Term Loans pro
rata to each Tranche of Term Loans, with the Multiple Draw I Term Loans to be
allocated the Multiple Draw I Term Loans Percentage of the amount of such
prepayment and the Multiple Draw II Term Loans to be allocated the Multiple
Draw II Term Loan Percentage of the amount of such prepayment; (2) second, to
the extent that all outstanding Term Loans have been repaid, to reduce the
Total Multiple Draw I Term Loan Commitment as provided below; and (3) third, to
the extent all outstanding Term Loans have been repaid and the Total Multiple
Draw I Term Loan Commitment has been reduced to zero, to reduce the Total
Multiple Draw II Term Loan Commitment as provided below. Each amount required
to be applied to reduce the Total Multiple Draw I Term Loan Commitment pursuant
to Sections 4.02(c), (d), (e), (f) and (g) shall be applied pro rata to the
related Commitments, with the Total Multiple Draw I Sub-Tranche A Term Loan
Commitment to be allocated the Multiple Draw I Sub-Tranche A Term Loan
Commitment Percentage of the amount of such prepayment, the Total Multiple Draw
I Sub-Tranche B Term Loan Commitment to be allocated the Multiple Draw I
Sub-Tranche B Term Loan Commitment Percentage of such prepayment and the Total
Multiple Draw I Sub-Tranche C Term Loan Commitment to be allocated the Multiple
Draw I Sub-Tranche C Term Loan Commitment Percentage of such prepayment. Each
amount required to be applied to reduce the Total Multiple Draw II Term Loan
Commitment pursuant to Sections 4.02(c), (d), (e), (f) and (g) shall be applied
pro rata to the related Commitments, with the Total Multiple Draw II
Sub-Tranche A Term Loan Commitment to be allocated the Multiple Draw II
Sub-Tranche A Term Loan Commitment Percentage of such prepayment and the Total
Multiple Draw II Sub-Tranche B Term Loan Commitment to be allocated the
Multiple Draw II Sub-Tranche B Term Loan Commitment of such prepayment. Each
amount applied as described in the two preceding sentences to reduce the Total
Multiple Draw I Sub-Tranche C Term Loan Commitment, the Total Multiple Draw I
Sub-Tranche B Term Loan Commitment, the Total Multiple Draw I Sub-Tranche A
Term Loan Commitment, the Total Multiple Draw II Sub-Tranche B Term Loan
Commitment or the Total Multiple Draw II Sub-Tranche A Term Loan Commitment
shall be applied on a pro rata basis to reduce the related Commitments of the
various Lenders. The amount of each principal repayment made as required by
said Sections 4.02(c), (d), (e), (f) and (g) and, in accordance with the
requirements of this clause (h), applied to the repayment of (i) Multiple Draw
I Term Loans after the Multiple Draw I Term Loan Commitment Termination Date,
shall be applied to reduce the then remaining Scheduled Repayments of such
Multiple Draw I Term Loans on a pro rata basis (based upon the then remaining
unpaid principal amounts of such Scheduled Repayments after giving effect to
all prior reductions thereto) or (ii) Multiple Draw II Term Loans, shall be
applied on a pro rata basis to the Multiple Draw II Term Loans then outstanding
pursuant to the various Multiple Draw II Term Loan Sub-Facilities and, within
each Multiple Draw II Term Loan Sub-Facility such payments shall be applied to
reduce the respective Scheduled Repayments applicable thereto on a pro rata
basis (based upon the then remaining unpaid principal amount of such Scheduled
Repayments after giving effect to all prior reductions thereto); provided that
(x) if the Scheduled Repayments applicable to any Multiple Draw II Term Loan
Sub-Facility are expressed as a percentage of the principal amount of Multiple
Draw II Term Loans outstanding thereunder as of a given date, voluntary
prepayments shall only reduce such Scheduled Repayments if same occur after
such specified date and (y) the


                                     -32-
<PAGE>   34

provisions contained above in this clause (ii), to the extent relating to the
application of mandatory repayments to the Scheduled Repayments applicable to
any Multiple Draw II Term Loan Sub-Facility, shall be subject to any contrary
agreements with respect thereto contained in the relevant Multiple Draw II Term
Loan Commitment Agreements.

          (i) With respect to each repayment of Loans required by this Section
4.02, the Borrower may designate the Types of Loans of the respective Tranche
which are to be repaid and, in the case of Eurodollar Loans, the specific
Borrowing or Borrowings of the respective Tranche pursuant to which made,
provided that: (i) repayments of Eurodollar Loans pursuant to this Section 4.02
may only be made on the last day of an Interest Period applicable thereto
unless all Eurodollar Loans of the respective Tranche with Interest Periods
ending on such date of required repayment and all Base Rate Loans of the
respective Tranche have been paid in full; (ii) if any repayment of Eurodollar
Loans made pursuant to a single Borrowing shall reduce the outstanding
Eurodollar Loans made pursuant to such Borrowing to an amount less than the
Minimum Borrowing Amount applicable thereto, such Borrowing shall be converted
at the end of the then current Interest Period into a Borrowing of Base Rate
Loans; and (iii) each repayment of any Loans made pursuant to a Borrowing shall
be applied pro rata among such Loans. In the absence of a designation by the
Borrower as described in the preceding sentence, the Administrative Agent
shall, subject to the above, make such designation in its sole discretion.

          (j) Notwithstanding anything to the contrary contained in this
Agreement or in any other Credit Document, (i) all then outstanding Loans
(other than Swingline Loans) of any Tranche shall be repaid in full on the
respective Maturity Date for such Tranche of Loans, (ii) all then outstanding
Swingline Loans shall be repaid in full on the Swingline Expiry Date and (iii)
unless, the Required Lenders otherwise agree, all then outstanding Loans shall
be repaid in full on the date on which a Change of Control occurs.

          4.03 Method and Place of Payment. Except as otherwise specifically
provided herein, all payments under this Agreement or under any Note shall be
made to the Administrative Agent for the account of the Lender or Lenders
entitled thereto not later than 12:00 Noon (New York City time) on the date
when due and shall be made in Dollars in immediately available funds at the
Payment Office. Whenever any payment to be made hereunder or under any Note
shall be stated to be due on a day which is not a Business Day, the due date
thereof shall be extended to the next succeeding Business Day and, with respect
to payments of principal, interest shall be payable at the applicable rate
during such extension.

          4.04 Net Payments. (a) All payments made by the Borrower hereunder or
under any Note will be made without setoff, counterclaim or other defense.
Except as provided in Section 4.04(b), all such payments will be made free and
clear of, and without deduction or withholding for, any present or future
taxes, levies, imposts, duties, fees, assessments or other charges of whatever
nature now or hereafter imposed by any jurisdiction or by any political
subdivision or taxing authority thereof or therein with respect to such
payments (but excluding, except as provided in the second succeeding sentence,
any tax imposed on or measured by the net income or profits of a Lender
pursuant to the laws of the jurisdiction in which it is organized or the
jurisdiction in which the principal office or applicable lending office of such
Lender is located or any subdivision thereof or therein) and all interest,
penalties or similar liabilities with respect to


                                     -33-
<PAGE>   35

such non-excluded taxes, levies, imposts, duties, fees, assessments or other
charges (all such non-excluded taxes, levies, imposts, duties, fees,
assessments or other charges being referred to collectively as "Taxes"). If any
Taxes are so levied or imposed, the Borrower agrees to pay the full amount of
such Taxes, and such additional amounts as may be necessary so that every
payment of all amounts due under this Agreement or under any Note, after
withholding or deduction for or on account of any Taxes, will not be less than
the amount provided for herein or in such Note. If any amounts are payable in
respect of Taxes pursuant to the preceding sentence, the Borrower agrees to
reimburse each Lender, upon the written request of such Lender, for taxes
imposed on or measured by the net income or profits of such Lender pursuant to
the laws of the jurisdiction in which such Lender is organized or in which the
principal office or applicable lending office of such Lender is located or
under the laws of any political subdivision or taxing authority of any such
jurisdiction in which such Lender is organized or in which the principal office
or applicable lending office of such Lender is located and for any withholding
of taxes as such Lender shall determine are payable by, or withheld from, such
Lender, in respect of such amounts so paid to or on behalf of such Lender
pursuant to the preceding sentence and in respect of any amounts paid to or on
behalf of such Lender pursuant to this sentence. The Borrower will furnish to
the Administrative Agent within 45 days after the date the payment of any Taxes
is due pursuant to applicable law certified copies of tax receipts evidencing
such payment by the Borrower. The Borrower agrees to indemnify and hold
harmless each Lender, and reimburse such Lender upon its written request, for
the amount of any Taxes so levied or imposed and paid by such Lender.

          (b) Each Lender that is not a United States person (as such term is
defined in Section 7701(a)(30) of the Code) for U.S. Federal income tax
purposes agrees to deliver to the Borrower and the Administrative Agent on or
prior to the Effective Date or, in the case of a Lender that is an assignee or
transferee of an interest under this Agreement pursuant to Section 1.13 or
13.04(b) (unless the respective Lender was already a Lender hereunder
immediately prior to such assignment or transfer), on the date of such
assignment or transfer to such Lender, (i) two accurate and complete original
signed copies of Internal Revenue Service Form 4224 or 1001 (or successor
forms) certifying to such Lender's entitlement as of such date to a complete
exemption from United States withholding tax with respect to payments to be
made under this Agreement and under any Note, or (ii) if the Lender is not a
"bank" within the meaning of Section 881(c)(3)(A) of the Code and cannot
deliver either Internal Revenue Service Form 1001 or 4224 pursuant to clause
(i) above, (x) a certificate substantially in the form of Exhibit E (any such
certificate, a "Section 4.04(b)(ii) Certificate") and (y) two accurate and
complete original signed copies of Internal Revenue Service Form W-8 (or
successor form) certifying to such Lender's entitlement as of such date to a
complete exemption from United States withholding tax with respect to payments
of interest to be made under this Agreement and under any Note. In addition,
each Lender agrees that from time to time after the Effective Date, when a
lapse in time or change in circumstances renders the previous certification
obsolete or inaccurate in any material respect, such Lender will deliver to the
Borrower and the Administrative Agent two new accurate and complete original
signed copies of Internal Revenue Service Form 4224 or 1001 (or successor
forms), or Form W-8 (or successor form) and a Section 4.04(b)(ii) Certificate,
as the case may be, and such other forms as may be required in order to confirm
or establish the entitlement of such Lender to a continued exemption from or
reduction in United States


                                     -34-
<PAGE>   36

withholding tax with respect to payments under this Agreement and any Note, or
such Lender shall immediately notify the Borrower and the Administrative Agent
of its inability to deliver any such Form or Certificate, in which case such
Lender shall not be required to deliver any such Form or Certificate pursuant
to this Section 4.04(b). Notwithstanding anything to the contrary contained in
Section 4.04(a), but subject to Section 13.04(b) and the immediately succeeding
sentence, (x) the Borrower shall be entitled, to the extent it is required to
do so by law, to deduct or withhold income or similar taxes imposed by the
United States (or any political subdivision or taxing authority thereof or
therein) from interest, Fees or other amounts payable hereunder for the account
of any Lender which is not a United States person (as such term is defined in
Section 7701(a)(30) of the Code) for U.S. Federal income tax purposes to the
extent that such Lender has not provided to the Borrower U.S. Internal Revenue
Service Forms that establish a complete exemption from such deduction or
withholding and (y) the Borrower shall not be obligated pursuant to Section
4.04(a) to gross-up payments to be made to a Lender in respect of income or
similar taxes imposed by the United States if (I) such Lender has not provided
to the Borrower the Internal Revenue Service Forms required to be provided to
the Borrower pursuant to this Section 4.04(b) or (II) in the case of a payment,
other than interest, to a Lender described in clause (ii) above, to the extent
that such Forms do not establish a complete exemption from withholding of such
taxes. Notwithstanding anything to the contrary contained in the preceding
sentence or elsewhere in this Section 4.04 and except as set forth in Section
13.04(b), the Borrower agrees to pay any additional amounts and to indemnify
each Lender in the manner set forth in Section 4.04(a) (without regard to the
identity of the jurisdiction requiring the deduction or withholding) in respect
of any Taxes deducted or withheld by it as described in the immediately
preceding sentence as a result of any changes that are effective after the
Effective Date in any applicable law, treaty, governmental rule, regulation,
guideline or order, or in the interpretation thereof, relating to the deducting
or withholding of such Taxes.

          (c) If the Borrower pays any additional amount under this Section
4.04 to a Lender and such Lender determines in its sole discretion that it has
actually received or realized in connection therewith any refund or any
reduction of, or credit against, its Tax liabilities in or with respect to the
taxable year in which the additional amount is paid (a "Tax Benefit"), such
Lender shall pay to the Borrower an amount that the Lender shall, in its sole
discretion, determine is equal to the net benefit, after tax, which was
obtained by the Lender in such year as a consequence of such Tax Benefit;
provided, however, that (i) any Lender may determine, in its sole discretion
consistent with the policies of such Lender, whether to seek a Tax Benefit;
(ii) any Taxes that are imposed on a Lender as a result of a disallowance or
reduction (including through the expiration of any tax credit carryover or
carryback of such Lender that otherwise would not have expired) of any Tax
Benefit with respect to which such Lender has made a payment to the Borrower
pursuant to this Section 4.04(c) shall be treated as a Tax for which the
Borrower is obligated to indemnify such Lender pursuant to this Section 4.04
without any exclusions or defenses; and (iii) nothing in this Section 4.04(c)
shall require any Lender to disclose any confidential information to the
Borrower (including, without limitation, such Lender's tax returns).

          SECTION 5. Conditions Precedent to Credit Events on the Initial
Borrowing Date. The obligation of each Lender to make Loans, and the obligation
of the Issuing Lender to


                                     -35-
<PAGE>   37

issue Letters of Credit, on the Initial Borrowing Date, is subject at the time
of the making of such Loans or the issuance of such Letters of Credit to the
satisfaction of the following conditions:

          5.01 Execution of Agreement; Notes. On or prior to the Initial
Borrowing Date, (i) the Effective Date shall have occurred and (ii) there shall
have been delivered to the Administrative Agent for the account of each of the
Lenders that has requested same the appropriate Multiple Draw I Term Note
and/or Revolving Note executed by the Borrower and, to the extent requested by
the Swingline Lender, the Swingline Note executed by the Borrower, in each
case, in the amount, maturity and as otherwise provided herein.

          5.02 Officer's Certificate. On the Initial Borrowing Date, the
Administrative Agent shall have received a certificate, dated the Initial
Borrowing Date and signed on behalf of the Borrower by the Chairman of the
Board, the President or any Vice President of the Borrower, certifying on
behalf of the Borrower that all of the conditions in Sections 5.06, 5.07, 5.08
and 6.01 have been satisfied on such date.

          5.03 Opinions of Counsel. On the Initial Borrowing Date, the
Administrative Agent shall have received (i) from Davis Polk & Wardwell,
counsel to the Borrower and its Subsidiaries, an opinion addressed to the
Agents, the Collateral Agent and each of the Lenders and dated the Initial
Borrowing Date covering the matters set forth in Exhibit F-1 and such other
matters incident to the transactions contemplated herein as the Agents may
reasonably request, (ii) from Frederick G. Anderson, Esq., General Counsel to
the Borrower, an opinion addressed to the Agents, the Collateral Agent and each
of the Lenders and dated the Initial Borrowing Date covering the matters set
forth in Exhibit F-2 and such other matters incident to the transactions
contemplated herein as the Agents may reasonably request and (iii) from Paul,
Weiss, Rifkind, Wharton & Garrison, special FCC counsel to the Borrower and its
Subsidiaries, an opinion addressed to the Agents, the Collateral Agent and each
of the Lenders and dated the Initial Borrowing Date covering matters set forth
in Exhibit F-3 and such other matters incident to the transactions contemplated
herein as the Agents may reasonably request.

          5.04 Corporate Documents; Proceedings; etc. (a) On the Initial
Borrowing Date, the Administrative Agent shall have received a certificate from
the Borrower and each Subsidiary thereof, dated the Initial Borrowing Date,
signed by the Chairman of the Board, the President, any Vice President or, in
the case of any certificate from any Subsidiary of the Borrower only, the
Secretary of each such Person, and attested to by the Secretary or any
Assistant Secretary of such Person, in the form of Exhibit G with appropriate
insertions, together with copies of the certificate of incorporation (or
equivalent organizational document) and by-laws of such Person and the
resolutions of such Person referred to in such certificate, and each of the
foregoing shall be in form and substance reasonably acceptable to the Agents.

          (b) All corporate and legal proceedings and all instruments and
agreements in connection with the transactions contemplated by this Agreement
and the other Credit Documents shall be reasonably satisfactory in form and
substance to the Agents and the Required Lenders, and the Administrative Agent
shall have received all information and copies of all documents and papers,
including records of corporate proceedings, governmental approvals, good
standing certificates and bring-down telegrams or facsimiles, if any, which
either Agent reasonably may


                                     -36-
<PAGE>   38

have requested in connection therewith, such documents and papers where
appropriate to be certified by proper corporate or governmental authorities.

          (c) On the Initial Borrowing Date, the corporate, ownership and
capital structure (including, without limitation, the terms of any capital
stock, options, warrants or other securities issued by the Borrower or any of
its Subsidiaries) of the Borrower and its Subsidiaries shall be in form and
substance reasonably satisfactory to the Agents and the Required Lenders.

          5.05 Plans; Shareholders' Agreements; Management Agreements;
Employment Agreements; Non-Compete Agreements; Existing Indebtedness
Agreements. On or prior to the Initial Borrowing Date, there shall have been
delivered to the Administrative Agent true and correct copies of the following
documents:

          (i) all Plans (and for each Plan that is required to file an annual
     report on Internal Revenue Service Form 5500-series, a copy of the most
     recent such report (including, to the extent required, the related
     financial and actuarial statements and opinions and other supporting
     statements, certifications, schedules and information), and for each Plan
     that is a "single-employer plan," as defined in Section 4001(a)(15) of
     ERISA, the most recently prepared actuarial valuation therefor) and any
     other material "employee benefit plans," as defined in Section 3(3) of
     ERISA, and any other agreements, plans or arrangements, with or for the
     benefit of current or former employees of the Borrower or any of its
     Subsidiaries or any ERISA Affiliate (provided that the foregoing shall
     apply in the case of any multiemployer plan, as defined in Section
     4001(a)(3) of ERISA, only to the extent that any document described
     therein is in the possession of the Borrower, any Subsidiary of the
     Borrower or any ERISA Affiliate or reasonably available thereto from the
     sponsor or trustee of any such Plan);

          (ii) all material agreements entered into by the Borrower or any of
     its Subsidiaries governing the terms and relative rights of its capital
     stock and any agreements entered into by shareholders relating to any such
     entity with respect to its capital stock (collectively, the "Shareholders'
     Agreements");

          (iii) all material agreements with members of, or with respect to,
     the management of the Borrower or any of its Subsidiaries (collectively,
     the "Management Agreements");

          (iv) all material employment agreements entered into by the Borrower,
     any of its Subsidiaries (collectively, the "Employment Agreements");

          (v) the form of non-compete agreements entered into by the Borrower
     or any of its Subsidiaries or any of their respective employees (the
     "Non-Compete Agreement"); and

          (vi) all agreements evidencing or relating to Indebtedness of the
     Borrower or any of its Subsidiaries which is to remain outstanding after
     giving effect to the incurrence 


                                     -37-
<PAGE>   39

     of Loans on the Initial Borrowing Date (collectively, the "Existing
     Indebtedness Agreements");

all of which Plans, Shareholders' Agreements, Management Agreements, Employment
Agreements, the Non-Compete Agreement and Existing Indebtedness Agreements
shall be in form and substance reasonably satisfactory to the Agents and the
Required Lenders.

          5.06 Existing Credit Agreement. (a) On the Initial Borrowing Date,
the total commitments in respect of the Existing Credit Agreement shall have
been terminated, and all loans and notes with respect thereto shall have been
repaid in full (together with interest thereon), all letters of credit issued
thereunder shall have been terminated (or fully supported with Letters of
Credit issued hereunder) and all other amounts (including premiums) owing
pursuant to the Existing Credit Agreement shall have been repaid in full and
all documents in respect of the Existing Credit Agreement and all guarantees
with respect thereto shall have been terminated (except as to indemnification
and similar provisions, which may survive to the extent provided therein) and
be of no further force and effect.

          (b) On the Initial Borrowing Date, the creditors in respect of the
Existing Credit Agreement shall have terminated and released all security
interests and Liens on the assets owned by the Borrower and its Subsidiaries.
The Administrative Agent shall have received such releases of security
interests in, and Liens on, the assets owned by the Borrower and its
Subsidiaries as may have been requested by the Agents, which releases shall be
in form and substance reasonably satisfactory to the Agents. Without limiting
the foregoing, there shall have been delivered (i) proper termination
statements (Form UCC-3 or the appropriate equivalent) for filing under the UCC
of each jurisdiction where a financing statement (Form UCC-1 or the appropriate
equivalent) was filed with respect to the Borrower or any of its Subsidiaries
in connection with the security interests created with respect to the Existing
Credit Agreement and the documentation related thereto, (ii) termination or
reassignment of any security interest in, or Lien on, any Real Property,
patents, trademarks, copyrights, or similar interests of the Borrower or any of
is Subsidiaries on which filings have been made, and (iii) all collateral owned
by the Borrower or any of its Subsidiaries in the possession of any of the
creditors in respect of the Existing Credit Agreement or any collateral agent
or trustee under any related security document shall have been returned to the
Borrower or such Subsidiary, as the case may be.

          (c) The Administrative Agent shall have received evidence, in form
and substance reasonably satisfactory to the Agents, that the matters set forth
in Sections 5.06(a) and (b) have been satisfied as of the Initial Borrowing
Date.

          5.07 Adverse Change, etc. (a) Since December 31, 1998, nothing shall
have occurred (and no Agent nor any Lender shall have become aware of any facts
or conditions not previously known, whether as a result of their due diligence
investigations or otherwise) which either Agent or the Required Lenders shall
reasonably determine (i) has had, or could reasonably be expected to have, a
material adverse effect on the rights or remedies of the Lenders or any Agent,
or on the ability of any Credit Party to perform its obligations to them
hereunder or under any other Credit Document or (ii) has had, or could
reasonably be expected to have, a material


                                     -38-
<PAGE>   40

adverse effect on the business, operations, property, assets, liabilities,
condition (financial or otherwise) or prospects of the Borrower or of the
Borrower and its Subsidiaries taken as a whole.

          (b) On or prior to the Initial Borrowing Date, all necessary
governmental (domestic and foreign) and third party approvals and/or consents
(including, without limitation, all FCC approvals and/or consents) in
connection with the transactions contemplated by the Credit Documents and
otherwise referred to herein or therein shall have been obtained and remain in
effect, and all applicable waiting periods with respect thereto shall have
expired without any action being taken by any competent authority which
restrains, prevents or imposes materially adverse conditions upon the
consummation of the transactions contemplated by the Credit Documents or
otherwise referred to herein or therein. Additionally, there shall not exist
any judgment, order, injunction or other restraint issued or filed or a hearing
seeking injunctive relief or other restraint pending or notified prohibiting or
imposing materially adverse conditions upon the transactions contemplated by
the Credit Documents or otherwise referred to herein or therein.

          5.08 Litigation. On the Initial Borrowing Date, there shall be no
actions, suits or proceedings pending or threatened (i) with respect to this
Agreement or any other Credit Document or (ii) which either Agent or the
Required Lenders shall reasonably determine could reasonably be expected to
have a material adverse effect on (a) the business, operations, property,
assets, liabilities, condition (financial or otherwise) or prospects of the
Borrower or of the Borrower and its Subsidiaries taken as a whole, (b) the
rights or remedies of the Lenders or any Agent hereunder or under any other
Credit Document or (c) the ability of any Credit Party to perform its
respective obligations to the Lenders or any Agent hereunder or under any other
Credit Document.

          5.09 Pledge Agreement. On the Initial Borrowing Date, the Borrower
shall have duly authorized, executed and delivered the Pledge Agreement in the
form of Exhibit H (as amended, modified or supplemented from time to time, the
"Pledge Agreement") and shall have delivered to the Collateral Agent, as
Pledgee thereunder, all of the Certificated Securities, if any, referred to
therein and owned by such Credit Party, (x) endorsed in blank in the case of
promissory notes constituting Certificated Securities and (y) together with
executed and undated stock powers in the case of capital stock constituting
Certificated Securities.

          5.10 Security Agreement. On the Initial Borrowing Date, the Borrower
shall have duly authorized, executed and delivered the Security Agreement in
the form of Exhibit I (as modified, supplemented or amended from time to time,
the "Security Agreement") covering all of the Borrower's present and future
Security Agreement Collateral, together with:

          (i) proper Financing Statements (Form UCC-1 or the equivalent) fully
     executed for filing under the UCC or other appropriate filing offices of
     each jurisdiction as may be necessary or, in the reasonable opinion of the
     Collateral Agent, desirable to perfect the security interests purported to
     be created by the Security Agreement;

          (ii) to the extent received by the Borrower, certified copies of
     Requests for Information or Copies (Form UCC-11), or equivalent reports,
     listing all effective financing statements that name the Borrower or any
     of its Subsidiaries as debtor and that are filed in 


                                     -39-
<PAGE>   41

     the jurisdictions referred to in clause (i) above, together with copies of
     such other financing statements that name the Borrower or any of its
     Subsidiaries as debtor (none of which shall cover any of the Collateral
     except to the extent evidencing Permitted Liens or in respect of which the
     Collateral Agent shall have received termination statements (Form UCC-3)
     or such other termination statements as shall be required by local law
     fully executed for filing);

          (iii) evidence of the completion of all other recordings and filings
     of, or with respect to, the Security Agreement as may be necessary or, in
     the reasonable opinion of the Collateral Agent, desirable to perfect the
     security interests intended to be created by the Security Agreement; and

          (iv) evidence that all other actions necessary or, in the reasonable
     opinion of the Collateral Agent, desirable to perfect and protect the
     security interests purported to be created by the Security Agreement have
     been taken.

          5.11 Officer's Certificate as to "Senior Indebtedness" under the
11-1/4% Senior Subordinated Discount Notes. On the Initial Borrowing Date, the
Administrative Agent shall have received a certificate, dated the Initial
Borrowing Date and signed on behalf of the Borrower by the Chairman of the
Board, the President or any Vice President of the Borrower certifying that this
Agreement and the incurrence of all Loans and the issuance of all Letters of
Credit as permitted under this Agreement are, and when incurred or issued will
be, permitted under Sections 4.03 and 4.04 of the 11-1/4% Senior Subordinated
Discount Note Indenture.

          5.12 Board Approval. On or prior to the Initial Borrowing Date, a
majority of the disinterested members of the Board of Directors of the Borrower
shall have approved the execution, delivery and performance by the Borrower of
each of the Credit Documents to which it is a party, and the Administrative
Agent shall have received evidence, in form and substance satisfactory to it,
of such approval.

          5.13 Financial Statements; Pro Forma Balance Sheet; Projections. On
or prior to the Initial Borrowing Date, the Administrative Agent shall have
received true and correct copies of the historical financial statements and the
Projections referred to in Sections 7.05(a) and (d), which historical financial
statements and Projections shall be in form and substance reasonably
satisfactory to the Agents and the Required Lenders.

          5.14 Solvency Certificate; Insurance Certificates. On the Initial
Borrowing Date, the Borrower shall have delivered to the Administrative Agent:

          (i) a solvency certificate from a financial officer of the Borrower
     in the form of Exhibit J; and

          (ii) certificates of insurance complying with the requirements of
     Section 8.03 for the business and properties of the Borrower and its
     Subsidiaries, in form and substance reasonably satisfactory to the Agents
     and naming the Collateral Agent as an additional insured and as loss
     payee, and stating that such insurance shall not be canceled without at


                                     -40-
<PAGE>   42

     least 30 days prior written notice by the insurer to the Collateral Agent
     (or at least 10 days in the case of nonpayment of premium).

          5.15 Fees, etc. On the Initial Borrowing Date, the Borrower shall
have paid to each Agent and each Lender all costs, fees and expenses
(including, without limitation, legal fees and expenses) payable to such Agent
and such Lender to the extent then due.

          SECTION 6. Conditions Precedent to All Credit Events. The obligation
of each Lender to make Loans (including Loans made on the Initial Borrowing
Date and the Initial Multiple Draw II Term Loan Borrowing Date but excluding
any Mandatory Borrowings made pursuant to Section 1.01(e)), and the obligation
of the Issuing Lender to issue Letters of Credit, is subject, at the time of
each such Credit Event (except as hereinafter indicated), to the satisfaction
of the following conditions:

          6.01 No Default; Representations and Warranties. At the time of each
such Credit Event and also after giving effect thereto (i) there shall exist no
Default or Event of Default and (ii) all representations and warranties
contained herein and in the other Credit Documents shall be true and correct in
all material respects with the same effect as though such representations and
warranties had been made on the date of such Credit Event (it being understood
and agreed that any representation or warranty which by its terms is made as of
a specified date shall be required to be true and correct in all material
respects only as of such specified date).

          6.02 Notice of Borrowing; Letter of Credit Request. (a) Prior to the
making of each Loan (other than a Swingline Loan or a Revolving Loan made
pursuant to a Mandatory Borrowing), the Administrative Agent shall have
received a Notice of Borrowing meeting the requirements of Section 1.03(a).
Prior to the making of each Swingline Loan, the Swingline Lender shall have
received the notice referred to in Section 1.03(b)(i).

          (b) Prior to the issuance of each Letter of Credit, the
Administrative Agent and the Issuing Lender shall have received a Letter of
Credit Request meeting the requirements of Section 2.03(a).

          6.03 Advanced Messaging Units Thresholds. (a) At the time of any
Credit Event where, after giving effect to such Credit Event, the aggregate
amount of Loans outstanding plus the Letter of Credit Outstandings will exceed
$50,000,000, (i) the number of Advanced Messaging Units in service by the
Borrower shall exceed 15,000 and (ii) the Borrower shall have delivered to the
Administrative Agent an officer's certificate of the Borrower certifying the
number of Advance Messaging Units in service by the Borrower at such time.

          (b) At the time of any Credit Event where, after giving effect to
such Credit Event, the aggregate amount of Loans outstanding plus the Letter of
Credit Outstandings at such time will exceed $75,000,000, (i) the number of
Advanced Messaging Units in service by the Borrower shall exceed (x) in the
case of any Credit Event which is an incurrence of Term Loans, the applicable
Minimum Advanced Messaging Units Amount and (y) in the case of any Credit Event
which is an incurrence of Revolving Loans, Swingline Loans or an issuance of a
Letter of


                                     -41-
<PAGE>   43

Credit, 75,000 less any Migrated Units and (ii) the Borrower shall have
delivered to the Administrative Agent an officer's certificate of the Borrower
certifying as to the number of Advanced Messaging Units in service by the
Borrower at such time.

          6.04 Officer's Certificate as to Compliance under the 11-1/4% Senior
Subordinated Discount Notes and the 15% Senior Discount Notes. At the time of
the making of any Multiple Draw II Term Loans, the Borrower shall have
delivered to the Administrative Agent (i) an officer's certificate of the
Borrower (accompanied by any required financial calculations in reasonable
detail) and (ii) to the extent reasonably requested by either Agent, an opinion
in form and substance satisfactory to the Agents from counsel to the Borrower
satisfactory to the Agents certifying (or, in the case of preceding clause
(ii), opining) that the incurrence of such Multiple Draw II Term Loans will not
violate the terms of either the 11-1/4% Senior Subordinated Discount Note
Documents or the 15% Senior Discount Note Documents.

          6.05 Special Conditions To Multiple Draw II Term Loans. At the time
of the making of any Multiple Draw II Term Loans, (i) each Lender making any
Multiple Draw II Term Loans which has theretofore requested that a promissory
note with respect thereto be executed and delivered in accordance with the
requirements of Section 1.05 shall have received its respective Multiple Draw
II Term Note executed (and appropriately completed) in accordance with the
relevant requirements of Section 1.05 and (ii) any additional conditions with
respect to the relevant Multiple Draw II Term Loan Sub-Facility specified in
the respective Multiple Draw II Term Loan Commitment Agreements shall have been
satisfied.

          The acceptance of the benefits of each Credit Event shall constitute
a representation and warranty by the Borrower to the Administrative Agent and
each of the Lenders that all the conditions specified in Section 5 (with
respect to Credit Events on the Initial Borrowing Date) and in this Section 6
(with respect to Credit Events on or after the Initial Borrowing Date) and
applicable to such Credit Event exist as of that time. All of the Notes,
certificates, legal opinions and other documents and papers referred to in
Section 5 and in this Section 6, unless otherwise specified, shall be delivered
to the Administrative Agent at the Notice Office for the account of each of the
Lenders and, except for the Notes, in sufficient counterparts or copies for
each of the Lenders and shall be in form and substance reasonably satisfactory
to the Agents and the Required Lenders.

          SECTION 7. Representations, Warranties and Agreements. In order to
induce the Lenders to enter into this Agreement and to make the Loans, and
issue (or participate in) the Letters of Credit as provided herein, the
Borrower makes the following representations, warranties and agreements, all of
which shall survive the execution and delivery of this Agreement and the Notes
and the making of the Loans and issuance of the Letters of Credit, with the
occurrence of each Credit Event on or after the Initial Borrowing Date being
deemed to constitute a representation and warranty that the matters specified
in this Section 7 are true and correct in all material respects on and as of
the Initial Borrowing Date and on the date of each such other Credit Event (it
being understood and agreed that any representation or warranty which by its
terms is made as of a specified date shall be required to be true and correct
in all material respects only as of such specified date).


                                     -42-
<PAGE>   44

          7.01 Corporate Status. Each of the Borrower and each of its
Subsidiaries (i) is a duly organized and validly existing corporation,
partnership or limited liability company, as the case may be, in good standing
under the laws of the jurisdiction of its organization, (ii) has the corporate,
partnership or limited liability company power and authority, as the case may
be, to own its property and assets and to transact the business in which it is
engaged and presently proposes to engage and (iii) is duly qualified and is
authorized to do business and is in good standing in each jurisdiction where
the ownership, leasing or operation of its property or the conduct of its
business requires such qualifications except for failures to be so qualified
which, individually or in the aggregate, could not reasonably be expected to
have a material adverse effect on the business, operations, property, assets,
liabilities, condition (financial or otherwise) or prospects of the Borrower or
of the Borrower and its Subsidiaries taken as a whole.

          7.02 Corporate and Other Power and Authority. Each Credit Party has
the corporate, partnership or limited liability company power and authority, as
the case may be, to execute, deliver and perform the terms and provisions of
each of the Credit Documents to which it is party and has taken all necessary
action to authorize the execution, delivery and performance by it of each of
such Credit Documents. Each Credit Party has duly executed and delivered each
of the Credit Documents to which it is party, and each of such Credit Documents
constitutes its legal, valid and binding obligation enforceable in accordance
with its terms, except to the extent that the enforceability thereof may be
limited by applicable bankruptcy, insolvency, reorganization, moratorium or
other similar laws generally affecting creditors' rights and by equitable
principles (regardless of whether enforcement is sought in equity or at law).

          7.03 No Violation. Neither the execution, delivery or performance by
any Credit Party of the Credit Documents to which it is a party, nor compliance
by it with the terms and provisions thereof, (i) will contravene any provision
of any law, statute, rule or regulation or any order, writ, injunction or
decree of any court or governmental instrumentality, (ii) will conflict with or
result in any breach of any of the terms, covenants, conditions or provisions
of, or constitute a default under, or result in the creation or imposition of
(or the obligation to create or impose) any Lien (except pursuant to the
Security Documents) upon any of the property or assets of the Borrower or any
of its Subsidiaries pursuant to the terms of any indenture, mortgage, deed of
trust, credit agreement or loan agreement, or any other material agreement,
contract or instrument, in each case to which the Borrower or any of its
Subsidiaries is a party or by which it or any of its property or assets is
bound or to which it may be subject or (iii) will violate any provision of the
certificate or articles of incorporation or by-laws (or equivalent
organizational documents) of the Borrower or any of its Subsidiaries.

          7.04 Approvals. No order, consent, approval, license, authorization
or validation of, or filing, recording or registration with (except for (i)
those that have otherwise been obtained or made on or prior to the Initial
Borrowing Date and which remain in full force and effect on the Initial
Borrowing Date or (ii) filings and recordings required to perfect the security
interests under the Security Documents and releases of certain existing liens
on assets of the Borrower or any of its Subsidiaries, in each case which shall
be made within 10 days following the Initial Borrowing Date), or exemption by,
any governmental or public body or authority, or any subdivision thereof, is
required to authorize, or is required in connection with, (i) the execution,
delivery and


                                     -43-
<PAGE>   45

performance of any Credit Document or (ii) the legality, validity, binding
effect or enforceability of any such Credit Document.

          7.05 Financial Statements; Financial Condition; Undisclosed
Liabilities; Projections; etc. (a) The consolidated balance sheet of the
Borrower and its Subsidiaries for its fiscal year ended on December 31, 1998
and the related consolidated statements of income, cash flows and shareholders'
equity of the Borrower and its Subsidiaries for the fiscal year ended on such
date, copies of which have been furnished to the Lenders prior to the Initial
Borrowing Date, present fairly in all material respects the financial position
of the Borrower and its Subsidiaries at the dates of such balance sheet and the
consolidated results of the operations of the Borrower and its Subsidiaries for
the periods covered thereby. All of the foregoing financial statements have
been prepared in accordance with generally accepted accounting principles
consistently applied (except, in the case of the aforementioned quarterly
financial statements, for normal year-end audit adjustments and the absence of
footnotes). After giving effect to the transactions contemplated herein (but
for this purpose assuming that such transactions and the related financing had
occurred prior to December 31, 1998), since December 31, 1998, there has been
no material adverse change in the business, operations, property, assets,
liabilities, condition (financial or otherwise) or prospects of the Borrower or
of the Borrower and its Subsidiaries taken as a whole.

          (b) On and as of the Initial Borrowing Date and after giving effect
to the transactions contemplated herein and to all Indebtedness (including the
Loans) being incurred or assumed and Liens created by the Borrower in
connection therewith (i) the sum of the assets, at a fair valuation, of each of
the Borrower on a stand-alone basis and of the Borrower and its Subsidiaries
taken as a whole will exceed its debts; (ii) each of the Borrower on a
stand-alone basis and the Borrower and its Subsidiaries taken as a whole has
not incurred and does not intend to incur, and does not believe that it will
incur, debts beyond its ability to pay such debts as such debts mature; and
(iii) each of the Borrower on a stand-alone basis and the Borrower and its
Subsidiaries taken as a whole will have sufficient capital with which to
conduct its business. For purposes of this Section 7.05(b), "debt" means any
liability on a claim, and "claim" means (a) right to payment, whether or not
such a right is reduced to judgment, liquidated, unliquidated, fixed,
contingent, matured, unmatured, disputed, undisputed, legal, equitable,
secured, or unsecured or (b) right to an equitable remedy for breach of
performance if such breach gives rise to a payment, whether or not such right
to an equitable remedy is reduced to judgment, fixed, contingent, matured,
unmatured, disputed, undisputed, secured or unsecured. The amount of contingent
liabilities at any time shall be computed as the amount that, in the light of
all the facts and circumstances existing at such time, represents the amount
that can reasonably be expected to become an actual or matured liability.

          (c) Except as fully disclosed in the financial statements delivered
pursuant to Section 7.05(a), there were as of the Initial Borrowing Date no
liabilities or obligations with respect to the Borrower or any of its
Subsidiaries of any nature whatsoever (whether absolute, accrued, contingent or
otherwise and whether or not due) which, either individually or in aggregate,
could reasonably be expected to be material to the Borrower or to the Borrower
and its Subsidiaries taken as a whole. As of the Initial Borrowing Date, the
Borrower does not know of any basis for the assertion against it or any of its
Subsidiaries of any liability or obligation of


                                     -44-
<PAGE>   46

any nature whatsoever that is not fully disclosed in the financial statements
delivered pursuant to Section 7.05(a) which, either individually or in the
aggregate, could reasonably be expected to be material to the Borrower or to
the Borrower and its Subsidiaries taken as a whole.

          (d) The Projections delivered to the Agents and the Lenders prior to
the Initial Borrowing Date have been prepared in good faith and are based on
reasonable assumptions, and there are no statements or conclusions in the
Projections which are based upon or include information known to the Borrower
to be misleading in any material respect or which fail to take into account
material information known to the Borrower regarding the matters reported
therein. On the Initial Borrowing Date, the Borrower believes that the
Projections are reasonable and attainable, it being recognized by the Lenders,
however, that projections as to future events are not to be viewed as facts and
that the actual results during the period or periods covered by the Projections
may differ from the projected results and that the differences may be material.

          7.06 Litigation. There are no actions, suits or proceedings pending
or, to the best knowledge of the Borrower, threatened (i) with respect to any
Credit Document, (ii) with respect to any material Indebtedness of the Borrower
or any of its Subsidiaries or (iii) that are reasonably likely to materially
and adversely affect the business, operations, property, assets, liabilities,
condition (financial or otherwise) or prospects of the Borrower or of the
Borrower and its Subsidiaries taken as a whole.

          7.07 True and Complete Disclosure. All factual information (taken as
a whole) furnished by or on behalf of any Credit Party in writing to any Agent
or any Lender (including, without limitation, all information contained in the
Credit Documents) for purposes of or in connection with this Agreement, the
other Credit Documents or any transaction contemplated herein or therein is,
and all other such factual information (taken as a whole) hereafter furnished
by or on behalf of any Credit Party in writing to any Agent or any Lender will
be, true and accurate in all material respects on the date as of which such
information is dated or certified and not incomplete by omitting to state any
fact necessary to make such information (taken as a whole) not misleading in
any material respect at such time in light of the circumstances under which
such information was provided.

          7.08 Use of Proceeds; Margin Regulations. (a) All proceeds of the
Multiple Draw I Term Loans and Revolving Loans will be used by the Borrower (i)
to refinance the Existing Credit Agreement and to pay fees and expenses related
thereto, (ii) to fund the buildout of the Borrower's "NPCS" network and related
equipment and (iii) for working capital and general corporate purposes of the
Borrower and its Subsidiaries.

          (b) All proceeds of the Multiple Draw II Term Loans will be used by
the Borrower (i) to fund the buildout of the Borrower's "NPCS" network and
related equipment, (ii) to finance the redemption, repurchase or other
retirement of outstanding 15% Senior Discount Notes in an aggregate principal
amount not to exceed $50,000,000 and (iii) for working capital and general
corporate purposes of the Borrower and its Subsidiaries.

          (c) No part of any Credit Event (or the proceeds thereof) will be
used to purchase or carry any Margin Stock or to extend credit for the purpose
of purchasing or carrying


                                     -45-
<PAGE>   47

any Margin Stock. Neither the making of any Loan nor the use of the proceeds
thereof nor the occurrence of any other Credit Event will violate or be
inconsistent with the provisions of Regulation T, U or X of the Board of
Governors of the Federal Reserve System.

          7.09 Tax Returns and Payments. Each of the Borrower and each of its
Subsidiaries has filed all federal and state income tax returns and all other
material tax returns, domestic and foreign, required to be filed by it and has
paid all taxes and assessments payable by it which have become due, except for
those contested in good faith and adequately disclosed and fully provided for
on the financial statements of the Borrower and its Subsidiaries in accordance
with generally accepted accounting principles. Each of the Borrower and each of
its Subsidiaries has at all times paid, or have provided adequate reserves (in
the good faith judgment of the management of the Borrower) for the payment of,
all federal, state, local and foreign income taxes applicable for all prior
fiscal years and for the current fiscal year to date. There is no material
action, suit, proceeding, investigation, audit, or claim now pending or, to the
best knowledge of the Borrower threatened, by any authority regarding any taxes
relating to the Borrower or any of its Subsidiaries. As of the Initial
Borrowing Date, neither the Borrower nor any of its Subsidiaries has entered
into an agreement (other than the Consent Extending the Time for Assessment of
Taxes, dated as of January 11, 1999, between the Borrower and the Commonwealth
of Massachusetts Department of Revenue Audit Division) or waiver or been
requested to enter into an agreement or waiver extending any statute of
limitations relating to the payment or collection of taxes of the Borrower or
any of its Subsidiaries, or is aware of any circumstances that would cause the
taxable years or other taxable periods of the Borrower or any of its
Subsidiaries not to be subject to the normally applicable statute of
limitations.

          7.10 Compliance with ERISA. (i) Schedule IV sets forth, as of the
Initial Borrowing Date, each Plan. Each Plan (and each related trust, insurance
contract or fund) is in compliance with its terms and with all applicable laws,
including, without limitation, ERISA and the Code except to the extent that any
failure to so comply would not result in a material liability to the Borrower,
any of its Subsidiaries or any ERISA Affiliates; each Plan (and each related
trust, if any) which is intended to be qualified under Section 401(a) of the
Code has received a determination letter from the Internal Revenue Service to
the effect that it meets the requirements of Sections 401(a) and 501(a) of the
Code; no Reportable Event has occurred; no Plan which is a multiemployer plan
(as defined in Section 4001(a)(3) of ERISA) is insolvent or in reorganization;
no Plan has an Unfunded Current Liability except to the extent that any such
Unfunded Current Liability could not reasonably be expected to result in a
material liability to the Borrower, any of its Subsidiaries or any ERISA
Affiliates; no Plan which is subject to Section 412 of the Code or Section 302
of ERISA has an accumulated funding deficiency, within the meaning of such
sections of the Code or ERISA, or has applied for or received a waiver of an
accumulated funding deficiency or an extension of any amortization period,
within the meaning of Section 412 of the Code or Section 303 or 304 of ERISA;
all contributions required to be made with respect to a Plan have been timely
made except to the extent that any failure to do so would not result in a
material liability to the Borrower, any of its Subsidiaries or any ERISA
Affiliates; neither the Borrower nor any Subsidiary of the Borrower nor any
ERISA Affiliate has incurred any material liability (including any indirect,
contingent or secondary liability) to or on account of a Plan pursuant to
Section 409, 502(i), 502(l), 515, 4062, 4063, 4064, 4069, 4201, 4204 or 4212 of
ERISA or Section 401(a)(29), 4971 or 4975 of the Code or expects to incur any
such material


                                     -46-
<PAGE>   48

liability under any of the foregoing sections with respect to any Plan; no
condition exists which presents a material risk to the Borrower or any
Subsidiary of the Borrower or any ERISA Affiliate of incurring a material
liability to or on account of a Plan pursuant to the foregoing provisions of
ERISA and the Code; no proceedings have been instituted by the PBGC to
terminate or appoint a trustee to administer any Plan which is subject to Title
IV of ERISA; no action, suit, proceeding, hearing, audit or investigation with
respect to the administration, operation or the investment of assets of any
Plan (other than routine claims for benefits) is pending, expected or, to the
knowledge of the Borrower, threatened except to the extent that any such
action, suit, proceeding, hearing, audit or investigation would not result in a
material liability to the Borrower or any of its Subsidiaries; using actuarial
assumptions and computation methods consistent with Part 1 of subtitle E of
Title IV of ERISA, the aggregate liabilities of the Borrower and its
Subsidiaries and its ERISA Affiliates to all Plans which are multiemployer
plans (as defined in Section 4001(a)(3) of ERISA) in the event of a complete
withdrawal therefrom, as of the close of the most recent fiscal year of each
such Plan ended prior to the date of the most recent Credit Event, would not
exceed an amount that is material to the Borrower, any Subsidiary of the
Borrower or any ERISA Affiliate; each group health plan (as defined in Section
607(1) of ERISA or Section 4980B(g)(2) of the Code) which covers or has covered
employees or former employees of the Borrower, any Subsidiary of the Borrower,
or any ERISA Affiliate has at all times been operated in compliance with the
provisions of Part 6 of subtitle B of Title I of ERISA and Section 4980B of the
Code except as would not result in any material liability; no lien imposed
under the Code or ERISA on the assets of the Borrower or any Subsidiary of the
Borrower or any ERISA Affiliate exists or is likely to arise on account of any
Plan; and the Borrower and its Subsidiaries do not maintain or contribute to
any employee welfare benefit plan (as defined in Section 3(1) of ERISA) which
provides benefits to retired employees or other former employees (other than as
required by Section 601 of ERISA) or any Plan the obligations with respect to
which could reasonably be expected to have a material adverse effect on the
ability of the Borrower to perform its obligations to the Agents and the
Lenders hereunder.

          (ii) Each Foreign Pension Plan has been maintained in substantial
compliance with its terms and with the requirements of any and all applicable
laws, statutes, rules, regulations and orders and has been maintained, where
required, in good standing with applicable regulatory authorities except to the
extent that any failure to do so would not result in a material liability to
the Borrower or any of its Subsidiaries. All contributions required to be made
with respect to a Foreign Pension Plan have been timely made except to the
extent that any failure to do so would not result in a material liability to
the Borrower or any of its Subsidiaries. Neither the Borrower nor any of its
Subsidiaries has incurred any obligation in connection with the termination of
or withdrawal from any Foreign Pension Plan. The present value of the accrued
benefit liabilities (whether or not vested) under each Foreign Pension Plan,
determined as of the end of the Borrowers' recently ended fiscal year on the
basis of actuarial assumptions, each of which is reasonable, did not exceed the
current value of the assets of such Foreign Pension Plan allocable to such
benefit liabilities by more than an amount that is material to the Borrower,
any Subsidiary of the Borrower or any ERISA Affiliate.

          7.11 The Security Documents. (a) The provisions of the Security
Agreement are effective to create in favor of the Collateral Agent for the
benefit of the Secured Creditors a legal, valid and enforceable security
interest in all right, title and interest of the Credit Parties in the


                                     -47-
<PAGE>   49

Security Agreement Collateral described therein, and the Collateral Agent, for
the benefit of the Secured Creditors, has a fully perfected first (or, in the
case of the "Collateral" under, and as defined in, the Vendor Financing
Agreement, a second) lien on, and security interest in, all right, title and
interest in all of the Security Agreement Collateral described therein, subject
to no other Liens other than Permitted Liens. The recordation of (x) the Grant
of Security Interest in U.S. Patents and (y) the Grant of Security Interest in
U.S. Trademarks in the form attached to the Security Agreement, in each case in
the United States Patent and Trademark Office, together with filings on Form
UCC-1 made pursuant to the Security Agreement, will create, as may be perfected
by such filings and recordation, a perfected security interest in the United
States trademarks and patents covered by the Security Agreement, and the
recordation of the Grant of Security Interest in U.S. Copyrights in the form
attached to the Security Agreement with the United States Copyright Office,
together with filings on Form UCC-1 made pursuant to the Security Agreement,
will create, as may be perfected by such filings and recordation, a perfected
security interest in the United States copyrights covered by the Security
Agreement.

          (b) The security interests created in favor of the Collateral Agent,
as Pledgee, for the benefit of the Secured Creditors, under the Pledge
Agreement constitute first priority perfected security interests in the Pledge
Agreement Collateral described in the Pledge Agreement, subject to no security
interests of any other Person. No filings or recordings are required in order
to perfect (or maintain the perfection or priority of) the security interests
created in the Pledge Agreement Collateral under the Pledge Agreement.

          7.12 Properties. All Real Property owned or leased by the Borrower or
any of its Subsidiaries as of the Initial Borrowing Date (other than such Real
Property consisting of the Borrower's or any of its Subsidiaries' transmitter
sites), and the nature of the interest therein, is correctly set forth in
Schedule III. Each of the Borrower and each of its Subsidiaries has good and
marketable title to all material properties owned by them, including all
property reflected in Schedule III and in the balance sheets referred to in
Section 7.05(a) (except as sold or otherwise disposed of since the date of such
balance sheet in the ordinary course of business or as permitted by the terms
of this Agreement), free and clear of all Liens, other than Permitted Liens.

          7.13 Capitalization. (a) As of December 31, 1998, the authorized
capital stock of the Borrower consists of (i) 60,000,000 shares of Class A
common stock, $.0001 par value per share, of which 34,536,512 shares are issued
and outstanding, (ii) 12,000,000 shares of Class B common stock, $.0001 par
value per share, of which 3,809,363 shares are issued and outstanding, (iii)
2,000,000 shares of Class C common stock, $.0001 par value per share, of which
1,428,472 shares are issued and outstanding, (iv) 1,000,000 shares of Class D
common stock, $.0001 par value per share, of which 623,945 shares are issued
and outstanding and (v) 10,000,000 shares of preferred stock, $.0001 par value
per share, of which no shares are issued and outstanding. All outstanding
shares of the capital stock of the Borrower have been duly and validly issued
and are fully paid and non-assessable. Except as set forth on Schedule V, on
the Initial Borrowing Date, the Borrower does not have outstanding any
securities convertible into or exchangeable for its capital stock or
outstanding any rights to subscribe for or to purchase, or any options for the
purchase of, or any agreement providing for the issuance (contingent or
otherwise) of, or any calls, commitments or claims of any character relating
to, its capital stock, except for options to purchase shares of the Borrower's
common stock which may be issued from time to time.


                                     -48-
<PAGE>   50

          7.14 Subsidiaries. As of the Initial Borrowing Date, the
corporations, partnerships and limited liability companies listed on Schedule
VI are all of the Subsidiaries of the Borrower. Schedule VI correctly sets
forth, as of the Initial Borrowing Date, the percentage ownership (direct or
indirect) of the Borrower in each class of capital stock or other equity of
each of its Subsidiaries and also identifies the direct owner thereof.

          7.15 Compliance with Statutes, etc. Each of the Borrower and each of
its Subsidiaries is in compliance with all applicable statutes, regulations and
orders of, and all applicable restrictions imposed by, all governmental bodies,
domestic or foreign, in respect of the conduct of its business, the holding of
the FCC Licenses, and the ownership of its property (including, without
limitation, applicable statutes, regulations, orders and restrictions relating
to environmental standards and controls), except such noncompliances as could
not, individually or in the aggregate, reasonably be expected to have a
material adverse effect on the business, operations, property, assets,
liabilities, condition (financial or otherwise) or prospects of the Borrower or
of the Borrower and its Subsidiaries taken as a whole.

          7.16 Investment Company Act. Neither the Borrower nor any of its
Subsidiaries is an "investment company" or a company "controlled" by an
"investment company," within the meaning of the Investment Company Act of 1940,
as amended.

          7.17 Public Utility Holding Company Act. Neither the Borrower nor any
of its Subsidiaries is a "holding company," or a "subsidiary company" of a
"holding company," or an "affiliate" of a "holding company" or of a "subsidiary
company" of a "holding company" within the meaning of the Public Utility
Holding Company Act of 1935, as amended.

          7.18 Environmental Matters. (a) Each of the Borrower and each of its
Subsidiaries has complied with, and on the date of each Credit Event is in
compliance with, all applicable Environmental Laws and the requirements of any
permits issued under such Environmental Laws. There are no pending or, to the
best knowledge of the Borrower, threatened Environmental Claims against the
Borrower or any of its Subsidiaries (including any such claim arising out of
the ownership, lease or operation by the Borrower or any of its Subsidiaries of
any Real Property no longer owned, leased or operated by the Borrower or any of
its Subsidiaries) or any Real Property owned, leased or operated by the
Borrower or any of its Subsidiaries. There are no facts, circumstances,
conditions or occurrences with respect to the business or operations of the
Borrower or any of its Subsidiaries, or any Real Property owned, leased or
operated by the Borrower or any of its Subsidiaries (including, to the best
knowledge of the Borrower, any Real Property formerly owned, leased or operated
by the Borrower or any of its Subsidiaries but no longer owned, leased or
operated by the Borrower or any of its Subsidiaries) or, to the best knowledge
of the Borrower, any property adjoining or adjacent to any such Real Property
that could be reasonably expected (i) to form the basis of an Environmental
Claim against the Borrower or any of its Subsidiaries or any Real Property
owned, leased or operated by the Borrower or any of its Subsidiaries or (ii) to
cause any Real Property owned, leased or operated by the Borrower or any of its
Subsidiaries to be subject to any restrictions on the ownership, lease,
occupancy or transferability of such Real Property by the Borrower or any of
its Subsidiaries under any applicable Environmental Law.


                                     -49-
<PAGE>   51

          (b) Neither the Borrower nor any of its Subsidiaries has at any time
generated, used, treated or stored Hazardous Materials on, or transported
Hazardous Materials to or from, any Real Property owned, leased or operated by
the Borrower or any of its Subsidiaries where such generation, use, treatment,
storage or transportation has violated or could reasonably be expected to
violate any Environmental Law or give rise to an Environmental Claim. Neither
the Borrower nor any of its Subsidiaries has at any time Released any Hazardous
Materials on or from any Real Property owned, leased or operated by the
Borrower or any of its Subsidiaries where such Release has violated or could
reasonably be expected to violate any applicable Environmental Law.

          (c) Notwithstanding anything to the contrary in this Section 7.18,
the representations and warranties made in this Section 7.18 shall not be
untrue unless the effect of any or all conditions, violations, claims,
restrictions, failures and noncompliances of the types described above could,
either individually or in the aggregate, reasonably be expected to have a
material adverse effect on the business, operations, property, assets,
liabilities, condition (financial or otherwise) or prospects of the Borrower or
of the Borrower and its Subsidiaries taken as a whole.

          7.19 Labor Relations. Neither the Borrower nor any of its
Subsidiaries is engaged in any unfair labor practice that could reasonably be
expected to have a material adverse effect on the Borrower or on the Borrower
and its Subsidiaries taken as a whole. There is (i) no unfair labor practice
complaint pending against the Borrower or any of its Subsidiaries or, to the
best knowledge of the Borrower, threatened against any of them, before the
National Labor Relations Board, and no grievance or arbitration proceeding
arising out of or under any collective bargaining agreement is so pending
against the Borrower or any of its Subsidiaries or, to the best knowledge of
the Borrower, threatened against any of them, (ii) no strike, labor dispute,
slowdown or stoppage pending against the Borrower or any of its Subsidiaries
or, to the best knowledge the Borrower, threatened against the Borrower or any
of its Subsidiaries and (iii) no union representation question exists with
respect to the employees of the Borrower or any of its Subsidiaries, except
(with respect to any matter specified in clause (i), (ii) or (iii) above,
either individually or in the aggregate) such as could not reasonably be
expected to have a material adverse effect on the business, operations,
property, assets, liabilities, condition (financial or otherwise) or prospects
of the Borrower or of the Borrower and its Subsidiaries taken as a whole.

          7.20 Patents, Licenses, Franchises and Formulas. Each of the Borrower
and each of its Subsidiaries owns or has the right to use all the patents,
trademarks, permits, service marks, trade names, copyrights, licenses,
franchises, proprietary information (including but not limited to rights in
computer programs and databases) and formulas, or rights with respect to the
foregoing, and has obtained assignments of all leases and other rights of
whatever nature, necessary for the present conduct of its business, without any
known conflict with the rights of others which, or the failure to obtain which,
as the case may be, could reasonably be expected to result in a material
adverse effect on the business, operations, property, assets, liabilities,
condition (financial or otherwise) or prospects of the Borrower or of the
Borrower and its Subsidiaries taken as a whole.

          7.21 Indebtedness. Schedule VII sets forth a true and complete list
of all Indebtedness (including Contingent Obligations) of the Borrower and its
Subsidiaries as of


                                     -50-
<PAGE>   52

the Initial Borrowing Date and which is to remain outstanding after the Initial
Borrowing Date (excluding the Loans, the Letters of Credit, the 11-1/4% Senior
Subordinated Discount Notes, the 15% Senior Discount Notes and the Vendor
Financing Agreement, the "Existing Indebtedness"), in each case showing the
aggregate principal amount thereof and the name of the respective borrower and
any Credit Party or any of its Subsidiaries which directly or indirectly
guarantees such debt.

          7.22 FCC Licenses. The License Subsidiaries hold all FCC licenses and
authorizations as are necessary to the Borrower's business (collectively, the
"FCC Licenses"). Each of the FCC Licenses has been validly issued and is in
full force and effect. All FCC Licenses existing on the Initial Borrowing Date
and their respective expiration dates are listed on Schedule VIII and true
copies of all such material FCC Licenses, together with any and all
modifications, amendments, and pending applications therefor or relating
thereto, as of the Initial Borrowing Date have been furnished to the
Administrative Agent. The Borrower has no knowledge of any condition imposed by
the FCC as part of any FCC License which is neither set forth on the face
thereof as issued by the FCC nor contained in the FCC Rules applicable
generally to businesses of the type, nature, class or location of the Borrower
and its Subsidiaries. The Borrower and its Subsidiaries are in compliance in
all material respects with the terms and conditions of the FCC Licenses
applicable generally to businesses of the type, nature, class or location of
the Borrower and its Subsidiaries. The Borrower and its Subsidiaries are in
compliance in all material respects with the terms and conditions of the FCC
Licenses applicable to it and with the FCC Rules and the Communications Act. No
proceedings are pending or are, to the best knowledge of the Borrower,
threatened which may reasonably be expected to result in (i) the revocation,
rescission, adverse modification, non-renewal or suspension of any of the FCC
Licenses, (ii) the denial of any pending material applications, (iii) the
issuance of any cease and desist order or (iv) the imposition of any material
fines, forfeitures or other administrative actions by the FCC with respect to
the Borrower or any of its Subsidiaries, other than proceedings affecting the
wireless messaging services industry in general. All material reports,
applications and other documents required to be filed by the Borrower or any of
its Subsidiaries, as appropriate, with the FCC have in all material respects
been timely filed and all such reports, applications and documents are true,
correct and complete in all respects, and the Borrower has no knowledge of any
matters (i) which could reasonably be expected to result in the adverse
modification, suspension or revocation of or the refusal to renew any of the
FCC Licenses or the imposition on the Borrower or any of its Subsidiaries of
any material fines or forfeitures by the FCC or (ii) which could reasonably be
expected to result in the revocation, rescission, reversal or adverse
modification of any of the Borrower's or any of its Subsidiaries'
authorizations to operate as currently authorized as applicable, under the
Communications Act, as well as the FCC Rules. There are no unsatisfied or
otherwise outstanding citations issued by the FCC with respect to the Borrower
or any of its Subsidiaries or any of their respective operations.

          7.23 Other Governmental Authorizations. In addition to the FCC
Licenses issued by the FCC, the Borrower and its Subsidiaries hold all material
licenses and authorizations issued by any other governmental entity necessary
to operate their respective businesses (collectively, the "Governmental
Authorizations"). Each of the Governmental Authorizations has been validly
issued and is in full force and effect. The Governmental Authorizations as of
the Initial Borrowing Date are listed on Schedule IX, with any expiration date
for any such authorization


                                     -51-
<PAGE>   53

identified on Schedule IX. The Borrower has no knowledge of any condition
imposed by any governmental entity on any of the Governmental Authorizations
which is neither set forth on the face thereof nor contained in the rules,
policies, and regulations of the particular governmental entity issuing the
authorization. The Borrower and its Subsidiaries have been and are in
compliance in all material respects with the terms and conditions of the
Governmental Authorizations applicable to them. Other than proceedings of a
general nature, no proceedings are pending or are, to the best knowledge of the
Borrower, threatened which may reasonably be expected to result in (i) the
revocation, rescission, adverse modification, non-renewal or suspension of any
Governmental Authorizations, (ii) the denial of any pending applications
therefor, (iii) the issuance of any cease and desist order, or (iv) the
imposition of any material fines, forfeitures, or other administrative actions
by a governmental entity. All material reports, applications and other
documents required to be filed by the Borrower or any of its Subsidiaries, as
appropriate, with the governmental entity issuing a Government Authorization
have in all material respects been timely filed, and all such reports,
applications and documents are true, correct and complete in all material
respects, and the Borrower has no knowledge of any matters which could
reasonably be expected to result in (i) the suspension, revocation, rescission,
adverse modification of or the refusal to renew any of the Governmental
Authorizations or (ii) the imposition on the Borrower or any of its
Subsidiaries of any material fines or forfeitures. There are no material
unsatisfied or otherwise outstanding citations issued by any governmental
entity with the respect to the Borrower or any of its Subsidiaries.

          7.24 Qualification. The Borrower has no knowledge of any fact which
would, upon completion of the transactions contemplated herein, under present
law (including the Communications Act) and present FCC Rules, disqualify the
Borrower or any of its Subsidiaries as an assignee or transferee of the FCC
Licenses or result in the imposition of any adverse condition on, or adverse
modification of, the FCC Licenses, and the Borrower shall not take, or fail to
take, any action which the Borrower knows or has reason to know would cause
such disqualification, condition or modification. Should any facts which would
cause such disqualification, condition, or modification become known to the
Borrower, the Borrower will promptly notify the Administrative Agent in writing
thereof.

          7.25 Insurance. Schedule X sets forth a true and complete listing of
all insurance maintained by the Borrower and its Subsidiaries as of the Initial
Borrowing Date, with the amounts insured (and any deductibles) set forth
thereon.

          7.26 Year 2000. All of the Borrower's and its Subsidiaries'
Information Systems and Equipment are either Year 2000 Compliant, or any
reprogramming, remediation or any other corrective action, including the
internal testing of all such Information Systems and Equipment, will be
completed by September 30, 1999. Further, to the extent that any such
reprogramming, remediation or other corrective action is required, the cost
thereof (as well as the cost of the reasonably foreseeable consequences of the
failure to become Year 2000 Compliant) to the Borrower and its Subsidiaries
(including, without limitation, reprogramming errors and the failure of other
systems or equipment) will not have a material adverse effect on the business,
operations, property, assets, liabilities, condition (financial or otherwise)
or prospects of the Borrower or of the Borrower and its Subsidiaries taken as a
whole.


                                     -52-
<PAGE>   54

          7.27 11-1/4% Senior Subordinated Discount Notes. The subordination
provisions contained in the 11-1/4% Senior Subordinated Discount Notes and the
other 11-1/4% Senior Subordinated Discount Note Documents are enforceable
against the respective Credit Parties party thereto and the respective holders
of the 11-1/4% Senior Subordinated Discount Notes and all Obligations are
within the definitions of "Designated Senior Indebtedness" and "Senior
Indebtedness" included in such subordination provisions. In addition, this
Agreement constitutes the "Credit Agreement" under, and as defined in, the
11-1/4% Senior Subordinated Discount Note Indenture.

          7.28 License Subsidiaries. The License Subsidiaries have no
significant assets other than the respective FCC Licenses held by them and any
subsequent renewals thereof. In addition, all the FCC Licenses used in the
business of the Borrower or any Subsidiary thereof shall be held by one or more
of the License Subsidiaries.

          SECTION 8. Affirmative Covenants. The Borrower hereby covenants and
agrees that on and after the Effective Date and until the Total Commitment and
all Letters of Credit created thereunder have terminated and the Loans, Notes
and Unpaid Drawings (in each case together with interest thereon), Fees and all
other Obligations (other than indemnities described in Section 13.13 which are
not then due and payable) incurred hereunder and thereunder, are paid in full:

          8.01 Information Covenants. The Borrower will furnish to each Lender:

          (a) Monthly Reports. Within 30 days after the end of the first two
fiscal months of each fiscal quarter of the Borrower (commencing with its
fiscal month ending on April 30, 1999), (i) the consolidated balance sheet of
the Borrower and its Subsidiaries as at the end of such fiscal month and the
related consolidated statements of income and retained earnings and statement
of cash flows for such fiscal month and for the elapsed portion of the fiscal
year ended with the last day of such fiscal month, setting forth comparative
figures for the corresponding fiscal month in the prior fiscal year and
comparable budgeted figures for such fiscal month, all of which shall be
certified by the chief financial officer of the Borrower, subject to normal
year-end audit adjustments and the absence of footnotes, and (ii) a
certification of the number of (x) Advanced Messaging Units and (y) other
wireless messaging devices in service by the Borrower, in each case on the last
day of such fiscal month.

          (b) Quarterly Financial Statements. Within 45 days after the close of
the first three quarterly accounting periods in each fiscal year of the
Borrower (commencing with its quarterly accounting period ending on March 31,
1999), (i) the consolidated balance sheet of the Borrower and its Subsidiaries
as at the end of such quarterly accounting period and the related consolidated
statements of income and retained earnings and statement of cash flows for such
quarterly accounting period and for the elapsed portion of the fiscal year
ended with the last day of such quarterly accounting period, (ii) the
consolidated statements of income attributable to each of Traditional Messaging
Services and Advanced Messaging Services for such quarterly accounting period
and for the elapsed portion of the fiscal year ended with the last day of such
quarterly accounting period, in each case in respect of clauses (i) and (ii)
above setting forth comparative figures for the related periods in the prior
fiscal year and comparable budgeted


                                     -53-
<PAGE>   55

figures for such quarterly accounting period, all of which shall be certified
by the chief financial officer of the Borrower, subject to normal year-end
audit adjustments and the absence of footnotes, (iii) management's discussion
and analysis of the material operational and financial developments during such
quarterly accounting period, and (iv) a certification of the number of (x)
Advanced Messaging Units and (y) other wireless messaging devices in service by
the Borrower, in each case on the last day of such quarterly accounting period.

          (c) Annual Financial Statements. Within 90 days after the close of
each fiscal year of the Borrower, (i) the consolidated balance sheet of the
Borrower and its Subsidiaries as at the end of such fiscal year and the related
consolidated statements of income and retained earnings and statement of cash
flows for such fiscal year setting forth comparative figures for the preceding
fiscal year and certified by Arthur Andersen LLP or such other independent
certified public accountants of recognized national standing reasonably
acceptable to the Agents, together with a report of such accounting firm
stating that in the course of its regular audit of the financial statements of
the Borrower and its Subsidiaries, which audit was conducted in accordance with
generally accepted auditing standards, such accounting firm obtained no
knowledge of any Default or an Event of Default which has occurred and is
continuing or, if in the opinion of such accounting firm such a Default or
Event of Default has occurred and is continuing, a statement as to the nature
thereof, (ii) the consolidated statements of income attributable to the
Borrower's Traditional Messaging Services and Advanced Messaging Services for
such fiscal year and setting forth comparative figures for the prior fiscal
year, and (iii) management's discussion and analysis of the material
operational and financial developments during such fiscal year.

          (d) Management Letters. Promptly after the Borrower's or any of its
Subsidiaries' receipt thereof, a copy of any "management letter" received from
its certified public accountants and management's response thereto.

          (e) Budgets and Projections. No later than 45 days following the
first day of each fiscal year of the Borrower, a budget in form reasonably
satisfactory to the Agents (including budgeted statements of income, sources
and uses of cash and balance sheets) prepared by the Borrower (i) for each of
the twelve months of such fiscal year prepared in detail and (ii) for each of
the immediately three succeeding fiscal years prepared in summary form, in each
case setting forth, with appropriate discussion, the principal assumptions upon
which such budgets are based.

          (f) Officer's Certificates. At the time of the delivery of the
financial statements provided for in Sections 8.01(b) and (c), a certificate of
the chief financial officer of the Borrower certifying on behalf of the
Borrower that, to the best of such officer's knowledge, no Default or Event of
Default has occurred and is continuing or, if any Default or Event of Default
has occurred and is continuing, specifying the nature and extent thereof, which
certificate shall (I) set forth in reasonable detail the calculations required
to establish (A) whether the Borrower and its Subsidiaries were in compliance
with the provisions of Sections 4.02(e), 4.02(f) (to the extent delivered with
the financial statements required by Section 8.01(c)), 4.02(g), 9.02(ii),
9.02(vi), 9.03, 9.04, 9.05 and 9.07 through 9.10, inclusive, at the end of such
fiscal quarter or year, as the case may be, (B) whether the provisions of
Section 8.14 are applicable and (C) commencing with the financial statements
delivered for the Borrower's fiscal quarter ending on September 30, 1999, the
Applicable Margin for the Margin Reduction Period commencing


                                     -54-
<PAGE>   56

with the delivery of such financial statements, and (II) if delivered with the
financial statements required by Section 8.01(c), set forth in reasonable
detail the amount of (and the calculations required to establish the amount of)
Excess Cash Flow for the respective Excess Cash Payment Period.

          (g) Notice of Default or Litigation; etc. Promptly, and in any event
within five Business Days' after any Senior Officer of any Credit Party obtains
knowledge thereof, notice of (i) the occurrence of any event which constitutes
a Default or an Event of Default, (ii) the commencement of, or threat of, or
any development in, the revocation, material adverse modification, non-renewal
or suspension of, or the filing of any petitions to deny or similar pleadings
against any renewal or other application filed on behalf of the Borrower, a
License Subsidiary, or with respect to any of the FCC Licenses material to the
Borrower or any of its Subsidiaries, (iii) the issuance of, or the threat of,
any cease and desist order or the imposition of any material fines, forfeitures
or other administrative actions by the FCC or any other governmental entity
with respect to the Borrower or any of its Subsidiaries and (iv) any litigation
or governmental investigation or proceeding pending (x) against the Borrower or
any of its Subsidiaries which could reasonably be expected to materially and
adversely affect the business, operations, property, assets, liabilities,
condition (financial or otherwise) or prospects of the Borrower or of the
Borrower and its Subsidiaries taken as a whole, (y) with respect to any
material Indebtedness of the Borrower or any of its Subsidiaries or (z) with
respect to any Credit Document. In addition, the Borrower agrees to provide the
Administrative Agent with copies of all material communications with the FCC
concerning the FCC Licenses.

          (h) Other Reports and Filings. Promptly after the filing or delivery
thereof, copies of (i) all financial information, proxy materials and reports,
if any, which the Borrower or any of its Subsidiaries shall publicly file with
the Securities and Exchange Commission or any successor thereto (the "SEC") or
deliver to holders (or any trustee, agent or other representative therefor) of
its material Indebtedness pursuant to the terms of the documentation governing
such Indebtedness and (ii) any non-routine reports, applications, petitions, or
other communications filed with or received from the FCC with respect to the
Borrower or the License Subsidiaries, including, without limitation, the FCC
notification on or prior to September 29, 1999 (or such other date as may be
provided by the FCC) that the five-year build out requirements have been met
for the PageMart II, Inc. nationwide narrowband personal communication systems
license (call sign KNKV210) and the FCC notification on or prior to January 27,
2000 (or such other date as may be provided by the FCC) that the five-year
build out requirements have been met for the PageMart PCS, Inc. regional
narrowband personal communication systems licenses (call signs KNKV212,
KNKV218, KNKV224, KNKV230, and KNKV236).

          (i) Environmental Matters. Promptly after any officer of any Credit
Party obtains knowledge thereof, notice of one or more of the following
environmental matters, unless such environmental matters could not,
individually or when aggregated with all other such environmental matters, be
reasonably expected to materially and adversely affect the business,
operations, property, assets, liabilities, condition (financial or otherwise)
or prospects of the Borrower or of the Borrower and its Subsidiaries taken as a
whole:


                                     -55-
<PAGE>   57

          (i) any pending or threatened Environmental Claim against the
     Borrower or any of its Subsidiaries or any Real Property owned, leased or
     operated by the Borrower or any of its Subsidiaries;

          (ii) any condition or occurrence on or arising from any Real Property
     owned, leased or operated by the Borrower or any of its Subsidiaries that
     (a) results in noncompliance by the Borrower or any of its Subsidiaries
     with any applicable Environmental Law or (b) could be expected to form the
     basis of an Environmental Claim against the Borrower or any of its
     Subsidiaries or any such Real Property;

          (iii) any condition or occurrence on any Real Property owned, leased
     or operated by the Borrower or any of its Subsidiaries that could be
     expected to cause such Real Property to be subject to any restrictions on
     the ownership, lease, occupancy, use or transferability by the Borrower or
     any of its Subsidiaries of such Real Property under any Environmental Law;
     and

          (iv) the taking of any removal or remedial action in response to the
     actual or alleged presence of any Hazardous Material on any Real Property
     owned, leased or operated by the Borrower or any of its Subsidiaries as
     required by any Environmental Law or any governmental or other
     administrative agency; provided that in any event the Borrower shall
     deliver to each Lender all notices received by the Borrower or any of its
     Subsidiaries from any government or governmental agency under, or pursuant
     to, CERCLA which identify the Borrower or any of its Subsidiaries as
     potentially responsible parties for remediation costs or which otherwise
     notify the Borrower or any of its Subsidiaries of potential liability
     under CERCLA.

All such notices shall describe in reasonable detail the nature of the claim,
investigation, condition, occurrence or removal or remedial action and the
Borrower or such Subsidiary's response thereto.

          (j) Other Information. From time to time, such other information or
documents (financial or otherwise) with respect to the Borrower or any of its
Subsidiaries as any Agent or any Lender (through the Administrative Agent) may
reasonably request.

          8.02 Books, Records and Inspections; Annual Meetings. (a) The
Borrower will, and will cause each of its Subsidiaries to, keep proper books of
record and accounts in which full, true and correct entries in conformity with
generally accepted accounting principles and all requirements of law shall be
made of all dealings and transactions in relation to its business and
activities. The Borrower will, and will cause each of its Subsidiaries to,
permit officers and designated representatives of any Agent (at the expense of
the Agent or, if any Default or Event of Default then exists, at the expense of
the Borrower) or any Lender (at the expense of such Lender) to visit and
inspect, under guidance of officers of the Borrower or such Subsidiary, any of
the properties of the Borrower or such Subsidiary, and to examine the books of
account of the Borrower or such Subsidiary and discuss the affairs, finances
and accounts of the Borrower or such Subsidiary with, and be advised as to the
same by, its and their officers and independent


                                     -56-
<PAGE>   58

accountants, all upon reasonable prior notice and at such reasonable times and
intervals and to such reasonable extent as such Agent or such Lender may
reasonably request.

          (b) At a date to be mutually agreed upon between the Agents and the
Borrower occurring on or prior to the 120th day after the close of each fiscal
year of the Borrower, the Borrower shall, at the request of the Agents, hold a
meeting to which all of the Lenders shall be invited to attend at each
respective Lender's expense, at which meeting shall be reviewed the financial
results of the Borrower and its Subsidiaries for the previous fiscal year and
the budgets presented for the current fiscal year of the Borrower.

          8.03 Maintenance of Property; Insurance. (a) The Borrower will, and
will cause each of its Subsidiaries to, (i) keep all property necessary to the
business of the Borrower and its Subsidiaries in reasonably good working order
and condition, ordinary wear and tear excepted, (ii) maintain with financially
sound and reputable insurance companies insurance on all such property in at
least such amounts and against at least such risks as is consistent and in
accordance with industry practice for companies similarly situated owning
similar properties in the same general areas in which the Borrower or any of
its Subsidiaries operates, and (iii) furnish to the Administrative Agent,
together with each set of financial statements delivered pursuant to Section
8.01(c), full information as to the insurance carried. At any time that
insurance at or above the levels described on Schedule IX is not being
maintained by the Borrower or any Subsidiary of the Borrower, the Borrower
will, or will cause one of its Subsidiaries to, promptly notify the
Administrative Agent in writing and, if thereafter reasonably requested by any
Agent or the Required Lenders to do so, the Borrower or any such Subsidiary, as
the case may be, shall obtain such insurance at such levels and coverage which
are at least as great as those described in Schedule IX to the extent such
insurance is reasonably available at a reasonable expense.

          (b) The Borrower will, and will cause each of its Subsidiaries to, at
all times keep its property insured in favor of the Collateral Agent, and all
policies or certificates (or certified copies thereof) with respect to such
insurance (i) shall name the Collateral Agent as loss payee and/or additional
insured, (ii) shall state that such insurance policies shall not be canceled
without at least 30 days' prior written notice thereof by the respective
insurer to the Collateral Agent (or at least 10 days in the case of nonpayment
of premium), (iii) shall provide that the respective insurers irrevocably waive
any and all rights of subrogation with respect to the Collateral Agent and the
Secured Creditors and (iv) shall contain the standard non-contributing mortgage
clause endorsement in favor of the Collateral Agent with respect to hazard
liability insurance, (v) shall, except in the case of public liability
insurance, provide that any losses shall be payable notwithstanding (A) any act
or neglect of the Borrower or any of its Subsidiaries, (B) the occupation or
use of the properties for purposes more hazardous than those permitted by the
terms of the respective policy if such coverage is obtainable at commercially
reasonable rates and is of the kind from time to time customarily insured
against by Persons owning or using similar property and in such amounts as are
customary, (C) any foreclosure or other proceeding relating to the insured
properties or (D) any change in the title to or ownership or possession of the
insured properties.

          (c) If the Borrower or any of its Subsidiaries shall fail to insure
its property in accordance with this Section 8.03, or if the Borrower or any of
its Subsidiaries shall fail to so


                                     -57-
<PAGE>   59

endorse and deposit all policies or certificates with respect thereto, the
Collateral Agent shall have the right (but shall be under no obligation) to
procure such insurance and the Borrower agrees to reimburse the Collateral
Agent for all reasonable costs and expenses of procuring such insurance.

          8.04 Corporate Franchises. The Borrower will, and will cause each of
its Subsidiaries to, do or cause to be done, all things necessary to preserve
and keep in full force and effect its existence and its material rights,
franchises, licenses and patents; provided, however, that nothing in this
Section 8.04 shall prevent (i) sales of assets and other transactions by the
Borrower or any of its Subsidiaries in accordance with Section 9.02 or (ii) the
withdrawal by the Borrower or any of its Subsidiaries of its qualification as a
foreign corporation in any jurisdiction where such withdrawal could not, either
individually or in the aggregate, reasonably be expected to have a material
adverse effect on the business, operations, property, assets, liabilities,
condition (financial or otherwise) or prospects of the Borrower or of the
Borrower and its Subsidiaries taken as a whole.

          8.05 Compliance with Statutes, etc. The Borrower will, and will cause
each of its Subsidiaries to, comply with all applicable statutes, regulations
and orders of, and all applicable restrictions imposed by, all governmental
bodies, domestic or foreign, in respect of the conduct of its business and the
ownership of its property and the retention of its FCC Licenses (including
applicable statutes, regulations, orders and restrictions relating to
environmental standards and controls), except such noncompliances as could not,
either individually or in the aggregate, reasonably be expected to have a
material adverse effect on the business, operations, property, assets,
liabilities, condition (financial or otherwise) or prospects of the Borrower or
of the Borrower and its Subsidiaries taken as a whole.

          8.06 Compliance with Environmental Laws. The Borrower will comply,
and will cause each of its Subsidiaries to comply, in all material respects
with all Environmental Laws and permits applicable to, or required by, the
ownership, lease or use of its Real Property now or hereafter owned, leased or
operated by the Borrower or any of its Subsidiaries, will promptly pay or cause
to be paid all costs and expenses incurred in connection with such compliance,
and will keep or cause to be kept all such Real Property free and clear of any
Liens imposed pursuant to such Environmental Laws. Neither the Borrower nor any
of its Subsidiaries will generate, use, treat, store, Release or dispose of, or
permit the generation, use, treatment, storage, Release or disposal of
Hazardous Materials on any Real Property now or hereafter owned, leased or
operated by the Borrower or any of its Subsidiaries, or transport or permit the
transportation of Hazardous Materials to or from any such Real Property, except
for Hazardous Materials generated, used, treated, stored, Released or disposed
of at any such Real Properties in compliance in all material respects with all
applicable Environmental Laws and as required in connection with the normal
operation, use and maintenance of the business or operations of the Borrower or
any of its Subsidiaries.

          8.07 ERISA As soon as possible and, in any event, within ten (10)
days after the Borrower, any Subsidiary of the Borrower or any ERISA Affiliate
knows or has reason to know of the occurrence of any of the following, the
Borrower will deliver to the Administrative Agent a certificate of the chief
financial officer of the Borrower setting forth the full details as to such
occurrence and the action, if any, that the Borrower, such Subsidiary or such
ERISA Affiliate is


                                     -58-
<PAGE>   60

required or proposes to take, together with any notices required or proposed to
be given to or filed with or by the Borrower, the Subsidiary, the ERISA
Affiliate, the PBGC or any other governmental agency, a Plan participant or the
Plan administrator with respect thereto: that a Reportable Event has occurred
(except to the extent that the Borrower has previously delivered to the Lenders
a certificate and notices (if any) concerning such event pursuant to the next
clause hereof); that a contributing sponsor (as defined in Section 4001(a)(13)
of ERISA) of a Plan subject to Title IV of ERISA is subject to the advance
reporting requirement of PBGC Regulation Section 4043.61 (without regard to
subparagraph (b)(1) thereof), and an event described in subsection .62, .63,
 .64, .65, .66, .67 or .68 of PBGC Regulation Section 4043 is reasonably
expected to occur with respect to such Plan within the following 30 days; that
an accumulated funding deficiency, within the meaning of Section 412 of the
Code or Section 302 of ERISA, has been incurred or an application may be or has
been made for a waiver or modification of the minimum funding standard
(including any required installment payments) or an extension of any
amortization period under Section 412 of the Code or Section 303 or 304 of
ERISA with respect to a Plan; that any contribution required to be made with
respect to a Plan or Foreign Pension Plan has not been timely made except to
the extent that any failure to do so would not result in a material liability
to the Borrower, any of its Subsidiaries or any ERISA Affiliates; that a Plan
has been or may be terminated, reorganized, partitioned or declared insolvent
under Title IV of ERISA; that a Plan has an Unfunded Current Liability; that
proceedings may be or have been instituted to terminate or appoint a trustee to
administer a Plan which is subject to Title IV of ERISA; that a proceeding has
been instituted by the PBGC pursuant to Section 515 of ERISA to collect a
delinquent contribution to a Plan; that the Borrower, any Subsidiary of the
Borrower or any ERISA Affiliate may reasonably be expected to incur any
material liability (including any indirect, contingent, or secondary liability)
to or on account of the termination of or withdrawal from a Plan under Section
4062, 4063, 4064, 4069, 4201, 4204 or 4212 of ERISA or with respect to a Plan
under Section 401(a)(29), 4971, 4975 or 4980 of the Code or Section 409 or
502(i) or 502(l) of ERISA or with respect to a group health plan (as defined in
Section 607(1) of ERISA or Section 4980B(g)(2) of the Code) under Section 4980B
of the Code; or that the Borrower or any Subsidiary of the Borrower may
reasonably be expected to incur any material liability pursuant to any employee
welfare benefit plan (as defined in Section 3(1) of ERISA) that provides
benefits to retired employees or other former employees (other than as required
by Section 601 of ERISA) or any Plan or any Foreign Pension Plan. The Borrower
will deliver to the Administrative Agent copies of any records, documents or
other information that must be furnished to the PBGC with respect to any Plan
pursuant to Section 4010 of ERISA. The Borrower will also deliver to the
Administrative Agent a complete copy of the annual report (on Internal Revenue
Service Form 5500-series) of each Plan (including, to the extent required, the
related financial and actuarial statements and opinions and other supporting
statements, certifications, schedules and information) required to be filed
with the Internal Revenue Service. In addition to any certificates or notices
delivered to the Administrative Agent pursuant to the first sentence hereof,
copies of annual reports and any records, documents or other information
required to be furnished to the PBGC or any other governmental agency, and any
material notices received by the Borrower, any Subsidiary of the Borrower or
any ERISA Affiliate with respect to any Plan or Foreign Pension Plan shall be
delivered to the Administrative Agent no later than ten (10) days after such
notice has been received by the Borrower, the respective Subsidiary or the
ERISA Affiliate. The Borrower and each of its applicable Subsidiaries shall
insure that all Foreign 


                                     -59-
<PAGE>   61

Pension Plans administered by it or into which it makes payments obtains or
retains (as applicable) registered status under and as required by applicable
law and is administered in a timely manner in all respects in compliance with
all applicable laws except where the failure to do any of the foregoing would
not be reasonably likely to result in a material adverse effect on the
business, operations, property, assets, liabilities, condition (financial or
otherwise) or prospects of the Borrower or of the Borrower and its Subsidiaries
taken as a whole.

          8.08 End of Fiscal Years; Fiscal Quarters. The Borrower will cause
(i) each of its, and each of its Subsidiaries', fiscal years to end on December
31 of each year and (ii) each of its, and each of its Subsidiaries', fiscal
quarters to end on March 31, June 30, September 30 and December 31.

          8.09 Performance of Obligations. The Borrower will, and will cause
each of its Subsidiaries to, perform all of its obligations under the terms of
each mortgage, indenture, security agreement, loan agreement or credit
agreement and each other material agreement, contract or instrument by which it
is bound, except such non-performances as could not, either individually or in
the aggregate, reasonably be expected to have a material adverse effect on the
business, operations, property, assets, liabilities, condition (financial or
otherwise) or prospects of the Borrower or of the Borrower and its Subsidiaries
taken as a whole.

          8.10 Payment of Taxes. The Borrower will pay and discharge, and will
cause each of its Subsidiaries to pay and discharge, all taxes, assessments and
governmental charges or levies imposed upon it or upon its income or profits,
or upon any properties belonging to it, prior to the date on which penalties
attach thereto, and all lawful claims for sums that have become due and payable
which, if unpaid, might become a Lien not otherwise permitted under Section
9.01(i); provided that neither the Borrower nor any of its Subsidiaries shall
be required to pay any such tax, assessment, charge, levy or claim which is
being contested in good faith and by proper proceedings if it has maintained
adequate reserves with respect thereto in accordance with generally accepted
accounting principles.

          8.11 Additional Security; Further Assurances. (a) The Borrower will,
and will cause each Subsidiary Guarantor, if any, to grant to the Collateral
Agent security interests and mortgages in such assets and properties of the
Borrower and the Subsidiary Guarantors as are not covered by the original
Security Documents, and as may be reasonably requested from time to time by any
Agent or the Required Lenders (collectively, the "Additional Security
Documents") , provided that neither the Borrower nor any of its Subsidiaries
shall be required to grant a security interest in any of its assets to the
extent same would not be permitted under any law applicable to the Borrower or
such Subsidiary, as such determination is reasonably agreed to by the
Administrative Agent. All such security interests and mortgages shall be
granted pursuant to documentation reasonably satisfactory in form and substance
to the Agents and shall constitute valid and enforceable perfected security
interests and mortgages superior to and prior to the rights of all third
Persons and subject to no other Liens except for Permitted Liens. The
Additional Security Documents or instruments related thereto shall have been
duly recorded or filed in such manner and in such places as are required by law
to establish, perfect, preserve and protect the Liens in favor of the
Collateral Agent required to be granted pursuant to the Additional Security

                                     -60-
<PAGE>   62

Documents and all taxes, fees and other charges payable in connection therewith
shall have been paid in full.

          (b) The Borrower will, and will cause each of its Subsidiaries to, at
the expense of the Borrower or such respective Subsidiary, make, execute,
endorse, acknowledge, file and/or deliver to the Collateral Agent from time to
time such vouchers, invoices, schedules, confirmatory assignments, conveyances,
financing statements, transfer endorsements, powers of attorney, certificates,
real property surveys, reports and other assurances or instruments and take
such further steps relating to the Collateral covered by any of the Security
Documents as the Collateral Agent may reasonably require. In addition, the
Borrower shall, upon the reasonable request of the Collateral Agent to assure
itself that Section 5.10(i) has been complied with, provide the Collateral
Agent with information as to Real Property consisting of the Borrower's or any
of its Subsidiaries' transmitter sites. Furthermore, the Borrower will use its
reasonable best efforts to cause to be delivered to the Collateral Agent such
opinions of counsel, title insurance and other related documents as may be
reasonably requested by any Agent to assure itself that this Section 8.11 has
been complied with.

          (c) If any Agent or the Required Lenders are advised in writing by
counsel that they are required by law or regulation to have appraisals prepared
in respect of the Real Property of the Borrower and its Subsidiaries
constituting Collateral, the Borrower will, at its own expense, provide to the
Administrative Agent appraisals which satisfy the applicable requirements of
the Real Estate Appraisal Reform Amendments of the Financial Institution
Reform, Recovery and Enforcement Act of 1989, as amended, and which shall
otherwise be in form and substance reasonably satisfactory to the Agents.

          (d) To the extent not delivered by the Borrower to the Administrative
Agent on the Effective Date pursuant to Section 5.10(ii), within 90 days
following the Effective Date, the Borrower shall have delivered to the
Administrative Agent certified copies of Requests for Information or Copies
(Form UCC-11), or equivalent reports listing all effective financing statements
that name the Borrower or any of its Subsidiaries as debtor and that are filed
in the jurisdictions referred to in Section 5.10(ii), together with copies of
such other financing statements that name the Borrower or any of its
Subsidiaries as debtor, none of which shall cover any of the Collateral except
to the extent evidencing Permitted Liens, provided, to the extent that any such
financing statements evidence Liens not permitted under Section 9.01, the
Borrower will, and will cause each of its Subsidiaries to, promptly terminate
any such financing statements and the underlying Liens or security interests
related thereto.

          (e) On or prior to the 30th day following the Initial Borrowing Date,
the Collateral Agent shall have received landlord waivers with respect of the
Leaseholds of the Borrower and its Subsidiaries as designated on Schedule III,
which landlord waivers shall be in form and substance reasonably satisfactory
to the Agents.

          (f) The Borrower agrees that each action required above by clauses
(a) through (d), inclusive, of this Section 8.11 shall be completed as soon as
possible, but in no event later than 90 days after such action is either
requested to be taken by the respective Agent or the Required Lenders or
required to be taken by the Borrower and/or its Subsidiaries pursuant to the


                                     -61-
<PAGE>   63

terms of this Section 8.11; provided that, except in respect of the consents
required by preceding clause (e), in no event will the Borrower or any of its
Subsidiaries be required to (i) take any action, other than using commercially
reasonable efforts, to obtain consents from third parties with respect to its
compliance with this Section 8.11 or (ii) pay any consideration (other than de
minimus amounts), incur any material obligation or relinquish any material
right in connection with obtaining any such consent from third parties.

          8.12 Information Systems and Equipment. The Borrower will, and will
cause each of its Subsidiaries to, (i) ensure that its Information Systems and
Equipment are at all times after September 30, 1999 Year 2000 Compliant, except
insofar as the failure to do so could not reasonably be expected to have a
material adverse effect on the business, operations, property, assets,
liabilities, condition (financial or otherwise) or prospects of the Borrower or
of the Borrower and its Subsidiaries taken as a whole, and (ii) notify the
Administrative Agent and each Lender promptly upon detecting any material
failure of its Information Systems and Equipment to be Year 2000 Compliant. In
addition, the Borrower shall, and shall cause each its Subsidiaries to, provide
any Agent and any Lender with such information about the Borrower's or such
Subsidiaries' year 2000 computer readiness (including, without limitation,
information as to contingency plans, budgets and testing results) as any Agent
or any Lender shall reasonably request.

          8.13 Actions with Respect to Non-Guarantor Subsidiaries. If at any
time any Domestic Subsidiary of the Borrower which was theretofore a
Non-Guarantor Subsidiary ceases to qualify as such in accordance with the
definition thereof, such Non-Guarantor Subsidiary shall on such date be
required to execute and deliver counterparts of the Subsidiaries Guaranty, the
Pledge Agreement and the Security Agreement, and take all action in connection
therewith as would otherwise have been required to be taken pursuant to Section
5 if such Subsidiary had been a Credit Party on the Initial Borrowing Date.
Furthermore, if the aggregate assets of all Non-Guarantor Subsidiaries
(excluding for this purpose (i) any assets constituting Investments of such
Non-Guarantor Subsidiaries in a Foreign Person to the extent such Investments
were made prior to the Effective Date or are permitted under Section 9.05(xi)
or (xiii), (ii) Foreign Subsidiaries and (iii) the License Subsidiaries) and/or
the portion of Consolidated EBITDA attributable to all such Non-Guarantor
Subsidiaries (including for this purpose the License Subsidiaries but excluding
(i) Foreign Subsidiaries and (ii) the Consolidated EBITDA attributable to any
Foreign Person unless such Consolidated EBITDA is distributed or paid to the
Borrower or one of its Domestic Subsidiaries) for the Test Period of the
Borrower then most recently ended exceed the respective thresholds provided for
in the definition of Non-Guarantor Subsidiaries contained herein, then one or
more such Domestic Subsidiaries (other than the License Subsidiaries) which
theretofore constituted Non-Guarantor Subsidiaries (if any such Domestic
Subsidiaries are then in existence) shall cease to constitute same (as
designated by the Borrower or the Administrative Agent in accordance with the
definition of Non-Guarantor Subsidiaries contained herein) and each such
Domestic Subsidiary, as well as any other Domestic Subsidiary of the Borrower
which the Borrower at any time notifies the Administrative Agent in writing
shall no longer constitute a Non-Guarantor Subsidiary, shall take all actions
specified in the immediately preceding sentence.

          8.14 Section 310(b)(4) of the Communications Act, 47 U.S.C. ss.
310(b)(4); Certain Actions Related thereto, etc. The Borrower will adopt and
maintain procedures for the


                                     -62-
<PAGE>   64

monitoring of the level of ownership and control of its issued and outstanding
capital stock by Non-U.S. Persons sufficient under applicable rules and
policies of the FCC to demonstrate compliance with applicable restrictions on
foreign ownership and control pursuant to Section 310(b)(4) of the
Communications Act, 47 U.S.C. ss.310(b)(4). In addition, within ten Business
Days thereof, the Borrower shall provide the Administrative Agent with written
notice of any knowledge of the Borrower of facts or circumstances indicating
that ownership or control of the Borrower's issued and outstanding capital
stock by Non-U.S. Persons may increase so as to exceed the 25% limit set forth
in such Section 310(b)(4). At any time that the Borrower has reason to
anticipate that the foreign ownership or control of its issued and outstanding
capital stock may increase so as to exceed such 25% limit, the Borrower shall
promptly file with the FCC a petition for declaratory order (or other form of
petition of application as may be provided under FCC rules then in effect),
complete in all material respects, requesting a determination that foreign
ownership or control of the Borrower in excess of limit set forth in such
Section 310(b)(4) is not contrary to the public interest.

          SECTION 9. Negative Covenants. The Borrower hereby covenants and
agrees that on and after the Effective Date and until the Total Commitment and
all Letters of Credit created thereunder have terminated and the Loans, Notes
and Unpaid Drawings (in each case, together with interest thereon), Fees and
all other Obligations (other than any indemnities described in Section 13.13
which are not then due and payable) incurred hereunder and thereunder, are paid
in full:

          9.01 Liens. The Borrower will not, and will not permit any of its
Subsidiaries to, create, incur, assume or suffer to exist any Lien upon or with
respect to any property or assets (real or personal, tangible or intangible) of
the Borrower or any of its Subsidiaries, whether now owned or hereafter
acquired, or sell any such property or assets subject to an understanding or
agreement, contingent or otherwise, to repurchase such property or assets
(including sales of accounts receivable with recourse to the Borrower or any of
its Subsidiaries), or assign any right to receive income or permit the filing
of any effective financing statement or consent to the filing of any financing
statement under the UCC or any other similar notice of Lien under any similar
recording or notice statute; provided that the provisions of this Section 9.01
shall not prevent the creation, incurrence, assumption or existence of the
following (Liens described below are herein referred to as "Permitted Liens"):

          (i) inchoate Liens for taxes, assessments or governmental charges or
     levies not yet due or Liens for taxes, assessments or governmental charges
     or levies being contested in good faith and by appropriate proceedings for
     which adequate reserves have been established in accordance with generally
     accepted accounting principles;

          (ii) Liens in respect of property or assets of the Borrower or any of
     its Subsidiaries imposed by law, which were incurred in the ordinary
     course of business and do not secure Indebtedness for borrowed money, such
     as carriers', warehousemen's, materialmen's and mechanics' liens and other
     similar Liens arising in the ordinary course of business, and (x) which do
     not in the aggregate materially detract from the value of the Borrower's
     or such Subsidiary's property or assets or materially impair the use
     thereof in the operation of the business of the Borrower or such
     Subsidiary or (y) which are being 


                                     -63-
<PAGE>   65

     contested in good faith by appropriate proceedings, which proceedings have
     the effect of preventing the forfeiture or sale of the property or assets
     subject to any such Lien;

          (iii) Liens in existence on the Initial Borrowing Date which are
     listed, and the property subject thereto described, in Schedule XI, but
     only to the respective date, if any, set forth in such Schedule XI for the
     removal, replacement and termination of any such Liens, plus renewals,
     replacements and extensions of such Liens to the extent set forth on
     Schedule XI, provided that (x) the aggregate principal amount of the
     Indebtedness, if any, secured by such Liens does not increase from that
     amount outstanding at the time of any such renewal, replacement or
     extension and (y) any such renewal, replacement or extension does not
     encumber any additional assets or properties of the Borrower or any of its
     Subsidiaries;

          (iv) Liens created pursuant to the Security Documents;

          (v) leases or subleases granted to other Persons not materially
     interfering with the conduct of the business of the Borrower or any of its
     Subsidiaries;

          (vi) Liens upon assets of the Borrower or any of its Subsidiaries
     subject to Capitalized Lease Obligations to the extent such Capitalized
     Lease Obligations are permitted by Section 9.04(iv), provided that (x)
     such Liens only serve to secure the payment of Indebtedness arising under
     such Capitalized Lease Obligation and (y) the Lien encumbering the asset
     giving rise to the Capitalized Lease Obligation does not encumber any
     other asset of the Borrower or any Subsidiary of the Borrower;

          (vii) Liens upon assets of the Borrower or any of its Subsidiaries
     pursuant to the Vendor Financing Agreement, provided that (x) such Liens
     only secure the payment of Indebtedness incurred pursuant to the Vendor
     Financing Agreement and (y) such Liens only encumber the "Collateral"
     under, and as defined in, the Vendor Financing Agreement and shall not
     encumber any other asset of the Borrower or any Subsidiary of the
     Borrower;

          (viii) Liens placed upon equipment or machinery acquired after the
     Initial Borrowing Date and used in the ordinary course of business of the
     Borrower or any of its Subsidiaries at the time of the acquisition thereof
     by the Borrower or any such Subsidiary or within 90 days thereafter to
     secure Indebtedness incurred to pay all or a portion of the purchase price
     thereof or to secure Indebtedness incurred solely for the purpose of
     financing the acquisition of any such equipment or machinery or
     extensions, renewals or replacements of any of the foregoing for the same
     or a lesser amount, provided that (x) the aggregate outstanding principal
     amount of all Indebtedness secured by Liens permitted by this clause
     (viii) shall not at any time exceed that amount permitted under Section
     9.04(iv) and (y) in all events, the Lien encumbering the equipment or
     machinery so acquired does not encumber any other asset of the Borrower or
     such Subsidiary;

          (ix) easements, rights-of-way, restrictions, encroachments and other
     similar charges or encumbrances, and minor title deficiencies, in each
     case not securing 


                                     -64-
<PAGE>   66

     Indebtedness and not materially interfering with the conduct of the
     business of the Borrower or any of its Subsidiaries;

          (x) Liens arising from precautionary UCC financing statement filings
     regarding operating leases;

          (xi) Liens arising out of the existence of judgments or awards in
     respect of which the Borrower or any of its Subsidiaries shall in good
     faith be prosecuting an appeal or proceedings for review and in respect of
     which there shall have been secured a subsisting stay of execution pending
     such appeal or proceedings, provided that the aggregate amount of any cash
     and the fair market value of any property subject to such Liens does not
     exceed $10,000,000 at any time outstanding;

          (xii) statutory and common law landlords' liens under leases to which
     the Borrower or any of its Subsidiaries is a party;

          (xiii) Liens (other than Liens created under relevant Federal, State,
     foreign or local statutes to the extent, and only to the extent, that
     neither the Borrower nor any of its Subsidiaries has delivered any
     collateral subject to such Lien to the holder of such Lien or to any other
     third Person for the purpose of perfecting such Lien, or taken any other
     action to perfect, or consent to the perfection of, any such Lien)
     incurred in the ordinary course of business in connection with workers
     compensation claims, unemployment insurance and social security benefits
     and Liens securing the performance of bids, tenders, leases and contracts
     in the ordinary course of business, statutory obligations, surety bonds,
     performance bonds and other obligations of a like nature incurred in the
     ordinary course of business (exclusive of obligations in respect of the
     payment for borrowed money), provided that the aggregate outstanding
     amount of obligations secured by Liens permitted by this clause (xiii)
     (and the value of all cash and property encumbered by Liens permitted
     pursuant to this clause (xiii)) shall not at any time exceed $10,000,000;
     and

          (xiv) additional Liens incurred by the Borrower and its Subsidiaries
     so long as the value of the properties subject to such Liens, and the
     Indebtedness and other obligations secured thereby, do not at any time
     exceed $5,000,000.

In connection with the granting of Liens of the type described in clauses (vi),
(vii) and (viii) of this Section 9.01 by the Borrower or any of its
Subsidiaries, the Administrative Agent and the Collateral Agent shall be
authorized to take any actions deemed appropriate by it in connection therewith
(including, without limitation, by executing appropriate lien releases or lien
subordination agreements in favor of the holder or holders of such Liens, in
either case solely with respect to the item or items of equipment or other
assets subject to such Liens).

          9.02 Consolidation, Merger, Purchase or Sale of Assets, etc. The
Borrower will not, and will not permit any of its Subsidiaries to, wind up,
liquidate or dissolve its affairs or enter into any transaction of merger or
consolidation, or convey, sell, lease or otherwise dispose of all or any part
of its property or assets, or enter into any sale-leaseback transactions, or
purchase or otherwise acquire (in one or a series of related transactions) any
part of the property or assets


                                     -65-
<PAGE>   67

(other than purchases or other acquisitions of inventory, materials and
equipment in the ordinary course of business) of any Person (or agree to do any
of the foregoing at any future time), except that:

          (i) Capital Expenditures by the Borrower and its Subsidiaries shall
     be permitted to the extent not in violation of Section 9.07;

          (ii) each of the Borrower and its Subsidiaries may sell assets (other
     than the capital stock of any Subsidiary Guarantor), so long as (v) no
     Default or Event of Default then exists or would result therefrom, (w)
     each such sale is in an arm's-length transaction and the Borrower or the
     respective Subsidiary receives at least fair market value (as determined
     in good faith by the Borrower or such Subsidiary, as the case may be), (x)
     at least 50% of total consideration received by the Borrower or such
     Subsidiary is cash and is paid at the time of the closing of such sale and
     any other consideration received by the Borrower in connection with such
     sale is Qualified Proceeds, (y) the Net Sale Proceeds therefrom are
     applied and/or reinvested as (and to the extent) required by Section
     4.02(e) and (z) the aggregate amount of the proceeds received from all
     assets sold pursuant to this clause (ii) shall not exceed $5,000,000 in
     any fiscal year of the Borrower;

          (iii) Investments may be made to the extent permitted by Section
     9.05;

          (iv) each of the Borrower and its Subsidiaries may lease (as lessee)
     real or personal property (so long as any such lease does not create a
     Capitalized Lease Obligation except to the extent permitted by Section
     9.04(iv));

          (v) each of the Borrower and its Subsidiaries may make sales, leases
     or other dispositions of inventory (including wireless messaging devices,
     regardless of whether the Borrower or such Subsidiary accounts for same as
     inventory or otherwise) in the ordinary course of business;

          (vi) each of the Borrower and its Subsidiaries may sell obsolete,
     uneconomic or worn-out equipment or materials in the ordinary course of
     business, provided that the aggregate amount of the proceeds received from
     all assets sold pursuant to this clause (vi) shall not exceed $10,000,000
     in any fiscal year of the Borrower;

          (vii) each of the Borrower and its Subsidiaries may sell or discount,
     in each case without recourse and in the ordinary course of business,
     accounts receivable arising in the ordinary course of business, but only
     in connection with the compromise or collection thereof and not as part of
     any financing transaction;

          (viii) each of the Borrower and its Subsidiaries may grant leases or
     subleases to other Persons not materially interfering with the conduct of
     the business of the Borrower or any of its Subsidiaries;

          (ix) the GTE Transaction shall be permitted; and


                                     -66-
<PAGE>   68

          (x) (a) any Wholly-Owned Subsidiary Guarantor of the Borrower (other
     than a License Subsidiary) may merge into the Borrower (so long as the
     Borrower is the surviving corporation thereof) or with or into any other
     Wholly-Owned Subsidiary Guarantor (other than a License Subsidiary) and
     (b) the Borrower and one or more Wholly-Owned Subsidiary Guarantors (other
     than a License Subsidiary) may sell or transfer assets to each other, in
     each case so long as the action or actions taken pursuant to this clause
     (ix) does not, or do not, adversely affect the Lenders or the security
     interests in assets or guarantees given in respect of the Obligations
     hereunder.

To the extent the Required Lenders waive the provisions of this Section 9.02
with respect to the sale of any Collateral, or any Collateral is sold as
permitted by this Section 9.02 (other than to the Borrower or a Subsidiary
thereof), such Collateral shall be sold free and clear of the Liens created by
the Security Documents, and the Administrative Agent and the Collateral Agent
shall be authorized to take any actions deemed appropriate in order to effect
the foregoing.

          9.03 Dividends. The Borrower will not, and will not permit any of its
Subsidiaries to, authorize, declare or pay any Dividends with respect to the
Borrower or any of its Subsidiaries, except that:

          (i) any Subsidiary of the Borrower may pay cash Dividends to the
     Borrower or to any Wholly-Owned Subsidiary of the Borrower;

          (ii) so long as no Default or Event of Default then exists (both
     before and after giving effect to the payment thereof), any
     non-Wholly-Owned Subsidiary of the Borrower may pay cash Dividends to its
     shareholders or partners generally so long as the Borrower or its
     respective Subsidiary which owns the equity interest or interests in the
     Subsidiary paying such Dividends receives at least its proportionate share
     thereof (based upon its relative holdings of equity interests in the
     Subsidiary paying such Dividends and taking into account and the relative
     preferences, if any, of the various classes of equity interests in such
     Subsidiary);

          (iii) so long as there shall exist no Default or Event of Default
     (both before and after giving effect to the payment thereof), the Borrower
     may repurchase outstanding shares of its common stock (or options to
     purchase such common stock) following the death, disability or termination
     of employment of officers, directors or employees of the Borrower or any
     of its Subsidiaries, provided that the aggregate amount of Dividends paid
     by the Borrower pursuant to this clause (ii) shall not exceed in any
     fiscal year of the Borrower the sum of (x) $2,000,000 and (y) the
     aggregate amount of net cash proceeds received by the Borrower during such
     fiscal year from the exercise of any options to purchase shares of its
     common stock held by any of its officers, directors or employees;

          (iv) the Borrower may pay regularly scheduled Dividends on Qualified
     Preferred Stock pursuant to the terms thereof solely through the issuance
     of additional shares of such Qualified Preferred Stock and not in cash;
     and


                                     -67-
<PAGE>   69

          (v) for the sole purpose of avoiding or remedying a violation of
     Section 301(b)(4) of the Communications Act, 47 U.S. ss.310(b)(4)
     resulting from excessive ownership or control of the Borrower's capital
     stock by Non-U.S. Persons, the Borrower may redeem or repurchase for cash
     any issued and outstanding shares of the Borrower's or any Subsidiary's
     capital stock to the extent necessary to maintain the required percentage
     of ownership of such stock, beneficially and of record, as minimally
     required to avoid or remedy such violation so long as:

               (A) there shall exist no Default or Event of Default (both
          before and after giving effect to any such redemption or repurchase);

               (B) the Borrower shall have (i) filed with the FCC a petition
          for declaratory order (or other form or petition or application as
          may be provided under FCC rules then in effect), complete in all
          material respects, requesting a determination that foreign ownership
          or control of the Borrower in excess of the limitation set forth in
          such Section 310(b)(4) is not contrary to the public interest such
          that no redemption or repurchase is necessary and (ii) prosecuted
          such petition in good faith, exhausted all of its remedies before the
          FCC to obtain a determination obviating a need to make such
          redemption or repurchase, and had such petition denied by the FCC;

               (C) prior to the date of any such redemption or repurchase, the
          Administrative Agent shall have received (i) written notice of such
          redemption or repurchase, (ii) evidence reasonably satisfactory to
          the Administrative Agent that the condition in clause (B) above has
          been met, and (iii) the written opinion of legal counsel to the
          Borrower for FCC matters to the effect that, based on reasonable
          procedures used by the FCC to determine compliance with such
          ownership restrictions, the Borrower would likely be in material
          violation of such Section 310(b)(4) unless such redemption or
          purchase is made; and

               (D) the aggregate amount expended in connection with all
          redemptions and/or repurchases pursuant to this clause (v) shall not
          exceed $5,000,000.

          9.04 Indebtedness. The Borrower will not, and will not permit any of
its Subsidiaries to, contract, create, incur, assume or suffer to exist any
Indebtedness, except:

          (i) Indebtedness incurred pursuant to this Agreement and the other
     Credit Documents;

          (ii) Existing Indebtedness outstanding on the Initial Borrowing Date
     and listed on Schedule VII, without giving effect to any subsequent
     extension, renewal or refinancing thereof except to the extent set forth
     on Schedule VII, provided that the aggregate principal amount of the
     Indebtedness to be extended, renewed or refinanced does not increase from
     that amount outstanding at the time of any such extension, renewal or
     refinancing;


                                     -68-
<PAGE>   70

          (iii) Indebtedness under Interest Rate Protection Agreements entered
     into with respect to other Indebtedness permitted under this Section 9.04
     so long as all of the terms and conditions of such Interest Rate
     Protection Agreements are reasonably satisfactory to the Agents;

          (iv) Indebtedness of the Borrower and its Subsidiaries (x) evidenced
     by Capitalized Lease Obligations to the extent permitted pursuant to
     Section 9.07 or (y) secured by Liens permitted under Section 9.01(viii),
     provided that in no event shall the aggregate principal amount of all
     Indebtedness permitted by this clause (iv) exceed $10,000,000 at any time
     outstanding;

          (v) intercompany Indebtedness among the Borrower and its Subsidiaries
     to the extent permitted by Sections 9.05(ix), (x) and (xi);

          (vi) Indebtedness of the Borrower under the 11-1/4% Senior
     Subordinated Discount Notes in an aggregate principal amount not to exceed
     the aggregate principal amount of 11-1/4% Senior Subordinated Discount
     Notes outstanding on the Effective Date (which amount shall be increased
     by any accretion of original issue discount in respect thereof and shall
     be permanently reduced by any repayments of principal thereof);

          (vii) Indebtedness of the Borrower under the 15% Senior Discount
     Notes in an aggregate principal amount not to exceed the aggregate
     principal amount of 15% Senior Discount Notes outstanding on the Effective
     Date (which amount shall be increased by any accretion of original issue
     discount in respect thereof and shall be permanently reduced by any
     repayments of principal thereof);

          (viii) Indebtedness of the Borrower under the Vendor Financing
     Agreement in an aggregate principal amount not to exceed at any time
     outstanding (x) $30,000,000 minus (y) the aggregate amount, if any,
     theretofore applied to repay Indebtedness outstanding under the Vendor
     Financing Agreement as contemplated by the proviso to the definition of
     Net Equity Proceeds contained herein, provided, however, until such time
     as the Borrower and Glenayre shall have entered into the VFA Amendment, no
     Indebtedness shall be permitted to be incurred by the Borrower, or at any
     time after the Initial Borrowing Date be permitted by the Borrower to
     remain outstanding, under the Vendor Financing Agreement;

          (ix) Replacement Senior Notes of the Borrower issued after the
     Initial Borrowing Date, 100% of the Net Debt Proceeds of which are used to
     permanently redeem all or a portion of the 15% Senior Discount Notes then
     outstanding; provided that Replacement Senior Notes may only be issued if
     (i) the principal amount thereof (or, if issued at a discount, the face
     amount thereof less the amount of such discount) does not exceed the
     amount of the proceeds therefrom to be used to redeem principal of then
     outstanding 15% Senior Discount Notes plus the amount of any premiums and
     other fees (including underwriting fees) and expenses to be incurred in
     connection therewith, (ii) no Default or Event of Default then exists or
     would occur as a result of the issuance thereof, (iii) the covenants and
     events of default contained in any such Replacement Senior Notes 


                                     -69-
<PAGE>   71

     are not more restrictive on the Borrower and its Subsidiaries, and are no
     less favorable to the Lenders, than those set forth in the 15% Senior
     Discount Note Indenture (provided that, in no event, shall such issue of
     Replacement Senior Notes have any financial maintenance or capital
     expenditure restrictions (whether formulated as a covenant, event of
     default or otherwise)), (iv) the terms and conditions of any such
     Replacement Senior Notes do not have any mandatory repayment, prepayment,
     redemption, sinking fund, amortization or maturity prior to the date that
     is one year after the later of (x) the Multiple Draw I/Revolver Maturity
     Date and (y) the latest Multiple Draw II Maturity Date in effect at the
     time of the issuance of such Replacement Senior Notes (other than (x) an
     option of the holders to require the Borrower to repurchase such
     Replacement Senior Notes upon a change of control thereunder, provided
     that the terms of such change of control put are no more favorable to the
     holders than those set forth in the 15% Senior Discount Note Indenture and
     (y) requirements to apply proceeds of certain sales to make offers to
     purchase Replacement Senior Notes, provided that the terms thereof are no
     more favorable to the holders than those set forth in the 15% Senior
     Discount Note Indenture), (v) all Replacement Senior Notes shall be
     unsecured and shall be issued by the Borrower and shall not be entitled to
     the benefits of guarantees except to the extent required on substantially
     the same terms as those contained in the 15% Senior Discount Note
     Indenture and (vi) all terms and conditions of, and the documentation for,
     each issuance of Replacement Senior Notes shall be satisfactory to the
     Agents;

          (x) Replacement Senior Subordinated Notes of the Borrower issued
     after the Initial Borrowing Date, 100% of the Net Debt Proceeds of which
     are used to permanently redeem all or a portion of the 11-1/4% Senior
     Subordinated Discount Notes then outstanding; provided that Replacement
     Senior Subordinated Notes may only be issued if (i) the principal amount
     thereof (or, if issued at a discount, the face amount thereof less the
     amount of such discount) does not exceed the amount of the proceeds
     therefrom to be used to redeem principal of then outstanding 11-1/4%
     Senior Subordinated Discount Notes plus the amount of any premiums and
     other fees (including underwriting fees) and expenses to be incurred in
     connection therewith, (ii) no Default or Event of Default then exists or
     would occur as a result of the issuance thereof, (iii) the covenants and
     events of default contained in any such Replacement Senior Subordinated
     Notes are not more restrictive on the Borrower and its Subsidiaries, and
     are no less favorable to the Lenders, than those set forth in the 11-1/4%
     Senior Subordinated Discount Note Indenture (provided that, in no event,
     shall such issue of Replacement Senior Subordinated Discount Notes have
     any financial maintenance or capital expenditure restrictions (whether
     formulated as a covenant, event of default or otherwise)), (iv) the terms
     and conditions of any such Replacement Senior Subordinated Notes do not
     have any mandatory repayment, prepayment, redemption, sinking fund,
     amortization or maturity prior to the date that is one year after the
     later of (x) the Multiple Draw I/Revolver Maturity Date and (y) the latest
     Multiple Draw II Maturity Date in effect at the time of the issuance of
     such Replacement Senior Subordinated Notes (other than (x) an option of
     the holders to require the Borrower to repurchase such Replacement Senior
     Subordinated Notes upon a change of control thereunder, provided that the
     terms of such change of control put are no more favorable to the holders
     than those set forth in the 11-1/4% Senior Subordinated


                                     -70-
<PAGE>   72

     Discount Note Indenture and (y) requirements to apply proceeds of certain
     sales to make offers to purchase Replacement Senior Subordinated Notes,
     provided that the terms thereof are no more favorable to the holders than
     those set forth in the 11-1/4% Senior Subordinated Discount Note
     Indenture), (v) all Replacement Senior Subordinated Notes shall be
     subordinated to the Obligations pursuant to terms at least as favorable to
     the Lenders as the subordination terms contained in the 11-1/4% Senior
     Subordinated Note Indenture, (vi) all Replacement Senior Subordinated
     Notes shall be unsecured and shall be issued by the Borrower and shall not
     be entitled to the benefits of guarantees except to the extent required on
     substantially the same terms as those contained in the 11-1/4% Senior
     Subordinated Note Indenture and (vii) all terms and conditions of
     (including the subordination provisions), and the documentation for, each
     issuance of Replacement Senior Subordinated Notes shall be satisfactory to
     the Agents;

          (xi) Indebtedness of the Borrower incurred pursuant to the GTE
     Transaction in an aggregate amount not to exceed $5,000,000;

          (xii) Indebtedness of a Subsidiary Guarantor pursuant to a guarantee
     by such Subsidiary Guarantor of Indebtedness permitted under Section
     9.04(vi), (vii), (ix) or (x), in each case so long as, and for so long as,
     such Person continues to constitute a Subsidiary Guarantor as defined
     herein, provided that any guarantee by such Subsidiary Guarantor of
     Indebtedness permitted under Section 9.04(vi) or (x) shall be subordinated
     to the obligations of such Subsidiary Guarantor under the Subsidiary
     Guaranty in a manner at least as favorable to the Lenders as the
     subordination terms applicable to the Borrower contained in the 11-1/4%
     Senior Subordinated Note Indenture or the Replacement Senior Subordinated
     Note Documents, as the case may be; and

          (xiii) additional unsecured Indebtedness incurred by the Borrower and
     the Subsidiary Guarantors in an aggregate principal amount not to exceed
     $2,500,000 at any one time outstanding.

          9.05 Advances, Investments and Loans. The Borrower will not, and will
not permit any of its Subsidiaries to, directly or indirectly, lend money or
credit or make advances to any Person, or purchase or acquire any stock,
obligations or securities of, or any other interest in, or make any capital
contribution to, any other Person, or purchase or own a futures contract or
otherwise become liable for the purchase or sale of currency or other
commodities at a future date in the nature of a futures contract, or hold any
cash or Cash Equivalents (each of the foregoing an "Investment" and,
collectively, "Investments"), except that the following shall be permitted:

          (i) the Borrower and its Subsidiaries may acquire and hold accounts
     receivables owing to any of them, if created or acquired in the ordinary
     course of business and payable or dischargeable in accordance with
     customary trade terms of the Borrower or such Subsidiary;

          (ii) the Borrower and its Subsidiaries may acquire and hold cash and
     Cash Equivalents, provided that during any time when Revolving Loans or
     Swingline Loans are outstanding, the aggregate amount of cash and Cash
     Equivalents permitted to be held by 


                                     -71-
<PAGE>   73

     the Borrower and its Subsidiaries shall not exceed $5,000,000 for any
     period of five consecutive Business Days;

          (iii) the Borrower and its Subsidiaries may hold the Investments held
     by them on the Initial Borrowing Date and described on Schedule XII,
     provided that any additional Investments made with respect thereto shall
     be permitted only if independently justified under the other provisions of
     this Section 9.05;

          (iv) the Borrower and its Subsidiaries may acquire and own
     investments (including debt obligations) received in connection with the
     bankruptcy or reorganization of suppliers and customers and in good faith
     settlement of delinquent obligations of, and other disputes with,
     customers and suppliers arising in the ordinary course of business;

          (v) the Borrower and its Subsidiaries may make loans and advances in
     the ordinary course of business to their respective employees so long as
     the aggregate principal amount thereof at any time outstanding (determined
     without regard to any write-downs or write-offs of such loans and
     advances) shall not exceed $500,000;

          (vi) the Borrower may acquire and hold obligations of one or more
     officers or other employees of the Borrower or any of its Subsidiaries in
     connection with such officers' or employees' acquisition of shares of
     common stock of the Borrower so long as no cash is paid by the Borrower or
     any of its Subsidiaries to such officers or employees in connection with
     the acquisition of any such obligations;

          (vii) the Borrower may enter into Interest Rate Protection Agreements
     to the extent permitted by Section 9.04(iii);

          (viii) the Borrower and the Subsidiary Guarantors may make cash
     common equity contributions to the capital of their respective
     Subsidiaries which are Subsidiary Guarantors;

          (ix) the Borrower and the Subsidiary Guarantors may make intercompany
     loans and advances between or among one another (together with any
     intercompany loans referred to in clauses (x) and (xi) below,
     collectively, "Intercompany Loans"), so long as each Intercompany Loan
     made pursuant to this clause (ix) shall be evidenced by an Intercompany
     Note that is pledged to the Collateral Agent pursuant to the Pledge
     Agreement;

          (x) the Borrower and the Subsidiary Guarantors may make cash common
     equity contributions to the capital of, and Intercompany Loans to,
     Non-Guarantor Subsidiaries so long as (i) the aggregate amount of all such
     Investments made pursuant to this clause (x) does not exceed $500,000
     (determined without regard to any write-downs or write-offs thereof) and
     (ii) each Intercompany Loan made pursuant to this clause (x) shall be
     evidenced by an Intercompany Note that is pledged to the Collateral Agent
     pursuant to the Pledge Agreement, provided that in the event that any
     Non-Guarantor Subsidiary that has received a cash common equity
     contribution and/or an Intercompany 


                                     -72-
<PAGE>   74

     Loan pursuant to this clause (x) ceases to constitute a Subsidiary, such
     Investment shall only be permitted if independently justified under clause
     (xiii) below;

          (xi) the Non-Guarantor Subsidiaries may make cash common equity
     contributions to the capital of, and Intercompany Loans to, other
     Non-Guarantor Subsidiaries, provided that in the event that (A) any
     Non-Guarantor Subsidiary that has made a cash common equity contribution
     and/or Intercompany Loan pursuant to this clause (xi) ceases to constitute
     same, such Investment shall only be permitted if independently justified
     under clause (x) above or clause (xiii) below and (B) in the event that
     any Non-Guarantor Subsidiary which has received a common equity
     contribution or Intercompany Loan pursuant to this clause (xi) ceases to
     constitute a Subsidiary of the Borrower, any remaining Investment therein
     by the Borrower or any of its Subsidiaries will be required to be
     independently justified under another clause of this Section 9.05;

          (xii) non-cash consideration received by the Borrower or any of its
     Subsidiaries in connection with any sale of assets to the extent permitted
     under Section 9.02(ii); and

          (xiii) the Borrower and its Subsidiaries may make additional
     Investments (determined without duplication in the case of Investments
     made through one or more Subsidiaries of the Borrower) not otherwise
     permitted under this Section 9.05 in an aggregate amount not to exceed (x)
     $5,000,000 in any fiscal year of the Borrower and (y) $12,500,000 in the
     aggregate (in each case determined without regard to any write-downs or
     write-offs thereof), provided, however, that of the $12,500,000 aggregate
     Investments permitted to be made pursuant to this clause (xiii), not more
     than $7,500,000 of such Investments may be made in Persons other than
     PageMart Canada.

          9.06 Transactions with Affiliates. The Borrower will not, and will
not permit any of its Subsidiaries to, enter into any transaction or series of
related transactions, whether or not in the ordinary course of business, with
any Affiliate of the Borrower or any of its Subsidiaries, other than in the
ordinary course of business and on terms and conditions substantially as
favorable to the Borrower or such Subsidiary as would reasonably be obtained by
the Borrower or such Subsidiary at that time in a comparable arm's-length
transaction with a Person other than an Affiliate, except that the following in
any event shall be permitted:

          (i) Dividends may be paid to the extent provided in Section 9.03;

          (ii) loans may be made and other transactions may be entered into by
     the Borrower and its Subsidiaries to the extent permitted by Sections
     9.02, 9.04 and 9.05;

          (iii) the payment of fees to any Person for investment banking
     services (including, without limitation, any underwriting discounts and
     commissions and placement agent fees) performed in the ordinary course of
     such Person's business;

          (iv) roaming, switching and similar types of agreements customary in
     the paging industry;


                                     -73-
<PAGE>   75

          (v) the provision by the Borrower or any of its Subsidiaries of
     technical expertise to any of its Affiliates;

          (vi) customary directors' fees, indemnification and similar
     arrangements, employee salaries, bonuses or employment agreements,
     compensation or employment benefit arrangements and incentive arrangements
     with any officer, director or employee of the Borrower entered into in the
     ordinary course of business (including customary benefits thereunder) and
     permitted by applicable law; and

          (vii) the transactions contemplated in this Agreement may be entered
     into by the Borrower and its Subsidiaries.

          9.07 Capital Expenditures. (a) The Borrower will not, and will not
permit any of its Subsidiaries to, make any Capital Expenditures, except that
during any fiscal year of the Borrower set forth below (taken as one accounting
period), the Borrower and its Subsidiaries may make Capital Expenditures so
long as the aggregate amount of all such Capital Expenditures does not exceed
in any fiscal year of the Borrower set forth below the amount set forth
opposite such fiscal year below:

<TABLE>
<CAPTION>
          Fiscal Year Ending                                Amount
          ------------------                                ------
          <S>                                            <C>
          December 31, 1999                              $125,000,000
          December 31, 2000                              $125,000,000
          December 31, 2001                              $125,000,000
          December 31, 2002                              $100,000,000
          December 31, 2003                              $100,000,000
</TABLE>

          (b) In addition to the foregoing, the Borrower and its Subsidiaries
may make Capital Expenditures with the amount of Net Sale Proceeds received by
the Borrower or any of its Subsidiaries from any Asset Sale so long as an
amount equal to such Net Sale Proceeds is reinvested in assets used or to be
used in the businesses referred to in Section 9.14(a) within 180 days following
the date of such Asset Sale to the extent such Net Sale Proceeds are not
otherwise required to be applied to repay outstanding Term Loans and/or to
reduce the Total Multiple Draw I Term Loan Commitment, or the Total Multiple
Draw II Term Loan Commitment, as the case may be, pursuant to Section 4.02(e)
or reduce the Total Revolving Loan Commitment pursuant to Section 3.03(e), as
the case may be.

          (c) In addition to the foregoing, the Borrower and its Subsidiaries
may make Capital Expenditures with the amount of Net Insurance Proceeds
received by the Borrower or any of its Subsidiaries from any Recovery Event so
long as such Net Insurance Proceeds are used to replace or restore any
properties or assets in respect of which such Net Insurance Proceeds were paid
within 270 days following the date of receipt of such Net Insurance Proceeds
from such Recovery Event to the extent such Net Insurance Proceeds are not
otherwise required to be applied to repay outstanding Term Loans and/or reduce
the Total Multiple Draw I Term Loan Commitment or the Total Multiple Draw II
Term Loan Commitment, as the case may be,


                                     -74-
<PAGE>   76

pursuant to Section 4.02(g) or reduce the Total Revolving Loan Commitment
pursuant to Section 3.03(e), as the case may be.

          (d) In addition to the foregoing, the Borrower may make Capital
Expenditures to the extent permitted under Section 9.02(ix).

          9.08 Consolidated Cash Interest Coverage Ratio. The Borrower will not
permit the Consolidated Cash Interest Coverage Ratio for any Test Period ending
(x) on or prior to December 31, 2000 to be less than 1.75:1.00 and (y) after
December 31, 2000 to be less than 2.00:1.00.

          9.09 Minimum TMS EBITDA. (a) The Borrower will not permit
Consolidated TMS EBITDA for any Test Period ending on the last day of a fiscal
quarter of the Borrower set forth below to be less than the amount set forth
opposite such fiscal quarter below:

<TABLE>
<CAPTION>
          Fiscal Quarter Ending                           Amount
          ---------------------                           ------
          <S>                                          <C>        
          June 30, 1999                                $55,000,000
          September 30, 1999                           $60,000,000
          December 31, 1999                            $60,000,000
          March 31, 2000                               $65,000,000
          June 30, 2000                                $70,000,000
          September 30, 2000                           $70,000,000
          Thereafter                                   $75,000,000
</TABLE>

          (b) In addition, the Borrower will not permit Consolidated TMS EBITDA
for any fiscal quarter of the Borrower to be less than $13,500,000.

          9.10 Minimum Consolidated EBITDA. The Borrower will not permit
Consolidated EBITDA for any Test Period ending on the last day of a fiscal
quarter of the Borrower set forth below to be less than the amount set forth
opposite such fiscal quarter below:

<TABLE>
<CAPTION>
          Fiscal Quarter Ending                           Amount
          ---------------------                           ------
          <S>                                          <C>        
          June 30, 1999                                $ 30,000,000
          September 30, 1999                           $ 30,000,000
          December 31, 1999                            $ 30,000,000
          March 31, 2000                               $ 35,000,000
          June 30, 2000                                $ 40,000,000
          September 30, 2000                           $ 45,000,000
          December 31, 2000                            $ 55,000,000
          March 31, 2001                               $ 65,000,000
          June 30, 2001                                $ 75,000,000
          September 30, 2001                           $ 85,000,000
          December 31, 2001                            $ 95,000,000
          March 31, 2002                               $100,000,000
</TABLE>


                                     -75-
<PAGE>   77

<TABLE>
<CAPTION>
          Fiscal Quarter Ending                           Amount
          ---------------------                           ------
          <S>                                          <C>        
          June 30, 2002                                $105,000,000
          September 30, 2002                           $110,000,000
          December 31, 2002                            $120,000,000
          March 31, 2003                               $130,000,000
          June 30, 2003                                $140,000,000
          September 30, 2003                           $150,000,000
          Thereafter                                   $170,000,000
</TABLE>

          9.11 Limitations on Payments of Certain Indebtedness; Modifications
of Certain Indebtedness; Modifications of Certificate of Incorporation, By-Laws
and Certain Other Agreements; etc. (a) The Borrower will not, and will not
permit any of its Subsidiaries to, (i) make (or give any notice in respect of)
any voluntary or optional payment or prepayment on or redemption or acquisition
for value of, or any prepayment or redemption as a result of any asset sale,
change of control or similar event of (including in each case, without
limitation, by way of depositing with the trustee with respect thereto or any
other Person money or securities before due for the purpose of paying when
due), any 11-1/4% Senior Subordinated Discount Notes, 15% Senior Discount
Notes, any Replacement Senior Notes or any Replacement Senior Subordinated
Notes, provided that, so long as no Default or Event of Default then exists or
would result therefrom, the Borrower may redeem, repurchase or otherwise retire
(A) 15% Senior Discount Notes with proceeds received from (1) incurrences of
Multiple Draw II Term Loans or (2) Replacement Senior Notes issued pursuant to
Section 9.04(x) and (B) 11-1/4% Senior Subordinated Discount Notes with
proceeds from Replacement Senior Subordinated Notes issued pursuant to Section
9.04(xi), (ii) amend or modify, or permit the amendment or modification of, any
provision of (A) the 11-1/4% Senior Subordinated Discount Notes or any other
11-1/4% Senior Subordinated Discount Note Document, (B) the 15% Senior Discount
Notes or any other 15% Senior Discount Note Document, (C) after the issuance
thereof, the Replacement Senior Notes or any other Replacement Senior Note
Document, (D) after the issuance thereof, the Replacement Senior Subordinated
Notes or any other Replacement Senior Subordinated Note Document or (E) the
Vendor Financing Agreement, (iii) amend, modify or change its certificate or
articles of incorporation (including, without limitation, by the filing or
modification of any certificate or articles of designation) or by-laws (or the
equivalent organizational documents) or any agreement entered into by it with
respect to its capital stock (including any Shareholders' Agreement), or enter
into any new agreement with respect to its capital stock, unless such
amendment, modification, change or other action contemplated by this clause
(iii) could not reasonably be expected to be adverse to the interests of the
Lenders in any material respect, or (iv) enter into any tax sharing agreement,
tax allocation agreement or similar agreement without the prior written consent
of each Agent.

          (b) The Borrower will not, and will not permit any of its
Subsidiaries to, designate any Indebtedness other than the Obligations, as
"Designated Senior Indebtedness" for the purposes of (x) the 11-1/4% Senior
Subordinated Discount Notes and the other 11-1/4% Senior Subordinated Discount
Note Documents or (y) after the issuance thereof, the Replacement Senior
Subordinated Notes or any other Replacement Senior Subordinated Note Document.


                                     -76-
<PAGE>   78

          (c) The Borrower will not, and will not permit any of its
Subsidiaries to, make any cash interest payments on (i) the 11-1/4% Senior
Subordinated Discount Notes prior to August 1, 2003, provided that, in
connection with any redemption, repurchase or retirement of 11-1/4% Senior
Subordinated Discount Notes in accordance with (and to the extent permitted by)
the provisions of Section 9.11(a) occurring after February 1, 2003, the
Borrower may make payments of accrued and unpaid interest owing thereon, or
(ii) the 15% Senior Discount Notes prior to August 1, 2000, provided that, in
connection with any redemption, repurchase or retirement of 15% Senior Discount
Notes in accordance with (and to the extent permitted by) the provisions of
Section 9.11(a) occurring after February 1, 2000, the Borrower may make
payments of accrued and unpaid interest owing thereon.

          9.12 Limitation on Certain Restrictions on Subsidiaries. The Borrower
will not, and will not permit any of its Subsidiaries to, directly or
indirectly, create or otherwise cause or suffer to exist or become effective
any encumbrance or restriction on the ability of any such Subsidiary to (a) pay
dividends or make any other distributions on its capital stock or any other
interest or participation in its profits owned by the Borrower or any
Subsidiary of the Borrower, or pay any Indebtedness owed to the Borrower or any
Subsidiary of the Borrower, (b) make loans or advances to the Borrower or any
Subsidiary of the Borrower or (c) transfer any of its properties or assets to
the Borrower or any Subsidiary of the Borrower, except for such encumbrances or
restrictions existing under or by reason of (i) applicable law, (ii) this
Agreement and the other Credit Documents, (iii) the Vendor Financing Agreement,
the 11-1/4% Senior Subordinated Discount Note Documents and the 15% Senior
Discount Note Documents, each as in effect on the Initial Borrowing Date, and
any such encumbrances or restrictions contained in any Replacement Senior Note
Documents or Replacement Senior Subordinated Note Documents, so long as such
encumbrances and restrictions are no less favorable to the Lenders than those
contained in the 15% Senior Discount Note Documents or the 11-1/4% Senior
Subordinated Note Documents, as the case may be, (iv) customary provisions
restricting subletting or assignment of any lease governing a leasehold
interest of the Borrower or any Subsidiary of the Borrower, (v) customary
provisions restricting assignment of any licensing agreement or other contract
entered into by the Borrower or any Subsidiary of the Borrower in the ordinary
course of business, (vi) customary restrictions on dispositions of Real
Property of the Borrower contained in reciprocal easement agreements entered
into by the Borrower or any Subsidiary in the ordinary course of business and
(vii) restrictions on the transfer of any asset subject to a Lien permitted by
Section 9.01(vi), (vii) or (viii).

          9.13 Limitation on Issuance of Capital Stock. (a) The Borrower will
not, and will not permit any of its Subsidiaries to, issue (i) any preferred
stock, except that the Borrower may at any time and from time to time issue
Qualified Preferred Stock of the Borrower, or (ii) any redeemable common stock
other than common stock that is redeemable at the sole option of the Borrower
or such Subsidiary, as the case may be.

          (b) The Borrower will not permit any of its Subsidiaries to issue any
capital stock (including by way of sales of treasury stock) or any options or
warrants to purchase, or securities convertible into, capital stock, except (i)
for transfers and replacements of then outstanding shares of capital stock,
(ii) for stock splits, stock dividends and issuances which do not decrease the
percentage ownership of the Borrower or any of its Subsidiaries in any class of

                                     -77-
<PAGE>   79

the capital stock of such Subsidiary, (iii) to qualify directors to the extent
required by applicable law, (iv) for issuances by newly created or acquired
Subsidiaries in accordance with the terms of this Agreement or (v) for
issuances of non-redeemable common stock (or the equivalent) by any Foreign
Subsidiary.

          9.14 Business. (a) The Borrower and its Subsidiaries will not engage
in any business other than the business engaged in by the Borrower and its
Subsidiaries as of the Initial Borrowing Date and reasonable extensions
thereof.

          (b) Notwithstanding the foregoing, (i) all the FCC Licenses shall be
held by License Subsidiaries and (ii) the License Subsidiaries shall not own
any significant assets or have any material liabilities other than their
respective FCC Licenses and those liabilities under this Agreement and the
other Credit Documents to which they are a party.

          9.15 Limitation on Creation of Subsidiaries. (a) Except as otherwise
specifically provided in immediately succeeding clause (b), the Borrower will
not, and will not permit any of its Subsidiaries to, establish, create or
acquire after the Initial Borrowing Date any Subsidiary, provided that the
Borrower and its Wholly-Owned Subsidiaries shall be permitted to establish or
create Wholly-Owned Subsidiaries so long as (A) the equity interests of each
such new Wholly-Owned Subsidiary is pledged pursuant to, and to the extent
required by, the Pledge Agreement and the certificates representing such equity
interests, together with stock or other powers duly executed in blank, are
delivered to the Collateral Agent for the benefit of the Secured Creditors and
(B) to the extent such new Wholly-Owned Subsidiary Guarantor does not meet the
criteria required to constitute a Non-Guarantor Subsidiary in accordance with
the definition thereof, (i) such new Wholly-Owned Subsidiary executes a
counterpart of a guarantee in form and substance satisfactory to the Agents
(the "Subsidiaries Guaranty"), the Pledge Agreement and the Security Agreement
and (ii) such new Wholly-Owned Subsidiary, to the extent requested by any Agent
or the Required Lenders, takes all actions required pursuant to Section 8.11.
In addition, each new Wholly-Owned Subsidiary which becomes, or is required to
become, a Subsidiary Guarantor shall execute and deliver, or cause to be
executed and delivered, all other relevant documentation of the type described
in Section 5 as such new Wholly-Owned Subsidiary would have had to deliver if
such new Wholly-Owned Subsidiary were a Credit Party on the Initial Borrowing
Date.

          (b) In addition to Subsidiaries of the Borrower created pursuant to
preceding clause (a), the Borrower may establish Non-Guarantor Subsidiaries
after the Initial Borrowing Date as a result of Investments expressly permitted
to be made pursuant to Section 9.05; provided that all capital stock of each
such Non-Guarantor Subsidiary shall be pledged by any Credit Party which owns
same to the extent required by the Pledge Agreement; provided, however, that
such Non-Guarantor Subsidiary shall not be required to execute and deliver a
counterpart of the Subsidiaries Guaranty or any Security Documents, in each
case except to the extent thereafter required in accordance with the provisions
of Section 8.13.

          SECTION 10. Events of Default. Upon the occurrence of any of the
following specified events (each an "Event of Default"):


                                     -78-
<PAGE>   80

          10.01 Payments. The Borrower shall (i) default in the payment when
due of any principal of any Loan or any Note or (ii) default, and such default
shall continue unremedied for three or more Business Days, in the payment when
due of any interest on any Loan or Note, any Unpaid Drawing or any Fees or any
other amounts owing hereunder or thereunder; or

          10.02 Representations, etc. Any representation, warranty or statement
made or deemed made by any Credit Party herein or in any other Credit Document
or in any certificate delivered to any Agent or any Lender pursuant hereto or
thereto shall prove to be untrue in any material respect on the date as of
which made or deemed made; or

          10.03 Covenants. Any Credit Party shall (i) default in the due
performance or observance by it of any term, covenant or agreement contained in
Section 8.01(g)(i), 8.08 or Section 9 or (ii) default in the due performance or
observance by it of any other term, covenant or agreement contained in this
Agreement or any other Credit Document (other than those set forth in Sections
10.01 and 10.02) and such default shall continue unremedied for a period of 30
days after written notice thereof to the defaulting party by any Agent or the
Required Lenders; or

          10.04 Default Under Other Agreements. (i) The Borrower or any of its
Subsidiaries shall (x) default in any payment of any Indebtedness (other than
the Obligations) beyond the period of grace, if any, provided in the instrument
or agreement under which such Indebtedness was created or (y) default in the
observance or performance of any agreement or condition relating to any
Indebtedness (other than the Obligations) or contained in any instrument or
agreement evidencing, securing or relating thereto, or any other event shall
occur or condition exist, the effect of which default or other event or
condition is to cause, or to permit the holder or holders of such Indebtedness
(or a trustee or agent on behalf of such holder or holders) to cause
(determined without regard to whether any notice is required), any such
Indebtedness to become due prior to its stated maturity, or (ii) any
Indebtedness (other than the Obligations) of the Borrower or any of its
Subsidiaries shall be declared to be (or shall become) due and payable, or
required to be prepaid other than by a regularly scheduled required prepayment,
prior to the stated maturity thereof, provided that it shall not be a Default
or an Event of Default under this Section 10.04 unless the aggregate principal
amount of all Indebtedness as described in preceding clauses (i) and (ii) is at
least $2,000,000; or

          10.05 Bankruptcy, etc. The Borrower or any of its Subsidiaries shall
commence a voluntary case concerning itself under Title 11 of the United States
Code entitled "Bankruptcy," as now or hereafter in effect, or any successor
thereto (the "Bankruptcy Code"); or an involuntary case is commenced against
the Borrower or any of its Subsidiaries, and the petition is not controverted
within 10 days, or is not dismissed within 60 days, after commencement of the
case; or a custodian (as defined in the Bankruptcy Code) is appointed for, or
takes charge of, all or substantially all of the property of the Borrower or
any of its Subsidiaries, or the Borrower or any of its Subsidiaries commences
any other proceeding under any reorganization, arrangement, adjustment of debt,
relief of debtors, dissolution, insolvency or liquidation or similar law of any
jurisdiction whether now or hereafter in effect relating to the Borrower or any
of its Subsidiaries, or there is commenced against the Borrower or any of its
Subsidiaries any such proceeding which remains undismissed for a period of 60
days, or the Borrower or any of its Subsidiaries is adjudicated insolvent or
bankrupt; or any order of relief or other order approving any such case or

                                     -79-
<PAGE>   81

proceeding is entered; or the Borrower or any of its Subsidiaries suffers any
appointment of any custodian or the like for it or any substantial part of its
property to continue undischarged or unstayed for a period of 60 days; or the
Borrower or any of its Subsidiaries makes a general assignment for the benefit
of creditors; or any corporate action is taken by the Borrower or any of its
Subsidiaries for the purpose of effecting any of the foregoing; or

          10.06 ERISA. (a) Any Plan shall fail to satisfy the minimum funding
standard required for any plan year or part thereof under Section 412 of the
Code or Section 302 of ERISA or a waiver of such standard or extension of any
amortization period is sought or granted under Section 412 of the Code or
Section 303 or 304 of ERISA, a Reportable Event shall have occurred, a
contributing sponsor (as defined in Section 4001(a)(13) of ERISA) of a Plan
subject to Title IV of ERISA shall be subject to the advance reporting
requirement of PBGC Regulation Section 4043.61 (without regard to subparagraph
(b)(1) thereof) and an event described in subsection .62, .63, .64, .65, .66,
 .67 or .68 of PBGC Regulation Section 4043 shall be reasonably expected to
occur with respect to such Plan within the following 30 days, any Plan which is
subject to Title IV of ERISA shall have had or is likely to have a trustee
appointed to administer such Plan, any Plan which is subject to Title IV of
ERISA is, shall have been or is likely to be terminated or to be the subject of
termination proceedings under ERISA, any Plan shall have an Unfunded Current
Liability, a contribution required to be made with respect to a Plan or a
Foreign Pension Plan has not been timely made, the Borrower or any Subsidiary
of the Borrower or any ERISA Affiliate has incurred or is likely to incur any
liability to or on account of a Plan under Section 409, 502(i), 502(l), 515,
4062, 4063, 4064, 4069, 4201, 4204 or 4212 of ERISA or Section 401(a)(29), 4971
or 4975 of the Code or on account of a group health plan (as defined in Section
607(1) of ERISA or Section 4980B(g)(2) of the Code) under Section 4980B of the
Code, or the Borrower or any Subsidiary of the Borrower has incurred or is
likely to incur liabilities pursuant to one or more employee welfare benefit
plans (as defined in Section 3(1) of ERISA) that provide benefits to retired
employees or other former employees (other than as required by Section 601 of
ERISA) or Plans or Foreign Pension Plans, a "default" within the meaning of
Section 4219(c)(5) of ERISA shall occur with respect to any Plan, any
applicable law, rule or regulation is adopted, changed or interpreted, or the
interpretation or administration thereof is changed, in each case after the
date hereof, by any governmental authority or agency or by any court (a "Change
of Law"), or, as a result of a Change in Law, an event occurs following a
Change in Law, with respect to or otherwise affecting any Plan; (b) there shall
result from any such event or events the imposition of a lien, the granting of
a security interest, or a liability or a material risk of incurring a
liability; and (c) such lien, security interest or liability, individually
and/or in the aggregate, in the opinion of the Required Lenders, has had, or
could reasonably be expected to have, a material adverse effect on the
business, operations, properties, assets, liabilities, condition (financial or
otherwise) or prospects of the Borrower or of the Borrower and its Subsidiaries
taken as a whole; or

          10.07 Security Documents. At any time after the execution and
delivery thereof, any of the Security Documents shall cease to be in full force
and effect, or shall cease to give the Collateral Agent for the benefit of the
Secured Creditors the Liens, rights, powers and privileges purported to be
created thereby (including, without limitation, a perfected security interest
in, and Lien on, all of the Collateral, in favor of the Collateral Agent,
superior to and prior to the rights of 


                                     -80-
<PAGE>   82

all third Persons (except as permitted by Section 9.01), and subject to no
other Liens (except as permitted by Section 9.01); or

          10.08 Subsidiaries Guaranty. At any time after the execution and
delivery thereof, the Subsidiaries Guaranty or any provision thereof shall
cease to be in full force or effect as to any Subsidiary Guarantor, or any
Subsidiary Guarantor or any Person acting by or on behalf of such Subsidiary
Guarantor shall deny or disaffirm such Subsidiary Guarantor's obligations under
Subsidiary Guaranty or any Subsidiary Guarantor shall default in the due
performance or observance of any term, covenant or agreement on its part to be
performed or observed pursuant to Subsidiary Guaranty; or

          10.09 Judgments. One or more judgments or decrees shall be entered
against the Borrower or any Subsidiary of the Borrower involving in the
aggregate for the Borrower and its Subsidiaries a liability (not paid or fully
covered by a reputable and solvent insurance company) and such judgments and
decrees either shall be final and non-appealable or shall not be vacated,
discharged or stayed or bonded pending appeal for any period of 30 consecutive
days, and the aggregate amount of all such judgments equals or exceeds
$2,000,000; or

          10.10 Change of Control. A Change of Control shall occur; or

          10.11 Failure to Comply with the Communications Act. The Borrower or
any of its Subsidiaries shall fail to comply in any respect with the
Communications Act, or any FCC Rule (including, without limitation, a failure
to meet FCC build out requirements for the nationwide and regional personal
communication systems licenses held by the License Subsidiaries), and such
failure has, or could reasonably be expected to have, a material adverse effect
on the business, operations, properties, assets, liabilities, condition
(financial or otherwise) or prospects of the Borrower or of the Borrower and
its Subsidiaries taken as a whole; or

          10.12 Licenses. Any of the FCC Licenses is (a) revoked, rescinded,
suspended, modified in an adverse manner or not renewed in the ordinary course
for a full term or (b) subject to any decision by the FCC which designates a
hearing with respect to any application for renewal or which could result in
the FCC taking any action referred to in immediately preceding paragraph (a),
and such revocation, rescission, suspension, modification or decision (i) has,
or could reasonably be expected to have, a material adverse effect on the
business, operations, properties, assets, liabilities, conditions (financial or
otherwise) or prospects of the Borrower or of the Borrower and its Subsidiaries
taken as a whole or (ii) adversely affects the legal or character qualification
of the Borrower or any of its Subsidiaries to hold any FCC License;

then, and in any such event, and at any time thereafter, if any Event of
Default shall then be continuing, the Administrative Agent, upon the written
request of the Required Lenders, shall by written notice to the Borrower, take
any or all of the following actions, without prejudice to the rights of any
Agent, any Lender or the holder of any Note to enforce its claims against any
Credit Party (provided that, if an Event of Default specified in Section 10.05
shall occur with respect to the Borrower, the result which would occur upon the
giving of written notice by the Administrative Agent as specified in clauses
(i) and (ii) below shall occur automatically without the giving of any such
notice): (i) declare the Total Commitment terminated, whereupon all


                                     -81-
<PAGE>   83

Commitments of each Lender shall forthwith terminate immediately and any
Commitment Commission shall forthwith become due and payable without any other
notice of any kind; (ii) declare the principal of and any accrued interest in
respect of all Loans and the Notes and all Obligations owing hereunder and
thereunder to be, whereupon the same shall become, forthwith due and payable
without presentment, demand, protest or other notice of any kind, all of which
are hereby waived by each Credit Party; (iii) terminate any Letter of Credit
which may be terminated in accordance with its terms; (iv) direct the Borrower
to pay (and the Borrower agrees that upon receipt of such notice, or upon the
occurrence of an Event of Default specified in Section 10.05 with respect to
the Borrower, it will pay) to the Collateral Agent at the Payment Office such
additional amount of cash or Cash Equivalents, to be held as security by the
Collateral Agent, as is equal to the aggregate Stated Amount of all Letters of
Credit issued for the account of the Borrower and then outstanding; (v)
enforce, as Collateral Agent, all of the Liens and security interests created
pursuant to the Security Documents; and (vi) apply any cash collateral held by
the Administrative Agent pursuant to Section 4.02 to the repayment of the
Obligations.

          SECTION 11. Definitions and Accounting Terms.

          11.01 Defined Terms. As used in this Agreement, the following terms
shall have the following meanings (such meanings to be equally applicable to
both the singular and plural forms of the terms defined):

          "Additional Security Documents" shall have the meaning provided in
Section 8.11.

          "Adjusted Consolidated Net Income" shall mean, for any period,
Consolidated Net Income of the Borrower for such period plus, without
duplication, the sum of the amount of all net non-cash charges (including,
without limitation, depreciation, amortization, deferred tax expense and
non-cash interest expense) and net non-cash losses which were included in
arriving at Consolidated Net Income of the Borrower for such period, less the
amount of all net non-cash gains and non-cash credits which were included in
arriving at Consolidated Net Income of the Borrower for such period.

          "Adjusted Consolidated Working Capital" shall mean, at any time,
Consolidated Current Assets (but excluding therefrom all cash and Cash
Equivalents) less Consolidated Current Liabilities at such time.

          "Administrative Agent" shall mean BTCo, in its capacity as
Administrative Agent for the Lenders hereunder, and shall include any successor
to the Administrative Agent appointed pursuant to Section 12.09.

          "Advanced Messaging Services" shall mean the Borrower's and its
Subsidiaries' wireless messaging services relating to devices using ReFLEX(TM)
protocol (or a successor protocol) and which are held by their respective
subscribers for such services.

          "Advanced Messaging Units" shall mean the aggregate number of
wireless messaging devices using ReFLEX(TM) protocol (or a successor protocol)
and which are held by subscribers of the Borrower's or any of its Subsidiaries'
wireless messaging services, which have 


                                     -82-
<PAGE>   84

been activated by the Borrower or such Subsidiary, less any reserves against
any pagers established by the Borrower and its Subsidiaries, in each case
consistent with past practices.

          "Affiliate" shall mean, with respect to any Person, any other Person
directly or indirectly controlling, controlled by, or under direct or indirect
common control with, such Person. A Person shall be deemed to control another
Person if such Person possesses, directly or indirectly, the power (i) to vote
5% or more of the securities having ordinary voting power for the election of
directors of such corporation or (ii) to direct or cause the direction of the
management and policies of such other Person, whether through the ownership of
voting securities, by contract or otherwise.

          "Agent" shall mean and include the Administrative Agent and the
Syndication Agent.

          "Agreement" shall mean this Credit Agreement, as modified,
supplemented, amended, restated (including any amendment and restatement
hereof), extended, renewed, refinanced or replaced from time to time.

          "Applicable Margin" shall mean: (a) with respect to any Multiple Draw
I Term Loans or Revolving Loans, from and after any Start Date to and including
the corresponding End Date, the respective percentage per annum set forth below
under the respective Type of Multiple Draw I Term Loans or Revolving Loans and
opposite the respective Level (i.e., Level 1, Level 2, Level 3, Level 4, Level
5 or Level 6, as the case may be) indicated to have been achieved on the
applicable Test Date for such Start Date (as shown on the respective officer's
certificate delivered pursuant to Section 8.01(f) or the second proviso below):

<TABLE>
<CAPTION>
         Level            Leverage Ratio                   Multiple Draw I Term           Multiple Draw I Term Loans
         -----            --------------                   Loans and Revolving                and Revolving Loans
                                                           Loans maintained as                   maintained as
                                                             Base Rate Loans                   Eurodollar Loans
                                                             ---------------                   ----------------
         <S>              <C>                              <C>                            <C>
           1              Less than or equal to                   1.50%                              2.50%
                          4.00:1.00

           2              Greater than 4.00:1.00                  1.75%                              2.75%
                          but less than or
                          equal to 4.50:1.00

           3              Greater than 4.50:1.00                  2.00%                              3.00%
                          but less than or
                          equal to 5.00:1.00

           4              Greater than 5.00:1.00                  2.25%                              3.25%
                          but less than or
                          equal to 5.50:1.00
</TABLE>


                                     -83-
<PAGE>   85

<TABLE>
           <S>            <C>                              <C>                            <C>
           5              Greater than 5.50:1.00                  2.50%                              3.50%
                          but less than or
                          equal to 6.00:1.00

           6              Greater than 6.00:1.00                  2.75%                              3.75%
</TABLE>

; provided, however, that if the Borrower fails to deliver the financial
statements required to be delivered pursuant to Section 8.01(b) or (c)
(accompanied by the officer's certificate required to be delivered pursuant to
Section 8.01(f) showing the applicable Leverage Ratio on the relevant Test
Date) on or prior to the respective date required by such Sections, then Level
6 pricing shall apply until such time, if any, as the financial statements
required as set forth above and the accompanying officer's certificate have
been delivered showing the pricing for the respective Margin Reduction Period
is at a level which is less than Level 6 (it being understood that, in the case
of any late delivery of the financial statements and officer's certificate as
so required, the Applicable Margin, if any, shall apply only from and after the
date of the delivery of the complying financial statements and officers'
certificates); provided further, that Level 6 pricing shall apply at any time
when any Default or any Event of Default is in existence. Notwithstanding
anything to the contrary contained in the immediately preceding sentence, Level
6 pricing shall apply for the period from the Effective Date to but not
including the date which is the first Start Date after the Borrower's fiscal
quarter ending on September 30, 1999; and

          (b) with respect to any Multiple Draw II Term Loans incurred under a
Multiple Draw II Term Loan Sub-Facility, the respective percentages per annum
relating to the respective Type of Multiple Draw II Term Loans as set forth in
the applicable Multiple Draw II Term Loan Commitment Agreement, provided that
in no event shall the Applicable Margin exceed in the case of (i) Multiple Draw
II Term Loans maintained as Base Rate Loans, 5.00% and (ii) Multiple Draw II
Term Loans maintained as Eurodollar Loans, 6.00%.

          "Applicable RL Commitment Commission Percentage" shall mean (i) on or
prior to the Multiple Draw I Term Loan Full Utilization Date, 1.50% and (ii)
thereafter, 0.75%.

          "Asset Sale" shall mean any sale, transfer or other disposition by
the Borrower or any of its Subsidiaries to any Person (including by way of
redemption by such Person) other than to the Borrower or a Wholly-Owned
Subsidiary of the Borrower of any asset (including, without limitation, any
capital stock or other securities of, or equity interests in, another Person)
other than sales of assets pursuant to Sections 9.02 (v), (vi), (vii), (viii)
and (ix).

          "Assignment and Assumption Agreement" shall mean an Assignment and
Assumption Agreement substantially in the form of Exhibit L (appropriately
completed).


                                     -84-
<PAGE>   86

          "Available Revolving Loan Commitment" shall mean, at any time for any
RL Lender, such RL Lender's RL Percentage of the Total Available Revolving Loan
Commitment.

          "Bankruptcy Code" shall have the meaning provided in Section 10.05.

          "Base Rate" shall mean, at any time, the higher of (i) the Prime
Lending Rate and (ii) 1/2 of 1% in excess of the Federal Funds Rate.

          "Base Rate Loan" shall mean (i) each Swingline Loan and (ii) each
other Loan designated or deemed designated as such by the Borrower at the time
of the incurrence thereof or conversion thereto.

          "Borrower" shall have the meaning provided in the first paragraph of
this Agreement.

          "Borrowing" shall mean the borrowing of one Type of Loan of a single
Tranche from all the Lenders having Commitments of the respective Tranche (or
from the Swingline Lender in the case of Swingline Loans) on a given date (or
resulting from a conversion or conversions on such date) having in the case of
Eurodollar Loans the same Interest Period, provided that Base Rate Loans
incurred pursuant to Section 1.10(b) shall be considered part of the related
Borrowing of Eurodollar Loans.

          "BTCo" shall mean Bankers Trust Company, in its individual capacity,
and any successor corporation thereto by merger, consolidation or otherwise.

          "Business Day" shall mean (i) for all purposes other than as covered
by clause (ii) below, any day except Saturday, Sunday and any day which shall
be in New York, New York a legal holiday or a day on which banking institutions
are authorized or required by law or other government action to close and (ii)
with respect to all notices and determinations in connection with, and payments
of principal and interest on, Eurodollar Loans, any day which is a Business Day
described in clause (i) above and which is also a day for trading by and
between banks in the New York interbank Eurodollar market.

          "Capital Expenditures" shall mean, with respect to any Person, all
expenditures by such Person which should be capitalized in accordance with
generally accepted accounting principles and, without duplication, the amount
of Capitalized Lease Obligations incurred by such Person.

          "Capitalized Lease Obligations" shall mean, with respect to any
Person, all rental obligations of such Person which, under generally accepted
accounting principles, are or will be required to be capitalized on the books
of such Person, in each case taken at the amount thereof accounted for as
indebtedness in accordance with such principles.

          "Cash Equivalents" shall mean, as to any Person, (i) securities
issued or directly and fully guaranteed or insured by the United States or any
agency or instrumentality thereof (provided that the full faith and credit of
the United States is pledged in support thereof) having maturities of not more
than six months from the date of acquisition, (ii) marketable direct


                                     -85-
<PAGE>   87

obligations issued by any state of the United States or any political
subdivision of any such state or any public instrumentality thereof maturing
within six months from the date of acquisition thereof and, at the time of
acquisition, having one of the two highest ratings obtainable from either
Standard & Poor's Ratings Services or Moody's Investors Service, Inc., (iii)
Dollar denominated time deposits and certificates of deposit of any commercial
bank having, or which is the principal banking subsidiary of a bank holding
company having, a long-term unsecured debt rating of at least "A" or the
equivalent thereof from Standard & Poor's Ratings Services or "A2" or the
equivalent thereof from Moody's Investors Service, Inc. with maturities of not
more than six months from the date of acquisition by such Person, (iv)
repurchase obligations with a term of not more than seven days for underlying
securities of the types described in clause (i) above entered into with any
bank meeting the qualifications specified in clause (iii) above, (v) commercial
paper issued by any Person incorporated in the United States rated at least A-1
or the equivalent thereof by Standard & Poor's Ratings Services or at least P-1
or the equivalent thereof by Moody's Investors Service, Inc. and in each case
maturing not more than six months after the date of acquisition by such Person
and (vi) investments in money market funds substantially all of whose assets
are comprised of securities of the types described in clauses (i) through (v)
above.

          "CERCLA" shall mean the Comprehensive Environmental Response,
Compensation, and Liability Act of 1980, as the same may be amended from time
to time, 42 U.S.C. Section 9601 et seq.

          "Certificated Securities" shall have the meaning provided in the
Pledge Agreement.

          "Change of Control" shall mean (i) any Person or "group" (within the
meaning of Rules 13d-3 or 13d-5 under the Securities Exchange Act (as in effect
on the Effective Date)) or group of related persons, together with any
Affiliates thereof (other than the MS Funds) shall (A) have acquired beneficial
ownership of 30% or more on a fully diluted basis of the voting and/or economic
interest in the Borrower's capital stock or (B) have obtained power (whether or
not exercised) to elect a majority of the Borrower's directors, (ii) the Board
of Directors of the Borrower shall cease to consist of a majority of Continuing
Directors or (iii) a "change of control" or similar event shall occur under,
and as defined in, the 11-1/4% Senior Subordinated Note Indenture, the 15%
Senior Discount Note Indenture, the Vendor Financing Agreement, any Replacement
Senior Note Document or any Replacement Senior Subordinated Note Document.

          "Change of Law" shall have the meaning provided in Section 10.06.

          "Co-Arrangers" shall have the meaning provided in the first paragraph
of this Agreement.

          "Code" shall mean the Internal Revenue Code of 1986, as amended from
time to time, and the regulations promulgated and rulings issued thereunder.
Section references to the Code are to the Code, as in effect at the date of
this Agreement and any subsequent provisions of the Code, amendatory thereof,
supplemental thereto or substituted therefor.

          "Collateral" shall mean all property (whether real or personal) with
respect to which any security interests have been granted (or purported to be
granted) pursuant to any 


                                     -86-
<PAGE>   88

Security Document, including, without limitation, all Pledge Agreement
Collateral, all Security Agreement Collateral and all cash and Cash Equivalents
delivered as collateral pursuant to Section 4.02 or 10.

          "Collateral Agent" shall mean the Administrative Agent acting as
collateral agent for the Secured Creditors pursuant to the Security Documents.

          "Commitment" shall mean any of the commitments of any Lender, i.e.,
whether the Multiple Draw I Sub-Tranche A Term Loan Commitment, the Multiple
Draw I Sub-Tranche B Term Loan Commitment, the Multiple Draw I Sub-Tranche C
Term Loan Commitment, the Multiple Draw II Sub-Tranche A Term Loan Commitment,
the Multiple Draw II Sub-Tranche B Term Loan Commitment or the Revolving Loan
Commitment.

          "Commitment Commission" shall mean and include the Multiple Draw I
Sub-Tranche B Commitment Commission, the Multiple Draw I Sub-Tranche C
Commitment Commission, the RL Commitment Commission and any commitment
commission payable pursuant to Section 3.01(d).

          "Communications Act" shall mean the Communications Act of 1934, as
amended.

          "Consolidated Cash Interest Coverage Ratio" shall mean, for any
period, the ratio of Consolidated EBITDA of the Borrower to Consolidated Cash
Interest Expense for such period.

          "Consolidated Cash Interest Expense" shall mean, for any period,
Consolidated Interest Expense (other than Consolidated Interest Expense
attributable to (x) the accretion of original issue discount on Indebtedness
for borrowed money issued at less than face value thereof or (y) any interest
added to the principal amount of such Indebtedness) for such period.

          "Consolidated Current Assets" shall mean, at any time, the
consolidated current assets of the Borrower and its Subsidiaries at such time.

          "Consolidated Current Liabilities" shall mean, at any time, the
consolidated current liabilities of the Borrower and its Subsidiaries at such
time, but excluding the current portion of any Indebtedness under this
Agreement and the current portion of any other long-term Indebtedness which
would otherwise be included therein.

          "Consolidated EBIT" shall mean, for any period with respect to any
Person, Consolidated Net Income of such Person for such period before
consolidated interest expense of such Person and provision for taxes for such
period and without giving effect to (x) any extraordinary gains or losses and
(y) any gains or losses from sales of assets other than from sales of inventory
sold in the ordinary course of business (it being understood and agreed that
any gains from sales by the Borrower in any period of wireless messaging
devices previously leased by the Borrower and capitalized on its books shall be
included in the calculation of Consolidated EBIT for such period).


                                     -87-
<PAGE>   89

          "Consolidated EBITDA" shall mean, for any period with respect to any
Person, Consolidated EBIT of such Person for such period, adjusted by adding
thereto the amount of all amortization of intangibles and depreciation that
were deducted in arriving at Consolidated EBIT for such period.

          "Consolidated Indebtedness" shall mean, at any time, the sum of
(without duplication) (i) all Indebtedness of the Borrower and its Subsidiaries
as would be required to be reflected on the liability side of a balance sheet
of such Person in accordance with GAAP as determined on a consolidated basis,
(ii) all Indebtedness of the Borrower and its Subsidiaries of the type
described in clauses (iii) and (vii) of the definition of Indebtedness
contained herein and (iii) all Contingent Obligations of the Borrower and its
Subsidiaries in respect of Indebtedness of any third Person of the type
referred to in preceding clauses (i) and (ii) of this definition; provided that
for purposes of this definition, the amount of Indebtedness in respect of
Interest Rate Protection Agreements and Other Hedging Agreements shall be at
any time the unrealized net loss position, if any, of the Borrower and/or its
Subsidiaries thereunder on a marked-to-market basis determined no more than one
month prior to such time.

          "Consolidated Interest Expense" shall mean, for any period, the total
consolidated interest expense of the Borrower and its Subsidiaries for such
period (calculated without regard to any limitations on the payment thereof)
plus, without duplication, that portion of Capitalized Lease Obligations of the
Borrower and its Subsidiaries representing the interest factor for such period;
provided that the amortization of deferred financing, legal and accounting
costs with respect to this Agreement shall be excluded from Consolidated
Interest Expense to the extent same would otherwise have been included therein.

          "Consolidated Net Income" shall mean, for any period with respect to
any Person, the net income (or loss) of such Person for such period, determined
on a consolidated basis (after any deduction for minority interests), provided
that (i) in determining Consolidated Net Income, the net income (or loss) of
any other Person which is not a Subsidiary of such Person or is accounted for
by such Person by the equity method of accounting shall be included only to the
extent of the payment of cash dividends or distributions by such other Person
to such Person or a Subsidiary thereof during such period, (ii) the net income
of any Subsidiary of such Person shall be excluded to the extent that the
declaration or payment of cash dividends or similar distributions by that
Subsidiary of that net income is not at the date of determination permitted by
operation of its charter or any agreement, instrument or law applicable to such
Subsidiary and (iii) the net income (or loss) of any other Person acquired by
such specified Person or a Subsidiary of such Person in a pooling of interests
transaction for any period prior to the date of such acquisition shall be
excluded.

          "Consolidated TMS EBITDA" shall mean, for any period, that portion of
the Consolidated EBITDA of the Borrower for such period to the extent same is
attributable to the Borrower's and its Subsidiaries' Traditional Messaging
Services (and excluding Consolidated EBITDA attributable to Advanced Messaging
Services).

          "Contingent Obligation" shall mean, as to any Person, any obligation
of such Person as a result of such Person being a general partner of the other
Person, unless the 


                                     -88-
<PAGE>   90

underlying obligation is expressly made non-recourse as to such general
partner, and any obligation of such Person guaranteeing or intended to
guarantee any Indebtedness, leases, dividends or other obligations ("primary
obligations") of any other Person (the "primary obligor") in any manner,
whether directly or indirectly, including, without limitation, any obligation
of such Person, whether or not contingent, (i) to purchase any such primary
obligation or any property constituting direct or indirect security therefor,
(ii) to advance or supply funds (x) for the purchase or payment of any such
primary obligation or (y) to maintain working capital or equity capital of the
primary obligor or otherwise to maintain the net worth or solvency of the
primary obligor, (iii) to purchase property, securities or services primarily
for the purpose of assuring the owner of any such primary obligation of the
ability of the primary obligor to make payment of such primary obligation or
(iv) otherwise to assure or hold harmless the holder of such primary obligation
against loss in respect thereof; provided, however, that the term Contingent
Obligation shall not include endorsements of instruments for deposit or
collection in the ordinary course of business. The amount of any Contingent
Obligation shall be deemed to be an amount equal to the stated or determinable
amount of the primary obligation in respect of which such Contingent Obligation
is made or, if not stated or determinable, the maximum reasonably anticipated
liability in respect thereof (assuming such Person is required to perform
thereunder) as determined by such Person in good faith.

          "Continuing Directors" shall mean the directors of the Borrower on
the Effective Date and each other director if such director's nomination for
election to the Board of Directors of the Borrower is recommended by a majority
of the then Continuing Directors.

          "Credit Documents" shall mean this Agreement and, after the execution
and delivery thereof pursuant to the terms of this Agreement, each Note, the
Subsidiaries Guaranty, each Security Document and each Multiple Draw II Term
Loan Commitment Agreement.

          "Credit Event" shall mean the making of any Loan or the issuance of
any Letter of Credit.

          "Credit Party" shall mean the Borrower and each Subsidiary Guarantor.

          "Default" shall mean any event, act or condition which with notice or
lapse of time, or both, would constitute an Event of Default.

          "Defaulting Lender" shall mean any Lender with respect to which a
Lender Default is in effect.

          "Dividend" shall mean, with respect to any Person, that such Person
has declared or paid a dividend or returned any equity capital to its
stockholders or partners or authorized or made any other distribution, payment
or delivery of property (other than common stock of such Person) or cash to its
stockholders or partners as such, or redeemed, retired, purchased or otherwise
acquired, directly or indirectly, for a consideration any shares of any class
of its capital stock or any partnership interests outstanding on or after the
Effective Date (or any options or warrants issued by such Person with respect
to its capital stock), or set aside any funds for any of the foregoing
purposes, or shall have permitted any of its Subsidiaries to purchase or
otherwise 


                                     -89-
<PAGE>   91

acquire for a consideration any shares of any class of the capital stock or any
partnership interests of such Person outstanding on or after the Effective Date
(or any options or warrants issued by such Person with respect to its capital
stock). Without limiting the foregoing, "Dividends" with respect to any Person
shall also include all payments made or required to be made by such Person with
respect to any stock appreciation rights, plans, equity incentive or
achievement plans or any similar plans or setting aside of any funds for the
foregoing purposes other than any such payment made to employees of such Person
to the extent such payment has reduced Consolidated Net Income of such Person.

          "Dollars" and the sign "$" shall each mean freely transferable lawful
money of the United States.

          "Domestic Subsidiary" shall mean each Subsidiary of the Borrower
incorporated or organized in the United States of America or any State or
territory thereof.

          "Drawing" shall have the meaning provided in Section 2.05(b).

          "Effective Date" shall have the meaning provided in Section 13.10.

          "11-1/4% Senior Subordinated Discount Note Documents" shall mean the
11-1/4% Senior Subordinated Discount Note Indenture, the 11-1/4% Senior
Subordinated Discount Notes and each other document or agreement relating to
the issuance of the 11-1/4% Senior Subordinated Discount Notes.

          "11-1/4% Senior Subordinated Discount Note Indenture" shall mean the
Indenture, dated as of January 28, 1998, between the Borrower and United States
Trust Company of New York, as Trustee thereunder.

          "11-1/4% Senior Subordinated Discount Notes" shall mean the
Borrower's 11-1/4% Senior Subordinated Discount Notes due 2008 issued pursuant
to 11-1/4% Senior Subordinated Discount Note Indenture.

          "Eligible Transferee" shall mean and include a commercial bank,
financial institution, any fund that invests in loans or any other "accredited
investor" (as defined in Regulation D of the Securities Act), but in any event
excluding the Borrower and its Subsidiaries.

          "Employment Agreements" shall have the meaning provided in Section
5.05.

          "End Date" shall mean, for any Margin Reduction Period, the last day
of such Margin Reduction Period.

          "Environmental Claims" shall mean any and all administrative,
regulatory or judicial actions, suits, demands, demand letters, directives,
claims, liens, notices of noncompliance or violation, investigations or
proceedings relating in any way to any Environmental Law or any permit issued,
or any approval given, under any such Environmental Law (hereafter, "Claims"),
including, without limitation, (a) any and all Claims by governmental or
regulatory authorities for enforcement, cleanup, removal, response, remedial or
other actions or damages pursuant to any 


                                     -90-
<PAGE>   92

applicable Environmental Law, and (b) any and all Claims by any third party
seeking damages, contribution, indemnification, cost recovery, compensation or
injunctive relief in connection with alleged injury or threat of injury to
health, safety or the environment due to the presence of Hazardous Materials.

          "Environmental Law" shall mean any Federal, state, foreign or local
statute, law, rule, regulation, ordinance, code, guideline, written policy and
rule of common law now or hereafter in effect and in each case as amended, and
any judicial or administrative interpretation thereof, including any judicial or
administrative order, consent decree or judgment, relating to the environment,
health and safety or Hazardous Materials, including, without limitation, CERCLA;
RCRA; the Federal Water Pollution Control Act, 33 U.S.C. Section 1251 et seq.;
the Toxic Substances Control Act, 15 U.S.C. Section 2601 et seq.; the Clean Air
Act, 42 U.S.C. Section 7401 et seq.; the Safe Drinking Water Act, 42 U.S.C.
Section 3803 et seq.; the Oil Pollution Act of 1990, 33 U.S.C. Section 2701 et
seq.; the Emergency Planning and the Community Right-to-Know Act of 1986, 42
U.S.C. Section 11001 et seq.; the Hazardous Material Transportation Act, 49
U.S.C. Section 1801 et seq.; the Occupational Safety and Health Act, 29 U.S.C.
Section 651 et seq.; and any state and local or foreign counterparts or
equivalents, in each case as amended from time to time.

          "ERISA" shall mean the Employee Retirement Income Security Act of
1974, as amended from time to time, and the regulations promulgated and
applicable rulings issued thereunder. Section references to ERISA are to ERISA,
as in effect at the date of this Agreement and any subsequent provisions of
ERISA, amendatory thereof, supplemental thereto or substituted therefor.

          "ERISA Affiliate" shall mean each person (as defined in Section 3(9)
of ERISA) which together with the Borrower or a Subsidiary of the Borrower
would be deemed to be a "single employer" (i) within the meaning of Section
414(b), (c), (m) or (o) of the Code or (ii) as a result of the Borrower or a
Subsidiary of the Borrower being or having been a general partner of such
person.

          "Eurodollar Loan" shall mean each Loan (other than any Swingline
Loan) designated as such by the Borrower at the time of the incurrence thereof
or conversion thereto.

          "Eurodollar Rate" shall mean (a) the offered quotation to first-class
banks in the New York interbank Eurodollar market by BTCo for Dollar deposits
of amounts in immediately available funds comparable to the outstanding
principal amount of the Eurodollar Loan of BTCo with maturities comparable to
the Interest Period applicable to such Eurodollar Loan commencing two Business
Days thereafter as of 11:00 A.M. (New York time) on the date which is two
Business Days prior to the commencement of such Interest Period, divided (and
rounded upward to the nearest 1/16 of 1%) by (b) a percentage equal to 100%
minus the then stated maximum rate of all reserve requirements (including,
without limitation, any marginal, emergency, supplemental, special or other
reserves required by applicable law) applicable to any member bank of the
Federal Reserve System in respect of Eurocurrency funding or liabilities as
defined in Regulation D (or any successor category of liabilities under
Regulation D).

          "Event of Default" shall have the meaning provided in Section 10.


                                     -91-
<PAGE>   93

          "Excess Cash Flow" shall mean, for any period, the remainder of (a)
the sum of (i) Adjusted Consolidated Net Income for such period, (ii) the
decrease, if any, in Adjusted Consolidated Working Capital from the first day
to the last day of such period and (iii) the amount of any cash proceeds and
dividends received during such period (and not otherwise included in the
calculation of Adjusted Consolidated Net Income for such period) in respect of
Investments theretofore made by the Borrower and its Subsidiaries (in Persons
who are not Subsidiaries of the Borrower) as permitted by Sections 9.05(v) and
(xiii), minus (b) the sum of (i) the amount of all Capital Expenditures made by
the Borrower and its Subsidiaries during such period (other than Capital
Expenditures to the extent financed with equity proceeds, Asset Sale proceeds,
insurance proceeds or Indebtedness (other than Loans and Indebtedness under the
Vendor Financing Agreement)), (ii) the aggregate amount of permanent principal
payments of Indebtedness for borrowed money of the Borrower and its
Subsidiaries during such period (other than (A) repayments to the extent made
with Asset Sale proceeds, equity proceeds, insurance proceeds or Indebtedness
and (B) repayments of Loans, provided that repayments of Loans shall be
deducted in determining Excess Cash Flow if such repayments were (x) required
as a result of a Scheduled Repayment under Section 4.02(b)(i) or (ii) or (y)
made as a voluntary prepayment with internally generated funds (but in the case
of a voluntary prepayment of Revolving Loans or Swingline Loans, only to the
extent accompanied by a voluntary reduction to the Total Revolving Loan
Commitment)), (iii) the amount of Investments made by the Borrower and its
Subsidiaries during such period (in Persons who are not Subsidiaries of the
Borrower) pursuant to Sections 9.05(v) and (xiii) and (iv) the increase, if
any, in Adjusted Consolidated Working Capital from the first day to the last
day of such period.

          "Excess Cash Payment Date" shall mean the date occurring 90 days
after the last day of each fiscal year of the Borrower (beginning with its
fiscal year ending on December 31, 2000).

          "Excess Cash Payment Period" shall mean the immediately preceding
fiscal year of the Borrower.

          "Existing Credit Agreement" shall mean the Credit Agreement, dated as
of May 11, 1995, among the Borrower, the lenders party thereto, BT Commercial
Corporation, as agent and BTCo, as issuing bank, as same is in effect on the
Initial Borrowing Date.

          "Existing Indebtedness" shall have the meaning provided in Section
7.21.

          "Existing Indebtedness Agreements" shall have the meaning provided in
Section 5.05.

          "Facing Fee" shall have the meaning provided in Section 3.01(f).

          "FCC" shall mean the U.S. Federal Communications Commission, or any
successor thereto.

          "FCC Licenses" shall have the meaning provided in Section 7.22.

          "FCC Rules" shall mean the published rules, policies and regulations
of the FCC.


                                     -92-
<PAGE>   94

          "Federal Funds Rate" shall mean, for any period, a fluctuating
interest rate equal for each day during such period to the weighted average of
the rates on overnight Federal Funds transactions with members of the Federal
Reserve System arranged by Federal Funds brokers, as published for such day
(or, if such day is not a Business Day, for the next preceding Business Day) by
the Federal Reserve Bank of New York, or, if such rate is not so published for
any day which is a Business Day, the average of the quotations for such day on
such transactions received by the Administrative Agent from three Federal Funds
brokers of recognized standing selected by the Administrative Agent.

          "Fees" shall mean all amounts payable pursuant to or referred to in
Section 3.01.

          "15% Senior Discount Note Documents" shall mean the 15% Senior
Discount Note Indenture, the 15% Senior Discount Notes and each other document
or agreement relating to the issuance of the 15% Senior Discount Notes.

          "15% Senior Discount Note Indenture" shall mean the Indenture, dated
as of January 17, 1995, between the Borrower and United States Trust Company of
New York, as Trustee thereunder.

          "15% Senior Discount Notes" shall mean the Borrower's 15% Senior
Discount Notes due 2005 issued pursuant to the 15% Senior Discount Note
Indenture.

          "Foreign Pension Plan" shall mean any plan, fund (including, without
limitation, any superannuation fund) or other similar program established or
maintained outside the United States by the Borrower or any one or more of its
Subsidiaries primarily for the benefit of employees of the Borrower or such
Subsidiaries residing outside the United States, which plan, fund or other
similar program provides, or results in, retirement income, a deferral of
income in contemplation of retirement or payments to be made upon termination
of employment, and which plan is not subject to ERISA or the Code.

          "Foreign Person" shall have the meaning provided in the definition of
Subsidiary contained herein.

          "Foreign Subsidiary" shall mean each Subsidiary of the Borrower other
than a Domestic Subsidiary.

          "Glenayre" shall mean Glenayre Electronics, Inc., a Colorado
corporation.

          "Governmental Authorizations" shall have the meaning provided in
Section 7.23.

          "GTE" shall have the meaning in the definition of GTE Transaction.

          "GTE Transaction" shall mean one or more transactions between GTE
Corp. or an affiliate thereof (collectively, "GTE") and the Borrower pursuant
to which the Borrower shall purchase equipment, subscribers and other assets
from GTE for consideration consisting of cash and other property having an
aggregate value of not more than $10,000,000 (with the value of such other
property valued at the fair market value thereof (as determined in good faith
by the 


                                     -93-
<PAGE>   95

Board of Directors or senior management of the Borrower)) and, in turn, the
Borrower may dispose of certain of such purchased equipment, subscribers and
other assets.

          "Hazardous Materials" shall mean (a) any petroleum or petroleum
products, radioactive materials, asbestos in any form that is friable, urea
formaldehyde foam insulation, dielectric fluid containing levels of
polychlorinated biphenyls, and radon gas; (b) any chemicals, materials or
substances defined as or included in the definition of "hazardous substances,"
"hazardous waste," "hazardous materials," "extremely hazardous substances,"
"restricted hazardous waste," "toxic substances," "toxic pollutants,"
"contaminants," or "pollutants," or words of similar import, under any
applicable Environmental Law; and (c) any other chemical, material or
substance, the exposure to which is prohibited, limited or regulated by any
governmental authority.

          "Indebtedness" shall mean, as to any Person, without duplication, (i)
all indebtedness (including principal, interest, fees and charges) of such
Person for borrowed money or for the deferred purchase price of property or
services, (ii) the maximum amount available to be drawn under all letters of
credit issued for the account of such Person and all unpaid drawings in respect
of such letters of credit, (iii) all Indebtedness of the types described in
clause (i), (ii), (iv), (v), (vi) or (vii) of this definition secured by any
Lien on any property owned by such Person, whether or not such Indebtedness has
been assumed by such Person (provided that, if the Person has not assumed or
otherwise become liable in respect of such Indebtedness, such Indebtedness
shall be deemed to be in an amount equal to the fair market value of the
property to which such Lien relates as determined in good faith by such
Person), (iv) the aggregate amount required to be capitalized under leases
under which such Person is the lessee, (v) all obligations of such person to
pay a specified purchase price for goods or services, whether or not delivered
or accepted, i.e., take-or-pay and similar obligations, (vi) all Contingent
Obligations of such Person and (vii) all obligations under any Interest Rate
Protection Agreement, any Other Hedging Agreement or under any similar type of
agreement. Notwithstanding the foregoing, Indebtedness shall not include trade
payables and accrued expenses incurred by any Person in accordance with
customary practices and in the ordinary course of business of such Person.

          "Information Systems and Equipment" of any Person shall mean all
computer hardware, firmware and software, as well as other information
processing systems, or any equipment containing embedded microchips, whether
directly owned, licensed, leased, operated or otherwise controlled by such
Person, including through third-party service providers, and which, in whole or
in part, are used, operated, relied upon, or integral to, such Person's conduct
of its business.

          "Initial Borrowing Date" shall mean the date occurring on or after
the Effective Date on which the initial Borrowing of Loans occurs.

          "Initial Multiple Draw II Term Loan Borrowing Date" shall mean the
date occurring on or after the Multiple Draw I Term Loan Full Utilization Date
on which the initial Borrowing of Multiple Draw II Terms Loans occurs.

          "Intercompany Loan" shall have the meaning provided in Section
9.05(ix).


                                     -94-
<PAGE>   96

          "Intercompany Note" shall mean a promissory note, in the form of
Exhibit M, evidencing Intercompany Loans.

          "Interest Determination Date" shall mean, with respect to any
Eurodollar Loan, the second Business Day prior to the commencement of any
Interest Period relating to such Eurodollar Loan.

          "Interest Period" shall have the meaning provided in Section 1.09.

          "Interest Rate Protection Agreement" shall mean any interest rate
swap agreement, interest rate cap agreement, interest collar agreement,
interest rate hedging agreement or other similar agreement or arrangement.

          "Investments" shall have the meaning provided in Section 9.05.

          "Issuing Lender" shall mean BTCo.

          "L/C Supportable Obligations" shall mean (i) obligations of the
Borrower or any of its Subsidiaries with respect to workers compensation,
surety bonds and other similar statutory obligations and (ii) such other
obligations of the Borrower or any of its Subsidiaries as are reasonably
acceptable to the Issuing Lender and the Agents and otherwise permitted to
exist pursuant to the terms of this Agreement (other than obligations in
respect of the 11-1/4% Senior Subordinated Discount Notes, the 15% Senior
Discount Notes and the Vendor Financing Agreement).

          "Leaseholds" of any Person shall mean all the right, title and
interest of such Person as lessee or licensee in, to and under leases or
licenses of land, improvements and/or fixtures.

          "Lender" shall mean each financial institution listed on Schedule I,
as well as any Person that becomes a "Lender" hereunder pursuant to Section
1.13 or 13.04(b).

          "Lender Default" shall mean (i) the refusal (which has not been
retracted) or the failure of a Lender to make available its portion of any
Borrowing (including any Mandatory Borrowing) or to fund its portion of any
unreimbursed payment under Section 2.04(c) or (ii) a Lender having notified in
writing the Borrower and/or the Administrative Agent that such Lender does not
intend to comply with its obligations under Section 1.01 or 2.

          "Letter of Credit" shall have the meaning provided in Section
2.01(a).

          "Letter of Credit Fee" shall have the meaning provided in Section
3.01(e).

          "Letter of Credit Outstandings" shall mean, at any time, the sum of
(i) the Stated Amount of all outstanding Letters of Credit and (ii) the
aggregate amount of all Unpaid Drawings in respect of all Letters of Credit.

          "Letter of Credit Request" shall have the meaning provided in Section
2.03(a).


                                     -95-
<PAGE>   97

          "Leverage Ratio" shall mean, at any time, the ratio of (x)
Consolidated Indebtedness at such time to (y) the product of (i) Consolidated
EBITDA of the Borrower for the fiscal quarter of the Borrower most recently
ended and (ii) 4.

          "License Subsidiaries" shall mean PageMart II, Inc., PageMart PCS,
Inc. and PageMart Operations, Inc.

          "Lien" shall mean any mortgage, pledge, hypothecation, assignment,
deposit arrangement, encumbrance, lien (statutory or other), preference,
priority or other security agreement of any kind or nature whatsoever
(including, without limitation, any conditional sale or other title retention
agreement, any financing or similar statement or notice filed under the UCC or
any other similar recording or notice statute, and any lease having
substantially the same effect as any of the foregoing).

          "Loan" shall mean each Multiple Draw I Sub-Tranche A Term Loan, each
Multiple Draw I Sub-Tranche B Term Loan, each Multiple Draw I Sub-Tranche C
Term Loan, each Multiple Draw II Sub-Tranche A Term Loan, each Multiple Draw II
Sub-Tranche B Term Loan, each Revolving Loan and each Swingline Loan.

          "Majority Lenders" of any Tranche shall mean those Non-Defaulting
Lenders which would constitute the Required Lenders under, and as defined in,
this Agreement if all outstanding Obligations of the other Tranches under this
Agreement were repaid in full and all Commitments with respect thereto were
terminated.

          "Management Agreements" shall have the meaning provided in Section
5.05.

          "Mandatory Borrowing" shall have the meaning provided in Section
1.01(h).

          "Margin Reduction Period" shall mean each period which shall commence
on the date occurring after the Effective Date upon which the respective
officer's certificate is delivered pursuant to Section 8.01(f) and which shall
end on the date of actual delivery of the next officer's certificates pursuant
to Section 8.01(f) or the latest date on which such next officer's certificate
is required to be so delivered.

          "Margin Stock" shall have the meaning provided in Regulation U.

          "Maturity Date" shall mean with respect to any Tranche of Loans
(other than Swingline Loans), the Multiple Draw I/Revolver Maturity Date or the
respective Multiple Draw II Maturity Date, as the case may be.

          "Maximum Swingline Amount" shall mean $2,500,000.

          "Migrated Unit" shall mean any Advanced Messaging Unit placed into
service with any strategic partner of the Borrower or any of its Subsidiaries
to the extent, and only to the extent, such Advanced Messaging Unit is in
service at the time the respective deduction of such Advanced Messaging Unit is
to be made in accordance with the definition of Minimum Advanced Messaging
Units Amount contained herein or in Section 6.03(b).



                                     -96-
<PAGE>   98

          "Minimum Advanced Messaging Units Amount" shall mean, with respect to
any Borrowing of Loans to occur during a respective period set forth in clauses
(A), (B), (C), (D) or (E) below, the number of Advanced Messaging Units in
service set forth below under such clause (A), (B), (C), (D) or (E) less any
Migrated Units, in each case at the end of the then most recently ended fiscal
quarter of the Borrower:

          (A) at any time on or prior to December 31, 1999, 75,000;

          (B) at any time after December 31, 1999 and on or prior to March 31,
2000, 90,000;

          (C) at any time after March 31, 2000 and on or prior to June 30,
2000, 135,000;

          (D) at any time after June 30, 2000 and on or prior to September 30,
2000, 175,000; and

          (E) at any time after September 30, 2000, 217,500.

          "Minimum Borrowing Amount" shall mean (i) for Term Loans, $5,000,000,
(ii) for Revolving Loans, $1,000,000 and (iii) for Swingline Loans, $100,000.

          "MS Funds" shall mean, collectively, The Morgan Stanley Leveraged
Equity Fund II, L.P., Morgan Stanley Capital Partners, III, L.P. Morgan Stanley
Capital Investors, L.P., Morgan Stanley Venture Capital Fund, L.P., Morgan
Stanley Venture Capital Fund II, L.P., Morgan Stanley Venture Capital Fund II,
C.V., Morgan Stanley Venture Investors, L.P. and MSCP III 892 Investors, L.P.

          "MSSF" shall mean Morgan Stanley Senior Funding, Inc., in its
individual capacity, and any successor thereto by merger, consolidation or
otherwise.

          "Multiple Draw I/Revolver Maturity Date" shall mean June 30, 2003.

          "Multiple Draw I Sub-Tranche A Term Loan" shall have the meaning
provided in Section 1.01(a).

          "Multiple Draw I Sub-Tranche A Term Loan Commitment" shall mean, for
each Lender, the amount set forth opposite such Lender's name in Schedule I
directly below the column entitled "Multiple Draw I Sub-Tranche A Term Loan
Commitment," as same may be (x) terminated or reduced from time to time
pursuant to Sections 3.02, 3.03, 4.02 and/or 10 or (y) adjusted from time to
time as a result of assignments to or from such Lender pursuant to Sections
1.13 and/or 13.04(b).

          "Multiple Draw I Sub-Tranche A Term Loan Commitment Percentage" shall
mean, at any time, a fraction (expressed as a percentage) the numerator of
which is equal to the aggregate amount of Multiple Draw I Sub-Tranche A Term
Loan Commitments in existence at 


                                     -97-
<PAGE>   99

such time and the denominator of which is equal to the aggregate amount of all
Multiple Draw I Term Loan Commitments in existence at such time.

          "Multiple Draw I Sub-Tranche B Commitment Commission" shall have the
meaning provided in Section 3.01(a).

          "Multiple Draw I Sub-Tranche B Term Loan" shall have the meaning
provided in Section 1.01(b).

          "Multiple Draw I Sub-Tranche B Term Loan Borrowing Date" shall mean
each date on which a Borrowing of Multiple Draw I Sub-Tranche B Term Loans is
incurred pursuant to Section 1.01; provided that in no event shall any
Borrowing of Multiple Draw I Sub-Tranche B Term Loans be incurred after the
Multiple Draw I Term Loan Commitment Termination Date.

          "Multiple Draw I Sub-Tranche B Term Loan Commitment" shall mean, for
each Lender, the amount set forth opposite such Lender's name in Schedule I
directly below the column entitled "Multiple Draw I Sub-Tranche B Term Loan
Commitment," as same may be (x) terminated or reduced from time to time
pursuant to Sections 3.02, 3.03, 4.02 and/or 10 or (y) adjusted from time to
time as a result of assignments to or from such Lender pursuant to Sections
1.13 and/or 13.04(b).

          "Multiple Draw I Sub-Tranche B Term Loan Commitment Percentage" shall
mean, at any time, a fraction (expressed as a percentage) the numerator of
which is equal to the aggregate amount of Multiple Draw I Sub-Tranche B Term
Loan Commitments in existence at such time and the denominator of which is
equal to the aggregate amount of all Multiple Draw I Term Loan Commitments in
existence at such time.

          "Multiple Draw I Sub-Tranche C Commitment Commission" shall have the
meaning provided in Section 3.01(b).

          "Multiple Draw I Sub-Tranche C Term Loan" shall have the meaning
provided in Section 1.01(c).

          "Multiple Draw I Sub-Tranche C Term Loan Borrowing Date" shall mean
each date on which a Borrowing of Multiple Draw I Sub-Tranche C Term Loans is
incurred pursuant to Section 1.01; provided that in no event shall any
Borrowing of Multiple Draw I Sub-Tranche C Term Loans be incurred after the
Multiple Draw I Term Loan Commitment Termination Date.

          "Multiple Draw I Sub-Tranche C Term Loan Commitment" shall mean, for
each Lender, the amount set forth opposite such Lender's name in Schedule I
directly below the column entitled "Multiple Draw I Sub-Tranche C Term Loan
Commitment," as same may be (x) terminated or reduced from time to time
pursuant to Sections 3.02, 3.03, 4.02 and/or 10 or (y) adjusted from time to
time as a result of assignments to or from such Lender pursuant to Sections
1.13 and/or 13.04(b).

          "Multiple Draw I Sub-Tranche C Term Loan Commitment Percentage" shall
mean, at any time, a fraction (expressed as a percentage) the numerator of
which is equal to the 


                                     -98-
<PAGE>   100

aggregate amount of Multiple Draw I Sub-Tranche C Term Loan Commitments in
existence at such time and the denominator of which is equal to the aggregate
amount of all Multiple Draw I Term Loan Commitments in existence at such time.

          "Multiple Draw I Term Loan" shall have the meaning provided in
Section 1.01(c).

          "Multiple Draw I Term Loan Borrowing Date" shall mean each date on
which a Borrowing of Multiple Draw I Term Loans is incurred pursuant to Section
1.01; provided that in no event shall any Borrowing of Multiple Draw I Term
Loans be incurred after the Multiple Draw I Term Loan Commitment Termination
Date.

          "Multiple Draw I Term Loan Commitment Termination Date" shall mean
December 31, 2000.

          "Multiple Draw I Term Loan Full Utilization Date" shall mean that
date upon which Multiple Draw I Term Loans have theretofore been incurred and
the Total Multiple Draw I Term Loan Commitment has been terminated.

          "Multiple Draw I Term Loan Percentage" shall mean, at any time, a
fraction (expressed as a percentage) the numerator of which is equal to the
aggregate principal amount of all Multiple Draw I Term Loans outstanding at
such time and the denominator of which is equal to the aggregate principal
amount of all Term Loans outstanding at such time.

          "Multiple Draw I Term Loan Scheduled Repayment" shall have the
meaning provided in Section 4.02(b)(i).

          "Multiple Draw I Term Note" shall have the meaning provided in
Section 1.05(a).

          "Multiple Draw II Maturity Date" shall mean, with respect to any
Multiple Draw II Term Loans under a Multiple Draw II Term Loan Sub-Facility,
the maturity date for such Multiple Draw II Term Loans as provided in the
Multiple Draw II Term Loan Commitment Agreement relating thereto, subject to
the restrictions on maturity set forth in Section 1.14.

          "Multiple Draw II Sub-Tranche A Term Loan" shall have the meaning
provided in Section 1.01(d).

          "Multiple Draw II Sub-Tranche A Term Loan Borrowing Date" shall mean
each date on which a Borrowing of Multiple Draw II Sub-Tranche A Term Loans is
incurred pursuant to Section 1.01; provided that in no event shall any
Borrowing of Multiple Draw II Sub-Tranche A Term Loans be incurred after the
Multiple Draw II Term Loan Commitment Termination Date.

          "Multiple Draw II Sub-Tranche A Term Loan Commitment" shall mean, for
each Lender, any commitment to make Multiple Draw II Term Loans provided by
such Lender pursuant to Section 1.14, in such amount as agreed to by such
Lender in the respective Multiple Draw II Term Loan Commitment Agreement and as
set forth opposite such Lender's name on Schedule I hereto (as modified in
accordance with Section 1.14) directly below the column entitled "Multiple Draw
II Term Loan Commitment" as the same may be (x) terminated or 


                                     -99-
<PAGE>   101

reduced from time to time pursuant to Sections 3.02, 3.03, 4.02 and/or 10 or
(y) adjusted from time to time as a result of assignments to or from such
Lender pursuant to Sections 1.13 and/or 13.04(b).

          "Multiple Draw II Sub-Tranche A Term Loan Commitment Percentage"
shall mean, at any time, a fraction (expressed as a percentage) the numerator
of which is equal to the aggregate amount of Multiple Draw II Sub-Tranche A
Term Loan Commitments in existence at such time and the denominator of which is
equal to the aggregate amount of all Multiple Draw II Term Loan Commitments in
existence at such time.

          "Multiple Draw II Sub-Tranche B Term Loan" shall have the meaning
provided in Section 1.01(e).

          "Multiple Draw II Sub-Tranche B Term Loan Borrowing Date" shall mean
each date on which a Borrowing of Multiple Draw II Sub-Tranche B Term Loans is
incurred pursuant to Section 1.01; provided that in no event shall any
Borrowing of Multiple Draw II Sub-Tranche B Term Loans be incurred after the
Multiple Draw II Term Loan Commitment Termination Date.

          "Multiple Draw II Sub-Tranche B Term Loan Commitment" shall mean, for
each Lender, any commitment to make Multiple Draw II Term Loans provided by
such Lender pursuant to Section 1.14, in such amount as agreed to by such
Lender in the respective Multiple Draw II Term Loan Commitment Agreement and as
set forth opposite such Lender's name on Schedule I hereto (as modified in
accordance with Section 1.14) directly below the column entitled "Multiple Draw
II Term Loan Commitment" as the same may be (x) terminated or reduced from time
to time pursuant to Sections 3.02, 3.03, 4.02 and/or 10 or (y) adjusted from
time to time as a result of assignments to or from such Lender pursuant to
Sections 1.13 and/or 13.04(b).

          "Multiple Draw II Sub-Tranche B Term Loan Commitment Percentage"
shall mean, at any time, a fraction (expressed as a percentage) the numerator
of which is equal to the aggregate amount of Multiple Draw II Sub-Tranche B
Term Loan Commitments in existence at such time and the denominator of which is
equal to the aggregate amount of all Multiple Draw II Term Loan Commitments in
existence.

          "Multiple Draw II Term Loans" shall have the meaning provided in
Section 1.01(e).

          "Multiple Draw II Term Loan Borrowing Date" shall mean any date on
which a Borrowing of Multiple Draw II Term Loans are incurred pursuant to
Section 1.01, provided that in no event shall any Borrowings of Multiple Draw
II Term Loans be incurred prior to the Multiple Draw I Term Loan Full
Utilization Date.

          "Multiple Draw II Term Loan Commitment" shall mean, for each Lender,
the sum of the Multiple Draw II Sub-Tranche A Term Loan Commitment and the
Multiple Draw II Sub-Tranche B Term Loan Commitment of such Lender.


                                     -100-
<PAGE>   102

          "Multiple Draw II Term Loan Commitment Agreement" shall mean a
Multiple Draw Term Loan Commitment Agreement substantially in the form of
Exhibit C (appropriately completed).

          "Multiple Draw II Term Loan Commitment Date" shall mean each date
(which in no event shall occur after the Multiple Draw II Commitment
Termination Date) on which Multiple Draw II Term Loan Commitment Agreements are
delivered pursuant to Section 1.14.

          "Multiple Draw II Term Loan Commitment Termination Date" shall mean,
with respect to each Multiple Draw II Term Loan Sub-Facility, the respective
date specified as the Multiple Draw II Term Loan Commitment Termination Date in
the relevant Multiple Draw II Term Loan Commitment Agreement or Agreements.

          "Multiple Draw II Term Loan Lender" shall have the meaning provided
in Section 1.14.

          "Multiple Draw II Term Loan Percentage" shall mean, at any time, a
fraction (expressed as a percentage) the numerator of which is equal to the
aggregate principal amount of all Multiple Draw II Term Loans outstanding at
such time and the denominator of which is equal to the aggregate principal
amount of all Term Loans outstanding at such time.

          "Multiple Draw II Term Loan Scheduled Repayment" shall have the
meaning provided in Section 4.02(b)(ii).

          "Multiple Draw II Term Loan Sub-Facility" shall mean a sub-facility
under the facility evidenced by the Total Multiple Draw II Term Loan Commitment
relating to the commitments of one or more Lenders to make a Multiple Draw II
Term Loan or Multiple Draw II Term Loans under such sub-facility having
identical interest rates, maturities and scheduled amortizations.

          "Multiple Draw II Term Note" shall have the meaning provided in
Section 1.05(a).

          "NAIC" shall mean the National Association of Insurance
Commissioners.

          "Net Debt Proceeds" shall mean, with respect to any incurrence of
Indebtedness for borrowed money, the cash proceeds (net of underwriting
discounts and commissions and other reasonable costs associated therewith)
received by the respective Person from the respective incurrence of such
Indebtedness for borrowed money.

          "Net Equity Proceeds" shall mean, with respect to each issuance or
sale of any equity by any Person or any capital contribution to such Person,
the cash proceeds (net of underwriting discounts and commissions and other
reasonable costs associated therewith) received by such Person from the
respective sale or issuance of its equity or from the respective capital
contribution; provided that, in the event the Borrower receives Net Equity
Proceeds (as calculated above without regard to this proviso) in excess of
$100,000,000 pursuant to any sale or issuance of its equity, to the extent (and
only to the extent) that the terms of the Vendor Financing Agreement require
any Net Equity Proceeds from such sale or issuance in excess of 


                                     -101-
<PAGE>   103

$100,000,000 to be applied to repay outstanding Indebtedness thereunder
pursuant to Section 1.3(c) thereof, the Borrower may make such required
repayments and the aggregate amount so applied as required by Section 1.3(c) of
the Vendor Financing Agreement shall be excluded from Net Equity Proceeds (and
to the extent otherwise reflected therein, shall be deducted in determining the
amount of Net Equity Proceeds received by the Borrower).

          "Net Insurance Proceeds" shall mean, with respect to any Recovery
Event, the cash proceeds (net of reasonable costs and taxes incurred in
connection with such Recovery Event (including required payments of
Indebtedness under the Vendor Financing Agreement) and excluding any cash
proceeds received in connection with such Recovery Event from any business
interruption insurance) received by the respective Person in connection with
such Recovery Event.

          "Net Sale Proceeds" shall mean, for any Asset Sale, the gross cash
proceeds (including any cash received by way of deferred payment pursuant to a
promissory note, receivable or otherwise, but only as and when received)
received from such sale of assets, net of the reasonable costs of such sale
(including fees and commissions, payments of unassumed liabilities relating to
the assets sold and required payments of any Indebtedness (including
Indebtedness under the Vendor Financing Agreement but other than Indebtedness
secured pursuant to the Security Documents) which is secured by the respective
assets which were sold), and the incremental taxes paid or payable as a result
of such Asset Sale.

          "Non-Compete Agreement" shall have the meaning provided in Section
5.05.

          "Non-Defaulting Lender" and "Non-Defaulting RL Lender" shall mean and
include each Lender or RL Lender, as the case may be, other than a Defaulting
Lender.

          "Non-Guarantor Subsidiaries" shall mean (i) on and after the Initial
Borrowing Date, each of:

          PageMart PCS, Inc.
          PageMart International, Inc.
          PageMart II, Inc.
          PageMart Operations, Inc.
          PageMart California, Inc.
          PageMart Operations, Inc. of Virginia
          Telephone North, Inc.;

and (ii) after the Initial Borrowing Date, any additional Domestic Subsidiary
of the Borrower established or created which at the time of such establishment
or creation has assets (excluding any assets constituting Investments of such
Domestic Subsidiary in a Foreign Person to the extent such Investments are
permitted under Section 9.05(xi) or (xiii)) with an aggregate book value or
fair market value (as determined in good faith by Borrower), whichever is
greater, equal to or less than of $500,000, provided that no such Domestic
Subsidiary shall constitute a Non-Guarantor Subsidiary if at the time of the
establishment or creation thereof (x) the aggregate book value or fair market
value (as determined in good faith by the Borrower), whichever is greater, of
the


                                     -102-
<PAGE>   104

consolidated assets of all Non-Guarantor Subsidiaries (excluding for this
purpose (i) any assets constituting Investments of any such Non-Guarantor
Subsidiary in a Foreign Person to the extent in existence on the Effective Date
or permitted under Section 9.05(xi) or (xiii), (ii) Foreign Subsidiaries, and
(iii) the License Subsidiaries) is equal to or in excess of $1,000,000 or (y)
that portion of Consolidated EBITDA attributable to all such Non-Guarantor
Subsidiaries (including for this purpose the License Subsidiaries but excluding
(i) Foreign Subsidiaries and (ii) the Consolidated EBITDA attributable to any
Foreign Person unless such Consolidated EBITDA is distributed or paid to the
Borrower or one of its Domestic Subsidiaries) for the Test Period of the
Borrower then most recently ended is equal to or exceeds $500,000.
Notwithstanding anything to the contrary contained above, (A) at any time when
the assets (excluding any assets constituting Investments of a Domestic
Subsidiary in a Foreign Person, to the extent in existence on the Effective
Date or permitted under Section 9.05(xi) or (xiii)) of any Domestic Subsidiary
(other than a License Subsidiary) theretofore constituting a Non-Guarantor
Subsidiary exceed $500,000 or the Consolidated EBITDA attributable to such
Non-Guarantor Subsidiary (excluding the Consolidated EBITDA attributable to any
Foreign Person unless such Consolidated EBITDA is distributed or paid to the
Borrower or one of its Domestic Subsidiaries) for the Test Period of the
Borrower most recently ended exceeds $250,000, in either such case, such
Subsidiary shall automatically cease to constitute a Non-Guarantor Subsidiary,
(B) at any time when the consolidated assets of all Non-Guarantor Subsidiaries
(excluding for this purpose (i) any assets constituting Investments of any such
Non-Guarantor Subsidiary in a Foreign Person, to the extent in existence on the
Effective Date or permitted under Section 9.05(xi) or (xiii), (ii) Foreign
Subsidiaries and (iii) the License Subsidiaries) exceed $1,000,000 or that
portion of Consolidated EBITDA for all such Non-Guarantor Subsidiaries
(including for this purpose the License Subsidiaries but excluding (i) Foreign
Subsidiaries and (ii) the Consolidated EBITDA attributable to any Foreign
Person unless such Consolidated EBITDA is distributed or paid to the Borrower
or one of its Domestic Subsidiaries) for the Test Period of the Borrower then
most recently ended exceeds $500,000, one or more Domestic Subsidiaries (other
than the License Subsidiaries) which theretofore constituted Non-Guarantor
Subsidiaries (as designated by Borrower or, in the absence of any such
designation, as designated by the Administrative Agent) shall cease to
constitute Non-Guarantor Subsidiaries, so that either (x) the thresholds
described above in this clause (B) are not exceeded or (y) if the thresholds
described above in this clause (B) are exceeded, all Domestic Subsidiaries
(other than the License Subsidiaries) shall have become Guarantor Subsidiaries,
and (C) the Borrower may, in its discretion, at any time, by giving written
notice to the Administrative Agent, designate a Domestic Subsidiary as no
longer constituting a Non-Guarantor Subsidiary (in which case such Domestic
Subsidiary shall no longer constitute a Non-Guarantor Subsidiary).

          "Non-U.S. Person" shall mean any Person that is incorporated or
organized under the laws of, or that is a citizen of, any jurisdiction other
than the United States of America or any State thereof, but excluding any
territory thereof.

          "Note" shall mean each Multiple Draw I Term Note, each Multiple Draw
II Term Note, each Revolving Note and the Swingline Note.

          "Notice of Borrowing" shall have the meaning provided in Section
1.03(a).

          "Notice of Conversion" shall have the meaning provided in Section
1.06.



                                     -103-
<PAGE>   105

          "Notice Office" shall mean the office of the Administrative Agent
located at One Bankers Trust Plaza, 130 Liberty Street, New York, New York
10006, Attention: Larry Benison or such other office as the Administrative
Agent may hereafter designate in writing as such to the other parties hereto.

          "Obligations" shall mean all amounts owing to any Agent, the
Collateral Agent, the Issuing Lender or any Lender pursuant to the terms of
this Agreement or any other Credit Document.

          "Other Hedging Agreement" shall mean any foreign exchange contracts,
currency swap agreements, commodity agreements or other similar agreements or
arrangements designed to protect against the fluctuations in currency values.

          "PageMart Canada" shall mean PageMart Canada Holdings, Ltd.

          "Participant" shall have the meaning provided in Section 2.04(a).

          "Payment Office" shall mean the office of the Administrative Agent
located at One Bankers Trust Plaza, 130 Liberty Street, New York, New York
10006, or such other office as the Administrative Agent may hereafter designate
in writing as such to the other parties hereto.

          "PBGC" shall mean the Pension Benefit Guaranty Corporation
established pursuant to Section 4002 of ERISA, or any successor thereto.

          "Permitted Liens" shall have the meaning provided in Section 9.01.

          "Person" shall mean any individual, partnership, joint venture, firm,
corporation, association, limited liability company, trust or other enterprise
or any government or political subdivision or any agency, department or
instrumentality thereof.

          "Plan" shall mean any pension plan as defined in Section 3(2) of
ERISA, which is maintained or contributed to by (or to which there is an
obligation to contribute of) the Borrower or a Subsidiary of the Borrower or an
ERISA Affiliate, and each such plan for the five year period immediately
following the latest date on which the Borrower, or a Subsidiary of the
Borrower or an ERISA Affiliate maintained, contributed to or had an obligation
to contribute to such plan.

          "Pledge Agreement" shall have the meaning provided in Section 5.09.

          "Pledge Agreement Collateral" shall mean all "Collateral" as defined
in the Pledge Agreement.

          "Pledgee" shall have the meaning provided in the Pledge Agreement.

          "Prime Lending Rate" shall mean the rate which BTCo announces from
time to time as its prime lending rate, the Prime Lending Rate to change when
and as such prime lending rate changes. The Prime Lending Rate is a reference
rate and does not necessarily represent the 


                                     -104-
<PAGE>   106

lowest or best rate actually charged to any customer. BTCo may make commercial
loans or other loans at rates of interest at, above or below the Prime Lending
Rate.

          "Projections" shall mean the projections, dated as of February, 1999,
which were prepared by or on behalf of the Borrower in connection with this
Agreement and delivered to each Agent and the Lenders prior to the Initial
Borrowing Date.

          "Qualified Preferred Stock" shall mean any preferred stock of the
Borrower so long as the terms (including any covenants) of any such preferred
stock (w) do not contain any mandatory put, redemption, repayment, sinking fund
or other similar provision occurring prior to one year after the later of (i)
the Multiple Draw I/Revolver Maturity Date and (ii) the latest Multiple Draw II
Maturity Date in effect at the time of the establishment of the terms of such
preferred stock, (x) do not require the cash payment of dividends, (y) do not
grant the holders thereof any voting rights except for (i) voting rights
required to be granted to such holders under applicable law and (ii) limited
customary voting rights on fundamental matters such as mergers, consolidations,
sales of all or substantially all of the assets of the Borrower, or
liquidations involving the Borrower and (z) are otherwise reasonably
satisfactory to the Agents.

          "Qualified Proceeds" shall mean any of the following or any
combination of the following: (i) Cash Equivalents, (ii) assets used or useful
in the businesses referred to in Section 9.14(a) and (iii) the capital stock
of, or other debt or equity interest in, any Person to the extent, and only to
the extent, such Investment is permitted under Section 9.05.

          "Quarterly Payment Date" shall mean the last Business Day of each
March, June, September and December occurring after the Initial Borrowing Date,
commencing on March 31, 1999.

          "RCRA" shall mean the Resource Conservation and Recovery Act, as the
same may be amended from time to time, 42 U.S.C.ss. 6901 et seq. -- ----

          "Real Property" of any Person shall mean all the right, title and
interest of such Person in and to land, improvements and fixtures, including
Leaseholds.

          "Recovery Event" shall mean the receipt by the Borrower or any of its
Subsidiaries of any cash insurance proceeds other than cash proceeds received
from business interruption insurance or condemnation awards payable (i) by
reason of theft, loss, physical destruction, damage, taking or any other
similar event with respect to any property or assets of the Borrower or any of
its Subsidiaries and (ii) under any policy of insurance required to be
maintained under Section 8.03, provided that no event set forth in preceding
clauses (i) or (ii) shall be a Recovery Event unless the aggregate proceeds
received from, or with respect to, such amount exceeds $2,500,000.

          "Register" shall have the meaning provided in Section 13.15.

          "Regulation D" shall mean Regulation D of the Board of Governors of
the Federal Reserve System as from time to time in effect and any successor to
all or a portion thereof establishing reserve requirements.


                                     -105-
<PAGE>   107

          "Regulation T" shall mean Regulation T of the Board of Governors of
the Federal Reserve System as from time to time in effect and any successor to
all or a portion thereof.

          "Regulation U" shall mean Regulation U of the Board of Governors of
the Federal Reserve System as from time to time in effect and any successor to
all or a portion thereof.

                       "Regulation X" shall mean Regulation X of the Board of
Governors of the Federal Reserve System as from time to time in effect and any
successor to all or a portion thereof.

          "Release" shall mean the disposing, discharging, injecting, spilling,
pumping, leaking, leaching, dumping, emitting, escaping, emptying, pouring or
migrating, into or upon any land or water or air, or otherwise entering into
the environment.

          "Replaced Lender" shall have the meaning provided in Section 1.13.

          "Replacement Lender" shall have the meaning provided in Section 1.13.

          "Replacement Senior Note Documents" shall mean the Replacement Senior
Notes and each other document or agreement relating to the issuance of the
Replacement Senior Notes.

          "Replacement Senior Notes" shall mean an issue of notes (senior or
subordinated) issued by the Borrower pursuant to Section 9.04(ix) to refinance
in full the 15% Senior Discount Notes.

          "Replacement Senior Subordinated Note Documents" shall mean the
Replacement Senior Subordinated Notes and each other document or agreement
relating to the issuance of the Replacement Senior Subordinated Notes.

          "Replacement Senior Subordinated Notes" shall mean an issue of
subordinated notes issued by the Borrower pursuant to Section 9.04(x) to
refinance in full the 11 1/4% Senior Subordinated Discount Notes.

          "Reportable Event" shall mean an event described in Section 4043(c)
of ERISA with respect to a Plan that is subject to Title IV of ERISA other than
those events as to which the 30-day notice period is waived under subsection
 .22, .23, .25, .27, .28 or .29(c), .29(1) or .29(2) of PBGC Regulation Section
4043.

          "Required Lenders" shall mean Lenders constituting both (A)
Non-Defaulting Lenders the sum of whose outstanding Term Loans (and, if
outstanding, Multiple Draw I Term Loan Commitments or Multiple Draw II Term
Loan Commitments, as the case may be) and Revolving Loan Commitments (or after
the termination thereof, outstanding Revolving Loans and RL Percentages of (x)
outstanding Swingline Loans and (y) Letter of Credit Outstandings) represent at
least 50.1% of the sum of (i) all outstanding Term Loans (and, if outstanding,
Multiple Draw I Term Loan Commitments or Multiple Draw II Term Loan
Commitments, as the case may be) of Non-Defaulting Lenders and (ii) the Total
Revolving Loan Commitment less the Revolving Loan Commitments of all Defaulting
Lenders (or after the termination thereof, the sum of the then total
outstanding Revolving Loans of Non-Defaulting Lenders and the aggregate RL


                                     -106-
<PAGE>   108

Percentages of all Non-Defaulting Lenders of the total (x) outstanding
Swingline Loans and (y) Letter of Credit Outstandings at such time) and (B)
those Non-Defaulting Lenders which would be required for such Lenders to
constitute the Required Lenders under clause (A) above if all Multiple Draw II
Term Loan Commitments were deemed to be zero (but including in any such
calculation any then outstanding Multiple Draw II Term Loans); provided that
for purposes of exercising any rights of the Required Lenders pursuant to
Section 10 of this Agreement at any time when an Event of Default is in
existence, those Non-Defaulting Lenders described in either clause (A) or (B)
above shall constitute Required Lenders pursuant to this definition.

          "Revolving Loan" shall have the meaning provided in Section 1.01(f).

          "Revolving Loan Commitment" shall mean, for each Lender, the amount
set forth opposite such Lender's name in Schedule I directly below the column
entitled "Revolving Loan Commitment," as same may be (x) reduced from time to
time pursuant to Sections 3.02, 3.03 and/or 10 or (y) adjusted from time to
time as a result of assignments to or from such Lender pursuant to Section 1.13
or 13.04(b).

          "Revolving Note" shall have the meaning provided in Section 1.05(a).

          "RL Commitment Commission" shall have the meaning provided in Section
3.01(c).

          "RL Lender" shall mean each Lender with a Revolving Loan Commitment
or with outstanding Revolving Loans.

          "RL Percentage" of any RL Lender at any time shall mean a fraction
(expressed as a percentage) the numerator of which is the Revolving Loan
Commitment of such RL Lender at such time and the denominator of which is the
Total Revolving Loan Commitment at such time, provided that if the RL
Percentage of any Lender is to be determined after the Total Revolving Loan
Commitment has been terminated, then the RL Percentages of such RL Lender shall
be determined immediately prior (and without giving effect) to such
termination.

          "Scheduled Repayments" shall have the meaning provided in Section
4.02(b)(ii).

          "SEC" shall have the meaning provided in Section 8.01(h).

          "Section 4.04(b)(ii) Certificate" shall have the meaning provided in
Section 4.04(b)(ii).

          "Secured Creditors" shall have the meaning assigned that term in the
respective Security Documents.

          "Securities Act" shall mean the Securities Act of 1933, as amended,
and the rules and regulations promulgated thereunder.

          "Security Agreement" shall have the meaning provided in Section 5.10.


                                     -107-
<PAGE>   109

          "Security Agreement Collateral" shall mean all "Collateral" as
defined in the Security Agreement.

          "Security Document" shall mean and include each of the Security
Agreement, the Pledge Agreement and, after the execution and delivery thereof,
each Additional Security Document.

          "Senior Officer" shall mean the Chief Executive Officer, President,
Chief Financial Officer, Treasurer, Assistant Treasurer or Controller or any
other senior officer of the Borrower or any of its Subsidiaries with knowledge
of, or responsibility for, the financial affairs of such Person.

          "Shareholders' Agreements" shall have the meaning provided in Section
5.05. "Start Date" shall mean, with respect to any Margin Reduction Period, the
first day of such Margin Reduction Period.

          "Stated Amount" of each Letter of Credit shall mean, at any time, the
maximum amount available to be drawn thereunder (in each case determined
without regard to whether any conditions to drawing could then be met).

          "Subsidiaries Guaranty" shall have the meaning provided in Section
9.16(a).

          "Subsidiary" shall mean, as to any Person, (i) any corporation more
than 50% of whose stock of any class or classes having by the terms thereof
ordinary voting power to elect a majority of the directors of such corporation
(irrespective of whether or not at the time stock of any class or classes of
such corporation shall have or might have voting power by reason of the
happening of any contingency) is at the time owned by such Person and/or one or
more Subsidiaries of such Person and (ii) any partnership, limited liability
company, association, joint venture or other entity in which such Person and/or
one or more Subsidiaries of such Person has more than a 50% equity interest at
the time , except that any Person described in this clause (ii) which is
organized under the laws of a jurisdiction other than the United States or any
state or territory thereof (each a "Foreign Person") shall not constitute a
Subsidiary if the Borrower and its other Subsidiaries do not have the right to
elect a majority of the directors (or similar Persons under applicable law) of
such Foreign Person and do not otherwise own or have the right to exercise
majority voting control over the actions of such Foreign Person.

          "Subsidiary Guarantor" shall mean each Subsidiary of the Borrower
which executes and delivers a counterpart of the Subsidiary Guaranty.

          "Supermajority Lenders" shall mean (x) in the case of references to
holders of Multiple Draw I Term Loans, those Non-Defaulting Lenders which would
constitute the Required Lenders under, and as defined in, this Agreement if (x)
all outstanding Obligations (other than those with respect to Multiple Draw I
Term Loans) under this Agreement were repaid in full and all Commitments with
respect to such other Obligations were terminated and (y) the percentage
"50.1%" contained therein were changed to "66-2/3%" and (y) in cases where
references are to holders of Multiple Draw II Term Loans, those Non-Defaulting
Lenders which would constitute 


                                     -108-
<PAGE>   110

the Required Lenders under, and as defined in, this Agreement if (x) all
outstanding Obligations (other than those relating to Multiple Draw II Term
Loans) under this Agreement were repaid in full and all Commitments with
respect to such other Obligations were terminated and (y) the percentage
"50.1%" contained therein were changed to "66-2/3%".

          "Swingline Expiry Date" shall mean that date which is five Business
Days prior to the Maturity Date.

          "Swingline Lender" shall mean BTCo.

          "Swingline Loan" shall have the meaning provided in Section 1.01(g).

          "Swingline Note" shall have the meaning provided in Section 1.05(a).

          "Syndication Agent" shall mean MSSF in its capacity as Syndication
Agent for the Lenders hereunder.

          "Syndication Date" shall mean that date upon which the Administrative
Agent determines (and notifies the Borrower) that the primary syndication (and
resultant addition of Persons as Lenders pursuant to Section 13.04(b)) has been
completed.

          "Tax Benefit" shall have the meaning provided in Section 4.04(c).

          "Taxes" shall have the meaning provided in Section 4.04(a).

          "Term Loans" shall mean each Multiple Draw I Term Loan and each
Multiple Draw II Term Loan.

          "Test Date" shall mean, with respect to any Margin Reduction Period,
the fiscal quarter of the Borrower most recently ended for which financial
statements pursuant to Section 8.01(b) or (c) are available (or are required to
be available in accordance with said Sections).

          "Test Period" shall mean each period of four consecutive fiscal
quarters of the Borrower then last ended (in each case taken as one accounting
period).

          "Total Available Revolving Loan Commitment" shall mean (x) at all
times prior to the first date on which the number of Advanced Messaging Units
in service by the Borrower exceeds 15,000, the lesser of (i) $10,000,000 and
(ii) the Total Revolving Loan Commitment and (y) thereafter, the Total
Revolving Loan Commitment.

          "Total Commitment" shall mean, at any time, the sum of the
Commitments of each of the Lenders.

          "Total Multiple Draw I Sub-Tranche A Term Loan Commitment" shall
mean, at any time, the sum of the Multiple Draw I Sub-Tranche A Term Loan
Commitments of each of the Lenders.


                                     -109-
<PAGE>   111

          "Total Multiple Draw I Sub-Tranche B Term Loan Commitment" shall
mean, at any time, the sum of the Multiple Draw I Sub-Tranche B Term Loan
Commitments of each of the Lenders.

          "Total Multiple Draw I Sub-Tranche C Term Loan Commitment" shall
mean, at any time, the sum of the Multiple Draw I Sub-Tranche C Term Loan
Commitments of each of the Lenders.

          "Total Multiple Draw I Term Loan Commitment" shall mean, at any time,
the sum of the Multiple Draw I Term Loan Commitments of each of the Lenders.

          "Total Multiple Draw II Sub-Tranche A Term Loan Commitment" shall
mean, at any time, the sum of the Multiple Draw II Sub-Tranche A Term Loan
Commitments of each of the Lenders.

          "Total Multiple Draw II Sub-Tranche B Term Loan Commitment" shall
mean, at any time, the sum of the Multiple Draw II Sub-Tranche B Term Loan
Commitments of each of the Lenders.

          "Total Multiple Draw II Term Loan Commitment" shall mean, at any
time, the sum of the Multiple Draw II Term Loan Commitments of each of the
Lenders.

          "Total Revolving Loan Commitment" shall mean, at any time, the sum of
the Revolving Loan Commitments of each of the Lenders.

          "Total Unutilized Revolving Loan Commitment" shall mean, at any time,
an amount equal to the remainder of (x) the Total Revolving Loan Commitment
then in effect less (y) the sum of the aggregate principal amount of all
Revolving Loans and Swingline Loans then outstanding plus the then aggregate
amount of all Letter of Credit Outstandings.

          "Traditional Messaging Services" shall mean the Borrower's and its
Subsidiaries' wireless messaging services relating to one-way pagers held by
their respective subscribers for such services.

          "Tranche" shall mean the respective facility and commitments utilized
in making Loans hereunder, with there being seven separate Tranches, i.e.,
Multiple Draw I Sub-Tranche A Term Loans, Multiple Draw I Sub-Tranche B Term
Loans, Multiple Draw I Sub-Tranche C Term Loans, Multiple Draw II Sub-Tranche A
Term Loans, Multiple Draw II Sub-Tranche B Term Loans, Revolving Loans and
Swingline Loans.

          "Type" shall mean the type of Loan determined with regard to the
interest option applicable thereto, i.e., whether a Base Rate Loan or a
Eurodollar Loan.

          "UCC" shall mean the Uniform Commercial Code as from time to time in
effect in the relevant jurisdiction.


                                     -110-
<PAGE>   112

          "Unfunded Current Liability" of any Plan shall mean the amount, if
any, by which the actuarial present value of the accumulated plan benefits
under the Plan as of the close of its most recent plan year determined in
accordance with actuarial assumptions at such time consistent with Statement of
Financial Accounting Standards No. 87, exceeds the fair market value of all
plan assets allocable thereto.

          "United States" and "U.S." shall each mean the United States of
America.

          "Unpaid Drawing" shall have the meaning provided for in Section
2.05(a).

          "Unutilized Revolving Loan Commitment" shall mean, with respect to
any Lender at any time, such Lender's Revolving Loan Commitment at such time
less the sum of (i) the aggregate outstanding principal amount of all Revolving
Loans made by such Lender at such time and (ii) such Lender's RL Percentage of
the Letter of Credit Outstandings at such time.

          "Vendor Financing Agreement" shall mean that certain $30,000,000
Promissory Note and Security Agreement, dated March 21, 1997, between the
Borrower and Glenayre.

          "VFA Amendment" shall mean an Amendment to the Vendor Financing
Agreement in form and substance satisfactory to the Agents (which form has been
agreed upon by the Agents and the Borrower prior to the Initial Borrowing
Date), which Amendment shall, inter alia, (i) provide that the Collateral Agent
may retain a second priority perfected security interest in the "Collateral"
under, and as defined in, the Vendor Financing Agreement, (ii) amend the asset
sales covenant contained therein and (iii) amend the prohibition on guarantees
contained therein to permit any Subsidiary of the Borrower to enter into the
Subsidiaries Guaranty in accordance with this Agreement.

          "Weighted Average Life to Maturity" shall mean, when applied to any
Indebtedness at any date, the number of years obtained by dividing (i) the then
outstanding principal amount of such Indebtedness into (ii) the total of the
product obtained by multiplying (x) the amount of each then remaining
installment or other required scheduled payments of principal, including
payment at final maturity, in respect thereof, by (y) the number of years
(calculated to the nearest one-twelfth) that will elapse between such date and
the making of such payment.

          "Wholly-Owned Subsidiary" shall mean, as to any Person, (i) any
corporation 100% of whose capital stock (other than director's qualifying
shares) is at the time owned by such Person and/or one or more Wholly-Owned
Subsidiaries of such Person and (ii) any partnership, limited liability
company, association, joint venture or other entity in which such Person and/or
one or more Wholly-Owned Subsidiaries of such Person has a 100% equity interest
at such time.

          "Wholly-Owned Subsidiary Guarantors" shall mean, at any time, each
Subsidiary Guarantor which is a Wholly-Owned Subsidiary of the Borrower at such
time.

          "Year 2000 Compliant" shall mean that all of the Borrower's and its
Subsidiaries' Information Systems and Equipment accurately process date data
(including, but not limited to, calculating, comparing and sequencing) before,
during and after the year 2000, as well as same and multi-century dates, or
between the years 1999 and 2000, taking into account all leap years,


                                     -111-
<PAGE>   113

including the fact that the year 2000 is a leap year, and further, that when
generally used in combination with, or interfacing with, Information Systems
and Equipment of other Persons having compatible Information System and
Equipment, shall accurately accept, release and exchange date data, and shall
in all material respects continue to function in the same manner as it performs
today and shall not otherwise impair the accuracy or functionality of the
Borrower's or any of its Subsidiaries' Information Systems and Equipment.

          SECTION 12. The Agents.

          12.01 Appointment. The Lenders hereby irrevocably designate BTCo as
Administrative Agent (for purposes of this Section 12, the term "Administrative
Agent" also shall include BTCo in its capacity as (x) Collateral Agent pursuant
to the Security Documents and (y) a Co-Arranger hereunder) to act as specified
herein and in the other Credit Documents. The Lenders hereby irrevocably
designate MSSF as Syndication Agent (for purposes of this Section 12, the term
"Syndication Agent" also shall include MSSF as a Co-Arranger hereunder) to act
as specified herein and in the other Credit Documents. Each Lender hereby
irrevocably authorizes, and each holder of any Note by the acceptance of such
Note shall be deemed irrevocably to authorize, the Administrative Agent and the
Syndication Agent to take such action on their behalf under the provisions of
this Agreement, the other Credit Documents and any other instruments and
agreements referred to herein or therein and to exercise such powers and to
perform such duties hereunder and thereunder as are specifically delegated to
or required of the Administrative Agent and the Syndication Agent by the terms
hereof and thereof and such other powers as are reasonably incidental thereto.
The Administrative Agent and the Syndication Agent may perform any of their
respective duties hereunder by or through its officers, directors, agents,
employees or affiliates.

          12.02 Nature of Duties. Neither the Administrative Agent nor the
Syndication Agent shall have any duties or responsibilities except those
expressly set forth in this Agreement and in the other Credit Documents.
Neither the Administrative Agent, the Syndication Agent nor any of their
respective officers, directors, agents, employees or affiliates shall be liable
for any action taken or omitted by them hereunder or under any other Credit
Document or in connection herewith or therewith, unless caused by its or their
gross negligence or willful misconduct. The duties of the Administrative Agent
and the Syndication Agent shall be mechanical and administrative in nature;
neither the Administrative Agent nor the Syndication Agent shall have by reason
of this Agreement or any other Credit Document a fiduciary relationship in
respect of any Lender or the holder of any Note; and nothing in this Agreement
or any other Credit Document, expressed or implied, is intended to or shall be
so construed as to impose upon the Administrative Agent or the Syndication
Agent any obligations in respect of this Agreement or any other Credit Document
except as expressly set forth herein or therein.

          12.03 Lack of Reliance on the Agents. Independently and without
reliance upon the Administrative Agent or the Syndication Agent, each Lender
and the holder of each Note, to the extent it deems appropriate, has made and
shall continue to make (i) its own independent investigation of the financial
condition and affairs of the Borrower and its Subsidiaries in connection with
the making and the continuance of the Loans and the taking or not taking of any
action in connection herewith and (ii) its own appraisal of the
creditworthiness of the Borrower 


                                     -112-
<PAGE>   114

and its Subsidiaries and, except as expressly provided in this Agreement,
neither the Administrative Agent nor the Syndication Agent shall have any duty
or responsibility, either initially or on a continuing basis, to provide any
Lender or the holder of any Note with any credit or other information with
respect thereto, whether coming into its possession before the making of the
Loans or at any time or times thereafter. Neither the Administrative Agent nor
the Syndication Agent shall be responsible to any Lender or the holder of any
Note for any recitals, statements, information, representations or warranties
herein or in any document, certificate or other writing delivered in connection
herewith or for the execution, effectiveness, genuineness, validity,
enforceability, perfection, collectibility, priority or sufficiency of this
Agreement or any other Credit Document or the financial condition of the
Borrower or any of its Subsidiaries or be required to make any inquiry
concerning either the performance or observance of any of the terms, provisions
or conditions of this Agreement or any other Credit Document, or the financial
condition of the Borrower or any of its Subsidiaries or the existence or
possible existence of any Default or Event of Default.

          12.04 Certain Rights of the Agents. If either Agent shall request
instructions from the Required Lenders with respect to any act or action
(including failure to act) in connection with this Agreement or any other
Credit Document, such Agent shall be entitled to refrain from such act or
taking such action unless and until such Agent shall have received instructions
from the Required Lenders; and such Agent shall not incur liability to any
Lender by reason of so refraining. Without limiting the foregoing, no Lender or
the holder of any Note shall have any right of action whatsoever against any
Agent as a result of such Agent acting or refraining from acting hereunder or
under any other Credit Document in accordance with the instructions of the
Required Lenders.

          12.05 Reliance. Each Agent shall be entitled to rely, and shall be
fully protected in relying, upon any note, writing, resolution, notice,
statement, certificate, telex, teletype or telecopier message, cablegram,
radiogram, order or other document or telephone message signed, sent or made by
any Person that such Agent believed to be the proper Person, and, with respect
to all legal matters pertaining to this Agreement and any other Credit Document
and its duties hereunder and thereunder, upon advice of counsel selected by
such Agent.

          12.06 Indemnification. To the extent any Agent is not reimbursed and
indemnified by the Borrower or any of its Subsidiaries, the Lenders will
reimburse and indemnify such Agent in proportion to their respective
"percentage" as used in determining the Required Lenders (determined as if
there were no Defaulting Lenders) for and against any and all liabilities,
obligations, losses, damages, penalties, claims, actions, judgments, costs,
expenses or disbursements of whatsoever kind or nature which may be imposed on,
asserted against or incurred by such Agent in performing its duties hereunder
or under any other Credit Document or in any way relating to or arising out of
this Agreement or any other Credit Document; provided that no Lender shall be
liable for any portion of such liabilities, obligations, losses, damages,
penalties, actions, judgments, suits, costs, expenses or disbursements
resulting from such Agent's gross negligence or willful misconduct (as finally
determined by a court of competent jurisdiction).


                                     -113-
<PAGE>   115

          12.07 Each Agent in its Individual Capacity. With respect to its
obligation to make Loans, or issue or participate in Letters of Credit, under
this Agreement, each Agent shall have the rights and powers specified herein
for a "Lender" and may exercise the same rights and powers as though it were
not performing the duties specified herein; and the term "Lender," "Required
Lenders," "Majority Lenders," "Supermajority Lenders," "holders of Notes" or
any similar terms shall, unless the context clearly otherwise indicates,
include such Agent in its respective individual capacities. Each Agent and its
affiliates may accept deposits from, lend money to, and generally engage in any
kind of banking, investment banking, trust or other business with, or provide
debt financing, equity capital or other services (including financial advisory
services) to, any Credit Party or any Affiliate of any Credit Party (or any
Person engaged in a similar business with any Credit Party or any Affiliate
thereof) as if they were not performing the duties specified herein, and may
accept fees and other consideration from any Credit Party or any Affiliate of
any Credit Party for services in connection with this Agreement and otherwise
without having to account for the same to the Lender.

          12.08 Holders. The Administrative Agent may deem and treat the payee
of any Note as the owner thereof for all purposes hereof unless and until a
written notice of the assignment, transfer or endorsement thereof, as the case
may be, shall have been filed with the Administrative Agent. Any request,
authority or consent of any Person who, at the time of making such request or
giving such authority or consent, is the holder of any Note shall be conclusive
and binding on any subsequent holder, transferee, assignee or indorsee, as the
case may be, of such Note or of any Note or Notes issued in exchange therefor.

          12.09 Resignation by the Administrative Agent or the Syndication
Agent. (a) The Administrative Agent may resign from the performance of all its
respective functions and duties hereunder and/or under the other Credit
Documents at any time by giving 15 Business Days' prior written notice to the
Lenders. Such resignation shall take effect upon the appointment of a successor
Administrative Agent pursuant to clauses (b) and (c) below or as otherwise
provided below. The Syndication Agent may resign from the performance of its
functions and duties hereunder at any time by giving the Administrative Agent
notice thereof. Such resignation shall take effect upon the giving of such
notice.

          (b) Upon any such notice of resignation by the Administrative Agent,
the Required Lenders shall appoint a successor Administrative Agent hereunder
or thereunder who shall be a commercial bank or trust company reasonably
acceptable to the Borrower.

          (c) If a successor Administrative Agent shall not have been so
appointed within such 15 Business Day period, the Administrative Agent with the
consent of the Borrower (which consent shall not be unreasonably withheld or
delayed), shall then appoint a successor Administrative Agent who shall serve
as Administrative Agent hereunder or thereunder until such time, if any, as the
Required Lenders appoint a successor Administrative Agent as provided above.

          (d) If no successor Administrative Agent has been appointed pursuant
to clause (b) or (c) above by the 20th Business Day after the date such notice
of resignation was given by the Administrative Agent, the Administrative
Agent's resignation shall become effective


                                     -114-
<PAGE>   116

and the Required Lenders shall thereafter perform all the duties of the
Administrative Agent hereunder and/or under any other Credit Document until
such time, if any, as the Required Lenders appoint a successor Administrative
Agent as provided above.

          SECTION 13. Miscellaneous.

          13.01 Payment of Expenses, etc. The Borrower shall: (i) whether or
not the transactions herein contemplated are consummated, pay all reasonable
out-of-pocket costs and expenses of each Agent (including, without limitation,
the reasonable fees and disbursements of White & Case LLP and of the Agents'
consultants and other counsel to the Agents in connection with the preparation,
execution and delivery of this Agreement and the other Credit Documents and the
documents and instruments referred to herein and therein and any amendment,
waiver or consent relating hereto or thereto, of the Agents in connection with
their syndication efforts with respect to this Agreement and of the Agents and,
after the occurrence of an Event of Default, each of the Lenders in connection
with the enforcement of this Agreement and the other Credit Documents and the
documents and instruments referred to herein and therein or in connection with
any refinancing or restructuring of the credit arrangements provided under this
Agreement in the nature of a "work-out" or pursuant to any insolvency or
bankruptcy proceedings (including, in each case without limitation, the
reasonable fees and disbursements of counsel for the Agents and, after the
occurrence of an Event of Default, for each of the Lenders); (ii) pay and hold
each of the Lenders harmless from and against any and all present and future
stamp, excise and other similar documentary taxes with respect to the foregoing
matters and save each of the Lenders harmless from and against any and all
liabilities with respect to or resulting from any delay or omission (other than
to the extent attributable to such Lender) to pay such taxes; and (iii)
indemnify each Agent and each Lender, and each of their respective officers,
directors, employees, representatives, agents, trustees and investment advisors
from and hold each of them harmless against any and all liabilities,
obligations (including removal or remedial actions), losses, damages,
penalties, claims, actions, judgments, suits, costs, expenses and disbursements
(including reasonable attorneys' and consultants' fees and disbursements)
incurred by, imposed on or assessed against any of them as a result of, or
arising out of, or in any way related to, or by reason of, (a) any
investigation, litigation or other proceeding (whether or not any Agent or any
Lender is a party thereto and whether or not such investigation, litigation or
other proceeding is brought by or on behalf of any Credit Party) related to the
entering into and/or performance of this Agreement or any other Credit Document
or the use of any Letter of Credit or the proceeds of any Loans hereunder or
the consummation of the transactions contemplated herein or in any other Credit
Document or the exercise of any of their rights or remedies provided herein or
in the other Credit Documents, or (b) the actual or alleged presence of
Hazardous Materials in the air, surface water or groundwater or on the surface
or subsurface of any Real Property currently or previously owned, leased or
operated by the Borrower or any of its Subsidiaries, the generation, storage,
transportation, handling or disposal of Hazardous Materials by the Borrower or
any of its Subsidiaries at any location, whether or not currently or previously
owned, leased or operated by the Borrower or any of its Subsidiaries, the
non-compliance of any Real Property with foreign, federal, state and local
laws, regulations, and ordinances (including applicable permits thereunder)
applicable to any Real Property, or any Environmental Claim asserted against
the Borrower, any of its Subsidiaries or any Real Property currently or
previously owned, leased or operated by the Borrower or any of its
Subsidiaries, including, in each case, without limitation, the reasonable fees


                                     -115-
<PAGE>   117

and disbursements of counsel and other consultants incurred in connection with
any such investigation, litigation or other proceeding (but in each of the
foregoing instances excluding any losses, liabilities, claims, damages or
expenses to the extent incurred by reason of the gross negligence or willful
misconduct of the Person to be indemnified (as finally determined by a court
competent jurisdiction)). To the extent that the undertaking to indemnify, pay
or hold harmless each Agent or any Lender set forth in the preceding sentence
may be unenforceable because it is violative of any law or public policy, the
Borrower shall make the maximum contribution to the payment and satisfaction of
each of the indemnified liabilities which is permissible under applicable law.

          13.02 Right of Setoff. In addition to any rights now or hereafter
granted under applicable law or otherwise, and not by way of limitation of any
such rights, upon the occurrence and during the continuance of an Event of
Default, the Administrative Agent and each Lender is hereby authorized at any
time or from time to time, without presentment, demand, protest or other notice
of any kind to any Credit Party or to any other Person, any such notice being
hereby expressly waived, to set off and to appropriate and apply any and all
deposits (general or special) and any other Indebtedness at any time held or
owing by the Administrative Agent or such Lender (including, without
limitation, by branches and agencies of such Lender wherever located) to or for
the credit or the account of any Credit Party against and on account of the
Obligations and liabilities of the Credit Parties to the Administrative Agent
or such Lender under this Agreement or under any of the other Credit Documents,
including, without limitation, all interests in Obligations purchased by such
Lender pursuant to Section 13.06(b), and all other claims of any nature or
description arising out of or connected with this Agreement or any other Credit
Document, irrespective of whether or not such Lender shall have made any demand
hereunder and although said Obligations, liabilities or claims, or any of them,
shall be contingent or unmatured.

          13.03 Notices. Except as otherwise expressly provided herein, all
notices and other communications provided for hereunder shall be in writing
(including telegraphic, telex, telecopier or cable communication) and mailed,
telegraphed, telexed, telecopied, cabled or delivered: if to any Credit Party,
at the address specified opposite its signature below or in the other relevant
Credit Documents; if to any Lender, at its address specified on Schedule II;
and if to the Administrative Agent, at the Notice Office; or, as to any Credit
Party or the Administrative Agent, at such other address as shall be designated
by such party in a written notice to the other parties hereto and, as to each
Lender, at such other address as shall be designated by such Lender in a
written notice to the Borrower and the Administrative Agent. All such notices
and communications shall, when mailed, telegraphed, telexed, telecopied, or
cabled or sent by overnight courier, be effective when deposited in the mails,
delivered to the telegraph company, cable company or overnight courier, as the
case may be, or sent by telex or telecopier, except that notices and
communications to the Administrative Agent and the Borrower shall not be
effective until received by the Administrative Agent or the Borrower, as the
case may be.

          13.04 Benefit of Agreement; Assignments; Participations. (a) This
Agreement shall be binding upon and inure to the benefit of and be enforceable
by the respective successors and assigns of the parties hereto; provided,
however, the Borrower may not assign or transfer any of its rights, obligations
or interest hereunder without the prior written consent of the Lenders and,
provided further, that, although any Lender may transfer, assign or grant
participations in its 


                                     -116-
<PAGE>   118

rights hereunder, such Lender shall remain a "Lender" for all purposes
hereunder (and may not transfer or assign all or any portion of its Commitments
hereunder except as provided in Sections 1.13 and 13.04(b)) and the transferee,
assignee or participant, as the case may be, shall not constitute a "Lender"
hereunder and, provided further, that no Lender shall transfer or grant any
participation under which the participant shall have rights to approve any
amendment to or waiver of this Agreement or any other Credit Document except to
the extent such amendment or waiver would (i) extend the final scheduled
maturity of any Loan, Note or Letter of Credit (unless such Letter of Credit is
not extended beyond the Multiple Draw I/Revolver Maturity Date) in which such
participant is participating, or reduce the rate or extend the time of payment
of interest or Fees thereon (except in connection with a waiver of
applicability of any post-default increase in interest rates) or reduce the
principal amount thereof (it being understood that any amendment or
modification to the financial definitions in this Agreement or to Section
13.07(a) shall not constitute a reduction in the rate of interest or Fees for
purposes of this clause (i)), or increase the amount of the participant's
participation over the amount thereof then in effect (it being understood that
a waiver of any Default or Event of Default or of a mandatory reduction in the
Total Commitment shall not constitute a change in the terms of such
participation, and that an increase in any Commitment or Loan shall be
permitted without the consent of any participant if the participant's
participation is not increased as a result thereof), (ii) consent to the
assignment or transfer by the Borrower of any of its rights and obligations
under this Agreement or (iii) release all or substantially all of the
Collateral under all of the Security Documents (except as expressly provided in
the Credit Documents) supporting the Loans or Letters of Credit hereunder in
which such participant is participating. In the case of any such participation,
the participant shall not have any rights under this Agreement or any of the
other Credit Documents (the participant's rights against such Lender in respect
of such participation to be those set forth in the agreement executed by such
Lender in favor of the participant relating thereto) and all amounts payable by
the Borrower hereunder shall be determined as if such Lender had not sold such
participation.

          (b) Notwithstanding the foregoing, any Lender (or any Lender together
with one or more other Lenders) may (x) assign all or a portion of its
Commitments and related outstanding Obligations (or, if the Commitments with
respect to the relevant Tranche have terminated, outstanding Obligations)
hereunder to (i) its parent company and/or any affiliate of such Lender which
is at least 50% owned by such Lender or its parent company or to one or more
Lenders or (ii) in the case of any Lender that is a fund that invests in loans,
any other fund that invests in loans and is managed or advised by the same
investment advisor of such Lender or by an Affiliate of such investment advisor
or (y) assign all, or if less than all, a portion equal to at least $5,000,000
in the aggregate for the assigning Lender or assigning Lenders, of such
Commitments and related outstanding Obligations (or, if the Commitments with
respect to the relevant Tranche have terminated, outstanding Obligations)
hereunder to one or more Eligible Transferees (treating any fund that invests
in loans and any other fund that invests in loans and is managed or advised by
the same investment advisor of such fund or by an Affiliate of such investment
advisor as a single Eligible Transferee), each of which assignees shall become
a party to this Agreement as a Lender by execution of an Assignment and
Assumption Agreement, provided that, (i) at such time Schedule I shall be
deemed modified to reflect the Commitments and/or outstanding Loans, as the
case may be, of such new Lender and of the existing Lenders, (ii) upon the
surrender of the relevant Notes by the assigning Lender (or, upon such
assigning 


                                     -117-
<PAGE>   119

Lender's indemnifying the Borrower for any lost Note pursuant to a customary
indemnification agreement) new Notes will be issued, at the Borrower's expense,
to such new Lender and to the assigning Lender upon the request of such new
Lender or assigning Lender, such new Notes to be in conformity with the
requirements of Section 1.05 (with appropriate modifications) to the extent
needed to reflect the revised Commitments and/or outstanding Loans, as the case
may be, (iii) the consent of the Administrative Agent and, so long as no
Default or Event of Default then exists, the consent of the Borrower (each of
which consents shall not be unreasonably withheld or delayed) shall be required
in connection with any assignment to an Eligible Transferee pursuant to clause
(y) above, provided that the consent of the Borrower shall not be required
until the earlier of (A) the Syndication Date and (B) the 90th day after the
Initial Borrowing Date, (iv) the Administrative Agent shall receive at the time
of each such assignment, from the assigning or assignee Lender, the payment of
a non-refundable assignment fee of $3,500 and (v) no such transfer or
assignment will be effective until recorded by the Administrative Agent on the
Register pursuant to Section 13.15. To the extent of any assignment pursuant to
this Section 13.04(b), the assigning Lender shall be relieved of its
obligations hereunder with respect to its assigned Commitments and outstanding
Loans. At the time of each assignment pursuant to this Section 13.04(b) to a
Person which is not already a Lender hereunder and which is not a United States
person (as such term is defined in Section 7701(a)(30) of the Code) for Federal
income tax purposes, the respective assignee Lender shall, to the extent
legally entitled to do so, provide to the Borrower the appropriate Internal
Revenue Service Forms (and, if applicable, a Section 4.04(b)(ii) Certificate)
described in Section 4.04(b). To the extent that an assignment of all or any
portion of a Lender's Commitments and related outstanding Obligations pursuant
to Section 1.13 or this Section 13.04(b) would, at the time of such assignment,
result in increased costs under Section 1.10, 2.06 or 4.04 from those being
charged by the respective assigning Lender prior to such assignment, then the
Borrower shall not be obligated to pay such increased costs (although the
Borrower, in accordance with and pursuant to the other provisions of this
Agreement, shall be obligated to pay any other increased costs of the type
described above resulting from changes after the date of the respective
assignment).

          (c) Nothing in this Agreement shall prevent or prohibit any Lender
from pledging its Loans and Notes hereunder to a Federal Reserve Bank in
support of borrowings made by such Lender from such Federal Reserve Bank and,
with the consent of the Administrative Agent, any Lender which is a fund may
pledge all or any portion of its Loans and Notes to its trustee in support of
its obligations to its trustee. No pledge pursuant to this clause (c) shall
release the transferor Lender from any of its obligations hereunder.

          13.05 No Waiver; Remedies Cumulative. No failure or delay on the part
of the Administrative Agent, the Syndication Agent, the Collateral Agent, the
Issuing Lender or any Lender in exercising any right, power or privilege
hereunder or under any other Credit Document and no course of dealing between
the Borrower or any other Credit Party and the Administrative Agent, the
Syndication Agent, the Collateral Agent, the Issuing Lender or any Lender shall
operate as a waiver thereof; nor shall any single or partial exercise of any
right, power or privilege hereunder or under any other Credit Document preclude
any other or further exercise thereof or the exercise of any other right, power
or privilege hereunder or thereunder. The rights, powers and remedies herein or
in any other Credit Document expressly provided are cumulative and not
exclusive of any rights, powers or remedies which the Administrative Agent, the
Syndication


                                     -118-
<PAGE>   120

Agent, the Collateral Agent, the Issuing Lender or any Lender would otherwise
have. No notice to or demand on any Credit Party in any case shall entitle any
Credit Party to any other or further notice or demand in similar or other
circumstances or constitute a waiver of the rights of the Administrative Agent,
the Syndication Agent, the Collateral Agent, the Issuing Lender or any Lender
to any other or further action in any circumstances without notice or demand.

          13.06 Payments Pro Rata. (a) Except as otherwise provided in this
Agreement, the Administrative Agent agrees that promptly after its receipt of
each payment from or on behalf of the Borrower in respect of any Obligations
hereunder, it shall distribute such payment to the Lenders (other than any
Lender that has consented in writing to waive its pro rata share of any such
payment) pro rata based upon their respective shares, if any, of the
Obligations with respect to which such payment was received.

          (b) Each of the Lenders agrees that, if it should receive any amount
hereunder (whether by voluntary payment, by realization upon security, by the
exercise of the right of setoff or banker's lien, by counterclaim or cross
action, by the enforcement of any right under the Credit Documents, or
otherwise), which is applicable to the payment of the principal of, or interest
on, the Loans, Unpaid Drawings, Commitment Commission or Letter of Credit Fees,
of a sum which with respect to the related sum or sums received by other
Lenders is in a greater proportion than the total of such Obligation then owed
and due to such Lender bears to the total of such Obligation then owed and due
to all of the Lenders immediately prior to such receipt, then such Lender
receiving such excess payment shall purchase for cash without recourse or
warranty from the other Lenders an interest in the Obligations of the
respective Credit Party to such Lenders in such amount as shall result in a
proportional participation by all the Lenders in such amount; provided that if
all or any portion of such excess amount is thereafter recovered from such
Lenders, such purchase shall be rescinded and the purchase price restored to
the extent of such recovery, but without interest.

          (c) Notwithstanding anything to the contrary contained herein, the
provisions of the preceding Sections 13.06(a) and (b) shall be subject to the
express provisions of this Agreement which require, or permit, differing
payments to be made to Non-Defaulting Lenders as opposed to Defaulting Lenders.

          13.07 Calculations; Computations; Accounting Terms. (a) The financial
statements to be furnished to the Lenders pursuant hereto shall be made and
prepared in accordance with generally accepted accounting principles in the
United States consistently applied throughout the periods involved (except as
set forth in the notes thereto or as otherwise disclosed in writing by the
Borrower to the Lenders); provided that except as otherwise specifically
provided herein, all computations of Excess Cash Flow, and all computations and
all definitions used in determining compliance with Sections 9.07 through 9.10,
inclusive, shall utilize accounting principles and policies in conformity with
those used to prepare the historical financial statements of the Borrower and
its Subsidiaries referred to in Section 7.05(a).

          (b) All computations of interest, Commitment Commission and other
Fees hereunder shall be made on the basis of a year of 360 days for the actual
number of days (including the first day but excluding the last day; except that
in the case of Letter of Credit Fees,


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<PAGE>   121

the last day shall be included) occurring in the period for which such
interest, Commitment Commission or Fees are payable.

          13.08 GOVERNING LAW; SUBMISSION TO JURISDICTION; VENUE; WAIVER OF
JURY TRIAL. (a) THIS AGREEMENT AND THE OTHER CREDIT DOCUMENTS AND THE RIGHTS
AND OBLIGATIONS OF THE PARTIES HEREUNDER AND THEREUNDER SHALL BE CONSTRUED IN
ACCORDANCE WITH AND BE GOVERNED BY THE LAW OF THE STATE OF NEW YORK. ANY LEGAL
ACTION OR PROCEEDING WITH RESPECT TO THIS AGREEMENT OR ANY OTHER CREDIT
DOCUMENT MAY BE BROUGHT IN THE COURTS OF THE STATE OF NEW YORK OR OF THE UNITED
STATES FOR THE SOUTHERN DISTRICT OF NEW YORK, AND, BY EXECUTION AND DELIVERY OF
THIS AGREEMENT OR ANY OTHER CREDIT DOCUMENT, THE BORROWER HEREBY IRREVOCABLY
ACCEPTS FOR ITSELF AND IN RESPECT OF ITS PROPERTY, GENERALLY AND
UNCONDITIONALLY, THE JURISDICTION OF THE AFORESAID COURTS. THE BORROWER HEREBY
FURTHER IRREVOCABLY WAIVES ANY CLAIM THAT ANY SUCH COURTS LACK PERSONAL
JURISDICTION OVER SUCH CREDIT PARTY, AND AGREES NOT TO PLEAD OR CLAIM, IN ANY
LEGAL ACTION PROCEEDING WITH RESPECT TO THIS AGREEMENT OR ANY OTHER CREDIT
DOCUMENTS BROUGHT IN ANY OF THE AFOREMENTIONED COURTS, THAT SUCH COURTS LACK
PERSONAL JURISDICTION OVER IT. THE BORROWER FURTHER IRREVOCABLY CONSENTS TO THE
SERVICE OF PROCESS OUT OF ANY OF THE AFOREMENTIONED COURTS IN ANY SUCH ACTION
OR PROCEEDING BY THE MAILING OF COPIES THEREOF BY REGISTERED OR CERTIFIED MAIL,
POSTAGE PREPAID, TO THE BORROWER AT ITS ADDRESS SET FORTH OPPOSITE ITS
SIGNATURE BELOW, SUCH SERVICE TO BECOME EFFECTIVE 30 DAYS AFTER SUCH MAILING.
THE BORROWER HEREBY IRREVOCABLY WAIVES ANY OBJECTION TO SUCH SERVICE OF PROCESS
AND FURTHER IRREVOCABLY WAIVES AND AGREES NOT TO PLEAD OR CLAIM IN ANY ACTION
OR PROCEEDING COMMENCED HEREUNDER OR UNDER ANY OTHER CREDIT DOCUMENT THAT
SERVICE OF PROCESS WAS IN ANY WAY INVALID OR INEFFECTIVE. NOTHING HEREIN SHALL
AFFECT THE RIGHT OF THE ADMINISTRATIVE AGENT, ANY LENDER OR THE HOLDER OF ANY
NOTE TO SERVE PROCESS IN ANY OTHER MANNER PERMITTED BY LAW OR TO COMMENCE LEGAL
PROCEEDINGS OR OTHERWISE PROCEED AGAINST THE BORROWER IN ANY OTHER
JURISDICTION.

          (b) THE BORROWER HEREBY IRREVOCABLY WAIVES ANY OBJECTION WHICH IT MAY
NOW OR HEREAFTER HAVE TO THE LAYING OF VENUE OF ANY OF THE AFORESAID ACTIONS OR
PROCEEDINGS ARISING OUT OF OR IN CONNECTION WITH THIS AGREEMENT OR ANY OTHER
CREDIT DOCUMENT BROUGHT IN THE COURTS REFERRED TO IN CLAUSE (a) ABOVE AND
HEREBY FURTHER IRREVOCABLY, TO THE EXTENT PERMITTED BY APPLICABLE LAW, WAIVES
AND AGREES NOT TO PLEAD OR CLAIM IN ANY SUCH COURT THAT ANY SUCH ACTION OR
PROCEEDING BROUGHT IN ANY SUCH COURT HAS BEEN BROUGHT IN AN INCONVENIENT FORUM.


                                     -120-
<PAGE>   122

          (c) EACH OF THE PARTIES TO THIS AGREEMENT HEREBY IRREVOCABLY WAIVES
ALL RIGHT TO A TRIAL BY JURY IN ANY ACTION, PROCEEDING OR COUNTERCLAIM ARISING
OUT OF OR RELATING TO THIS AGREEMENT, THE OTHER CREDIT DOCUMENTS OR THE
TRANSACTIONS CONTEMPLATED HEREBY OR THEREBY.

          13.09 Counterparts. This Agreement may be executed in any number of
counterparts and by the different parties hereto on separate counterparts, each
of which when so executed and delivered shall be an original, but all of which
shall together constitute one and the same instrument. A set of counterparts
executed by all the parties hereto shall be lodged with the Borrower, the
Administrative Agent and the Syndication Agent.

          13.10 Effectiveness. This Agreement shall become effective on the
date (the "Effective Date") on which the Borrower, each Agent and each of the
Lenders shall have signed a counterpart hereof (whether the same or different
counterparts) and shall have delivered the same to the Administrative Agent at
the Notice Office or, in the case of the Lenders, shall have given to the
Administrative Agent telephonic (confirmed in writing), written or telex notice
(actually received) at such office that the same has been signed and mailed to
it. The Administrative Agent will give the Borrower and each Lender prompt
written notice of the occurrence of the Effective Date.

          13.11 Headings Descriptive. The headings of the several sections and
subsections of this Agreement are inserted for convenience only and shall not
in any way affect the meaning or construction of any provision of this
Agreement.

          13.12 Amendment or Waiver; etc. (a) Neither this Agreement nor any
other Credit Document nor any terms hereof or thereof may be changed, waived,
discharged or terminated unless such change, waiver, discharge or termination
is in writing signed by the respective Credit Parties party thereto and the
Required Lenders, provided that no such change, waiver, discharge or
termination shall, without the consent of each Lender (other than a Defaulting
Lender) (with Obligations being directly affected in the case of following
clause (i)), (i) extend the final scheduled maturity of any Loan or Note or
extend the stated expiration date of any Letter of Credit beyond the Multiple
Draw I/Revolver Maturity Date, or reduce the rate or extend the time of payment
of interest or Fees thereon (except in connection with the waiver of
applicability of any post-default increase in interest rates), or reduce the
principal amount thereof (it being understood that any amendment or
modification to the financial definitions in this Agreement or to Section
13.07(a) shall not constitute a reduction in the rate of interest or Fees for
purposes of this clause (i)), (ii) release all or substantially all of the
Collateral (except as expressly provided in the Credit Documents) under all the
Security Documents, (iii) amend, modify or waive any provision of this Section
13.12 (except for technical amendments with respect to additional extensions of
credit pursuant to this Agreement which afford the protections to such
additional extensions of credit of the type provided to the Term Loans and the
Revolving Loan Commitments on the Effective Date), (iv) reduce the percentage
specified in the definition of Required Lenders (it being understood that, with
the consent of the Required Lenders, additional extensions of credit pursuant
to this Agreement may be included in the determination of the Required Lenders
on substantially the same basis as the extensions of Term Loans and 


                                     -121-
<PAGE>   123

Revolving Loan Commitments are included on the Effective Date) or (v) consent
to the assignment or transfer by the Borrower of any of its rights and
obligations under this Agreement; provided further, that no such change,
waiver, discharge or termination shall (1) increase the Commitments of any
Lender over the amount thereof then in effect without the consent of such
Lender (it being understood that waivers or modifications of conditions
precedent, covenants, Defaults or Events of Default or of a mandatory reduction
in the Total Commitment shall not constitute an increase of the Commitment of
any Lender, and that an increase in the available portion of any Commitment of
any Lender shall not constitute an increase of the Commitment of such Lender),
(2) without the consent of the Issuing Lender, amend, modify or waive any
provision of Section 2 or alter its rights or obligations with respect to
Letters of Credit, (3) without the consent of the Swingline Lender, alter the
Swingline Lender's rights or obligations with respect to Swingline Loans, (4)
without the consent of each Agent, amend, modify or waive any provision of
Section 12 or any other provision as same relates to the rights or obligations
of such Agent or (5) without the consent of Collateral Agent, amend, modify or
waive any provision relating to the rights or obligations of the Collateral
Agent, (6) except in cases where additional extensions of term loans are being
afforded substantially the same treatment afforded to the Term Loans pursuant
to this Agreement as originally in effect, without the consent of the Majority
Lenders of each Tranche which is being allocated a lesser prepayment, repayment
or commitment reduction as a result of the actions described below (or without
the consent of the Majority Lenders of each Tranche in the case of an amendment
to the definition of Majority Lenders), amend the definition of Majority
Lenders or alter the required application of any prepayments or repayments (or
commitment reduction), as between the various Tranches, pursuant to Section
4.01 or 4.02 (excluding Section 4.02(b)) (although the Required Lenders may
waive, in whole or in part, any such prepayment, repayment or commitment
reduction, so long as the application, as amongst the various Tranches, of any
such prepayment, repayment or commitment reduction which is still required to
be made is not altered), or (7) reduce the amount of, or extend the date of,
any Multiple Draw I Term Loan Scheduled Repayment without the consent of the
Supermajority Lenders holding Multiple Draw I Term Loans, or reduce the amount,
or extend the date of, any Multiple Draw II Term Loan Scheduled Repayment
without the consent of the Supermajority Lenders holding Multiple Draw II Term
Loans, or amend the definition of Supermajority Lenders (it being understood
that, with the consent of the Required Lenders, additional extensions of credit
pursuant to this Agreement may be included in the determination of the
Supermajority Lenders on substantially the same basis as the extensions of Term
Loans and Revolving Loan Commitments are included on the Effective Date)
without the consent of the Supermajority Lenders holding both Multiple Draw I
Term Loans and Multiple Draw II Term Loans.

          (b) If, in connection with any proposed change, waiver, discharge or
termination to any of the provisions of this Agreement as contemplated by
clauses (i) through (v), inclusive, of the first proviso to Section 13.12(a),
the consent of the Required Lenders is obtained but the consent of one or more
of such other Lenders whose consent is required is not obtained, then the
Borrower shall have the right, so long as all non-consenting Lenders whose
individual consent is required are treated as described in either clauses (A)
or (B) below, to either (A) replace each such non-consenting Lender or Lenders
with one or more Replacement Lenders pursuant to Section 1.13 so long as at the
time of such replacement, each such Replacement Lenders consents 


                                     -122-
<PAGE>   124

to the proposed change, waiver, discharge or termination or (B) terminate such
non-consenting Lender's Commitments and/or repay each Tranche of outstanding
Loans of such Lender in accordance with Sections 3.02(d) and/or 4.01(b),
provided that, unless the Commitments that are terminated, and Loans repaid,
pursuant to preceding clause (B) are immediately replaced in full at such time
through the addition of new Lenders or the increase of the Commitments and/or
outstanding Loans of existing Lenders (who in each case must specifically
consent thereto), then in the case of any action pursuant to preceding clause
(B) the Required Lenders (determined after giving effect to the proposed
action) shall specifically consent thereto, provided further, that in any event
the Borrower shall not have the right to replace a Lender, terminate its
Commitments or repay its Loans solely as a result of the exercise of such
Lender's rights (and the withholding of any required consent by such Lender)
pursuant to the second proviso to Section 13.12(a).

          (c) Notwithstanding anything to the contrary contained in clause (a)
above of this Section 13.12, the Borrower, the Administrative Agent and each
Multiple Draw II Term Loan Lender in respect of any Multiple Draw II Term Loan
Sub-Facility may, in accordance with the provisions of Section 1.14, enter into
a Multiple Draw II Term Loan Commitment Agreement in respect of such Multiple
Draw II Term Loan Sub-Facility, provided that after the execution and delivery
by the Borrower, the Administrative Agent and each such Multiple Draw II Term
Loan Lender of such Multiple Draw II Term Loan Commitment Agreement, such
Multiple Draw II Term Loan Commitment Agreement may thereafter only be modified
in accordance with the requirements of clause (a) above of this Section 13.12.

          13.13 Survival. All indemnities set forth herein including, without
limitation, in Sections 1.10, 1.11, 2.06, 4.04, 12.06 and 13.01 shall survive
the execution, delivery and termination of this Agreement and the Notes and the
making and repayment of the Obligations.

          13.14 Domicile of Loans. Each Lender may transfer and carry its Loans
at, to or for the account of any office, Subsidiary or Affiliate of such
Lender. Notwithstanding anything to the contrary contained herein, to the
extent that a transfer of Loans pursuant to this Section 13.14 would, at the
time of such transfer, result in increased costs under Section 1.10, 1.11, 2.06
or 4.04 from those being charged by the respective Lender prior to such
transfer, then the Borrower shall not be obligated to pay such increased costs
(although the Borrower shall be obligated to pay any other increased costs of
the type described above resulting from changes after the date of the
respective transfer).

          13.15 Register. The Borrower hereby designates the Administrative
Agent to serve as the Borrower's agent, solely for purposes of this Section
13.15, to maintain a register (the "Register") on which it will record the
Commitments from time to time of each of the Lenders, the Loans made by each of
the Lenders and each repayment in respect of the principal amount of the Loans
of each Lender. Failure to make any such recordation, or any error in such
recordation, shall not affect the Borrower's obligations in respect of such
Loans. With respect to any Lender, the transfer or provision of the Commitments
of such Lender and the rights to the principal of, and interest on, any Loan
made pursuant to such Commitments shall not be effective until such transfer is
recorded on the Register maintained by the Administrative Agent with respect to
ownership of such Commitments and Loans and prior to such recordation all
amounts owing to the transferor with respect to such Commitments and Loans
shall remain owing to the 


                                     -123-
<PAGE>   125

transferor. The registration of assignment or transfer of all or part of any
Commitments and Loans shall be recorded by the Administrative Agent on the
Register only upon the acceptance by the Administrative Agent of a properly
executed and delivered Assignment and Assumption Agreement pursuant to Section
13.04(b). Coincident with the delivery of such an Assignment and Assumption
Agreement to the Administrative Agent for acceptance and registration of
assignment or transfer of all or part of a Loan, or as soon thereafter as
practicable, the assigning or transferor Lender shall surrender the Note (if
any) evidencing such Loan, and thereupon one or more new Notes in the same
aggregate principal amount shall be issued to the assigning or transferor
Lender and/or the new Lender at the request of any such Lender. The
registration of any provision of Multiple Draw II Term Loan Commitments
pursuant to Section 1.14 shall be recorded by the Administrative Agent on the
Register only upon the acceptance of the Administrative Agent of a properly
executed and delivered Multiple Draw II Term Loan Commitment Agreement.
Coincident with the delivery of such Multiple Draw II Term Loan Commitment
Agreement for acceptance and registration of the provision of a Multiple Draw
II Term Loan Commitment, or as soon thereafter as practicable, new Notes shall
be issued to the respective Multiple Draw II Term Loan Lender at the request of
such Multiple Draw II Term Loan Lender. The Borrower agrees to indemnify the
Administrative Agent from and against any and all losses, claims, damages and
liabilities of whatsoever nature which may be imposed on, asserted against or
incurred by the Administrative Agent in performing its duties under this
Section 13.15 (other than any losses, claims, damages and liabilities to the
extent incurred by reason of the gross negligence or willful misconduct of the
Administrative Agent (as finally determined by a court of competent
jurisdiction)).

          13.16 Confidentiality. (a) Subject to the provisions of clause (b) of
this Section 13.16, each Agent and each Lender agrees that it will use its
reasonable efforts not to disclose without the prior consent of the Borrower
(other than to its employees, auditors, advisors or counsel or to another Agent
or Lender, as the case may be, if such Agent or Lender, as the case may be, or
such Agent's or Lender's holding or parent company, as the case may be, in its
sole discretion determines that any such party should have access to such
information, provided such Persons shall be subject to the provisions of this
Section 13.16 to the same extent as such Agent or Lender) any information with
respect to the Borrower or any of its Subsidiaries which is now or in the
future furnished pursuant to this Agreement or any other Credit Document and
which is designated by the Borrower to the Lenders in writing, or could
reasonably be expected to be considered, as confidential, provided that any
Agent or Lender may disclose any such information (i) as has become generally
available to the public other than by virtue of a breach of this Section
13.16(a) by the respective Agent or Lender, (ii) as may be required or
appropriate in any report, statement or testimony submitted to any municipal,
state or Federal regulatory body having or claiming to have jurisdiction over
such Agent or Lender or to the Federal Reserve Board or the Federal Deposit
Insurance Corporation or similar organizations (whether in the United States or
elsewhere) or their successors, (iii) as may be required or appropriate in
respect to any summons or subpoena or in connection with any litigation, (iv)
in order to comply with any law, order, regulation or ruling applicable to such
Lender, (v) to the Administrative Agent, the Syndication Agent or the
Collateral Agent and (vi) to any prospective or actual transferee or
participant in connection with any contemplated transfer or participation of
any of the Notes or Commitments or any interest therein by any such Lender,
provided that such prospective transferee agrees to be 


                                     -124-
<PAGE>   126

bound by the confidentiality provisions contained in this Section 13.16,
provided further that in the case of a disclosure contemplated by clause (iii)
or (iv) above, such Lender shall use reasonable efforts to provide the Borrower
prior notice of its intention or obligation to disclose such confidential
information.

          (b) The Borrower hereby acknowledges and agrees that each Agent and
each Lender may share with any of their respective affiliates, and such
affiliates may share with such Agent or Lender any information related to the
Borrower or any of its Subsidiaries (including, without limitation, any
non-public customer information regarding the creditworthiness of the Borrower
and its Subsidiaries), provided such Persons shall be subject to the provisions
of this Section 13.16 to the same extent as such Agent and Lender.

          13.17 Certain Agreements with Respect to the 11-1/4% Senior
Subordinated Discount Notes and the 15% Senior Discount Notes. The Borrower
hereby (A) represents and warrants that (i) $50,000,000 of Multiple Draw I of
Term Loans may be incurred under this Agreement on the Initial Borrowing Date
in reliance on Section 4.03(a)(i) of the 11-1/4% Senior Subordinated Discount
Note Indenture and Section 4.03(a)(i) of the 15% Senior Discount Note Indenture
and (ii) $25,000,000 of Revolving Loans, Swingline Loans and Letters of Credit
in the aggregate incurred pursuant to the Total Revolving Loan Commitment as in
effect on the Initial Borrowing Date may be incurred in reliance on Section
4.03(a)(i) of the 11-1/4% Senior Subordinated Discount Note Indenture and
Section 4.03(a)(i) of the 15% Senior Discount Note Indenture and (B) agrees it
will not take any position contrary to the representations and warranties set
forth in preceding clause (A). In addition, the Borrower (A) acknowledges and
agrees that it will not be permitted to (i) incur any Multiple Draw I Term
Loans on any Multiple Draw I Term Loan Borrowing Date unless such Multiple Draw
I Term Loans may be incurred in reliance on Section 4.03(a)(i) of the 11-1/4%
Senior Subordinated Discount Note Indenture and Section 4.03(a)(i) of the 15%
Senior Discount Note Indenture or (ii) incur any Multiple Draw II Term Loans
pursuant to any provision of Multiple Draw II Term Loan Commitments pursuant to
Section 1.14 unless such additional extensions of credit are permitted to be
incurred in reliance on Section 4.03(a)(i) of the 11-1/4% Senior Subordinated
Discount Note Indenture and Section 4.03(a)(i) of the 15% Senior Discount Note
Indenture and (B) covenants and agrees that it will take, and will cause each
of its Subsidiaries to take, all such actions as may be necessary so as to
ensure that all Indebtedness of the Borrower (including, without limitation,
any Multiple Draw I Term Loans incurred on any Multiple Draw I Term Loan Date
and any Multiple Draw II Term Loans incurred as a result of any provision of
Multiple Draw II Term Loan Commitments pursuant to Section 1.14) incurred under
this Agreement and the other Credit Documents shall always be permitted to be
incurred under Section 4.03(a)(i) of the 11-1/4% Senior Subordinated Discount
Note Indenture and Section 4.03(a)(i) of the 15% Senior Discount Note Indenture
without relying on any other provision of the 11-1/4% Senior Subordinated
Discount Note Indenture or the 15% Senior Discount Note Indenture.

                                     * * *


                                     -125-
<PAGE>   127

          IN WITNESS WHEREOF, the parties hereto have caused their duly
authorized officers to execute and deliver this Agreement as of the date first
above written.

Address:

3333 Lee Parkway, Suite 100                 PAGEMART WIRELESS, INC.
Dallas, Texas  75219
Attn:  G. Clay Myers
Tel. No.: (214) 765-3510                    By
Fax No.: (214) 765-4961                       ---------------------------------
                                              Title:


                                            BANKERS TRUST COMPANY,
                                              Individually, as Administrative
                                              Agent and as a Co-Arranger


                                            By
                                              ---------------------------------
                                              Title:

                                            MORGAN STANLEY SENIOR FUNDING, INC.,
                                              Individually, as Syndication Agent
                                              and as a Co-Arranger


                                            By 
                                              ---------------------------------
                                              Title:


<PAGE>   128

                                            FINOVA CAPITAL CORPORATION


                                            By 
                                              ---------------------------------
                                              Title:


<PAGE>   129

                                                                      SCHEDULE I


                                  COMMITMENTS


<TABLE>
<CAPTION>
                   Multiple     Multiple      Multiple     Multiple      Multiple
                   Draw I       Draw I        Draw I       Draw II       Draw II
                   Sub-Tranche  Sub-Tranche   Sub-Tranche  Sub-Tranche   Sub-Tranche
                   A Term Loan  B Term Loan   C Term Loan  A Term Loan   B Term Loan  Revolving Loan
Bank               Commitment   Commitment    Commitment   Commitment    Commitment   Commitment
- ----               -----------  -----------   -----------  -----------   -----------  --------------
<S>                <C>          <C>           <C>          <C>           <C>          <C>
Bankers Trust      $12,500,000  $12,500,000   $ 8,750,000       --            --      $ 8,750,000
Company

Morgan Stanley     $12,500,000  $12,500,000   $ 8,750,000       --            --      $ 8,750,000

Senior Funding,
Inc.

Finova Capital     $         0  $         0   $ 7,500,000       --            --      $ 7,500,000
Corporation
                   -----------  -----------   -----------  ------------   ----------  --------------
TOTAL:             $25,000,000  $25,000,000   $25,000,000       --            --      $25,000,000.00
                   ===========  ===========   ===========  ============   ==========  ==============

</TABLE>

<PAGE>   130

                                                                    SCHEDULE II


                                LENDER ADDRESSES


<TABLE>
<CAPTION>
Bank                                          Address
- ----                                          -------
<S>                                           <C>               
Bankers Trust Company                         130 Liberty Street
                                              New York, New York
                                              Attn:  Greg Shefrin
                                              Tel. No.: (212) 250-1724
                                              Fax No.: (212) 669-1516
Morgan Stanley Senior Funding, Inc.           1221 Avenue of the Americas
                                              New York, New York  10036
                                              Attn:  Morgan Edwards
                                              Tel. No.: (212) 762-5814
                                              Fax No.: (212) 762-9198

                                              with a copy to:

                                              1585 Broadway, 10th Floor
                                              New York, New York 10036
                                              Attn: Jim Morgan
                                              Tel. No.: (212) 761-4866
                                              Fax No.: (212) 761-0592

Finova Capital Corporation                    311 South Wacker Drive
                                              Suite 4400
                                              Chicago, IL 60606-6618
                                              Attn: Andrew J. Pluta
                                              Tel. No.: (312) 322-3534
                                              Fax. No.: (312) 322-3530
</TABLE>


<PAGE>   131

                                                                   SCHEDULE III



                                 REAL PROPERTY



<PAGE>   132

                                                                    SCHEDULE IV



                                     PLANS



<PAGE>   133


                                                                     SCHEDULE V



                                 CAPITALIZATION
<PAGE>   134

                                                                     SCHEDULE V



                                  SUBSIDIARIES



<PAGE>   135

                                                                    SCHEDULE VI



                             EXISTING INDEBTEDNESS


<PAGE>   136

                                                                  SCHEDULE VIII



                                  FCC LICENSES
<PAGE>   137

                                                                    SCHEDULE IX



                          GOVERNMENTAL AUTHORIZATIONS
<PAGE>   138

                                                                      SCHEDULE X
                                                



                                   INSURANCE
<PAGE>   139

                                                                    SCHEDULE XI



                                 EXISTING LIENS


<TABLE>
<CAPTION>
                                       File           Original        Description          Permitted    
Debtor          Secured Party          Number         File Date       of Collateral        Refinancing  
- ------          -------------          ------         ---------       -------------        -----------  
<S>             <C>                    <C>            <C>             <C>                  <C>

</TABLE>



<PAGE>   140

                                                                   SCHEDULE XII



                              EXISTING INVESTMENTS
<PAGE>   141

                               TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                                                           Page
                                                                                                           ----

<S>        <C>                                                                                             <C>
SECTION 1. Amount and Terms of Credit.........................................................................1

     1.01  The Commitments....................................................................................1
     1.02  Minimum Amount of Each Borrowing...................................................................5
     1.03  Notice of Borrowing................................................................................5
     1.04  Disbursement of Funds..............................................................................6
     1.05  Notes..............................................................................................7
     1.06  Conversions........................................................................................9
     1.07  Borrowings.........................................................................................9
     1.08  Interest..........................................................................................10
     1.09  Interest Periods..................................................................................11
     1.10  Increased Costs, Illegality, etc..................................................................12
     1.11  Compensation......................................................................................14
     1.12  Change of Lending Office..........................................................................14
     1.13  Replacement of Lenders............................................................................14
     1.14  Multiple Draw II Term Loan Commitments............................................................15

SECTION 2. Letters of Credit.................................................................................17

     2.01  Letters of Credit.................................................................................17
     2.02  Maximum Letter of Credit Outstandings; Final Maturities...........................................18
     2.03  Letter of Credit Requests; Minimum Stated Amount..................................................18
     2.04  Letter of Credit Participations...................................................................19
     2.05  Agreement to Repay Letter of Credit Drawings......................................................20
     2.06  Increased Costs...................................................................................21

SECTION 3. Commitment Commission; Fees; Reductions of Commitment.............................................22

     3.01  Fees..............................................................................................22
     3.02  Voluntary Termination of Multiple Draw I Term Loan Commitments, Multiple 
               Draw II Term Loan Commitments, Unutilized Revolving Loan Commitments..........................24
     3.03  Mandatory Reduction of Commitments................................................................25

SECTION 4. Prepayments;Payments; Taxes.......................................................................27

     4.01  Voluntary Prepayments.............................................................................27
     4.02  Mandatory Repayments and Commitment Reductions....................................................28
     4.03  Method and Place of Payment.......................................................................33
     4.04  Net Payments......................................................................................33
</TABLE>


                                      (i)
<PAGE>   142

<TABLE>
<CAPTION>
                                                                                                           Page
                                                                                                           ----

<S>        <C>                                                                                             <C>
SECTION 5. Conditions Precedent to Credit Events on the Initial Borrowing Date...............................35

     5.01  Execution of Agreement; Notes.....................................................................36
     5.02  Officer's Certificate.............................................................................36
     5.03  Opinions of Counsel...............................................................................36
     5.04  Corporate Documents; Proceedings; etc.............................................................36
     5.05  Plans; Shareholders' Agreements; Management Agreements; Employment
              Agreements; Non-Compete Agreements;  Existing Indebtedness Agreements..........................37
     5.06  Existing Credit Agreement.........................................................................38
     5.07  Adverse Change, etc...............................................................................38
     5.08  Litigation........................................................................................39
     5.09  Pledge Agreement..................................................................................39
     5.10  Security Agreement................................................................................39
     5.11  Officer's Certificate as to "Senior Indebtedness"under the 11-1/4%
              Senior Subordinated Discount Notes.............................................................40
     5.12  Board Approval....................................................................................40
     5.13  Financial Statements; Pro Forma Balance Sheet; Projections........................................40
     5.14  Solvency Certificate; Insurance Certificates......................................................40
     5.15  Fees, etc.........................................................................................41

SECTION 6. Conditions Precedent to All Credit Events.........................................................41

     6.01  No Default; Representations and Warranties........................................................41
     6.02  Notice of Borrowing; Letter of Credit Request.....................................................41
     6.03  Advanced Messaging Units Thresholds...............................................................41
     6.04  Officer's Certificate as to Compliance under the 11-1/4% Senior 
              Subordinated Discount Notes and the 15% Senior Discount Notes..................................42
     6.05  Special Conditions To Multiple Draw II Term Loans.................................................42

SECTION 7. Representations,Warranties and Agreements.........................................................42

     7.01  Corporate Status..................................................................................43
     7.02  Corporate and Other Power and Authority...........................................................43
     7.03  No Violation......................................................................................43
     7.04  Approvals.........................................................................................43
     7.05  Financial Statements; Financial Condition; Undisclosed Liabilities; 
              Projections; etc...............................................................................44
     7.06  Litigation........................................................................................45
     7.07  True and Complete Disclosure......................................................................45
     7.08  Use of Proceeds; Margin Regulations...............................................................45
     7.09  Tax Returns and Payments..........................................................................46
     7.10  Compliance with ERISA.............................................................................46
     7.11  The Security Documents............................................................................47
     7.12  Properties........................................................................................48
     7.13  Capitalization....................................................................................48
     7.14  Subsidiaries......................................................................................49
     7.15  Compliance with Statutes, etc.....................................................................49
</TABLE>

                                     (ii)
<PAGE>   143

<TABLE>
<CAPTION>
                                                                                                           Page
                                                                                                           ----

<S>        <C>                                                                                             <C>
     7.16  Investment Company Act............................................................................49
     7.17  Public Utility Holding Company Act................................................................49
     7.18  Environmental Matters.............................................................................49
     7.19  Labor Relations...................................................................................50
     7.20  Patents, Licenses, Franchises and Formulas........................................................50
     7.21  Indebtedness......................................................................................50
     7.22  FCC Licenses......................................................................................51
     7.23  Other Governmental Authorizations.................................................................51
     7.24  Qualification.....................................................................................52
     7.25  Insurance.........................................................................................52
     7.26  Year 2000.........................................................................................52
     7.27  11-1/4% Senior Subordinated Discount Notes........................................................53
     7.28  License Subsidiaries..............................................................................53

SECTION 8. Affirmative Covenants.............................................................................53

     8.01  Information Covenants.............................................................................53
              (a)      Monthly Reports.......................................................................53
              (b)      Quarterly Financial Statements........................................................53
              (c)      Annual Financial Statements...........................................................54
              (d)      Management Letters....................................................................54
              (e)      Budgets and Projections...............................................................54
              (f)      Officer's Certificates................................................................54
              (g)      Notice of Default or Litigation; etc..................................................55
              (h)      Other Reports and Filings.............................................................55
              (i)      Environmental Matters.................................................................55
              (j)      Other Information.....................................................................56
     8.02  Books, Records and Inspections; Annual Meetings...................................................56
     8.03  Maintenance of Property; Insurance................................................................57
     8.04  Corporate Franchises..............................................................................58
     8.05  Compliance with Statutes, etc.....................................................................58
     8.06  Compliance with Environmental Laws................................................................58
     8.07  ERISA.............................................................................................58
     8.08  End of Fiscal Years; Fiscal Quarters..............................................................60
     8.09  Performance of Obligations........................................................................60
     8.10  Payment of Taxes..................................................................................60
     8.11  Additional Security; Further Assurances...........................................................60
     8.12  Information Systems and Equipment.................................................................62
     8.13  Actions with Respect to Non-Guarantor Subsidiaries................................................62
     8.14  Section 310(b)(4) of the Communications Act, 47 U.S.C. Section 310(b)(4); 
              Certain Actions Related thereto, etc...........................................................62

SECTION 9. Negative Covenants................................................................................63

     9.01  Liens.............................................................................................63
     9.02  Consolidation, Merger, Purchase or Sale of Assets, etc............................................65
     9.03  Dividends.........................................................................................67
</TABLE>


                                     (iii)
<PAGE>   144

<TABLE>
<CAPTION>
                                                                                                           Page
                                                                                                           ----

<S>        <C>                                                                                             <C>
     9.04  Indebtedness......................................................................................68
     9.05  Advances, Investments and Loans...................................................................71
     9.06  Transactions with Affiliates......................................................................73
     9.07  Capital Expenditures..............................................................................74
     9.08  Consolidated Cash Interest Coverage Ratio.........................................................75
     9.09  Minimum TMS EBITDA................................................................................75
     9.10  Minimum Consolidated EBITDA.......................................................................75
     9.11  Limitations on Payments of Certain Indebtedness; Modifications of 
              Certain Indebtedness; Modifications of Certificate of Incorporation,
              By-Laws and Certain Other Agreements; etc......................................................76
     9.12  Limitation on Certain Restrictions on Subsidiaries................................................77
     9.13  Limitation on Issuance of Capital Stock...........................................................77
     9.14  Business..........................................................................................78
     9.15  Limitation on Creation of Subsidiaries............................................................78

SECTION 10. Events of Default................................................................................78

     10.01  Payments.........................................................................................79
     10.02  Representations, etc.............................................................................79
     10.03  Covenants........................................................................................79
     10.04  Default Under Other Agreements...................................................................79
     10.05  Bankruptcy, etc..................................................................................79
     10.06  ERISA............................................................................................80
     10.07  Security Documents...............................................................................80
     10.08  Subsidiaries Guaranty............................................................................81
     10.09  Judgments........................................................................................81
     10.10  Change of Control................................................................................81
     10.11  Failure to Comply with the Communications Act....................................................81
     10.12  Licenses.........................................................................................81

SECTION 11. Definitions and Accounting Terms.................................................................82

     11.01  Defined Terms....................................................................................82

SECTION 12. The Agents......................................................................................112

     12.01  Appointment.....................................................................................112
     12.02  Nature of Duties................................................................................112
     12.03  Lack of Reliance on the Agents..................................................................112
     12.04  Certain Rights of the Agents....................................................................113
     12.05  Reliance........................................................................................113
     12.06  Indemnification.................................................................................113
     12.07  Each Agent in its Individual Capacity...........................................................114
     12.08  Holders.........................................................................................114
     12.09  Resignation by the Administrative Agent or the Syndication Agent................................114
</TABLE>

                                     (iv)
<PAGE>   145

<TABLE>
<CAPTION>
                                                                                                           Page
                                                                                                           ----

<S>        <C>                                                                                             <C>
SECTION 13. Miscellaneous...................................................................................115

     13.01  Payment of Expenses, etc........................................................................115
     13.02  Right of Setoff.................................................................................116
     13.03  Notices.........................................................................................116
     13.04  Benefit of Agreement; Assignments; Participations...............................................116
     13.05  No Waiver; Remedies Cumulative..................................................................118
     13.06  Payments Pro Rata...............................................................................119
     13.07  Calculations; Computations; Accounting Terms....................................................119
     13.08  GOVERNING LAW; SUBMISSION TO JURISDICTION; VENUE; WAIVER OF JURY TRIAL..........................120
     13.09  Counterparts....................................................................................121
     13.10  Effectiveness...................................................................................121
     13.11  Headings Descriptive............................................................................121
     13.12  Amendment or Waiver; etc........................................................................121
     13.13  Survival........................................................................................123
     13.14  Domicile of Loans...............................................................................123
     13.15  Register........................................................................................123
     13.16  Confidentiality.................................................................................124
     13.17  Certain Agreements with Respect to the 11-1/4% Senior Subordinated Discount Notes and the
              15% Senior Discount Notes.....................................................................125
</TABLE>


SCHEDULE I       Commitments
SCHEDULE II      Lender Addresses
SCHEDULE III     Real Property
SCHEDULE IV      Plans
SCHEDULE V       Capitalization
SCHEDULE VI      Subsidiaries
SCHEDULE VII     Existing Indebtedness
SCHEDULE VIII    FCC Licenses
SCHEDULE IX      Governmental Authorizations
SCHEDULE X       Insurance
SCHEDULE XI      Existing Liens
SCHEDULE XII     Existing Investments

EXHIBIT A        Notice of Borrowing
EXHIBIT B-1      Multiple Draw I Term Note
EXHIBIT B-2      Multiple Draw II Term Note
EXHIBIT B-3      Revolving Note
EXHIBIT B-4      Swingline Note
EXHIBIT C        Multiple Draw II Term Loan Commitment Agreement
EXHIBIT D        Letter of Credit Request
EXHIBIT E        Section 4.04(b)(ii) Certificate
EXHIBIT F-1      Opinion of Davis Polk & Wardwell,
                 Counsel to the Credit Parties
EXHIBIT F-2      Opinion of Frederick G. Anderson, Esq., General Counsel to 
                 the Borrower

                                      (v)
<PAGE>   146

EXHIBIT F-3      Opinion of Paul, Weiss, Rifkind, Wharton & Garrison, Special
                 FCC Counsel to the Credit Parties
EXHIBIT G        Officers' Certificate
EXHIBIT H        Pledge Agreement
EXHIBIT I        Security Agreement
EXHIBIT J        Solvency Certificate
EXHIBIT K        Subsidiaries Guaranty
EXHIBIT L        Assignment and Assumption Agreement
EXHIBIT M        Intercompany Note


                                     (vi)

<PAGE>   1
                                                                    EXHIBIT 10.6



                               SECURITY AGREEMENT

                                     among

                            PAGEMART WIRELESS, INC.,

                            CERTAIN SUBSIDIARIES OF
                            PAGEMART WIRELESS, INC.

                                      and


                             BANKERS TRUST COMPANY,
                              as Collateral Agent



                           Dated as of March 23, 1999






<PAGE>   2

                               SECURITY AGREEMENT


     SECURITY AGREEMENT, dated as of March 23, 1999, made by each of the
undersigned assignors (each an "Assignor" and, together with any other entity
that becomes an assignor hereunder pursuant to Section 10.12 hereof, the
"Assignors") in favor of Bankers Trust Company, as Collateral Agent (the
"Collateral Agent"), for the benefit of the Secured Creditors (as defined
below). Except as otherwise defined herein, capitalized terms used herein and
defined in the Credit Agreement (as defined below) shall be used herein as so
defined.

                             W I T N E S S E T H :


     WHEREAS, PageMart Wireless, Inc. (the "Borrower"), the lenders party from
time to time party thereto (the "Lenders"), Bankers Trust Company, as
Administrative Agent (together with any successor administrative agent, the
"Administrative Agent"), Morgan Stanley Senior Funding, Inc., as Syndication
Agent (the "Syndication Agent") and Bankers Trust Company and Morgan Stanley
Senior Funding, Inc., as Co-Arrangers have entered into a Credit Agreement,
dated as of March 23, 1999, providing for the making of Loans to, and the
issuance of Letters of Credit for the account of, the Borrower as contemplated
therein (as amended, modified or supplemented from time to time, the "Credit
Agreement") (the Lenders, the Administrative Agent, the Syndication Agent, the
Issuing Lender and the Collateral Agent are herein called the "Lender
Creditors");

     WHEREAS, the Borrower may at any time and from time to time enter into one
or more Interest Rate Protection Agreements or Other Hedging Agreements with
one or more Lenders or any affiliate thereof (each such Lender or affiliate,
even if the respective Lender subsequently ceases to be a Lender under the
Credit Agreement for any reason, together with such Lender's or affiliate's
successors and assigns, if any, collectively, the "Other Creditors," and
together with the Lender Creditors, are herein called the "Secured Creditors");

     WHEREAS, it is a condition precedent to the making of Loans to, and the
issuance of Letters of Credit for the account of, the Borrower under the Credit
Agreement that each Assignor shall have executed and delivered to the
Collateral Agent this Agreement; and

     WHEREAS, each Assignor will obtain benefits from the incurrence of Loans
by, and the issuance of Letters of Credit for the account of, the Borrower
under the Credit Agreement and the entering into by the Borrower of Interest
Rate Protection Agreements or Other Hedging Agreements and, accordingly, each
Assignor desires to enter into this Agreement in order to satisfy the condition
described in the preceding paragraph;

     NOW, THEREFORE, in consideration of the benefits accruing to each
Assignor, the receipt and sufficiency of which are hereby acknowledged, each
Assignor hereby makes the following representations and warranties to the
Collateral Agent for the benefit of the Secured

<PAGE>   3

Creditors and hereby covenants and agrees with the Collateral Agent for the
benefit of the Secured Creditors as follows:

                                   ARTICLE I

                               SECURITY INTERESTS

     1.1. Grant of Security Interests. (a) As security for the prompt and
complete payment and performance when due of all of its Obligations, each
Assignor does hereby assign and transfer unto the Collateral Agent, and does
hereby pledge and grant to the Collateral Agent for the benefit of the Secured
Creditors, a continuing security interest in, all of the right, title and
interest of such Assignor in, to and under all of the following, whether now
existing or hereafter from time to time acquired: (i) each and every
Receivable, (ii) all Contracts, together with all Contract Rights arising
thereunder, (iii) all Inventory, (iv) all Equipment, (v) all Marks, together
with the registrations and right to all renewals thereof, and the goodwill of
the business of such Assignor symbolized by the Marks, (vi) all Patents and
Copyrights, (vii) all computer programs of such Assignor and all intellectual
property rights therein and all other proprietary information of such Assignor,
including, but not limited to, Trade Secrets Rights, (viii) all other Goods,
General Intangibles, Investment Property, Permits, Chattel Paper, Documents,
Instruments and other assets (including cash) (subject, in the case of General
Intangibles and Permits constituting FCC Licenses only, to clause (xi) below),
(ix) the Cash Collateral Account and all monies, securities, instruments and
other investments deposited or required to be deposited in such Cash Collateral
Account, (x) all other bank, demand, time savings, cash management, passbook,
certificates of deposit and similar accounts maintained by such Assignor and
all monies, securities, instruments and other investments deposited or required
to be deposited in any of the foregoing accounts, (xi) all goodwill, going
concern value, and all of such Assignor's rights in, to or under, or relating
to, any license, permit or other authorization (each, an "FCC License") issued
by the FCC (provided, however, that such security interest does not include,
and the term "Collateral" does not include, at any time any FCC License to the
extent, but only to the extent, that such Assignor is prohibited at that time
from granting a security interest therein pursuant to the Communications Act,
and the FCC Rules, but includes, to the maximum extent permitted by law, all
rights incident or appurtenant to any such FCC License and the rights to
receive all proceeds, monies or other consideration derived or derivable from
or in connection with the sale, assignment or transfer of any FCC License); and
(xii) all Proceeds and products of any and all of the foregoing (all of the
above, collectively, the "Collateral").

     (b) The security interest of the Collateral Agent under this Agreement
extends to all Collateral of the kind which is the subject of this Agreement
which any Assignor may acquire at any time during the term of this Agreement.

     (c) Notwithstanding anything to the contrary contained in clauses (a) and
(b) above, it is acknowledged and agreed that the security interests created
hereby in any Equipment subject to the Vendor Financing Agreement shall be
second in priority to the security interest in such Equipment created pursuant
to the Vendor Financing Agreement for so long, and for only so long, as the
Vendor Financing Agreement remains in effect, and upon the termination of the


                                      -2-
<PAGE>   4

Vendor Financing Agreement, such Equipment shall be subject to a first priority
security interest pursuant to this Agreement without any further action on the
part of any Assignor, the Collateral Agent or any Secured Creditor.

     (d) Notwithstanding anything to the contrary contained in clauses (a) and
(b) above or elsewhere in this Agreement, it is acknowledged and agreed that
(i) the security interest created hereby shall not extend to any computer
program or patents owned by a third Person in which any Assignor has rights of
usage thereof to the extent (and only to the extent) the granting of a security
interest therein is expressly prohibited by an agreement relating thereto to
which such Assignor is a party and (ii) the security interest created hereunder
in, and the Collateral Agent's and the Secured Creditors' rights and remedies
hereunder with respect to, any Patents that any Assignor has granted rights
therein to a third Person shall be subject to the respective agreement relating
to such grant for so long as, and for only so long as, such agreement remains
in effect; provided, however, that (A) such computer programs or patents, as
the case may be, described in preceding clause (i) above shall be excluded from
the Collateral only to the extent and only for so long as the relevant
agreement continues validly to prohibit the creation of such security interest,
and upon the expiration of such prohibition, all computer programs or patents,
as the case may be, as to which such prohibition previously applied shall
automatically be included in the Collateral, without any further action on the
part of any Assignor, the Collateral Agent, or any other Secured Creditor and
(B) any residual rights of the respective Assignor or Assignors with respect to
Patents described in preceding clause (ii) above shall be included in the
Collateral (and not be subject to the interest of any third Persons to the
fullest extent permitted under the relevant agreement described in clause (ii)
above).

     (e) It is acknowledged and agreed that the security interest created
hereby does not extend to any assets owned by any third Person (and not owned
by any Assignor) that are located at any Real Property sites of any Assignor.

     1.2. Power of Attorney. Each Assignor hereby constitutes and appoints the
Collateral Agent its true and lawful attorney, irrevocably, with full power
after the occurrence of and during the continuance of an Event of Default (in
the name of such Assignor or otherwise) to act, require, demand, receive,
compound and give acquittance for any and all moneys and claims for moneys due
or to become due to such Assignor under or arising out of the Collateral, to
endorse any checks or other instruments or orders in connection therewith and,
subject, in the case of any exercise by the Pledgee of any rights or remedies
that effects an assignment or transfer of control of any FCC License, to
receipt of any approvals that may be required under the Communications Act or
the FCC Rules, to file any claims or take any action or institute any
proceedings which the Collateral Agent may deem to be necessary or advisable to
protect the interests of the Secured Creditors, which appointment as attorney
is coupled with an interest.


                                      -3-
<PAGE>   5

                                   ARTICLE II

               GENERAL REPRESENTATIONS, WARRANTIES AND COVENANTS

     Each Assignor represents, warrants and covenants, which representations,
warranties and covenants shall survive execution and delivery of this
Agreement, as follows:

     2.1. Necessary Filings. All filings, registrations and recordings
necessary or appropriate to create, preserve and perfect the security interest
granted by such Assignor to the Collateral Agent hereby in respect of the
Collateral have been accomplished (or, in the case of (i) any Collateral which
has been moved as described in the last sentence in Section 2.5 of this
Agreement, will have been accomplished within the time period provided in such
sentence or (ii) all other Collateral, will have been accomplished on the
Business Day immediately following the Effective Date) and the security
interest granted to the Collateral Agent pursuant to this Agreement in and to
the Collateral creates a perfected security interest therein prior to the
rights of all other Persons therein and subject to no other Liens (other than
Permitted Liens) and is entitled to all the rights, priorities and benefits
afforded by the Uniform Commercial Code or other relevant law as enacted in any
relevant jurisdiction to perfected security interests, in each case to the
extent that the Collateral consists of the type of property in which a security
interest may be perfected by filing a financing statement under the Uniform
Commercial Code as enacted in any relevant jurisdiction or in the United States
Patent and Trademark Office or in the United States Copyright Office.

     2.2. No Liens. Such Assignor is, and as to Collateral acquired by it from
time to time after the date hereof such Assignor will be, the owner of all
Collateral free from any Lien, security interest, encumbrance or other right,
title or interest of any Person (other than Permitted Liens), and such Assignor
shall defend the Collateral against all claims and demands of all Persons at
any time claiming the same or any interest therein adverse to the Collateral
Agent.

     2.3. Other Financing Statements. As of the date hereof, there is no
financing statement (or similar statement or instrument of registration under
the law of any jurisdiction) covering or purporting to cover any interest of
any kind in the Collateral (other than financing statements filed in respect of
Permitted Liens), and so long as the Termination Date has not occurred, such
Assignor will not execute or authorize to be filed in any public office any
financing statement (or similar statement or instrument of registration under
the law of any jurisdiction) or statements relating to the Collateral, except
financing statements filed or to be filed in respect of and covering the
security interests granted hereby by such Assignor or in connection with
Permitted Liens.

     2.4. Chief Executive Office, Record Locations. The chief executive office
of such Assignor is located at the address indicated on Annex A hereto for such
Assignor. Such Assignor will not move its chief executive office except to such
new location as such Assignor may establish in accordance with the last
sentence of this Section 2.4. The originals of all documents evidencing all
Receivables and Contract Rights of such Assignor and the only original books of
account and records of such Assignor relating thereto are, and will continue to
be, kept at such chief executive office, at one or more of the other locations
set forth on Annex A hereto or at 


                                      -4-
<PAGE>   6

such new locations as such Assignor may establish in accordance with the last
sentence of this Section 2.4. All Receivables and Contract Rights of such
Assignor are, and will continue to be, maintained at, and controlled and
directed (including, without limitation, for general accounting purposes) from,
the office locations described above or such new location established in
accordance with the last sentence of this Section 2.4. No Assignor shall
establish new locations for such offices until (i) it shall have given to the
Collateral Agent not less than 15 days' prior written notice of its intention
to do so, clearly describing such new location and providing such other
information in connection therewith as the Collateral Agent may reasonably
request, (ii) with respect to such new location, it shall have taken all action
reasonably satisfactory to the Collateral Agent to maintain the security
interest of the Collateral Agent in the Collateral intended to be granted
hereby at all times fully perfected and in full force and effect and (iii) at
the request of the Collateral Agent, it shall have furnished an opinion of
counsel reasonably acceptable to the Collateral Agent to the effect that all
financing or continuation statements and amendments or supplements thereto have
been filed in the appropriate filing office or offices, and all other actions
have been taken, in order to perfect (and maintain the perfection of) the
security interest granted hereby in respect of the types of Collateral referred
to in Section 1.1 hereof.

     2.5. Location of Inventory and Equipment. All Inventory and Equipment
(other than Equipment consisting of transmitter sites owned by each Assignor)
held on the date hereof by each Assignor is located at one of the locations
shown on Part A of Annex B hereto for such Assignor. All Equipment constituting
transmitter sites held on the date hereof by each Assignor is located in one of
the States of the United States of America shown on Part B of Annex B hereto
for such Assignor. Each Assignor agrees that all Inventory and Equipment now
held or subsequently acquired by it shall be kept at (or shall be in transport
to) any one of the locations shown on the respective part of Annex B hereto
(or, in the case of Equipment constituting transmitter sites only, any other
location in which the Collateral Agent has filed UCC-1 financing statements in
order to ensure that the Collateral Agent's lien on such Equipment remains
perfected), or such new location as such Assignor may establish in accordance
with the last sentence of this Section 2.5. Except with respect to Equipment
consisting of transmitter sites as otherwise provided above, any Assignor may
establish a new location for Inventory and Equipment only if (i) it shall have
given to the Collateral Agent not less than 15 days' prior written notice of
its intention so to do, clearly describing such new location and providing such
other information in connection therewith as the Collateral Agent may request,
(ii) with respect to such new location, it shall have taken all action
reasonably satisfactory to the Collateral Agent to maintain the security
interest of the Collateral Agent in the Collateral intended to be granted
hereby at all times fully perfected and in full force and effect and (iii) at
the request of the Collateral Agent, it shall have furnished an opinion of
counsel reasonably acceptable to the Collateral Agent to the effect that all
financing or continuation statements and amendments or supplements thereto have
been filed in the appropriate filing office or offices, and all other actions
have been taken, in order to perfect (and maintain the perfection of) the
security interest granted hereby in respect of the types of Collateral referred
to in Section 1.1 hereof. Notwithstanding anything to the contrary contained in
this Section 2.5, in the event any Assignor has moved any Equipment
constituting transmitter sites to a new location such that the security
interest created hereunder in such transmitter sites is no longer perfected,
within 60 days following such move, such Assignor shall provide the Collateral
Agent with the new location or locations of such 


                                      -5-
<PAGE>   7

transmitter sites and, upon the request of the Collateral Agent, shall enter
into UCC-1 financing statements, and shall take any other actions as may be
reasonably requested by the Collateral Agent, to ensure that the Collateral
Agent's lien on such transmitter sites remains perfected.

     2.6. Recourse. This Agreement is made with full recourse to each Assignor
(including, without limitation, with full recourse to all assets of such
Assignor) and pursuant to and upon all the warranties, representations,
covenants and agreements on the part of such Assignor contained herein, in the
other Secured Debt Agreements and otherwise in writing in connection herewith
or therewith.

     2.7. Trade Names; Change of Name. No Assignor has or operates in any
jurisdiction under, or in the preceding five years has had or has operated in
any jurisdiction under, any trade names, fictitious names or other names except
its legal name and such other trade or fictitious names as are listed on Annex
C hereto for such Assignor. No Assignor shall change its legal name or assume
or operate in any jurisdiction under any trade, fictitious or other name except
those names listed on Annex C hereto for such Assignor and new names
established in accordance with the last sentence of this Section 2.7. No
Assignor shall assume or operate in any jurisdiction under any new trade,
fictitious or other name until (i) it shall have given to the Collateral Agent
not less than 15 days' prior written notice of its intention so to do, clearly
describing such new name and the jurisdictions in which such new name shall be
used and providing such other information in connection therewith as the
Collateral Agent may reasonably request, (ii) with respect to such new name, it
shall have taken all action reasonably requested by the Collateral Agent to
maintain the security interest of the Collateral Agent in the Collateral
intended to be granted hereby at all times fully perfected and in full force
and effect and (iii) at the request of the Collateral Agent, it shall have
furnished an opinion of counsel reasonably acceptable to the Collateral Agent
to the effect that all financing or continuation statements and amendments or
supplements thereto have been filed in the appropriate filing office or
offices, and all other actions have been taken, in order to perfect (and
maintain the perfection of) the security interest granted hereby in respect of
the types of Collateral referred to in Section 1.1 hereof.

                                  ARTICLE III

                   SPECIAL PROVISIONS CONCERNING RECEIVABLES;
                  CONTRACT RIGHTS; INSTRUMENTS; CHATTEL PAPER

     3.1. Additional Representations and Warranties. As of the time when each
of its Receivables arises, each Assignor shall be deemed to have represented
and warranted that such Receivable, and all records, papers and documents
relating thereto (if any) are what they purport to be, and such Receivable will
evidence true and valid obligations of the account debtor named therein.

     3.2. Maintenance of Records. Each Assignor will keep and maintain at its
own cost and expense accurate records of its Receivables and Contracts,
including, but not limited to, originals of all documentation (including each
Contract) with respect thereto, records of all payments received, all credits
granted thereon, all merchandise returned and all other dealings therewith, and
such Assignor will make the same available on such Assignor's premises to the



                                      -6-
<PAGE>   8

Collateral Agent for inspection, at such Assignor's own cost and expense, at
any and all reasonable times upon prior notice to such Assignor. Upon the
occurrence and during the continuance of an Event of Default and at the request
of the Collateral Agent, such Assignor shall, at its own cost and expense,
deliver all tangible evidence of its Receivables and Contract Rights
(including, without limitation, all documents evidencing the Receivables and
all Contracts) and such books and records to the Collateral Agent or to its
representatives (copies of which evidence and books and records may be retained
by such Assignor). Upon the occurrence and during the continuance of an Event
of Default and if the Collateral Agent so directs, such Assignor shall legend,
in form and manner satisfactory to the Collateral Agent, the Receivables and
the Contracts, as well as books, records and documents (if any) of such
Assignor evidencing or pertaining to such Receivables and Contracts with an
appropriate reference to the fact that such Receivables and Contracts have been
assigned to the Collateral Agent and that the Collateral Agent has a security
interest therein.

     3.3. Direction to Account Debtors; Contracting Parties; etc. Upon the
occurrence and during the continuance of an Event of Default, and if the
Collateral Agent so directs any Assignor, such Assignor agrees (x) to cause all
payments on account of the Receivables and Contracts to be made directly to the
Cash Collateral Account, (y) that the Collateral Agent may, at its option,
directly notify the obligors with respect to any Receivables and/or under any
Contracts to make payments with respect thereto as provided in the preceding
clause (x), and (z) that the Collateral Agent may enforce collection of any
such Receivables and Contracts and may adjust, settle or compromise the amount
of payment thereof, in the same manner and to the same extent as such Assignor.
Without notice to or assent by any Assignor, the Collateral Agent may apply any
or all amounts then in, or thereafter deposited in, the Cash Collateral Account
which application shall be effected in the manner provided in Section 7.4 of
this Agreement; provided however, that at such time as no Default or Event of
Default shall be continuing, all funds in the Cash Collateral Account shall be
disbursed to the respective Assignor. The costs and expenses (including
reasonable attorneys' fees) of collection, whether incurred by an Assignor or
the Collateral Agent, shall be borne by the relevant Assignor. The Collateral
Agent shall deliver a copy of each notice referred to in the preceding clause
(y) to the relevant Assignor, provided that the failure by the Collateral Agent
to so notify such Assignor shall not affect the effectiveness of such notice or
the other rights of the Collateral Agent created by this Section 3.3.

     3.4. Modification of Terms; etc. Except in accordance with such Assignor's
ordinary course of business and consistent with reasonable business judgment,
no Assignor shall rescind or cancel any indebtedness evidenced by any
Receivable or under any Contract, or modify any term thereof or make any
adjustment with respect thereto, or extend or renew the same, or compromise or
settle any material dispute, claim, suit or legal proceeding relating thereto,
or sell any Receivable or Contract, or interest therein, without the prior
written consent of the Collateral Agent. Each Assignor will duly fulfill all
obligations on its part to be fulfilled under or in connection with the
Receivables and Contracts and will do nothing to impair the rights of the
Collateral Agent in the Receivables or Contracts.

     3.5. Collection. Each Assignor shall endeavor in accordance with
reasonable business practices to cause to be collected from the account debtor
named in each of its Receivables or obligor under any Contract, as and when due
(including, without limitation, 


                                      -7-
<PAGE>   9

amounts which are delinquent, such amounts to be collected in accordance with
generally accepted lawful collection procedures) any and all amounts owing
under or on account of such Receivable or Contract, and apply forthwith upon
receipt thereof all such amounts as are so collected to the outstanding balance
of such Receivable or under such Contract, except that, prior to the occurrence
of an Event of Default, any Assignor may allow in the ordinary course of
business as adjustments to amounts owing under its Receivables and Contracts
(i) an extension or renewal of the time or times of payment, or settlement for
less than the total unpaid balance, which such Assignor finds appropriate in
accordance with reasonable business judgment and (ii) a refund or credit due as
a result of returned or damaged merchandise or improperly performed services or
for other reasons which such Assignor finds appropriate in accordance with
reasonable business judgment. The reasonable costs and expenses (including,
without limitation, reasonable attorneys' fees) of collection, whether incurred
by an Assignor or the Collateral Agent, shall be borne by the relevant
Assignor.

     3.6. Instruments. If any Assignor owns or acquires any Instrument
constituting Collateral, such Assignor will within 10 Business Days notify the
Collateral Agent thereof, and upon request by the Collateral Agent will
promptly deliver such Instrument to the Collateral Agent appropriately endorsed
to the order of the Collateral Agent as further security hereunder.

     3.7. Assignors Remain Liable Under Receivables. Anything herein to the
contrary notwithstanding, the Assignors shall remain liable under each of the
Receivables to observe and perform all of the conditions and obligations to be
observed and performed by it thereunder, all in accordance with the terms of
any agreement giving rise to such Receivables and applicable law. Neither the
Collateral Agent nor any other Secured Creditor shall have any obligation or
liability under any Receivable (or any agreement giving rise thereto) by reason
of or arising out of this Agreement or the receipt by the Collateral Agent or
any other Secured Creditor of any payment relating to such Receivable pursuant
hereto, nor shall the Collateral Agent or any other Secured Creditor be
obligated in any manner to perform any of the obligations of any Assignor under
or pursuant to any Receivable (or any agreement giving rise thereto), to make
any payment, to make any inquiry as to the nature or the sufficiency of any
payment received by them or as to the sufficiency of any performance by any
party under any Receivable (or any agreement giving rise thereto), to present
or file any claim, to take any action to enforce any performance or to collect
the payment of any amounts which may have been assigned to them or to which
they may be entitled at any time or times.

     3.8. Assignors Remain Liable Under Contracts. Anything herein to the
contrary notwithstanding, the Assignors shall remain liable under each of the
Contracts to observe and perform all of the conditions and obligations to be
observed and performed by them thereunder, all in accordance with and pursuant
to the terms and provisions of each Contract and applicable law. Neither the
Collateral Agent nor any other Secured Creditor shall have any obligation or
liability under any Contract by reason of or arising out of this Agreement or
the receipt by the Collateral Agent or any other Secured Creditor of any
payment relating to such contract pursuant hereto, nor shall the Collateral
Agent or any other Secured Creditor be obligated in any manner to perform any
of the obligations of any Assignor under or pursuant to any Contract, to make
any payment, to make any inquiry as to the nature or the sufficiency of any
performance by any party under any Contract, to present or file any claim, to
take any action to enforce any performance or 


                                      -8-
<PAGE>   10

to collect the payment of any amounts which may have been assigned to them or
to which they may be entitled at any time or times.

     3.9. Further Actions. (a) Each Assignor will, at its own expense, make,
execute, endorse, acknowledge, file and/or deliver to the Collateral Agent from
time to time such vouchers, invoices, schedules, confirmatory assignments,
conveyances, financing statements, transfer endorsements, certificates, reports
and other assurances or instruments and take such further steps relating to its
Receivables, Contracts, Instruments and other property or rights covered by the
security interest hereby granted, as the Collateral Agent may reasonably
require.

     (b) Each Assignor agrees that in the event of any change in any
requirement of law occurring after the date hereof that affects in any manner
the Collateral Agent's rights of access to, or use or sale of the FCC Licenses
or the procedures necessary to enable the Collateral Agent to obtain such
rights of access, use or sale (including, without limitation, changes allowing
greater such access), each Assignor upon request of the Collateral Agent or the
Required Lenders, shall enter into an amendment to this Agreement in form and
substance satisfactory to the Collateral Agent to provide the Collateral Agent
with such rights to the greatest extent possible consistent with then
applicable requirements of law, including without limitation the Communications
Act and the FCC Rules.

                                   ARTICLE IV

                    SPECIAL PROVISIONS CONCERNING TRADEMARKS

     4.1. Additional Representations and Warranties. Each Assignor represents
and warrants that it is the true and lawful owner of or otherwise has the right
to use the registered Marks listed in Annex D hereto for such Assignor and that
said listed Marks include all United States marks and applications for United
States marks registered in the United States Patent and Trademark Office that
such Assignor owns or uses in connection with its business as of the date
hereof. Each Assignor represents and warrants that it owns, is licensed to use
or otherwise has the right to use, all Marks that it uses, except to the extent
that any such lack of ownership, license or right could not reasonably be
expected to have a material adverse effect on the business, operations,
property, assets, liabilities, condition (financial or otherwise) or prospects
of the Borrower or of the Borrower and its Subsidiaries taken as a whole. Each
Assignor further warrants that it has no knowledge of any third party claim
that any aspect of such Assignor's present or contemplated business operations
materially infringes or will materially infringe any trademark, service mark or
trade name. Each Assignor represents and warrants that it is the true and
lawful owner of or otherwise has the right to use all U.S. trademark
registrations and applications listed in Annex D hereto and that said
registrations are valid, subsisting, have not been cancelled and that such
Assignor is not aware of any third-party claim that any of said registrations
is invalid or unenforceable, or is not aware that there is any reason that any
of said registrations is invalid or unenforceable, or is not aware that there
is any reason that any of said applications will not pass to registration. Upon
the occurrence and continuance of an Event of Default, each Assignor hereby
grants to the Collateral Agent an absolute power of attorney to sign any
document which may be required by the United States Patent and Trademark Office
in 


                                      -9-
<PAGE>   11

order to effect an absolute assignment of all right, title and interest in each
Mark, and record the same.

     4.2. Licenses and Assignments. Except as otherwise permitted by the
Secured Debt Agreements, each Assignor hereby agrees not to divest itself of
any right under any Mark absent prior written approval of the Collateral Agent.

     4.3. Infringements. Each Assignor agrees, promptly upon learning thereof,
to notify the Collateral Agent in writing of the name and address of, and to
furnish such pertinent information that may be available with respect to, any
party who such Assignor believes is materially infringing or diluting or
otherwise violating in any material respect any of such Assignor's rights in
and to any Mark, or with respect to any party claiming that such Assignor's use
of any Mark violates in any material respect any property right of that party.
Each Assignor further agrees, unless otherwise agreed by the Collateral Agent,
to prosecute any Person materially infringing any Mark in accordance with
reasonable business practices.

     4.4. Preservation of Marks. Each Assignor agrees to use its Significant
Marks in interstate commerce during the time in which this Agreement is in
effect and to take all such other actions as are necessary to preserve such
Significant Marks as trademarks or service marks under the laws of the United
States.

     4.5. Maintenance of Registration. Each Assignor shall, at its own expense,
diligently process all documents required to maintain trademark registrations
material to its business, financial condition or property, including, but not
limited to, affidavits of use and applications for renewals of registration in
the United States Patent and Trademark Office for all of its registered
Significant Marks, and shall pay all fees and disbursements in connection
therewith and shall not abandon any such filing of affidavit of use or any such
application of renewal prior to the exhaustion of all administrative and
judicial remedies without prior written consent of the Collateral Agent.

     4.6. Future Registered Marks. If any Mark registration is issued hereafter
to any Assignor as a result of any application now or hereafter pending before
the United States Patent and Trademark Office, within 30 days of receipt of
such certificate, such Assignor shall deliver to the Collateral Agent a copy of
such certificate, and an assignment for security in such Mark, to the
Collateral Agent and at the expense of such Assignor, confirming the assignment
for security in such Mark to the Collateral Agent hereunder, the form of such
security to be substantially the same as the form hereof or in such other form
as may be reasonably satisfactory to the Collateral Agent.

     4.7. Remedies. If an Event of Default shall occur and be continuing, the
Collateral Agent may, by written notice to the relevant Assignor, take any or
all of the following actions: (i) declare the entire right, title and interest
of such Assignor in and to each of the Marks, together with all trademark
rights and rights of protection to the same, vested in the Collateral Agent for
the benefit of the Secured Creditors, in which event such rights, title and
interest shall immediately vest, in the Collateral Agent for the benefit of the
Secured Creditors, and the Collateral Agent shall be entitled to exercise the
power of attorney referred to in Section 4.1 


                                     -10-
<PAGE>   12

hereof to execute, cause to be acknowledged and notarized and record said
absolute assignment with the applicable agency; (ii) take and use or sell the
Marks and the goodwill of such Assignor's business symbolized by the Marks and
the right to carry on the business and use the assets of such Assignor in
connection with which the Marks have been used; and (iii) direct such Assignor
to refrain, in which event such Assignor shall refrain, from using the Marks in
any manner whatsoever, directly or indirectly, and such Assignor shall execute
such further documents that the Collateral Agent may reasonably request to
further confirm this and to transfer ownership of the Marks and registrations
and any pending trademark application in the United States Patent and Trademark
Office to the Collateral Agent.

                                   ARTICLE V

                         SPECIAL PROVISIONS CONCERNING
                     PATENTS, COPYRIGHTS AND TRADE SECRETS

     5.1. Additional Representations and Warranties. Each Assignor represents
and warrants that it is the true and lawful owner of all rights in (i) all
United States trade secrets and proprietary information necessary to operate
the business of the Assignor (the "Trade Secret Rights"), (ii) the Patents
listed in Annex E hereto for such Assignor and that said Patents include all
the United States patents and applications for United States patents that such
Assignor owns as of the date hereof and (iii) the Copyrights listed in Annex F
hereto for such Assignor and that said Copyrights constitute all the United
States copyrights registered with the United States Copyright Office and
applications to United States copyrights that such Assignor owns as of the date
hereof. Each Assignor further warrants that it has no knowledge of any third
party claim that any aspect of such Assignor's present or contemplated business
operations materially infringes or will materially infringe any patent or such
Assignor has misappropriated any trade secret or proprietary information. Upon
the occurrence and continuance of an Event of Default, each Assignor hereby
grants to the Collateral Agent an absolute power of attorney to sign any
document which may be required by the United States Patent and Trademark Office
in order to effect an absolute assignment of all right, title and interest in
each Patent, and to record the same.

     5.2. Licenses and Assignments. Except as otherwise permitted by the
Secured Debt Agreements, each Assignor hereby agrees not to divest itself of
any right under any Significant Patent or Significant Copyright absent prior
written approval of the Collateral Agent.

     5.3. Infringements. Each Assignor agrees, promptly upon learning thereof,
to furnish the Collateral Agent in writing with all pertinent information
available to such Assignor with respect to any material infringement,
contributing material infringement or active inducement to materially infringe
in any Patent or Copyright or to any claim that the practice of any Patent or
use of any Copyright violates any property right of a third party, or with
respect to any misappropriation of any Trade Secret Right or any claim that
practice of any Trade Secret Right violates any property right of a third
party. Each Assignor further agrees, absent direction of the Collateral Agent
to the contrary, diligently to prosecute any Person materially infringing any
Patent or Copyright or any Person materially misappropriating any Trade Secret
Right in accordance with such Assignor's reasonable business judgment.


                                     -11-
<PAGE>   13

     5.4. Maintenance of Patents or Copyright. At its own expense, each
Assignor shall make timely payment of all post-issuance fees required pursuant
to 35 U.S.C. ss. 41 to maintain in force its rights under each Significant
Patent or Significant Copyright, absent prior written consent of the Collateral
Agent.

     5.5. Prosecution of Patent and Copyright Applications. At its own expense,
each Assignor shall diligently prosecute all applications for (i) United States
Patents listed in Annex E hereto and (ii) Copyrights listed on Annex F hereto,
in each case for such Assignor and shall, consistent with reasonable business
judgment, not abandon any such application prior to exhaustion of all
administrative and judicial remedies, absent written consent of the Collateral
Agent, unless such Assignor shall determine that the prosecution thereof is no
longer desirable in the conduct of the business of such Assignor in that the
cessation of such prosecution is not disadvantageous in any material respect to
such Assignor.

     5.6. Other Patents and Copyrights. Within 30 days of the acquisition or
issuance of a United States Patent, registration of a Copyright, or acquisition
of a registered Copyright, or of filing of an application for a United States
Patent or Copyright, the relevant Assignor shall deliver to the Collateral
Agent a copy of said Copyright or certificate or registration of, or
application therefor, said Patents, as the case may be, with an assignment for
security as to such Patent or Copyright, as the case may be, to the Collateral
Agent and at the expense of such Assignor, confirming the assignment for
security, the form of such assignment for security to be substantially the same
as the form hereof or in such other form as may be reasonably satisfactory to
the Collateral Agent.

     5.7. Remedies. If an Event of Default shall occur and be continuing, the
Collateral Agent may by written notice to the relevant Assignor, take any or
all of the following actions: (i) declare the entire right, title, and interest
of such Assignor in each of the Patents and Copyrights vested in the Collateral
Agent for the benefit of the Secured Creditors, in which event such right,
title, and interest shall immediately vest in the Collateral Agent for the
benefit of the Secured Creditors, in which case the Collateral Agent shall be
entitled to exercise the power of attorney referred to in Section 5.1 hereof to
execute, cause to be acknowledged and notarized and to record said absolute
assignment with the applicable agency; (ii) take and practice or sell the
Patents and Copyrights; and (iii) direct such Assignor to refrain, in which
event such Assignor shall refrain, from practicing the Patents and using the
Copyrights directly or indirectly, and such Assignor shall execute such further
documents as the Collateral Agent may reasonably request further to confirm
this and to transfer ownership of the Patents and Copyrights to the Collateral
Agent for the benefit of the Secured Creditors.

                                   ARTICLE VI

                      PROVISIONS CONCERNING ALL COLLATERAL

     6.1. Protection of Collateral Agent's Security. Each Assignor will do
nothing to impair the rights of the Collateral Agent in the Collateral. Each
Assignor will at all times keep its Inventory and Equipment insured in favor of
the Collateral Agent, at such Assignor's own 


                                     -12-
<PAGE>   14

expense to the extent and in the manner provided in the Credit Agreement.
Except to the extent otherwise permitted to be retained by such Assignor or
applied by such Assignor pursuant to the terms of the Credit Agreement, the
Collateral Agent shall, at the time any proceeds of such insurance are
distributed to the Secured Creditors, apply such proceeds in accordance with
Section 7.4 hereof. Each Assignor assumes all liability and responsibility in
connection with the Collateral acquired by it and the liability of such
Assignor to pay the Obligations shall in no way be affected or diminished by
reason of the fact that such Collateral may be lost, destroyed, stolen, damaged
or for any reason whatsoever unavailable to such Assignor.

     6.2. Warehouse Receipts Non-negotiable. Each Assignor agrees that if any
warehouse receipt or receipt in the nature of a warehouse receipt is issued
with respect to any of its Inventory, such Assignor shall request that such
warehouse receipt or receipt in the nature thereof shall not be "negotiable"
(as such term is used in Section 7-104 of the UCC as in effect in any relevant
jurisdiction or under other relevant law).

     6.3. Further Actions. Each Assignor will, at its own expense and upon the
request of the Collateral Agent, make, execute, endorse, acknowledge, file
and/or deliver to the Collateral Agent from time to time such lists,
descriptions and designations of its Collateral, warehouse receipts, receipts
in the nature of warehouse receipts, bills of lading, documents of title,
vouchers, invoices, schedules, confirmatory assignments, conveyances, financing
statements, transfer endorsements, certificates, reports and other assurances
or instruments and take such further steps relating to the Collateral and other
property or rights covered by the security interest hereby granted, which the
Collateral Agent deems reasonably appropriate or advisable to perfect, preserve
or protect its security interest in the Collateral.

     6.4. Financing Statements. Each Assignor agrees to execute and deliver to
the Collateral Agent such financing statements, in form reasonably acceptable
to the Collateral Agent, as the Collateral Agent may from time to time
reasonably request or as are necessary or desirable in the opinion of the
Collateral Agent to establish and maintain a valid, enforceable, first priority
perfected security interest in the Collateral as provided herein and the other
rights and security contemplated hereby all in accordance with the UCC as
enacted in any and all relevant jurisdictions or any other relevant law. Each
Assignor will pay any applicable filing fees, recordation taxes and related
expenses relating to its Collateral. Each Assignor hereby authorizes the
Collateral Agent to file any such financing statements without the signature of
such Assignor where permitted by law.

     6.5. FCC Licenses. Each Assignor agrees to take any and all necessary and
appropriate commercially reasonable actions to preserve the FCC Licenses and to
otherwise prevent any adverse modification, revocation, suspension,
cancellation, or refusal by the FCC to renew any of the FCC Licenses except to
the extent such modification, revocation, suspension, cancellation or refusal
could not reasonably be expected to have a material adverse effect on the
business, operations, property, assets, liabilities, condition (financial or
otherwise) or prospects of the Borrower or of the Borrower and its Subsidiaries
taken a whole. To that end, each Assignor shall execute any and all documents
required by the FCC or any other governmental authority or requested by the
Borrower or the Collateral Agent, and to provide any information with its
possession reasonably requested by any of the foregoing, to ensure that any and
all applications,


                                     -13-
<PAGE>   15

reports, and other filings are made with the FCC or any other governmental
authority in a timely fashion and that no action is taken by the FCC, any
court, or any governmental authority which could have a material adverse effect
on any of the FCC Licenses.

                                  ARTICLE VII

                  REMEDIES UPON OCCURRENCE OF EVENT OF DEFAULT

     7.1. Remedies; Obtaining the Collateral Upon Default. Each Assignor agrees
that, if any Event of Default shall have occurred and be continuing, then and
in every such case, the Collateral Agent, in addition to any rights now or
hereafter existing under applicable law, shall have all rights as a secured
creditor under any UCC, and such additional rights and remedies to which a
secured creditor is entitled under the laws in effect, in all relevant
jurisdictions and may:

     (i) personally, or by agents or attorneys, immediately take possession of
the Collateral or any part thereof, from such Assignor or any other Person who
then has possession of any part thereof with or without notice or process of
law, and for that purpose may enter upon such Assignor's premises where any of
the Collateral is located and remove the same and use in connection with such
removal any and all services, supplies, aids and other facilities of such
Assignor;

     (ii) instruct the obligor or obligors on any agreement, instrument or
other obligation (including, without limitation, the Receivables and the
Contracts) constituting the Collateral to make any payment required by the
terms of such agreement, instrument or other obligation directly to the
Collateral Agent and may exercise any and all remedies of such Assignor in
respect of such Collateral;

     (iii) withdraw all monies, securities and instruments in the Cash
Collateral Account for application to the Obligations in accordance with
Section 7.4 hereof;

     (iv) sell, assign or otherwise liquidate any or all of the Collateral or
any part thereof in accordance with Section 7.2 hereof, or direct the relevant
Assignor to sell, assign or otherwise liquidate any or all of the Collateral or
any part thereof, and, in each case, take possession of the proceeds of any
such sale or liquidation;

     (v) take possession of the Collateral or any part thereof, by directing
the relevant Assignor in writing to deliver the same to the Collateral Agent at
any place or places designated by the Collateral Agent, in which event such
Assignor shall at its own expense:

         (x) forthwith cause the same to be moved to the place or places so 
     designated by the Collateral Agent and there delivered to the Collateral
     Agent;

         (y) store and keep any Collateral so delivered to the Collateral Agent
     at such place or places pending further action by the Collateral Agent as
     provided in Section 7.2 hereof; and


                                     -14-
<PAGE>   16

         (z) while the Collateral shall be so stored and kept, provide such 
     guards and maintenance services as shall be necessary to protect the same
     and to preserve and maintain the same in good condition; and

     (vi) license or sublicense, whether on an exclusive or nonexclusive basis,
any Marks, Patents or Copyrights included in the Collateral for such term and
on such conditions and in such manner as the Collateral Agent shall in its sole
judgment determine;

it being understood that each Assignor's obligation to so deliver the
Collateral is of the essence of this Agreement and that, accordingly, upon
application to a court of equity having jurisdiction, the Collateral Agent
shall be entitled to a decree requiring specific performance by such Assignor
of said obligation. By accepting the benefits of this Agreement, the Secured
Creditors agree that this Agreement may be enforced only by the action of the
Collateral Agent acting upon the instructions of the Required Secured Creditors
and that no other Secured Creditor shall have any right individually to seek to
enforce this Agreement or to realize upon the security to be granted hereby, it
being understood and agreed that such rights and remedies may be exercised by
the Collateral Agent for the benefit of the Secured Creditors upon the terms of
this Agreement and the Credit Agreement.

     7.2. Remedies; Disposition of the Collateral. If any Event of Default
shall have occurred and be continuing, then any Collateral repossessed by the
Collateral Agent under or pursuant to Section 7.1 hereof and any other
Collateral whether or not so repossessed by the Collateral Agent, may be sold,
assigned, leased or otherwise disposed of under one or more contracts or as an
entirety, and without the necessity of gathering at the place of sale the
property to be sold, and in general in such manner, at such time or times, at
such place or places and on such terms as the Collateral Agent may, in
compliance with any mandatory requirements of applicable law (including, in the
case of any disposition of the FCC Licenses or transfer of control thereof, the
Communication Act and the FCC Rules), determine to be commercially reasonable.
Subject to, in the case of any disposition of the FCC Licenses or transfer of
control thereof, receipt of any approvals required under the Communications Act
or the FCC Rules, any of the Collateral may be sold, leased or otherwise
disposed of, in the condition in which the same existed when taken by the
Collateral Agent or after any overhaul or repair at the expense of the relevant
Assignor which the Collateral Agent shall determine to be commercially
reasonable. Any such disposition which shall be a private sale or other private
proceedings permitted by such requirements shall be made upon not less than 10
days' prior written notice to the relevant Assignor specifying the time at
which such disposition is to be made and the intended sale price or other
consideration therefor, and shall be subject, for the 10 days after the giving
of such notice, to the right of the relevant Assignor or any nominee of such
Assignor to acquire the Collateral involved at a price or for such other
consideration at least equal to the intended sale price or other consideration
so specified. Any such disposition which shall be a public sale permitted by
such requirements shall be made upon not less than 10 days' prior written
notice to the relevant Assignor specifying the time and place of such sale and,
in the absence of applicable requirements of law, shall be by public auction
(which may, at the Collateral Agent's option, be subject to reserve), after
publication of notice of such auction (where required by applicable law) not
less than 10 days prior thereto. The Collateral Agent may, without notice or
publication, adjourn any public or private sale or cause the same to be
adjourned from time to time by announcement at the 


                                     -15-
<PAGE>   17

time and place fixed for the sale, and such sale may be made at any time or
place to which the sale may be so adjourned. To the extent permitted by any
such requirement of law, the Collateral Agent may bid for and become the
purchaser of the Collateral or any item thereof, offered for sale in accordance
with this Section 7.2 without accountability to the relevant Assignor. If,
under mandatory requirements of applicable law, the Collateral Agent shall be
required to make disposition of the Collateral within a period of time which
does not permit the giving of notice to the relevant Assignor as hereinabove
specified, the Collateral Agent need give such Assignor only such notice of
disposition as shall be reasonably practicable in view of such mandatory
requirements of applicable law. Each Assignor agrees to do or cause to be done
all such other acts and things as may be reasonably necessary to make such sale
or sales of all or any portion of the Collateral valid and binding and in
compliance with any and all applicable laws, regulations, orders, writs,
injunctions, decrees or awards of any and all courts, arbitrators or
governmental instrumentalities, domestic or foreign, having jurisdiction over
any such sale or sales, all at such Assignor's expense.

     7.3. Waiver of Claims. Except as otherwise provided in this Agreement,
EACH ASSIGNOR HEREBY WAIVES, TO THE EXTENT PERMITTED BY APPLICABLE LAW, NOTICE
AND JUDICIAL HEARING IN CONNECTION WITH THE COLLATERAL AGENT'S TAKING
POSSESSION OR THE COLLATERAL AGENT'S DISPOSITION OF ANY OF THE COLLATERAL,
INCLUDING, WITHOUT LIMITATION, ANY AND ALL PRIOR NOTICE AND HEARING FOR ANY
PREJUDGMENT REMEDY OR REMEDIES, and each Assignor hereby further waives, to the
extent permitted by law:

     (i) all damages occasioned by such taking of possession except any damages
which are the direct result of the Collateral Agent's gross negligence or
willful misconduct;

     (ii) all other requirements as to the time, place and terms of sale or
other requirements with respect to the enforcement of the Collateral Agent's
rights hereunder; and

     (iii) all rights of redemption, appraisement, valuation, stay, extension
or moratorium now or hereafter in force under any applicable law in order to
prevent or delay the enforcement of this Agreement or the absolute sale of the
Collateral or any portion thereof, and each Assignor, for itself and all who
may claim under it, insofar as it or they now or hereafter lawfully may, hereby
waives the benefit of all such laws.

Any sale of, or the grant of options to purchase, or any other realization
upon, any Collateral shall operate to divest all right, title, interest, claim
and demand, either at law or in equity, of the relevant Assignor therein and
thereto, and shall be a perpetual bar both at law and in equity against such
Assignor and against any and all Persons claiming or attempting to claim the
Collateral so sold, optioned or realized upon, or any part thereof, from,
through and under such Assignor.

     7.4. Application of Proceeds. (a) All moneys collected by the Collateral
Agent (or, to the extent the Pledge Agreement or any Additional Security
Document requires proceeds of collateral under such Security Document to be
applied in accordance with the provisions of this Agreement, the Pledgee under
such other Security Document) upon any sale or other disposition 


                                     -16-
<PAGE>   18

of the Collateral, together with all other moneys received by the Collateral
Agent hereunder, shall be applied as follows.

     (i) first, to the payment of all amounts owing the Collateral Agent of the
type described in clauses (iii) and (iv) of the definition of "Obligations";

     (ii) second, to the extent proceeds remain after the application pursuant
to the preceding clause (i), an amount equal to the outstanding Primary
Obligations shall be paid to the Secured Creditors as provided in Section
7.4(e) hereof, with each Secured Creditor receiving an amount equal to such
outstanding Primary Obligations or, if the proceeds are insufficient to pay in
full all such Primary Obligations, its Pro Rata Share of the amount remaining
to be distributed;

     (iii) third, to the extent proceeds remain after the application pursuant
to the preceding clauses (i) and (ii), an amount equal to the outstanding
Secondary Obligations shall be paid to the Secured Creditors as provided in
Section 7.4(e) hereof, with each Secured Creditor receiving an amount equal to
its outstanding Secondary Obligations or, if the proceeds are insufficient to
pay in full all such Secondary Obligations, its Pro Rata Share of the amount
remaining to be distributed; and

     (iv) fourth, to the extent proceeds remain after the application pursuant
to the preceding clauses (i) through (iii), inclusive, and following the
termination of this Agreement pursuant to Section 10.8(a) hereof, to the
relevant Assignor or to whomever may be lawfully entitled to receive such
surplus.

     (b) For purposes of this Agreement (x) "Pro Rata Share" shall mean, when
calculating a Secured Creditor's portion of any distribution or amount, that
amount (expressed as a percentage) equal to a fraction the numerator of which
is the then unpaid amount of such Secured Creditor's Primary Obligations or
Secondary Obligations, as the case may be, and the denominator of which is the
then outstanding amount of all Primary Obligations or Secondary Obligations, as
the case may be, (y) "Primary Obligations" shall mean (i) in the case of the
Credit Document Obligations, all principal of, and interest on, all Loans, all
Unpaid Drawings and all Fees and (ii) in the case of the Other Obligations, all
amounts due under such Interest Rate Protection Agreements or Other Hedging
Agreements (other than indemnities, fees (including, without limitation,
attorneys' fees) and similar obligations and liabilities) and (z) "Secondary
Obligations" shall mean all Obligations other than Primary Obligations.

     (c) When payments to Secured Creditors are based upon their respective Pro
Rata Shares, the amounts received by such Secured Creditors hereunder shall be
applied (for purposes of making determinations under this Section 7.4 only) (i)
first, to their Primary Obligations and (ii) second, to their Secondary
Obligations. If any payment to any Secured Creditor of its Pro Rata Share of
any distribution would result in overpayment to such Secured Creditor, such
excess amount shall instead be distributed in respect of the unpaid Primary
Obligations or Secondary Obligations, as the case may be, of the other Secured
Creditors, with each Secured Creditor whose Primary Obligations or Secondary
Obligations, as the case may be, have not been paid in full to receive an
amount equal to such excess amount multiplied by a fraction the numerator of
which is the unpaid Primary Obligations or Secondary Obligations, as 


                                     -17-
<PAGE>   19

the case may be, of such Secured Creditor and the denominator of which is the
unpaid Primary Obligations or Secondary Obligations, as the case may be, of all
Secured Creditors entitled to such distribution.

     (d) Each of the Secured Creditors, by their acceptance of the benefits
hereof, agrees and acknowledges that if the Lender Creditors are to receive a
distribution on account of undrawn amounts with respect to Letters of Credit
issued under the Credit Agreement (which shall only occur after all outstanding
Loans and Unpaid Drawings with respect to such Letters of Credit have been paid
in full), such amounts shall be paid to the Administrative Agent under the
Credit Agreement and held by it, for the equal and ratable benefit of the
Lender Creditors, as cash security for the repayment of Obligations owing to
the Lender Creditors as such. If any amounts are held as cash security pursuant
to the immediately preceding sentence, then upon the termination of all
outstanding Letters of Credit, and after the application of all such cash
security to the repayment of all Obligations owing to the Lender Creditors
after giving effect to the termination of all such Letters of Credit, if there
remains any excess cash, such excess cash shall be returned by the
Administrative Agent to the Collateral Agent for distribution in accordance
with Section 7.4(a) hereof.

     (e) All payments required to be made hereunder shall be made (x) if to the
Lender Creditors, to the Administrative Agent under the Credit Agreement for
the account of the Lender Creditors, and (y) if to the Other Creditors, to the
trustee, paying agent or other similar representative (each a "Representative")
for the Other Creditors or, in the absence of such a Representative, directly
to the Other Creditors.

     (f) For purposes of applying payments received in accordance with this
Section 7.4, the Collateral Agent shall be entitled to rely upon (i) the
Administrative Agent under the Credit Agreement and (ii) the Representative for
the Other Creditors or, in the absence of such a Representative, upon the Other
Creditors for a determination (which the Administrative Agent and each
Representative for any Other Creditors agree (or shall agree) to provide upon
request of the Collateral Agent) of the outstanding Primary Obligations and
Secondary Obligations owed to the Lender Creditors or the Other Creditors, as
the case may be. Unless it has actual knowledge (including by way of written
notice from a Lender Creditor or an Other Creditor) to the contrary, the
Administrative Agent and each Representative, in furnishing information
pursuant to the preceding sentence, and the Collateral Agent, in acting
hereunder, shall be entitled to assume that no Secondary Obligations are
outstanding. Unless it has actual knowledge (including by way of written notice
from an Other Creditor) to the contrary, the Collateral Agent, in acting
hereunder, shall be entitled to assume that no Interest Rate Protection
Agreements or Other Hedging Agreements are in existence.

     (g) It is understood that the Assignors shall remain jointly and severally
liable to the extent of any deficiency between the amount of the proceeds of
the Collateral and the aggregate amount of the Obligations.

     7.5. Remedies Cumulative. Each and every right, power and remedy hereby
specifically given to the Collateral Agent shall be in addition to every other
right, power and remedy specifically given under this Agreement, the other
Secured Debt Agreements or now or 


                                     -18-
<PAGE>   20

hereafter existing at law, in equity or by statute and each and every right,
power and remedy whether specifically herein given or otherwise existing may be
exercised from time to time or simultaneously and as often and in such order as
may be deemed expedient by the Collateral Agent. All such rights, powers and
remedies shall be cumulative and the exercise or the beginning of the exercise
of one shall not be deemed a waiver of the right to exercise any other or
others. No delay or omission of the Collateral Agent in the exercise of any
such right, power or remedy and no renewal or extension of any of the
Obligations shall impair any such right, power or remedy or shall be construed
to be a waiver of any Default or Event of Default or an acquiescence thereof.
No notice to or demand on any Assignor in any case shall entitle it to any
other or further notice or demand in similar or other circumstances or
constitute a waiver of any of the rights of the Collateral Agent to any other
or further action in any circumstances without notice or demand. In the event
that the Collateral Agent shall bring any suit to enforce any of its rights
hereunder and shall be entitled to judgment, then in such suit the Collateral
Agent may recover reasonable expenses, including reasonable attorneys' fees,
and the amounts thereof shall be included in such judgment.

     7.6. Discontinuance of Proceedings. In case the Collateral Agent shall
have instituted any proceeding to enforce any right, power or remedy under this
Agreement by foreclosure, sale, entry or otherwise, and such proceeding shall
have been discontinued or abandoned for any reason or shall have been
determined adversely to the Collateral Agent, then and in every such case the
relevant Assignor, the Collateral Agent and each holder of any of the
Obligations shall be restored to their former positions and rights hereunder
with respect to the Collateral subject to the security interest created under
this Agreement, and all rights, remedies and powers of the Collateral Agent
shall continue as if no such proceeding had been instituted.

                                  ARTICLE VIII

                                   INDEMNITY

     8.1. Indemnity. (a) Each Assignor jointly and severally agrees to
indemnify, reimburse and hold the Collateral Agent, each other Secured Creditor
and their respective successors, permitted assigns, employees, agents and
servants (hereinafter in this Section 8.1 referred to individually as
"Indemnitee," and collectively as "Indemnitees") harmless from any and all
liabilities, obligations, damages, injuries, penalties, claims, demands,
actions, suits, judgments and any and all costs, expenses or disbursements
(including reasonable attorneys' fees and expenses) (for the purposes of this
Section 8.1 the foregoing are collectively called "expenses") of whatsoever
kind and nature imposed on, asserted against or incurred by any of the
Indemnitees in any way relating to or arising out of this Agreement, any other
Secured Debt Agreement or any other document executed in connection herewith or
therewith or in any other way connected with the administration of the
transactions contemplated hereby or thereby or the enforcement of any of the
terms of, or the preservation of any rights under any thereof, or in any way
relating to or arising out of the manufacture, ownership, ordering, purchase,
delivery, control, acceptance, lease, financing, possession, operation,
condition, sale, return or other disposition, or use of the Collateral
(including, without limitation, latent or other defects, whether or not
discoverable), the violation of the laws of any country, state or other
governmental body or unit, any tort (including, 


                                     -19-
<PAGE>   21

without limitation, claims arising or imposed under the doctrine of strict
liability, or for or on account of injury to or the death of any Person
(including any Indemnitee), or property damage), or contract claim; provided
that no Indemnitee shall be indemnified pursuant to this Section 8.1(a) for
losses, damages or liabilities to the extent caused by the gross negligence or
willful misconduct of such Indemnitee. Each Assignor agrees that upon written
notice by any Indemnitee of the assertion of such a liability, obligation,
damage, injury, penalty, claim, demand, action, suit or judgment, the relevant
Assignor shall assume full responsibility for the defense thereof. Each
Indemnitee agrees to use its best efforts to promptly notify the relevant
Assignor of any such assertion of which such Indemnitee has knowledge.

     (b) Without limiting the application of Section 8.1(a) hereof, each
Assignor agrees, jointly and severally, to pay, or reimburse the Collateral
Agent for any and all reasonable fees, costs and expenses of whatever kind or
nature incurred in connection with the creation, preservation or protection of
the Collateral Agent's Liens on, and security interest in, the Collateral,
including, without limitation, all fees and taxes in connection with the
recording or filing of instruments and documents in public offices, payment or
discharge of any taxes or Liens upon or in respect of the Collateral, premiums
for insurance with respect to the Collateral and all other fees, costs and
expenses in connection with protecting, maintaining or preserving the
Collateral and the Collateral Agent's interest therein, whether through
judicial proceedings or otherwise, or in defending or prosecuting any actions,
suits or proceedings arising out of or relating to the Collateral.

     (c) Without limiting the application of Section 8.1(a) or (b) hereof, each
Assignor agrees, jointly and severally, to pay, indemnify and hold each
Indemnitee harmless from and against any loss, costs, damages and expenses
which such Indemnitee may suffer, expend or incur in consequence of or growing
out of any misrepresentation by any Assignor in this Agreement, any other
Secured Debt Agreement or in any writing contemplated by or made or delivered
pursuant to or in connection with this Agreement or any other Secured Debt
Agreement.

     (d) If and to the extent that the obligations of any Assignor under this
Section 8.1 are unenforceable for any reason, such Assignor hereby agrees to
make the maximum contribution to the payment and satisfaction of such
obligations which is permissible under applicable law.

     8.2. Indemnity Obligations Secured by Collateral; Survival. Any amounts
paid by any Indemnitee as to which such Indemnitee has the right to
reimbursement shall constitute Obligations secured by the Collateral. The
indemnity obligations of each Assignor contained in this Article VIII shall
continue in full force and effect notwithstanding the full payment of all of
the other Obligations and notwithstanding the full payment of all the Notes
issued under the Credit Agreement, the termination of all Interest Rate
Protection Agreements or Other Hedging Agreements and all Letters of Credit and
the payment of all other Obligations and notwithstanding the discharge thereof.


                                     -20-
<PAGE>   22

                                   ARTICLE IX

                                  DEFINITIONS

     The following terms shall have the meanings herein specified. Such
definitions shall be equally applicable to the singular and plural forms of the
terms defined.

     "Administrative Agent" shall have the meaning provided in the recitals of
this Agreement.

     "Agreement" shall mean this Security Agreement as the same may be
modified, supplemented or amended from time to time in accordance with its
terms.

     "Assignor" shall have the meaning provided in the first paragraph of this
Agreement.

     "Borrower" shall have the meaning provided in the recitals of this
Agreement.

     "Cash Collateral Account" shall mean a cash collateral account maintained
with, and in the sole dominion and control of, the Collateral Agent for the
benefit of the Secured Creditors.

     "Chattel Paper" shall have the meaning provided in the Uniform Commercial
Code as in effect on the date hereof in the State of New York.

     "Class" shall have the meaning provided in Section 10.2 of this Agreement.

     "Collateral" shall have the meaning provided in Section 1.1(a) of this
Agreement.

     "Collateral Agent" shall have the meaning provided in the first paragraph
of this Agreement.

     "Contract Rights" shall mean all rights of any Assignor under each
Contract, including, without limitation, (i) any and all rights to receive and
demand payments under any or all Contracts, (ii) any and all rights to receive
and compel performance under any or all Contracts and (iii) any and all other
rights, interests and claims now existing or in the future arising in
connection with any or all Contracts.

     "Contracts" shall mean all contracts between any Assignor and one or more
additional parties (including, without limitation, any Interest Rate Protection
Agreements or Other Hedging Agreements and any partnership agreements, joint
venture agreements, limited liability company agreements and licensing
agreements), but excluding any contract to the extent that the terms thereof
prohibit (after giving effect to any approvals or waivers) the assignment of,
or granting a security interest in, such contract (it being understood and
agreed, however, that notwithstanding the foregoing, all rights to payment for
money due or to become due pursuant to any such excluded contract shall be
subject to the security interests created by this Agreement).


                                     -21-
<PAGE>   23

     "Copyrights" shall mean any United States copyright owned by any Assignor,
including any registrations of any Copyrights, in the United States Copyright
Office or any foreign equivalent office, as well as any application for a
copyright registration now or hereafter made by any Assignor with the United
States Copyright Office or any foreign equivalent office.

     "Credit Agreement" shall have the meaning provided in the recitals of this
Agreement.

     "Credit Document Obligations" shall have the meaning provided in the
definition of "Obligations" in this Article IX.

     "Default" shall mean any event which, with notice or lapse of time, or
both, would constitute an Event of Default.

     "Documents" shall have the meaning provided in the Uniform Commercial Code
as in effect on the date hereof in the State of New York.

     "Equipment" shall mean any "equipment," as such term is defined in the
Uniform Commercial Code as in effect on the date hereof in the State of New
York, now or hereafter owned by any Assignor and, in any event, shall include,
but shall not be limited to, all machinery, equipment, furnishings, fixtures
and vehicles now or hereafter owned by any Assignor and any and all additions,
substitutions and replacements of any of the foregoing, wherever located,
together with all attachments, components, parts, equipment and accessories
installed thereon or affixed thereto.

     "Event of Default" shall mean any Event of Default under, and as defined
in, the Credit Agreement and shall in any event include, without limitation,
any payment default on any of the Other Obligations after the expiration of any
applicable grace period.

     "FCC License" shall have the meaning provided in Section 1.1 of this
Agreement.

     "General Intangibles" shall have the meaning provided in the Uniform
Commercial Code as in effect on the date hereof in the State of New York (and
shall include all partnership interests and all limited liability company and
membership interests).

     "Goods" shall have the meaning provided in the Uniform Commercial Code as
in effect on the date hereof in the State of New York.

     "Indemnitee" shall have the meaning provided in Section 8.1 of this
Agreement.

     "Instrument" shall have the meaning provided in the Uniform Commercial
Code as in effect on the date hereof in the State of New York.

     "Inventory" shall mean merchandise, inventory and goods, and all
additions, substitutions and replacements thereof, wherever located, together
with all goods, supplies, incidentals, packaging materials, labels, materials
and any other items used or usable in manufacturing, processing, packaging or
shipping same, in all stages of production -- from raw 


                                     -22-
<PAGE>   24

materials through work-in-process to finished goods -- and all products and
proceeds of whatever sort and wherever located and any portion thereof which
may be returned, rejected, reclaimed or repossessed by the Collateral Agent
from any Assignor's customers, and shall specifically include all "inventory"
as such term is defined in the Uniform Commercial Code as in effect on the date
hereof in the State of New York, now or hereafter owned by any Assignor.

     "Investment Property" shall have the meaning provided in the Uniform
Commercial Code as in effect on the date hereof in the State of New York.

     "Lender Creditors" shall have the meaning provided in the recitals of this
Agreement.

     "Lenders" shall have the meaning provided in the recitals of this
Agreement.

     "Liens" shall mean any security interest, mortgage, pledge, lien, claim,
charge, encumbrance, title retention agreement, lessor's interest in a
financing lease or analogous instrument in, of, or on any Assignor's property.

     "Marks" shall mean all right, title and interest in and to any trademarks,
service marks and trade names now held or hereafter acquired by any Assignor,
including any registration of any trademarks and service marks in the United
States Patent and Trademark Office or in any equivalent foreign office and any
trade dress including logos and/or designs used by any Assignor.

     "Obligations" shall mean (i) the full and prompt payment when due (whether
at the stated maturity, by acceleration or otherwise) of all obligations and
indebtedness (including, without limitation, indemnities, Fees and interest
thereon) of each Assignor to the Lender Creditors, whether now existing or
hereafter incurred under, arising out of, or in connection with the Credit
Agreement and the other Credit Documents to which such Assignor is a party
(including all such obligations and indebtedness of such Assignor under the
Subsidiaries Guaranty) and the due performance and compliance by such Assignor
with all of the terms, conditions and agreements contained in the Credit
Agreement and such other Credit Documents (all such obligations and liabilities
under this clause (i), except to the extent consisting of obligations or
indebtedness with respect to Interest Rate Protection Agreements or Other
Hedging Agreements, being herein collectively called the "Credit Document
Obligations"); (ii) the full and prompt payment when due (whether at the stated
maturity, by acceleration or otherwise) of all obligations and liabilities
owing by such Assignor to the Other Creditors under, or with respect to
(including by reason of the Subsidiaries Guaranty), any Interest Rate
Protection Agreement or Other Hedging Agreement, whether such Interest Rate
Protection Agreement or Other Hedging Agreement is now in existence or
hereafter arising, and the due performance and compliance by such Assignor with
all of the terms, conditions and agreements contained therein (all such
obligations and liabilities described in this clause (ii) being herein
collectively called the "Other Obligations"); (iii) any and all sums advanced
by the Collateral Agent in order to preserve the Collateral or preserve its
security interest in the Collateral; (iv) in the event of any proceeding for
the collection or enforcement of any indebtedness, obligations, or liabilities
of such Assignor referred to in clauses (i) and (ii) above, after an Event of
Default shall have occurred and be continuing, the reasonable expenses of
retaking, holding, preparing for sale or lease, selling or 


                                     -23-
<PAGE>   25

otherwise disposing of or realizing on the Collateral, or of any exercise by
the Collateral Agent of its rights hereunder, together with reasonable
attorneys' fees and court costs; and (v) all amounts paid by any Indemnitee as
to which such Indemnitee has the right to reimbursement under Section 8.1 of
this Agreement; it being acknowledged and agreed that the "Obligations" shall
include extensions of credit of the types described above, whether outstanding
on the date of this Agreement or extended from time to time after the date of
this Agreement.

     "Other Creditors" shall have the meaning provided in the recitals of this
Agreement.

     "Other Obligations" shall have the meaning provided in the definition of
"Obligations" in this Article IX.

     "Patents" shall mean any patent to which any Assignor now or hereafter has
title and any divisions or continuations thereof, as well as any application
for a patent now or hereafter made by any Assignor.

     "Permits" shall mean, to the extent permitted to be assigned by the terms
thereof or by applicable law, all licenses, permits, rights, orders, variances,
franchises or authorizations of or from any governmental authority or agency.

     "Primary Obligations" shall have the meaning provided in Section 7.4(b) of
this Agreement.

     "Pro Rata Share" shall have the meaning provided in Section 7.4(b) of this
Agreement.

     "Proceeds" shall have the meaning provided in the Uniform Commercial Code
as in effect in the State of New York on the date hereof or under other
relevant law and, in any event, shall include, but not be limited to, (i) any
and all proceeds of any insurance, indemnity, warranty or guaranty payable to
the Collateral Agent or any Assignor from time to time with respect to any of
the Collateral, (ii) any and all payments (in any form whatsoever) made or due
and payable to any Assignor from time to time in connection with any
requisition, confiscation, condemnation, seizure or forfeiture of all or any
part of the Collateral by any governmental authority (or any person acting
under color of governmental authority) and (iii) any and all other amounts from
time to time paid or payable under or in connection with any of the Collateral.

     "Receivables" shall mean any "account" as such term is defined in the
Uniform Commercial Code as in effect on the date hereof in the State of New
York, now or hereafter owned by any Assignor and, in any event, shall include,
but shall not be limited to, all of such Assignor's rights to payment for goods
sold or leased or services performed by such Assignor, whether now in existence
or arising from time to time hereafter, including, without limitation, rights
evidenced by an account, note, contract, security agreement, chattel paper, or
other evidence of indebtedness or security, together with (a) all security
pledged, assigned, hypothecated or granted to or held by such Assignor to
secure the foregoing, (b) all of any Assignor's right, title and interest in
and to any goods, the sale of which gave rise thereto, (c) all


                                     -24-
<PAGE>   26

guarantees, endorsements and indemnifications on, or of, any of the foregoing,
(d) all powers of attorney for the execution of any evidence of indebtedness or
security or other writing in connection therewith, (e) all books, records,
ledger cards, and invoices relating thereto, (f) all evidences of the filing of
financing statements and other statements and the registration of other
instruments in connection therewith and amendments thereto, notices to other
creditors or secured parties, and certificates from filing or other
registration officers, (g) all credit information, reports and memoranda
relating thereto and (h) all other writings related in any way to the
foregoing.

     "Representative" shall have the meaning provided in Section 7.4(e) of this
Agreement.

     "Required Secured Creditors" shall mean (i) the Required Lenders (or, to
the extent required by Section 13.12 of the Credit Agreement, each of the
Lenders) under the Credit Agreement so long as any Credit Document Obligations
remain outstanding and (ii) in any situation not covered by the preceding
clause (i), the holders of a majority of the outstanding principal amount of
the Other Obligations.

     "Requisite Creditors" shall have the meaning provided in Section 10.2 of
this Agreement.

     "Secondary Obligations" shall have the meaning provided in Section 7.4(b)
of this Agreement.

     "Secured Creditors" shall have the meaning provided in the recitals of
this Agreement.

     "Secured Debt Agreements" shall mean and include this Agreement, the other
Credit Documents and the Interest Rate Protection Agreements and Other Hedging
Agreements.

     "Significant Copyright" shall mean each Copyright listed in Annex F hereto
of any Assignor that is material to its business, financial condition or
property.

     "Significant Mark" shall mean each Mark listed on Annex D hereto of any
Assignor that is material to its business, financial condition or property.

     "Significant Patent" shall mean each Patent listed in Annex E hereto for
any Assignor that is material to its business, financial condition or property.

     "Syndication Agent" shall have the meaning provided in the recitals of
this Agreement.

     "Termination Date" shall have the meaning provided in Section 10.8 of this
Agreement.

     "Trade Secret Rights" shall have the meaning provided in Section 5.1 of
this Agreement.


                                     -25-
<PAGE>   27

     "UCC" shall mean the Uniform Commercial Code as in effect from time to
time in the relevant jurisdiction.

                                   ARTICLE X

                                 MISCELLANEOUS

     10.1. Notices. Except as otherwise specified herein, all notices,
requests, demands or other communications to or upon the respective parties
hereto shall be deemed to have been duly given or made when delivered to the
party to which such notice, request, demand or other communication is required
or permitted to be given or made under this Agreement, addressed as follows:

     (a)  if to any Assignor, at the address set forth opposite such Assignor's
signature below;

     (b)  if to the Collateral Agent, at:

          Bankers Trust Company
          One Bankers Trust Plaza
          New York, New York  10006
          Attention: Greg Shefrin
          Tel. No.: (212) 250-1724
          Fax. No.: (212) 250-7218

     (c)  if to any Lender Creditor, at such address as such Lender Creditor
shall have specified in the Credit Agreement;

     (d)  if to any Other Creditor, at such address as such Other Creditor
shall have specified in writing to each Assignor and the Collateral Agent;

or at such other address as shall have been furnished in writing by any Person
described above to the party required to give notice hereunder.

     10.2. Waiver; Amendment. None of the terms and conditions of this
Agreement may be changed, waived, modified or varied in any manner whatsoever
unless in writing duly signed by each Assignor directly effected thereby and
the Collateral Agent (with the written consent of the Required Secured
Creditors); provided, however, that any change, waiver, modification or
variance affecting the rights and benefits of a single Class of Secured
Creditors (and not all Secured Creditors in a like or similar manner) shall
require the written consent of the Requisite Creditors of such affected Class.
For the purpose of this Agreement, the term "Class" shall mean each class of
Secured Creditors, i.e., whether (x) the Lender Creditors as holders of the
Credit Document Obligations or (y) the Other Creditors as the holders of the
Other Obligations. For the purpose of this Agreement, the term "Requisite
Creditors" of any Class shall mean each of (x) with respect to the Credit
Document Obligations, the Required Lenders and (y) with respect to the Other
Obligations, the holders of at least a majority of all obligations 


                                     -26-
<PAGE>   28

outstanding from time to time under the Interest Rate Protection Agreements or
Other Hedging Agreements.

     10.3. Obligations Absolute. The obligations of each Assignor hereunder
shall remain in full force and effect without regard to, and shall not be
impaired by, (a) any bankruptcy, insolvency, reorganization, arrangement,
readjustment, composition, liquidation or the like of such Assignor; (b) any
exercise or non-exercise, or any waiver of, any right, remedy, power or
privilege under or in respect of this Agreement or any other Secured Debt
Agreement; or (c) any amendment to or modification of any Secured Debt
Agreement or any security for any of the Obligations; whether or not such
Assignor shall have notice or knowledge of any of the foregoing.

     10.4. Successors and Assigns. This Agreement shall be binding upon each
Assignor and its successors and assigns (although no Assignor may assign its
rights and obligations hereunder except in accordance with the provisions of
the Secured Debt Agreements) and shall inure to the benefit of and be
enforceable by the Collateral Agent and the Secured Creditors and their
respective successors and assigns. All agreements, statements, representations
and warranties made by each Assignor herein or in any certificate or other
instrument delivered by such Assignor or on its behalf under this Agreement
shall be considered to have been relied upon by the Secured Creditors and shall
survive the execution and delivery of this Agreement and the other Secured Debt
Agreements regardless of any investigation made by the Secured Creditors or on
their behalf.

     10.5. Headings Descriptive. The headings of the several sections of this
Agreement are inserted for convenience only and shall not in any way affect the
meaning or construction of any provision of this Agreement.

     10.6. Governing Law. THIS AGREEMENT AND THE RIGHTS AND OBLIGATIONS OF THE
PARTIES HEREUNDER SHALL BE CONSTRUED IN ACCORDANCE WITH AND BE GOVERNED BY THE
LAW OF THE STATE OF NEW YORK.

     10.7. Assignor's Duties. It is expressly agreed, anything herein contained
to the contrary notwithstanding, that each Assignor shall remain liable to
perform all of the obligations, if any, assumed by it with respect to the
Collateral and the Collateral Agent shall not have any obligations or
liabilities with respect to any Collateral by reason of or arising out of this
Agreement, nor shall the Collateral Agent be required or obligated in any
manner to perform or fulfill any of the obligations of any Assignor under or
with respect to any Collateral.

     10.8. Termination; Release. (a) After the Termination Date, this Agreement
shall terminate (provided that all indemnities set forth herein including,
without limitation, in Section 8.1 hereof shall survive such termination) and
the Collateral Agent, at the request and expense of the respective Assignor,
will promptly execute and deliver to such Assignor a proper instrument or
instruments (including Uniform Commercial Code termination statements on form
UCC-3) acknowledging the satisfaction and termination of this Agreement, and
will duly assign, transfer and deliver to such Assignor (without recourse and
without any representation or warranty) such of the Collateral as may be in the
possession of the Collateral Agent and as has not 


                                     -27-
<PAGE>   29

theretofore been sold or otherwise applied or released pursuant to this
Agreement. As used in this Agreement, "Termination Date" shall mean the date
upon which the Total Commitment and all Interest Rate Protection Agreements and
Other Hedging Agreements have been terminated, no Note is outstanding (and all
Loans have been repaid in full), all Letters of Credit have been terminated and
all Obligations then owing have been paid in full.

     (b) In the event that any part of the Collateral is sold in connection
with a sale permitted by Section 9.02 of the Credit Agreement (other than a
sale to any Assignor or a Subsidiary thereof) or otherwise released at the
direction of the Required Secured Creditors and the proceeds of such sale or
sales or from such release are applied in accordance with the provisions of the
Credit Agreement, to the extent required to be so applied, such Collateral will
be sold free and clear of the Liens created by this Agreement and the
Collateral Agent, at the request and expense of the relevant Assignor, will
duly assign, transfer and deliver to such Assignor (without recourse and
without any representation or warranty) such of the Collateral as is then being
(or has been) so sold or released and as may be in the possession of the
Collateral Agent and has not theretofore been released pursuant to this
Agreement.

     (c) At any time that an Assignor desires that the Collateral Agent take
any action to acknowledge or give effect to any release of Collateral pursuant
to the foregoing Section 10.8(a) or (b), such Assignor shall deliver to the
Collateral Agent a certificate signed by a principal executive officer of such
Assignor stating that the release of the respective Collateral is permitted
pursuant to Section 10.8(a) or (b), as the case may be.

     10.9. Counterparts. This Agreement may be executed in any number of
counterparts and by the different parties hereto on separate counterparts, each
of which when so executed and delivered shall be an original, but all of which
shall together constitute one and the same instrument. A set of counterparts
executed by all the parties hereto shall be lodged with each Assignor and the
Collateral Agent.

     10.10. Severability. Any provision of this Agreement which is prohibited
or unenforceable in any jurisdiction shall, as to such jurisdiction, be
ineffective to the extent of such prohibition or unenforceability without
invalidating the remaining provisions hereof, and any such prohibition or
unenforceability in any jurisdiction shall not invalidate or render
unenforceable such provision in any other jurisdiction.

     10.11. The Collateral Agent. The Collateral Agent will hold in accordance
with this Agreement all items of the Collateral at any time received under this
Agreement. It is expressly understood and agreed that the obligations of the
Collateral Agent as holder of the Collateral and interests therein and with
respect to the disposition thereof, and otherwise under this Agreement, are
only those expressly set forth in this Agreement and in Section 12 of the
Credit Agreement. The Collateral Agent shall act hereunder and thereunder on
the terms and conditions set forth herein and in Section 12 of the Credit
Agreement.

     10.12. Additional Assignors. It is understood and agreed that any
Subsidiary of the Borrower that is required to execute a counterpart of this
Agreement after the date hereof 


                                     -28-
<PAGE>   30

pursuant to the Credit Agreement shall become an Assignor hereunder by
executing a counterpart hereof and delivering the same to the Collateral Agent.

     10.13. Actions Requiring FCC Approval. (a) Notwithstanding anything to the
contrary contained in this Agreement, or any of the documents executed pursuant
hereto, the Collateral Agent will not take any action pursuant to this
Agreement, or any such documents, which would constitute or result in any
assignment of any FCC License or any transfer of control of the holder of any
FCC License if such assignment of such FCC License or such transfer of control
would require under then existing law (including the Communications Act or the
FCC Rules) the prior approval of the FCC, without first obtaining such
approval. In connection with this Section 10.13, the Collateral Agent shall be
entitled to rely upon the advise of FCC counsel of the Collateral Agent's
choice with respect to such assignment or transfer (including to determine
whether any such assignment or transfer has occurred or will occur and whether
or not prior approval of the FCC is required) whether or not the advice
rendered is ultimately determined to have been accurate.

     (b) If an Event of Default shall have occurred and be continuing, each
Assignor shall take any action which the Collateral Agent may request in the
exercise of its rights and remedies under this Agreement in order to transfer
or assign the Collateral to the Collateral Agent or to such one or more third
parties as the Collateral Agent may designate, or to a combination of the
foregoing. To enforce the provisions of this Section 10.13, after an Event of
Default shall have occurred and be continuing, the Collateral Agent is
empowered to request, and each Assignor hereby agrees to authorize, the
appointment of a receiver or trustee from any court of competent jurisdiction.
Such receiver or trustee shall be instructed to seek from the FCC (and any
other governmental authority) consent or approval as may be required by the
Communications Act and the FCC Rules for any assignment of the assets of or
transfer of control of any or all of the FCC Licenses or any Person whose
stock, partnership interest or other equity interest is subject to this
Agreement to the extent required for such trustee or receiver to assume such
control for the purpose of seeking a bona fide purchaser to whom such FCC
Licenses or other Collateral will be assigned or control of such entity
ultimately will be transferred. Each Assignor agrees, at such Assignor's cost
and expense, to cooperate with any such trustee or receiver, or at such
trustee's or receiver's direction, such purchaser and with the Collateral Agent
in the preparation, execution and filing of any applications or other documents
and providing any information that may be necessary or helpful in obtaining the
FCC's consent to the assignment or transfer to such trustee or receiver, or at
such trustee's or receiver's direction, such purchaser of the Collateral or any
of the FCC Licenses. To the fullest extent permitted under applicable law, each
Assignor hereby agrees to consent to and authorize any such transfer of control
upon the request of the Collateral Agent after the occurrence of and during the
continuation of an Event of Default and, without limiting any rights of the
Collateral Agent under this Agreement, to authorize the Collateral Agent to
nominate a trustee or receiver to assume control of the Collateral, subject
only to any required consent, approval or order of a court of competent
jurisdiction, the FCC or other governmental authorities, for the purposes of
effectuating the transactions contemplated in this Section 10.13(b). Such
trustee or receiver shall have all the rights and powers as provided to it by
law, court order or to the Collateral Agent under this Agreement. Each Assignor
shall cooperate fully and use its best efforts in obtaining the consent


                                     -29-
<PAGE>   31

of the FCC and the approval or consent of each other governmental authority
required to effectuate the foregoing.

     (c) Each Assignor shall use its best efforts to assist in obtaining the
consent or approval of the FCC, any court, and any other governmental
authority, if required, for any action or transaction contemplated by this
Agreement, including, without limitation, the preparation, execution and filing
with the FCC of the transferor's or assignor's portion of any application or
applications for consent to the transfer of control or assignment necessary or
appropriate under the FCC's policies, rules and regulations for approval of the
transfer or assignments of all or any portion of the Collateral.

     (d) Each Assignor hereby acknowledges and agrees that the FCC Licenses are
unique assets and that a violation of such Assignor's covenant to cooperate
with respect to the obtainment of any regulatory consents would result in
irreparable harm to the Collateral Agent for which monetary damages are not
readily ascertainable. Each Assignor further agrees that, because of the unique
nature of its undertakings in this Section 10.13, the same may be specifically
enforced, and such Assignor hereby waives, and agrees to waive, any claim or
defense that the Collateral Agent would have an adequate remedy at law for the
breach of such undertakings and any requirement for posting of a bond or other
certificate.

     (e) Without limiting the obligations of any Assignor hereunder in any
respect, each Assignor further agrees that if such Assignor, upon or after the
occurrence and during the continuance of an Event of Default, should fail or
refuse to execute any application or other document necessary or appropriate to
obtain any governmental consent necessary or appropriate for the exercise of
any right of the Collateral Agent hereunder, such Assignor agrees that, to the
fullest extent permitted by the Communications Act and the FCC Rules, such
application or other document may be executed on such Assignor's behalf by the
clerk of any court or other forum in any competent jurisdiction without notice
to such Assignor.

     (f) This Section 10.13 shall not limit any other rights of the Collateral
Agent or the Secured Creditors available under applicable law and consistent
with the Communications Act and the FCC Rules.

     10.14. Consent and Waiver. EACH ASSIGNOR HEREBY IRREVOCABLY CONSENTS TO
AND WAIVES ANY RIGHT TO OBJECT TO OR OTHERWISE CONTEST THE APPOINTMENT OF A
RECEIVER AFTER THE OCCURRENCE AND DURING THE CONTINUANCE OF AN EVENT OF
DEFAULT. EACH ASSIGNOR HEREBY GRANTS SUCH CONSENT AND WAIVER KNOWINGLY AFTER
HAVING DISCUSSED THE IMPLICATIONS THEREOF WITH COUNSEL, ACKNOWLEDGES THAT THE
UNCONTESTED RIGHT TO HAVE A RECEIVER APPOINTED FOR THE FOREGOING PURPOSES IS
CONSIDERED ESSENTIAL BY THE COLLATERAL AGENT AND THE SECURED CREDITORS IN
CONNECTION WITH THE ENFORCEMENT OF THEIR RIGHTS AND REMEDIES HEREUNDER AND
UNDER THE OTHER CREDIT DOCUMENTS, AND THE AVAILABILITY OF SUCH APPOINTMENT AS A
REMEDY UNDER THE FOREGOING CIRCUMSTANCES WAS A MATERIAL FACTOR IN INDUCING THE
LENDERS TO MAKE (AND COMMIT TO MAKE) LOANS TO THE 


                                     -30-
<PAGE>   32

BORROWER AND IN INDUCING THE OTHER CREDITORS TO ENTER INTO INTEREST RATE
PROTECTION AGREEMENTS AND OTHER HEDGING AGREEMENTS WITH THE BORROWER, AND
AGREES TO ENTER INTO ANY AND ALL STIPULATIONS IN ANY LEGAL ACTIONS, OR
AGREEMENTS OR OTHER INSTRUMENTS IN CONNECTION WITH THE FOREGOING AND TO
COOPERATE FULLY WITH THE COLLATERAL AGENT AND THE REQUIRED LENDERS, OR, THE
HOLDERS OF A MAJORITY OF THE OTHER OBLIGATIONS, AS THE CASE MAY BE, IN
CONNECTION WITH THE ASSUMPTION AND EXERCISE OF CONTROL BY THE RECEIVER OVER ALL
OR ANY PORTION OF THE COLLATERAL.

                                     * * *


                                     -31-
<PAGE>   33

     IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
executed and delivered by their duly authorized officers as of the date first
above written.

Address:

3333 Lee Parkway, Suite 100                   PAGEMART WIRELESS, INC.,
Dallas, TX  75219                               as an Assignor
Attention:  G. Clay Myers
Telephone:  (214) 765-3510
Telecopier:  (214) 765-4961                   By
                                                -------------------------------
                                                Name:
                                                Title:


Accepted and Agreed to:

BANKERS TRUST COMPANY,
  as Collateral Agent


By    
  --------------------------------
  Name:
  Title:




<PAGE>   34

                                                                   ANNEX A
                                                                      TO
                                                             SECURITY AGREEMENT
                                  



                      SCHEDULE OF CHIEF EXECUTIVE OFFICES
                           AND OTHER RECORD LOCATIONS


<PAGE>   35

                                                                   ANNEX B
                                                                      TO
                                                             SECURITY AGREEMENT
                                  



                 SCHEDULE OF INVENTORY AND EQUIPMENT LOCATIONS


<PAGE>   36

                                                                   ANNEX C
                                                                      TO
                                                             SECURITY AGREEMENT
                                  



                     SCHEDULE OF TRADE AND FICTITIOUS NAMES

<PAGE>   37

                                                                   ANNEX D
                                                                      TO
                                                             SECURITY AGREEMENT



                               SCHEDULE OF MARKS

<PAGE>   38


                                                                   ANNEX E
                                                                      TO
                                                             SECURITY AGREEMENT
                                  



                              SCHEDULE OF PATENTS

<PAGE>   39

                                                                   ANNEX F
                                                                      TO
                                                             SECURITY AGREEMENT




                             SCHEDULE OF COPYRIGHTS

<PAGE>   40


                                                                   ANNEX G
                                                                      TO
                                                             SECURITY AGREEMENT

                                  



                        ASSIGNMENT OF SECURITY INTEREST
                    IN UNITED STATES TRADEMARKS AND PATENTS

     FOR GOOD AND VALUABLE CONSIDERATION, receipt and sufficiency of which are
hereby acknowledged, [Name of Assignor], a __________ corporation (the
"Assignor") with principal offices at ____________________________, hereby
assigns and grants to Bankers Trust Company, as Collateral Agent, with
principal offices at One Bankers Trust Plaza, 130 Liberty Street, New York, New
York 10006 (the "Assignee"), a security interest in (i) all of the Assignor's
right, title and interest in and to the United States trademarks, trademark
registrations and trademark applications (the "Marks") set forth on Schedule A
attached hereto, (ii) all of the Assignor's rights, title and interest in and
to the United States patents (the "Patents") set forth on Schedule B attached
hereto, in each case together with (iii) all Proceeds (as such term is defined
in the Security Agreement referred to below) and products of the Marks and
Patents, (iv) the goodwill of the businesses with which the Marks are
associated and (v) all causes of action arising prior to or after the date
hereof for infringement of any of the Marks and Patents or unfair competition
regarding the same.

     THIS ASSIGNMENT is made to secure the satisfactory performance and payment
of all the Obligations of the Assignor, as such term is defined in the Security
Agreement among the Assignor, the other assignors from time to time party
thereto and the Assignee, dated as of March 23, 1999 (as amended from time to
time, the "Security Agreement"). Upon the occurrence of the Termination Date
(as defined in the Security Agreement), the Assignee shall, upon such
satisfaction, execute, acknowledge, and deliver to the Assignor an instrument
in writing releasing the security interest in the Marks and Patents acquired
under this Assignment.



<PAGE>   41

                                                                        ANNEX G
                                                                         Page 2


     This Assignment has been granted in conjunction with the security interest
granted to the Assignee under the Security Agreement. The rights and remedies
of the Assignee with respect to the security interest granted herein are
without prejudice to, and are in addition to those set forth in the Security
Agreement, all terms and provisions of which are incorporated herein by
reference. In the event that any provisions of this Assignment are deemed to
conflict with the Security Agreement, the provisions of the Security Agreement
shall govern.



<PAGE>   42
                                                                        ANNEX G
                                                                         Page 3


     IN WITNESS WHEREOF, the undersigned have executed this Assignment as of
the ____ day of _________, ____.

                                     [NAME OF ASSIGNOR], Assignor



                                     By
                                        ---------------------------------------
                                        Name:
                                        Title:



                                     BANKERS TRUST COMPANY,
                                       as Collateral Agent, Assignee


                                     By
                                        ---------------------------------------
                                        Name:
                                        Title:

<PAGE>   43

STATE OF NEW YORK        )
                         ) ss.:
COUNTY OF NEW YORK       )



     On this ____ day of _________, ____, before me personally came ________
_________________ who, being by me duly sworn, did state as follows: that [s]he
is _______________ of [Name of Assignor], that [s]he is authorized to execute
the foregoing Assignment on behalf of said corporation and that [s]he did so by
authority of the Board of Directors of said corporation.

                                               -------------------------------
                                                         Notary Public



<PAGE>   44


STATE OF NEW YORK        )
                         ) ss.:
COUNTY OF NEW YORK       )



     On this ____ day of _________, ____, before me personally came ________
_____________________ who, being by me duly sworn, did state as follows: that
[s]he is __________________ of Bankers Trust Company that [s]he is authorized
to execute the foregoing Assignment on behalf of said corporation and that
[s]he did so by authority of the Board of Directors of said corporation.

                                                -------------------------------
                                                         Notary Public

<PAGE>   45

                                                                     Schedule A


<TABLE>
<CAPTION>
                                U.S. TRADEMARKS
                                ---------------

MARK                                REG. NO.                      REG. DATE
- ----                                --------                      ---------
<S>                             <C>                               <C>

</TABLE>

<PAGE>   46

                                                                     SCHEDULE B


<TABLE>
<CAPTION>
                                U.S. TRADEMARKS
                                ---------------

PATENT                             PATENT NO.                      ISSUE DATE
- ------                             ----------                      ----------
<S>                             <C>                                <C>


</TABLE>


<PAGE>   47

                                                                   ANNEX H
                                                                      TO
                                                             SECURITY AGREEMENT




                        ASSIGNMENT OF SECURITY INTEREST
                          IN UNITED STATES COPYRIGHTS



     WHEREAS, [Name of Assignor], a _______________ corporation (the
"Assignor"), having its chief executive office at ___________________________,
___________________________, is the owner of all right, title and interest in
and to the United States copyrights and associated United States copyright
registrations and applications for registration set forth in Schedule A
attached hereto;

     WHEREAS, BANKERS TRUST COMPANY, as Collateral Agent, having its principal
offices at One Bankers Trust Plaza, 130 Liberty Street, New York, New York
10006 (the "Assignee"), desires to acquire a security interest in said
copyrights and copyright registrations and applications therefor; and

     WHEREAS, the Assignor is willing to assign to the Assignee, and to grant
to the Assignee, a security interest in and lien upon the copyrights and
copyright registrations and applications therefor described above.

     NOW, THEREFORE, for good and valuable consideration, the receipt of which
is hereby acknowledged, and subject to the terms and conditions of the Security
Agreement, dated as of March 23, 1999, made by the Assignor, the other
assignors from time to time party thereto and the Assignee (as amended from
time to time, the "Security Agreement"), the Assignor hereby assigns to the
Assignee, and grants to the Assignee, a security interest in the copyrights and
copyright registrations and applications therefor set forth in Schedule A
attached hereto.

     This Assignment has been granted in conjunction with the security interest
granted to the Assignee under the Security Agreement. The rights and remedies
of the Assignee with respect to the security interest granted herein are
without prejudice to, and are in addition to those set forth in the Security
Agreement, all terms and provisions of which are incorporated herein by
reference. In the event that any provisions of this Assignment are deemed to
conflict with the Security Agreement, the provisions of the Security Agreement
shall govern.

<PAGE>   48

     Executed at New York, New York, the __ day of _________, ____.

                                     [NAME OF ASSIGNOR], as Assignor


                                     By
                                       ----------------------------------------
                                       Name:
                                       Title:



                                     BANKERS TRUST COMPANY, as
                                       Collateral Agent, Assignee


                                     By
                                       ----------------------------------------
                                       Name:
                                       Title:



<PAGE>   49

STATE OF NEW YORK        )
                         ) ss.:
COUNTY OF NEW YORK       )


     On this __ day of _________, ____, before me personally came ___________
_______________, who being duly sworn, did depose and say that [s]he is
___________________ of [Name of Assignor], that [s]he is authorized to execute
the foregoing Assignment on behalf of said corporation and that [s]he did so by
authority of the Board of Directors of said corporation.

                                                   -------------------------
                                                          Notary Public



<PAGE>   50

STATE OF NEW YORK        )
                         ) ss.:
COUNTY OF NEW YORK       )


     On this ____ day of _________, ____, before me personally came ________
_____________________ who, being by me duly sworn, did state as follows: that
[s]he is __________________ of Bankers Trust Company that [s]he is authorized
to execute the foregoing Assignment on behalf of said corporation and that
[s]he did so by authority of the Board of Directors of said corporation.

                                                ----------------------------
                                                       Notary Public

<PAGE>   51

                                                                     SCHEDULE A

<TABLE>
<CAPTION>
                                U.S. COPYRIGHTS
                                ---------------

         REGISTRATION             PUBLICATION
            NUMBERS                   DATE                   COPYRIGHT TITLE
         ------------           ---------------              ---------------
<S>                             <C>                          <C>


</TABLE>


<PAGE>   52

                               TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                                                               Page
                                                                                                               ----
<S>      <C>                                                                                                   <C>
ARTICLE I

         SECURITY INTERESTS.......................................................................................2

         1.1.  Grant of Security Interests........................................................................2
         1.2.  Power of Attorney..................................................................................3

ARTICLE II

         GENERAL REPRESENTATIONS, WARRANTIES AND COVENANTS........................................................3

         2.1.  Necessary Filings..................................................................................4
         2.2.  No Liens...........................................................................................4
         2.3.  Other Financing Statements.........................................................................4
         2.4.  Chief Executive Office, Record Locations...........................................................4
         2.5.  Location of Inventory and Equipment................................................................5
         2.6.  Recourse...........................................................................................5
         2.7.  Trade Names; Change of Name........................................................................6

ARTICLE III

         SPECIAL PROVISIONS CONCERNING RECEIVABLES;
         CONTRACT RIGHTS; INSTRUMENTS; CHATTEL PAPER..............................................................6

         3.1.  Additional Representations and Warranties..........................................................6
         3.2.  Maintenance of Records.............................................................................6
         3.3.  Direction to Account Debtors; Contracting Parties; etc.............................................7
         3.4.  Modification of Terms; etc.........................................................................7
         3.5.  Collection.........................................................................................7
         3.6.  Instruments........................................................................................8
         3.7.  Assignors Remain Liable Under Receivables..........................................................8
         3.9.  Further Actions....................................................................................8

ARTICLE IV

         SPECIAL PROVISIONS CONCERNING TRADEMARKS.................................................................9

         4.1.  Additional Representations and Warranties..........................................................9
         4.2.  Licenses and Assignments...........................................................................9
         4.3.  Infringements.....................................................................................10
         4.4.  Preservation of Marks.............................................................................10
         4.5.  Maintenance of Registration.......................................................................10
</TABLE>

                                      (i)
<PAGE>   53

<TABLE>
<S>      <C>                                                                                                   <C>
         4.6.  Future Registered Marks...........................................................................10
         4.7.  Remedies..........................................................................................10

ARTICLE V

         SPECIAL PROVISIONS CONCERNING
         PATENTS, COPYRIGHTS AND TRADE SECRETS...................................................................11

         5.1.  Additional Representations and Warranties.........................................................11
         5.2.  Licenses and Assignments..........................................................................11
         5.3.  Infringements.....................................................................................11
         5.4.  Maintenance of Patents or Copyright...............................................................11
         5.5.  Prosecution of Patent and Copyright Applications..................................................12
         5.6.  Other Patents and Copyrights......................................................................12
         5.7.  Remedies..........................................................................................12

ARTICLE VI

         PROVISIONS CONCERNING ALL COLLATERAL....................................................................12

         6.1.  Protection of Collateral Agent's Security.........................................................12
         6.2.  Warehouse Receipts Non-negotiable.................................................................13
         6.3.  Further Actions...................................................................................13
         6.4.  Financing Statements..............................................................................13
         6.5.  FCC Licenses......................................................................................13

ARTICLE VII

         REMEDIES UPON OCCURRENCE OF EVENT OF DEFAULT............................................................14

         7.1.  Remedies; Obtaining the Collateral Upon Default...................................................14
         7.2.  Remedies; Disposition of the Collateral...........................................................15
         7.3.  Waiver of Claims..................................................................................16
         7.4.  Application of Proceeds...........................................................................16
         7.5.  Remedies Cumulative...............................................................................18
         7.6.  Discontinuance of Proceedings.....................................................................19

ARTICLE VIII

         INDEMNITY...............................................................................................19

         8.1.  Indemnity.........................................................................................19
         8.2.  Indemnity Obligations Secured by Collateral; Survival.............................................20
</TABLE>

                                     (ii)
<PAGE>   54

<TABLE>
<S>      <C>                                                                                                   <C>
ARTICLE IX

         DEFINITIONS.............................................................................................20


ARTICLE X

         MISCELLANEOUS...........................................................................................26

         10.1.  Notices..........................................................................................26
         10.2.  Waiver; Amendment................................................................................26
         10.3.  Obligations Absolute.............................................................................27
         10.4.  Successors and Assigns...........................................................................27
         10.5.  Headings Descriptive.............................................................................27
         10.6.  Governing Law....................................................................................27
         10.7.  Assignor's Duties................................................................................27
         10.8.  Termination; Release.............................................................................27
         10.9.  Counterparts.....................................................................................28
         10.10.  Severability....................................................................................28
         10.11.  The Collateral Agent............................................................................28
         10.12.  Additional Assignors............................................................................28
         10.13.  Actions Requiring FCC Approval..................................................................29
         10.14.   Consent and Waiver.............................................................................30
</TABLE>

ANNEX A    Schedule of Chief Executive Offices/Record Locations
ANNEX B    Schedule of Inventory and Equipment Locations 
ANNEX C    Schedule of Trade and Fictitious Names 
ANNEX D    Schedule of Marks
ANNEX E    Schedule of Patents 
ANNEX F    Schedule of Copyrights
ANNEX G    Form of Assignment of Security Interest in Certain United States
           Trademarks and Patents
ANNEX H    Form of Assignment of Security Interest in United States Copyrights


                                     (iii)

<PAGE>   1
                                                                    EXHIBIT 10.7

                                PLEDGE AGREEMENT


     PLEDGE AGREEMENT (as amended, modified or supplemented from time to time,
this "Agreement"), dated as of March 23, 1999, made by each of the undersigned
pledgors (each a "Pledgor" and, together with any other entity that becomes a
party hereto pursuant to Section 26 hereof, the "Pledgors") to Bankers Trust
Company, as Collateral Agent (the "Pledgee"), for the benefit of the Secured
Creditors (as defined below). Except as otherwise defined herein, capitalized
terms used herein and defined in the Credit Agreement (as defined below) shall
be used herein as therein defined.


                              W I T N E S S E T H:


     WHEREAS, PageMart Wireless, Inc. (the "Borrower"), the lenders from time
to time party thereto (the "Lenders"), Bankers Trust Company, as Administrative
Agent (together with any successor Administrative Agent, the "Administrative
Agent"), Morgan Stanley Senior Funding, Inc., as Syndication Agent, and Bankers
Trust Company and Morgan Stanley Senior Funding, Inc., as Co-Arrangers have
entered into a Credit Agreement, dated as of March 23, 1999 (as amended,
modified or supplemented from time to time, the "Credit Agreement"), providing
for the making of Loans to, and the issuance of Letters of Credit for the
account of, the Borrower as contemplated therein (the Lenders, the
Administrative Agent, the Syndication Agent, the Issuing Lender and the Pledgee
are herein called the "Lender Creditors");

     WHEREAS, the Borrower may at any time and from time to time enter into one
or more Interest Rate Protection Agreements or Other Hedging Agreements with
one or more Lenders or any affiliate thereof (each such Lender or affiliate,
even if the respective Lender subsequently ceases to be a Lender under the
Credit Agreement for any reason, together with such Lender's or affiliate's
successors and assigns, if any, collectively, the "Other Creditors," and
together with the Lender Creditors, the "Secured Creditors");

     WHEREAS, it is a condition to the making of Loans to, and the issuance of
Letters of Credit for the account of, the Borrower under the Credit Agreement
that each Pledgor shall have executed and delivered to the Pledgee this
Agreement; and

     WHEREAS, each Pledgor desires to enter into this Agreement in order to
satisfy the condition described in the preceding paragraph;

     NOW, THEREFORE, in consideration of the foregoing and other benefits
accruing to each Pledgor, the receipt and sufficiency of which are hereby
acknowledged, each Pledgor hereby makes the following representations and
warranties to the Pledgee for the benefit of the Secured Creditors and hereby
covenants and agrees with the Pledgee for the benefit of the Secured Creditors
as follows:

     1. SECURITY FOR OBLIGATIONS. This Agreement is made by each Pledgor for
the benefit of the Secured Creditors to secure:

<PAGE>   2

          (i) the full and prompt payment when due (whether at the stated
     maturity, by acceleration or otherwise) of all obligations and
     indebtedness (including, without limitation, indemnities, Fees and
     interest thereon) of such Pledgor to the Lender Creditors, whether now
     existing or hereafter incurred under, arising out of, or in connection
     with the Credit Agreement and the other Credit Documents to which such
     Pledgor is a party and the due performance and compliance by such Pledgor
     with all of the terms, conditions and agreements contained in the Credit
     Agreement and in such other Credit Documents (all such obligations and
     liabilities under this clause (i), except to the extent consisting of
     obligations or indebtedness with respect to Interest Rate Protection
     Agreements or Other Hedging Agreements, being herein collectively called
     the "Credit Document Obligations");

          (ii) the full and prompt payment when due (whether at the stated
     maturity, by acceleration or otherwise) of all obligations and liabilities
     owing by such Pledgor to the Other Creditors under, or with respect to,
     any Interest Rate Protection Agreement or Other Hedging Agreement, whether
     such Interest Rate Protection Agreement or Other Hedging Agreement is now
     in existence or hereafter arising, and the due performance and compliance
     by such Pledgor with all of the terms, conditions and agreements contained
     therein (all such obligations and liabilities described in this clause
     (ii) being herein collectively called the "Other Obligations");

          (iii) any and all sums advanced by the Pledgee in order to preserve
     the Collateral (as hereinafter defined) or preserve its security interest
     in the Collateral;

          (iv) in the event of any proceeding for the collection or enforcement
     of any indebtedness, obligations or liabilities of such Pledgor referred
     to in clauses (i), (ii) and (iii) above, after an Event of Default (which
     term to mean and include any Event of Default under, and as defined in,
     the Credit Agreement or any payment default by the Borrower under any
     Interest Rate Protection Agreement or Other Hedging Agreement and shall,
     in any event, include, without limitation, any payment default (after the
     expiration of any applicable grace period) on any of the Obligations (as
     hereinafter defined)) shall have occurred and be continuing, the
     reasonable expenses of retaking, holding, preparing for sale or lease,
     selling or otherwise disposing of or realizing on the Collateral, or of
     any exercise by the Pledgee of its rights hereunder, together with
     reasonable attorneys' fees and court costs; and

          (v) all amounts paid by any Secured Creditor as to which such Secured
     Creditor has the right to reimbursement under Section 11 of this
     Agreement;

     all such obligations, liabilities, sums and expenses set forth in clauses
(i) through (v) of this Section 1 being herein collectively called the
"Obligations," it being acknowledged and agreed that the "Obligations" shall
include extensions of credit of the types described above, whether outstanding
on the date of this Agreement or extended from time to time after the date of
this Agreement.


                                      -2-
<PAGE>   3

     2. DEFINITIONS. (a) Unless otherwise defined herein, all capitalized terms
used herein and defined in the Credit Agreement shall be used herein as therein
defined. Reference to singular terms shall include the plural and vice versa.

     (b) The following capitalized terms used herein shall have the definitions
specified below:

     "Administrative Agent" has the meaning set forth in the Recitals hereto.

     "Adverse Claim" has the meaning given such term in Section 8-102(a)(1) of
the UCC.

     "Agreement" has the meaning set forth in the first paragraph hereof.

     "Certificated Security" has the meaning given such term in Section
8-102(a)(4) of the UCC.

     "Clearing Corporation" has the meaning given such term in Section
8-102(a)(5) of the UCC.

     "Collateral" has the meaning set forth in Section 3.1 hereof.

     "Collateral Accounts" means any and all accounts established and
maintained by the Pledgee in the name of any Pledgor to which Collateral may be
credited.

     "Credit Agreement" has the meaning set forth in the Recitals hereto.

     "Credit Document Obligations" has the meaning set forth in Section 1
hereof.

     "Domestic Corporation" has the meaning set forth in the definition of
"Stock."

     "Event of Default" has the meaning set forth in Section 1 hereof.

     "Financial Asset" has the meaning given such term in Section 8-102(a)(9)
of the UCC.

     "Foreign Corporation" has the meaning set forth in the definition of
"Stock."

     "Indemnitees" has the meaning set forth in Section 11 hereof.

     "Instrument" has the meaning given such term in Section 9-105(1)(i) of the
UCC.

     "Investment Property" has the meaning given such term in Section 9-115(f)
of the UCC.

     "Lender Creditors" has the meaning set forth in the Recitals hereto.

     "Lenders" has the meaning set forth in the Recitals hereto.


                                      -3-
<PAGE>   4

     "Limited Liability Company Assets" means all assets, whether tangible or
intangible and whether real, personal or mixed (including, without limitation,
all limited liability company capital and interest in other limited liability
companies), at any time owned or represented by any Limited Liability Company
Interest.

     "Limited Liability Company Interests" means the entire limited liability
company membership interest at any time owned by any Pledgor in any limited
liability company.

     "Non-Voting Stock" means all capital stock which is not Voting Stock.

     "Notes" means all intercompany notes among the Borrower and its
Subsidiaries and all other promissory notes from time to time issued to, or
held by, any Pledgor, provided that any such promissory note issued by an
executive officer of any Pledgor may be excluded from this definition so long
as the aggregate principal amount of such note does not exceed $500,000.

     "Obligations" has the meaning set forth in Section 1 hereof.

     "Other Creditors" has the meaning set forth in the Recitals hereto.

     "Other Obligations" has the meaning set forth in Section 1 hereof.

     "Partnership Assets" means all assets, whether tangible or intangible and
whether real, personal or mixed (including, without limitation, all partnership
capital and interest in other partnerships), at any time owned or represented
by any Partnership Interest.

     "Partnership Interest" means the entire general partnership interest or
limited partnership interest at any time owned by any Pledgor in any general
partnership or limited partnership.

     "Pledged Notes" has the meaning set forth in Section 3.5 hereof.

     "Pledgee" has the meaning set forth in the first paragraph hereof.

     "Pledgor" has the meaning set forth in the first paragraph hereof.

     "Proceeds" has the meaning given such term in Section 9-306(l) of the UCC.

     "Required Lenders" has the meaning given such term in the Credit
Agreement.

     "Secured Creditors" has the meaning set forth in the Recitals hereto.

     "Secured Debt Agreements" has the meaning set forth in Section 5 hereof.

     "Securities Account" has the meaning given such term in Section 8-501(a)
of the UCC.

     "Securities Act" means the Securities Act of 1933, as amended, as in
effect from time to time.


                                      -4-
<PAGE>   5

     "Security" and "Securities" has the meaning given such term in Section
8-102(a)(15) of the UCC and shall in any event include all Stock and Notes (to
the extent same constitute "Securities" under Section 8-102(a)(15)).

     "Security Entitlement" has the meaning given such term in Section
8-102(a)(17) of the UCC.

     "Stock" means (x) with respect to corporations incorporated under the laws
of the United States or any State or territory thereof (each a "Domestic
Corporation"), all of the issued and outstanding shares of capital stock of any
corporation at any time owned by any Pledgor of any Domestic Corporation and
(y) with respect to corporations not Domestic Corporations (each a "Foreign
Corporation"), all of the issued and outstanding shares of capital stock at any
time owned by any Pledgor of any Foreign Corporation.

     "Termination Date" has the meaning set forth in Section 21 hereof.

     "UCC" means the Uniform Commercial Code as in effect in the State of New
York from time to time; provided that all references herein to specific
sections or subsections of the UCC are references to such sections or
subsections, as the case may be, of the Uniform Commercial Code as in effect in
the State of New York on the date hereof. "Uncertificated Security" has the
meaning given such term in Section 8-102(a)(18) of the UCC.

     "Voting Stock" means all classes of capital stock of any Foreign
Corporation entitled to vote.

     3. PLEDGE OF SECURITIES, ETC.

     3.1 Pledge. To secure the Obligations now or hereafter owed or to be
performed by such Pledgor, each Pledgor does hereby grant, pledge and assign to
the Pledgee for the benefit of the Secured Creditors, and does hereby create a
continuing security interest in favor of the Pledgee for the benefit of the
Secured Creditors in, all of the right, title and interest in and to the
following, whether now existing or hereafter from time to time acquired
(collectively, the "Collateral"):

          (a) each of the Collateral Accounts, including any and all assets of
     whatever type or kind deposited by such Pledgor in such Collateral
     Account, whether now owned or hereafter acquired, existing or arising,
     including, without limitation, all Financial Assets, Investment Property,
     moneys, checks, drafts, Instruments, Securities or interests therein of
     any type or nature deposited or required by the Credit Agreement or any
     other Secured Debt Agreement to be deposited in such Collateral Account,
     and all investments and all certificates and other Instruments (including
     depository receipts, if any) from time to time representing or evidencing
     the same, and all dividends, interest, distributions, cash and other
     property from time to time received, receivable or otherwise distributed
     in respect of or in exchange for any or all of the foregoing;


                                      -5-
<PAGE>   6

          (b) all Securities of such Pledgor from time to time;

          (c) all Limited Liability Company Interests of such Pledgor from time
     to time and all of its right, title and interest in each limited liability
     company to which each such interest relates, whether now existing or
     hereafter acquired, including, without limitation:

               (A) all the capital thereof and its interest in all profits,
          losses, Limited Liability Company Assets and other distributions to
          which such Pledgor shall at any time be entitled in respect of such
          Limited Liability Company Interests;

               (B) all other payments due or to become due to such Pledgor in
          respect of Limited Liability Company Interests, whether under any
          limited liability company agreement, operating agreement or
          otherwise, whether as contractual obligations, damages, insurance
          proceeds or otherwise;

               (C) all of its claims, rights, powers, privileges, authority,
          options, security interests, liens and remedies, if any, under any
          limited liability company agreement or operating agreement, or at law
          or otherwise in respect of such Limited Liability Company Interests;

               (D) all present and future claims, if any, of such Pledgor
          against any such limited liability company for moneys loaned or
          advanced, for services rendered or otherwise;

               (E) all of such Pledgor's rights under any limited liability
          company agreement or operating agreement or at law to exercise and
          enforce every right, power, remedy, authority, option and privilege
          of such Pledgor relating to such Limited Liability Company Interests,
          including any power to terminate, cancel or modify any limited
          liability company agreement or operating agreement, to execute any
          instruments and to take any and all other action on behalf of and in
          the name of any of such Pledgor in respect of such Limited Liability
          Company Interests and any such limited liability company, to make
          determinations, to exercise any election (including, but not limited
          to, election of remedies) or option or to give or receive any notice,
          consent, amendment, waiver or approval, together with full power and
          authority to demand, receive, enforce, collect or receipt for any of
          the foregoing or for any Limited Liability Company Asset, to enforce
          or execute any checks, or other instruments or orders, to file any
          claims and to take any action in connection with any of the foregoing
          (with all of the foregoing rights only to be exercisable upon the
          occurrence and during the continuation of an Event of Default); and

               (F) all other property hereafter delivered in substitution for
          or in addition to any of the foregoing, all certificates and
          instruments representing or evidencing such other property and all
          cash, securities, interest, dividends, rights and other property at
          any time and from time to time received, receivable or otherwise
          distributed in respect of or in exchange for any or all thereof;


                                      -6-
<PAGE>   7

          (d) all Partnership Interests of such Pledgor from time to time and
     all of its right, title and interest in each partnership to which each
     such interest relates, whether now existing or hereafter acquired,
     including, without limitation:

               (A) all the capital thereof and its interest in all profits,
          losses, Partnership Assets and other distributions to which such
          Pledgor shall at any time be entitled in respect of such Partnership
          Interests;

               (B) all other payments due or to become due to such Pledgor in
          respect of Partnership Interests, whether under any partnership
          agreement, operating agreement or otherwise, whether as contractual
          obligations, damages, insurance proceeds or otherwise;

               (C) all of its claims, rights, powers, privileges, authority,
          options, security interests, liens and remedies, if any, under any
          partnership agreement or operating agreement, or at law or otherwise
          in respect of such Partnership Interests;

               (D) all present and future claims, if any, of such Pledgor
          against any such partnership for moneys loaned or advanced, for
          services rendered or otherwise;

               (E) all of such Pledgor's rights under any partnership agreement
          or operating agreement or at law to exercise and enforce every right,
          power, remedy, authority, option and privilege of such Pledgor
          relating to such Partnership Interests, including any power to
          terminate, cancel or modify any partnership agreement or operating
          agreement, to execute any instruments and to take any and all other
          action on behalf of and in the name of any of such Pledgor in respect
          of such Partnership Interests and any such partnership, to make
          determinations, to exercise any election (including, but not limited
          to, election of remedies) or option or to give or receive any notice,
          consent, amendment, waiver or approval, together with full power and
          authority to demand, receive, enforce, collect or receipt for any of
          the foregoing or for any Partnership Asset, to enforce or execute any
          checks, or other instruments or orders, to file any claims and to
          take any action in connection with any of the foregoing (with all of
          the foregoing rights only to be exercisable upon the occurrence and
          during the continuation of an Event of Default); and

               (F) all other property hereafter delivered in substitution for
          or in addition to any of the foregoing, all certificates and
          instruments representing or evidencing such other property and all
          cash, securities, interest, dividends, rights and other property at
          any time and from time to time received, receivable or otherwise
          distributed in respect of or in exchange for any or all thereof;

          (e) all Security Entitlements of such Pledgor from time to time in
     any and all of the foregoing;


                                      -7-
<PAGE>   8

          (f) all Financial Assets and Investment Property of such Pledgor from
     time to time; and

          (g) all Proceeds of any and all of the foregoing.

     Notwithstanding anything to the contrary contained in this Section 3.1,
(x) no Pledgor (to the extent that it is the Borrower or a Domestic Subsidiary
of the Borrower) shall be required at any time to pledge hereunder more than
65% of the Voting Stock of any Foreign Corporation and (y) each Pledgor shall
be required to pledge hereunder 100% of any Non-Voting Stock at any time and
from time to time acquired by such Pledgor of any Foreign Corporation.

     3.2. Procedures. (a) To the extent that any Pledgor at any time or from
time to time owns, acquires or obtains any right, title or interest in any
Collateral, such Collateral shall automatically (and without the taking of any
action by the respective Pledgor) be pledged pursuant to Section 3.1 of this
Agreement and, in addition thereto, such Pledgor shall (to the extent provided
below) take the following actions as set forth below (as promptly as
practicable and, in any event, within 10 Business Days after it obtains such
Collateral) for the benefit of the Pledgee and the Secured Creditors:

          (i) with respect to a Certificated Security (other than a
     Certificated Security credited on the books of a Clearing Corporation),
     the respective Pledgor shall physically deliver such Certificated Security
     to the Pledgee, endorsed to the Pledgee or endorsed in blank;

          (ii) with respect to an Uncertificated Security (other than an
     Uncertificated Security credited on the books of a Clearing Corporation),
     the respective Pledgor shall cause the issuer of such Uncertificated
     Security to duly authorize and execute, and deliver to the Pledgee, an
     agreement for the benefit of the Pledgee and the Secured Creditors
     substantially in the form of Annex G hereto (appropriately completed to
     the reasonable satisfaction of the Pledgee and with such modifications, if
     any, as shall be reasonably satisfactory to the Pledgee) pursuant to which
     such issuer agrees to comply with any and all instructions originated by
     the Pledgee without further consent by the registered owner and not to
     comply with instructions regarding such Uncertificated Security (and any
     Partnership Interests and Limited Liability Company Interests issued by
     such issuer) originated by any other Person other than a court of
     competent jurisdiction;

          (iii) with respect to a Certificated Security, Uncertificated
     Security, Partnership Interest or Limited Liability Company Interest
     credited on the books of a Clearing Corporation (including a Federal
     Reserve Bank, Participants Trust Company or The Depository Trust Company),
     the respective Pledgor shall promptly notify the Pledgee thereof and shall
     promptly take all actions required (i) to comply with the applicable rules
     of such Clearing Corporation and (ii) to perfect the security interest of
     the Pledgee under applicable law (including, in any event, under Sections
     9-115 (4)(a) and (b), 9-115 (1)(e) and 8-106 (d) of the UCC). The Pledgor
     further agrees to take such actions as the Pledgee deems necessary or
     desirable to effect the foregoing;


                                      -8-
<PAGE>   9

          (iv) with respect to a Partnership Interest or a Limited Liability
     Company Interest (other than a Partnership Interest or Limited Liability
     Interest credited on the books of a Clearing Corporation), (1) if such
     Partnership Interest or Limited Liability Company Interest is represented
     by a certificate, the procedure set forth in Section 3.2(a)(i) hereof, and
     (2) if such Partnership Interest or Limited Liability Company Interest is
     not represented by a certificate, the procedure set forth in Section
     3.2(a)(ii) hereof;

          (v) with respect to any Note, physical delivery of such Note to the
     Pledgee, endorsed to the Pledgee or endorsed in blank; and

          (vi) with respect to cash, (i) upon the request of the Pledgee,
     establishment by the Pledgee of a cash account in the name of such Pledgor
     over which the Pledgee shall have exclusive and absolute control and
     dominion (and no withdrawals or transfers may be made therefrom by any
     Person except with the prior written consent of the Pledgee) and (ii)
     deposit of such cash in such cash account.

     (b) In addition to the actions required to be taken pursuant to proceeding
Section 3.2(a) hereof, each Pledgor shall take the following additional actions
with respect to the Securities and Collateral (as defined below):

          (i) with respect to all Collateral of such Pledgor whereby or with
     respect to which the Pledgee may obtain "control" thereof within the
     meaning of Section 8-106 of the UCC (or under any provision of the UCC as
     same may be amended or supplemented from time to time, or under the laws
     of any relevant State other than the State of New York), the respective
     Pledgor shall take all actions as may be requested from time to time by
     the Pledgee so that "control" of such Collateral is obtained and at all
     times held by the Pledgee; and

          (ii) each Pledgor shall from time to time cause appropriate financing
     statements (on Form UCC-1 or other appropriate form) under the Uniform
     Commercial Code as in effect in the various relevant States, covering all
     Collateral hereunder (with the form of such financing statements to be
     satisfactory to the Pledgee), to be filed in the relevant filing offices
     so that at all times the Pledgee has a security interest in all Investment
     Property and other Collateral which is perfected by the filing of such
     financing statements (in each case to the maximum extent perfection by
     filing may be obtained under the laws of the relevant States, including,
     without limitation, Section 9-115(4)(b) of the UCC).

     3.3 Subsequently Acquired Collateral. If any Pledgor shall acquire (by
purchase, stock dividend or otherwise) any additional Collateral at any time or
from time to time after the date hereof, such Collateral shall automatically
(and without any further action being required to be taken) be subject to the
pledge and security interests created pursuant to Section 3.1 hereof and,
furthermore, the Pledgor will promptly thereafter take (or cause to be taken)
all action with respect to such Collateral in accordance with the procedures
set forth in Section 3.2 hereof, and will promptly thereafter deliver to the
Pledgee (i) a certificate executed by a principal executive officer of such
Pledgor describing such Collateral and certifying that the same has been duly
pledged in favor of the Pledgee (for the benefit of the Secured Creditors)
hereunder and (ii) 


                                      -9-
<PAGE>   10

supplements to Annexes A through F hereto as are necessary to cause such
annexes to be complete and accurate at such time. Without limiting the
foregoing, each Pledgor shall be required to pledge hereunder any shares of
stock at any time and from time to time after the date hereof acquired by such
Pledgor of any Foreign Corporation, provided that (x) no Pledgor (to the extent
that it is the Borrower or a Domestic Subsidiary of the Borrower) shall be
required at any time to pledge hereunder more than 65% of the Voting Stock of
any Foreign Corporation and (y) each Pledgor shall be required to pledge
hereunder 100% of any Non-Voting Stock at any time and from time to time
acquired by such Pledgor of any Foreign Corporation.

     3.4 Transfer Taxes. Each pledge of Collateral under Section 3.1 or Section
3.3 hereof shall be accompanied by any transfer tax stamps required in
connection with the pledge of such Collateral.

     3.5 Definition of Pledged Notes. All Notes at any time pledged or required
to be pledged hereunder are hereinafter called the "Pledged Notes".

     3.6 Certain Representations and Warranties Regarding the Collateral. Each
Pledgor represents and warrants that on the date hereof (i) each Subsidiary of
such Pledgor, and the direct ownership thereof, is listed in Annex A hereto;
(ii) the Stock held by such Pledgor consists of the number and type of shares
of the stock of the corporations as described in Annex B hereto; (iii) such
Stock constitutes that percentage of the issued and outstanding capital stock
of the issuing corporation as is set forth in Annex B hereto; (iv) the Notes
held by such Pledgor consist of the promissory notes described in Annex C
hereto where such Pledgor is listed as the lender; (v) the Limited Liability
Company Interests held by such Pledgor consist of the number and type of
interests of the Persons described in Annex D hereto; (vi) each such Limited
Liability Company Interest constitutes that percentage of the issued and
outstanding equity interest of the issuing Person as set forth in Annex D
hereto; (vii) the Partnership Interests held by such Pledgor consist of the
number and type of interests of the Persons described in Annex E hereto; (viii)
each such Partnership Interest constitutes that percentage or portion of the
entire partnership interest of the Partnership as set forth in Annex E hereto;
(ix) the Pledgor has complied with the respective procedure set forth in
Section 3.2(a) hereof with respect to each item of Collateral described in
Annexes A through E hereto; and (x) on the date hereof, such Pledgor owns no
other Securities, Limited Liability Company Interests or Partnership Interests.

     4. APPOINTMENT OF SUB-AGENTS; ENDORSEMENTS, ETC. If and to the extent
necessary to enable the Pledgee to perfect its security interest in any of the
Collateral or to exercise any of its remedies hereunder, the Pledgee shall have
the right to appoint one or more sub-agents for the purpose of retaining
physical possession of the Collateral, which may be held (in the discretion of
the Pledgee) in the name of the relevant Pledgor, endorsed or assigned in blank
or in favor of the Pledgee or any nominee or nominees of the Pledgee or a
sub-agent appointed by the Pledgee.

     5. VOTING, ETC., WHILE NO EVENT OF DEFAULT. Unless and until there shall
have occurred and be continuing an Event of Default, each Pledgor shall be
entitled to exercise any and all voting and other consensual rights pertaining
to the Collateral owned by it, and to give consents, waivers or ratifications
in respect thereof; provided, that, in each case, no vote shall


                                     -10-
<PAGE>   11

be cast or any consent, waiver or ratification given or any action taken or
omitted to be taken which would violate or be inconsistent with any of the
terms of this Agreement, the Credit Agreement, any other Credit Document or any
Interest Rate Protection Agreement or Other Hedging Agreement (collectively,
the "Secured Debt Agreements"), or which would have the effect of impairing the
value of the Collateral or any part thereof or the position or interests of the
Pledgee or any other Secured Creditor in the Collateral. All such rights of
each Pledgor to vote and to give consents, waivers and ratifications shall
cease in case an Event of Default has occurred and is continuing, and Section 7
hereof shall become applicable.

     6. DIVIDENDS AND OTHER DISTRIBUTIONS. Unless and until there shall have
occurred and be continuing an Event of Default, all cash dividends, cash
distributions, cash Proceeds and other cash amounts payable in respect of the
Collateral shall be paid to the respective Pledgor (and may be used by such
Pledgor for its general corporate purposes). The Pledgee shall be entitled to
receive directly, and to retain as part of the Collateral:

          (i) all other or additional stock, notes, limited liability company
     interests, partnership interests, instruments or other securities or
     property (including cash dividends except as otherwise provided above)
     paid or distributed by way of dividend or otherwise in respect of the
     Collateral;

          (ii) all other or additional stock, notes, limited liability company
     interests, partnership interests, instruments or other securities or
     property (including, but not limited to, cash except as otherwise provided
     above) paid or distributed in respect of the Collateral by way of
     stock-split, spin-off, split-up, reclassification, combination of shares
     or similar rearrangement; and

          (iii) all other or additional stock, notes, limited liability company
     interests, partnership interests, instruments or other securities or
     property (including, but not limited to, cash except as otherwise provided
     above) which may be paid in respect of the Collateral by reason of any
     consolidation, merger, exchange of stock, conveyance of assets,
     liquidation or similar corporate reorganization.

Nothing contained in this Section 6 shall limit or restrict in any way the
Pledgee's right to receive proceeds of the Collateral in any form in accordance
with Section 3 of this Agreement. All dividends, distributions or other
payments which are received by any Pledgor contrary to the provisions of this
Section 6 and Section 7 hereof shall be received in trust for the benefit of
the Pledgee, shall be segregated from other property or funds of such Pledgor
and shall be forthwith paid over to the Pledgee as Collateral in the same form
as so received (with any necessary endorsement).

     7. REMEDIES IN CASE OF EVENT OF DEFAULT. If there shall have occurred and
be continuing an Event of Default, then and in every such case, the Pledgee
shall be entitled to exercise all of the rights, powers and remedies (whether
vested in it by this Agreement, any other Secured Debt Agreement or by law) for
the protection and enforcement of its rights in respect of the Collateral, and
the Pledgee shall be entitled to exercise all the rights and remedies of a
secured party under the Uniform Commercial Code as in effect in any relevant
jurisdiction and 


                                     -11-
<PAGE>   12

also shall be entitled, without limitation, to exercise the following rights,
which each Pledgor hereby agrees to be commercially reasonable:

          (i) to receive all amounts payable in respect of the Collateral
     otherwise payable under Section 6 hereof to the respective Pledgor;

          (ii) subject to receipt of any approvals required under the
     Communications Act or the FCC Rules as provided in Section 19 hereof, to
     transfer all or any part of the Collateral into the Pledgee's name or the
     name of its nominee or nominees;

          (iii) to accelerate, subject to the terms thereof, any Pledged Note
     which may be accelerated in accordance with its terms, and take any other
     lawful action to collect upon any Pledged Note (including, without
     limitation, to make any demand for payment thereon of any amounts then due
     and payable);

          (iv) subject to receipt of any approvals required under the
     Communications Act or the FCC Rules as provided in Section 19 hereof, to
     vote all or any part of the Collateral (whether or not transferred into
     the name of the Pledgee) and give all consents, waivers and ratifications
     in respect of the Collateral and otherwise act with respect thereto as
     though it were the outright owner thereof (each Pledgor hereby irrevocably
     constituting and appointing the Pledgee the proxy and attorney-in-fact of
     such Pledgor, with full power of substitution to do so);

          (v) at any time and from time to time to sell, assign and deliver, or
     grant options to purchase, all or any part of the Collateral, or any
     interest therein, at any public or private sale, without demand of
     performance, advertisement or notice of intention to sell or of the time
     or place of sale or adjournment thereof or to redeem or otherwise (all of
     which are hereby waived by each Pledgor), for cash, on credit or for other
     property, for immediate or future delivery without any assumption of
     credit risk, and for such price or prices and on such terms as the Pledgee
     in its absolute discretion may determine, provided that at least 10 days'
     written notice of the time and place of any such sale shall be given to
     the respective Pledgor. The Pledgee shall not be obligated to make any
     such sale of Collateral regardless of whether any such notice of sale has
     theretofore been given. Each Pledgor hereby waives and releases to the
     fullest extent permitted by law any right or equity of redemption with
     respect to the Collateral, whether before or after sale hereunder, and all
     rights, if any, of marshaling the Collateral and any other security for
     the Obligations or otherwise. At any such sale, unless prohibited by
     applicable law, the Pledgee on behalf of the Secured Creditors may bid for
     and purchase all or any part of the Collateral so sold free from any such
     right or equity of redemption. Neither the Pledgee nor any other Secured
     Creditor shall be liable for failure to collect or realize upon any or all
     of the Collateral or for any delay in so doing nor shall any of them be
     under any obligation to take any action whatsoever with regard thereto;
     and

          (vi) to set-off any and all Collateral against any and all
     Obligations, and to withdraw any and all cash or other Collateral from any
     and all Collateral Accounts and to apply such cash and other Collateral to
     the payment of any and all Obligations.


                                     -12-
<PAGE>   13

     8. REMEDIES, ETC., CUMULATIVE. Each and every right, power and remedy of
the Pledgee provided for in this Agreement or in any other Secured Debt
Agreement, or now or hereafter existing at law or in equity or by statute shall
be cumulative and concurrent and shall be in addition to every other such
right, power or remedy. The exercise or beginning of the exercise by the
Pledgee or any other Secured Creditor of any one or more of the rights, powers
or remedies provided for in this Agreement or any other Secured Debt Agreement
or now or hereafter existing at law or in equity or by statute or otherwise
shall not preclude the simultaneous or later exercise by the Pledgee or any
other Secured Creditor of all such other rights, powers or remedies, and no
failure or delay on the part of the Pledgee or any other Secured Creditor to
exercise any such right, power or remedy shall operate as a waiver thereof. No
notice to or demand on any Pledgor in any case shall entitle it to any other or
further notice or demand in similar or other circumstances or constitute a
waiver of any of the rights of the Pledgee or any other Secured Creditor to any
other or further action in any circumstances without notice or demand. The
Secured Creditors agree that this Agreement may be enforced only by the action
of the Administrative Agent or the Pledgee, in each case acting upon the
instructions of the Required Lenders (or, after the date on which all Credit
Document Obligations have been paid in full, the holders of at least the
majority of the outstanding Other Obligations) and that no other Secured
Creditor shall have any right individually to seek to enforce or to enforce
this Agreement or to realize upon the security to be granted hereby, it being
understood and agreed that such rights and remedies may be exercised by the
Administrative Agent or the Pledgee or the holders of at least a majority of
the outstanding Other Obligations, as the case may be, for the benefit of the
Secured Creditors upon the terms of this Agreement.

     9. APPLICATION OF PROCEEDS. (a) All monies collected by the Pledgee upon
any sale or other disposition of the Collateral pursuant to the terms of this
Agreement, together with all other monies received by the Pledgee hereunder,
shall be applied in the manner provided in the Security Agreement.

     (b) It is understood and agreed that the Pledgors shall remain jointly and
severally liable to the extent of any deficiency between the amount of the
proceeds of the Collateral hereunder and the aggregate amount of the
Obligations.

     10. PURCHASERS OF COLLATERAL. Upon any sale of the Collateral by the
Pledgee hereunder (whether by virtue of the power of sale herein granted,
pursuant to judicial process or otherwise), the receipt of the Pledgee or the
officer making the sale shall be a sufficient discharge to the purchaser or
purchasers of the Collateral so sold, and such purchaser or pur-chasers shall
not be obligated to see to the application of any part of the purchase money
paid over to the Pledgee or such officer or be answerable in any way for the
misapplication or nonapplication thereof.

     11. INDEMNITY. Each Pledgor jointly and severally agrees (i) to indemnify
and hold harmless the Pledgee in such capacity and each other Secured Creditor
and their respective successors, assigns, employees, agents, affiliates and
servants (individually an "Indemnitee," and collectively the "Indemnitees")
from and against any and all claims, demands, losses, judgments and liabilities
(including liabilities for penalties) of whatsoever kind or nature, and (ii) to
reimburse each Indemnitee for all costs and expenses, including reasonable
attorneys' fees, in each case 


                                     -13-
<PAGE>   14

growing out of or resulting from this Agreement or the exercise by any
Indemnitee of any right or remedy granted to it hereunder or under any other
Secured Debt Agreement (but excluding any claims, demands, losses, judgments
and liabilities or expenses to the extent incurred by reason of gross
negligence or willful misconduct of such Indemnitee as finally determined by a
court of competent jurisdiction). In no event shall the Pledgee be liable, in
the absence of gross negligence or willful misconduct on its part, for any
matter or thing in connection with this Agreement other than to account for
monies actually received by it in accordance with the terms hereof. If and to
the extent that the obligations of any Pledgor under this Section 11 are
unenforceable for any reason, such Pledgor hereby agrees to make the maximum
contribution to the payment and satisfaction of such obligations which is
permissible under applicable law.

     12. PLEDGEE NOT A PARTNER OR LIMITED LIABILITY COMPANY MEMBER. (a) Nothing
herein shall be construed to make the Pledgee or any other Secured Creditor
liable as a member of any limited liability company or as a partner of any
partnership and neither the Pledgee nor any other Secured Creditor by virtue of
this Agreement or otherwise (except as referred to in the following sentence)
shall have any of the duties, obligations or liabilities of a member of any
limited liability company or of a partner of any partnership. The parties
hereto expressly agree that, unless the Pledgee shall become the absolute owner
of Collateral consisting of a Limited Liability Company Interest or Partnership
Interest pursuant hereto, this Agreement shall not be construed as creating a
partnership or joint venture among the Pledgee, any other Secured Creditor
and/or any Pledgor.

     (b) Except as provided in the last sentence of paragraph (a) of this
Section 12, the Pledgee, by accepting this Agreement, did not intend to become
a member of any limited liability company or a partner of any partnership or
otherwise be deemed to be a co-venturer with respect to any Pledgor or any
limited liability company or partnership either before or after an Event of
Default shall have occurred. The Pledgee shall have only those powers set forth
herein and the Secured Creditors shall assume none of the duties, obligations
or liabilities of a member of any limited liability company or of a partner of
any partnership or any Pledgor except as provided in the last sentence of
paragraph (a) of this Section 12.

     (c) The Pledgee and the other Secured Creditors shall not be obligated to
perform or discharge any obligation of any Pledgor as a result of the pledge
hereby effected.

     (d) The acceptance by the Pledgee of this Agreement, with all the rights,
powers, privileges and authority so created, shall not at any time or in any
event obligate the Pledgee or any other Secured Creditor to appear in or defend
any action or proceeding relating to the Collateral to which it is not a party,
or to take any action hereunder or thereunder, or to expend any money or incur
any expenses or perform or discharge any obligation, duty or liability under
the Collateral.

     13. FURTHER ASSURANCES; POWER-OF-ATTORNEY. (a) Each Pledgor agrees that it
will join with the Pledgee in executing and, at such Pledgor's own expense,
file and refile under the Uniform Commercial Code or other applicable law such
financing statements, continuation statements and other documents in such
offices as the Pledgee may deem necessary and wherever required by law in order
to perfect and preserve the Pledgee's security interest in


                                     -14-
<PAGE>   15

the Collateral and hereby authorizes the Pledgee to file financing statements
and amendments thereto relative to all or any part of the Collateral without
the signature of such Pledgor where permitted by law, and agrees to do such
further acts and things and to execute and deliver to the Pledgee such
additional conveyances, assignments, agreements and instruments as the Pledgee
may reasonably require or deem necessary to carry into effect the purposes of
this Agreement or to further assure and confirm unto the Pledgee its rights,
powers and remedies hereunder.

     (b) Subject to the Communications Act and the FCC Rules to the extent
applicable, each Pledgor hereby appoints the Pledgee such Pledgor's
attorney-in-fact, with full authority in the place and stead of such Pledgor
and in the name of such Pledgor or otherwise, to act from time to time solely
after the occurrence and during the continuance of an Event of Default in the
Pledgee's reasonable discretion to take any action and to execute any
instrument which the Pledgee may deem necessary or advisable to accomplish the
purposes of this Agreement.

     (c) Each Pledgor agrees that, in the event of any change in any
requirement of law occurring after the date hereof that affects in any manner
the Pledgee's rights of access to, or use or sale of the FCC Licenses or the
procedures necessary to enable the Pledgee to obtain such rights of access, use
or sale (including, without limitation, changes allowing greater such access),
each Pledgor upon request of the Pledgee or the Required Lenders, shall enter
into an amendment to this Agreement in form and substance satisfactory to the
Pledgee to provide the Pledgee and the Secured Creditors with such rights to
the greatest extent possible consistent with then applicable requirements of
law, including without limitation the Communications Act and the FCC Rules.

     14. THE PLEDGEE AS AGENT. The Pledgee will hold in accordance with this
Agreement all items of the Collateral at any time received under this
Agreement. It is expressly understood and agreed by each Secured Creditor that
by accepting the benefits of this Agreement each such Secured Creditor
acknowledges and agrees that the obligations of the Pledgee as holder of the
Collateral and interests therein and with respect to the disposition thereof,
and otherwise under this Agreement, are only those expressly set forth in this
Agreement. The Pledgee shall act hereunder on the terms and conditions set
forth herein and in Section 12 of the Credit Agreement.

     15. TRANSFER BY THE PLEDGORS. No Pledgor will sell or otherwise dispose
of, grant any option with respect to, or mortgage, pledge or otherwise encumber
any of the Collateral or any interest therein (except as may be permitted in
accordance with the terms of the Credit Agreement).

     16. REPRESENTATIONS, WARRANTIES AND COVENANTS OF THE PLEDGORS. (a) Each
Pledgor represents, warrants and covenants that:

          (i) it is the legal, beneficial and record owner of, and has good and
     marketable title to, all Collateral consisting of one or more Securities
     and that it has sufficient interest in all Collateral in which a security
     interest is purported to be created hereunder for such security interest
     to attach (subject, in each case, to no pledge, lien, mortgage,


                                     -15-
<PAGE>   16

     hypothecation, security interest, charge, option, Adverse Claim or other
     encumbrance whatsoever, except the liens and security interests created by
     this Agreement);

          (ii) it has full power, authority and legal right to pledge all the
     Collateral pledged by it pursuant to this Agreement;

          (iii) this Agreement has been duly authorized, executed and delivered
     by such Pledgor and constitutes a legal, valid and binding obligation of
     such Pledgor enforceable against such Pledgor in accordance with its
     terms, except to the extent that the enforceability hereof may be limited
     by applicable bankruptcy, insolvency, reorganization, moratorium or other
     similar laws generally affecting creditors' rights and by equitable
     principles (regardless of whether enforcement is sought in equity or at
     law);

          (iv) except to the extent already obtained or made, no consent of any
     other party (including, without limitation, any stockholder, partner,
     member or creditor of such Pledgor or any of its Subsidiaries) and no
     consent, license, permit, approval or authorization of, exemption by,
     notice or report to, or registration, filing or declaration with, any
     governmental authority is required to be obtained by such Pledgor in
     connection with (a) the execution, delivery or performance of this
     Agreement, (b) the validity or enforceability of this Agreement (except as
     set forth in clause (iii) above), (c) the perfection or enforceability of
     the Pledgee's security interest in the Collateral or (d) except for
     compliance with or as may be required by applicable securities laws, the
     exercise by the Pledgee of any of its rights or remedies provided herein;

          (v) the execution, delivery and performance of this Agreement will
     not violate any provision of any applicable law or regulation or of any
     order, judgment, writ, award or decree of any court, arbitrator or
     governmental authority, domestic or foreign, applicable to such Pledgor,
     or of the certificate of incorporation, operating agreement, limited
     liability company agreement, partnership agreement or by-laws of such
     Pledgor or of any securities issued by such Pledgor or any of its
     Subsidiaries, or of any mortgage, deed of trust, indenture, lease, loan
     agreement, credit agreement or other material contract, agreement or
     instrument or undertaking to which such Pledgor or any of its Subsidiaries
     is a party or which purports to be binding upon such Pledgor or any of its
     Subsidiaries or upon any of their respective assets and will not result in
     the creation or imposition of (or the obligation to create or impose) any
     lien or encumbrance on any of the assets of such Pledgor or any of its
     Subsidiaries except as contemplated by this Agreement;

          (vi) all of the Collateral (consisting of Securities, Limited
     Liability Company Interests or Partnership Interests) has been duly and
     validly issued and acquired, is fully paid and non-assessable and is
     subject to no options to purchase or similar rights;

          (vii) the pledge, collateral assignment and delivery to the Pledgee
     of the Collateral consisting of Certificated Securities (together with
     instruments of transfer therefor) pursuant to this Agreement creates a
     valid and perfected first priority security interest in such Certificated
     Securities, and the proceeds thereof, subject to no prior Lien or
     encumbrance or to any agreement purporting to grant to any third party a
     Lien or 


                                     -16-
<PAGE>   17

     encumbrance on the property or assets of such Pledgor which would include
     the Securities, and the Pledgee is entitled to all the rights, priorities
     and benefits afforded by the UCC or other relevant law as enacted in any
     relevant jurisdiction to perfect security interests in respect of such
     Collateral; and

          (viii) "control" (as defined in Section 8-106 of the UCC) has been
     obtained by the Pledgee over all Collateral consisting of Securities
     (including Notes which are Securities) with respect to which such
     "control" may be obtained pursuant to Section 8-106 of the UCC.

     (b) Each Pledgor covenants and agrees that it will defend the Pledgee's
right, title and security interest in and to the Securities and the proceeds
thereof against the claims and demands of all persons whomsoever; and each
Pledgor covenants and agrees that it will have like title to and right to
pledge any other property at any time hereafter pledged to the Pledgee as
Collateral hereunder and will likewise defend the right thereto and security
interest therein of the Pledgee and the other Secured Creditors.

     (c) Each Pledgor covenants and agrees that it will take no action which
would violate any of the terms of any Secured Debt Agreement.

     17. CHIEF EXECUTIVE OFFICE; RECORDS. The chief executive office of each
Pledgor is located at the address specified in Annex F hereto for such Pledgor.
Each Pledgor will not move its chief executive office except to such new
location as such Pledgor may establish in accordance with the last sentence of
this Section 17. The originals of all documents in the possession of such
Pledgor evidencing all Collateral, including but not limited to all Limited
Liability Company Interests and Partnership Interests, and the only original
books of account and records of such Pledgor relating thereto are, and will
continue to be, kept at such chief executive office as specified in Annex F
hereto, or at such new locations as such Pledgor may establish in accordance
with the last sentence of this Section 17. All Limited Liability Company
Interests and Partnership Interests are, and will continue to be, maintained
at, and controlled and directed (including, without limitation, for general
accounting purposes) from, such chief executive office as specified in Annex F
hereto, or such new locations as such Pledgor may establish in accordance with
the last sentence of this Section 17. No Pledgor shall establish a new location
for such offices until (i) it shall have given to the Pledgee not less than 15
days' prior written notice of its intention so to do, clearly describing such
new location and providing such other information in connection therewith as
the Pledgee may reasonably request and (ii) with respect to such new location,
it shall have taken all action, satisfactory to the Pledgee, to maintain the
security interest of the Collateral Agent in the Collateral intended to be
granted hereby at all times fully perfected and in full force and effect.
Promptly after establishing a new location for such offices in accordance with
the immediately preceding sentence, the respective Pledgor shall deliver to the
Pledgee a supplement to Annex F hereto so as to cause such Annex F hereto to be
complete and accurate.

     18. PLEDGORS' OBLIGATIONS ABSOLUTE, ETC. The obligations of each Pledgor
under this Agreement shall be absolute and unconditional and shall remain in
full force and effect without regard to, and shall not be released, suspended,
discharged, terminated or 


                                     -17-
<PAGE>   18

otherwise affected by, any circumstance or occurrence whatsoever, including,
without limitation: (i) any renewal, extension, amendment or modification of or
addition or supplement to or deletion from any Secured Debt Agreement or any
other instrument or agreement referred to therein, or any assignment or
transfer of any thereof; (ii) any waiver, consent, extension, indulgence or
other action or inaction under or in respect of any such agreement or
instrument including, without limitation, this Agreement; (iii) any furnishing
of any additional security to the Pledgee or its assignee or any acceptance
thereof or any release of any security by the Pledgee or its assignee; (iv) any
limitation on any party's liability or obligations under any such instrument or
agreement or any invalidity or unenforceability, in whole or in part, of any
such instrument or agreement or any term thereof; or (v) any bankruptcy,
insolvency, reorganization, composition, adjustment, dissolution, liquidation
or other like proceeding relating to any Pledgor or any Subsidiary of any
Pledgor, or any action taken with respect to this Agreement by any trustee or
receiver, or by any court, in any such proceeding, whether or not such Pledgor
shall have notice or knowledge of any of the foregoing.

     19. ACTIONS REQUIRING FCC APPROVAL. (a) Notwithstanding anything to the
contrary contained in this Agreement, or any of the documents executed pursuant
hereto, the Pledgee will not take any action pursuant to this Agreement, or any
such documents, which would constitute or result in any assignment of any FCC
License or any transfer of control of the holder of any FCC License if such
assignment of such License or such transfer of control would require under then
existing law (including the Communications Act or the FCC Rules) the prior
approval of the FCC, without first obtaining such approval. In connection with
this Section 19 the Pledgee shall be entitled to rely upon the advice of FCC
counsel of the Pledgee's choice with respect to such assignment or transfer
(including to determine whether any such assignment or transfer has occurred or
will occur and whether or not prior approval of the FCC is required) whether or
not the advice rendered is ultimately determined to have been accurate.

     (b) If an Event of Default shall have occurred and be continuing, the
relevant Pledgor shall take any action which the Pledgee may request in the
exercise of its rights and remedies under this Agreement in order to transfer
or assign the Collateral to the Pledgee or to such one or more third parties as
the Pledgee may designate, or to a combination of the foregoing. To enforce the
provisions of this Section 19, after an Event of Default shall have occurred
and be continuing, the Pledgee is empowered to request, and each Pledgor agrees
to authorize, the appointment of a receiver or trustee from any court of
competent jurisdiction. Such receiver or trustee shall be instructed to seek
from the FCC (and any other governmental authority) such consent or approval as
may be required by the Communications Act and the FCC Rules for any assignment
of the assets of or transfer of control of any or all of the FCC Licenses or of
any Person whose stock, partnership interests or other equity interest is
subject to this Agreement to the extent required for such trustee or receiver
to assume such control for the purpose of seeking a bona fide purchaser to whom
such FCC Licenses will be assigned or control of such entity ultimately will be
transferred. Each Pledgor agrees, at such Pledgor's own cost and expense, to
cooperate with any such trustee or receiver, or at such trustee's or receiver's
direction, a bona-fide purchaser and with the Pledgee in the preparation,
execution and filing of any applications and other documents and providing any
information that may be necessary or helpful in obtaining the FCC's consent to
the assignment or transfer to such trustee or receiver, or at such trustee's or
receiver's direction, such purchaser of the Collateral or any of the FCC
Licenses. To the fullest


                                     -18-
<PAGE>   19

extent permitted by applicable law, each Pledgor hereby agrees to consent to
and authorize any such transfer of control upon the request of the Pledgee
after the occurrence and during the continuation of an Event of Default and,
without limiting any rights of the Pledgee under this Agreement, to authorize
the Pledgee to nominate a trustee or receiver to assume control of the
Collateral, subject only to any required consents, approvals or orders of
courts of competent jurisdiction, the FCC or other governmental authorities,
for the purpose of effectuating the transactions contemplated in this Section
19(b). Such trustee or receiver shall have all the rights and powers as
provided to it by law, court order or the Pledgee under this Agreement. Each
Pledgor shall cooperate fully and use its best efforts in obtaining the consent
of the FCC and the approval or consent of each other governmental authority
required to effectuate the foregoing.

     (c) Each Pledgor shall use its best efforts to assist in obtaining consent
or approval of the FCC, any court and any other governmental authority, if
required, for any action or transactions contemplated by this Agreement,
including, without limitation, the preparation, execution and filing with the
FCC of the transferor's or assignor's portion of any application or
applications for consent to the transfer of control or assignment necessary or
appropriate under the FCC's policies, rules and regulations for approval of the
transfer or assignment of all or any portion of the Collateral.

     (d) Each Pledgor hereby acknowledges and agrees that the FCC Licenses are
unique assets and that a violation of such Pledgor's covenant to cooperate with
respect to the obtainment of any regulatory consents would result in
irreparable harm to the Pledgee for which monetary damages are not readily
ascertainable. Each Pledgor further agrees that, because of the unique nature
of its undertakings in this Section 19, the same may be specifically enforced,
and such Pledgor hereby waives, and agrees to waive, any claim or defense that
the Pledgee would have an adequate remedy at law for the breach of such
undertakings and any requirement for the posting of bond or other certificate.

     (e) Without limiting the obligations of any Pledgor hereunder in any
respect, each Pledgor further agrees that if such Pledgor, upon or after the
occurrence and during the continuance of an Event of Default, should fail or
refuse to execute any application or other document necessary or appropriate to
obtain any governmental consent necessary or appropriate for the exercise of
any right of the Pledgee hereunder, such Pledgor agrees that, to the full
extent permitted by the Communications Act and the FCC Rules, such application
or other document may be executed on such Pledgor's behalf by the clerk of any
court or other forum in any competent jurisdiction without notice to such
Pledgor.

     (f) This Section 19 shall not limit any other rights or remedies of the
Pledgee or the Secured Creditors available under applicable law including,
without limitation, the Communications Act and the FCC Rules.

     20. REGISTRATION, ETC. (a) If there shall have occurred and be continuing
an Event of Default then, and in every such case, upon receipt by any Pledgor
from the Pledgee of a written request or requests that such Pledgor cause any
registration, qualification or compliance under any Federal or state securities
law or laws to be effected with respect to all or any part of the Collateral
consisting of Securities, Limited Liability Company Interests or 


                                     -19-
<PAGE>   20

Partnership Interests, such Pledgor as soon as practicable and at its expense
will use its reasonable best efforts to cause such registration to be effected
(and be kept effective) and will use its reasonable best efforts to cause such
qualification and compliance to be declared effected (and be kept effective) as
may be so requested and as would permit or facilitate the sale and distribution
of such Collateral, including, without limitation, registration under the
Securities Act, as then in effect (or any similar statute then in effect),
appropriate qualifications under applicable blue sky or other state securities
laws and appropriate compliance with any other government requirements,
provided that the Pledgee shall furnish to such Pledgor such information
regarding the Pledgee as such Pledgor may reasonably request in writing and as
shall be required in connection with any such registration, qualification or
compliance. Such Pledgor will cause the Pledgee to be kept advised in writing
as to the progress of each such registration, qualification or compliance and
as to the completion thereof, will furnish to the Pledgee such number of
prospectuses, offering circulars or other documents incident thereto as the
Pledgee from time to time may reasonably request, and will indemnify the
Pledgee, each other Secured Creditor and all others participating in the
distribution of such Collateral against all claims, losses, damages and
liabilities caused by any untrue statement (or alleged untrue statement) of a
material fact contained therein (or in any related registration statement or
other offering document) or by any omission (or alleged omission) to state
therein (or in any related registration statement or other offering document) a
material fact required to be stated therein or necessary to make the statements
therein not misleading, except insofar as the same may have been caused by an
untrue statement or omission based upon information furnished in writing to
such Pledgor by the Pledgee or such other Secured Creditor expressly for use
therein.

     (b) If at any time when the Pledgee shall determine to exercise its right
to sell all or any part of the Collateral consisting of Securities, Limited
Liability Company Interests or Partnership Interests pursuant to Section 7
hereof, and the Collateral or the part thereof to be sold shall not, for any
reason whatsoever, be effectively registered under the Securities Act, as then
in effect, the Pledgee may, in its sole and absolute discretion, sell such
Collateral, as the case may be, or part thereof by private sale in such manner
and under such circumstances as the Pledgee may deem necessary or advisable in
order that such sale may legally be effected without such registration. Without
limiting the generality of the foregoing, in any such event the Pledgee, in its
sole and absolute discretion (i) may proceed to make such private sale
notwithstanding that a registration statement for the purpose of registering
such Collateral or part thereof shall have been filed under such Securities
Act, (ii) may approach and negotiate with a single possible purchaser to effect
such sale, and (iii) may restrict such sale to a purchaser who will represent
and agree that such purchaser is purchasing for its own account, for
investment, and not with a view to the distribution or sale of such Collateral
or part thereof. In the event of any such sale, the Pledgee shall incur no
responsibility or liability for selling all or any part of the Collateral at a
price which the Pledgee, in its sole and absolute discretion, in good faith
deems reasonable under the circumstances, notwithstanding the possibility that
a substantially higher price might be realized if the sale were deferred until
after registration as aforesaid.

     21. TERMINATION; RELEASE. (a) After the Termination Date, this Agreement
and the security interest created hereby shall terminate (provided that all
indemnities set forth herein including, without limitation, in Section 11
hereof shall survive any such termination), and the Pledgee, at the request and
expense of any Pledgor, will execute and deliver to such


                                     -20-
<PAGE>   21

Pledgor a proper instrument or instruments acknowledging the satisfaction and
termination of this Agreement, and will duly assign, transfer and deliver to
such Pledgor (without recourse and without any representation or warranty) such
of the Collateral as has not theretofore been sold or otherwise applied or
released pursuant to this Agreement, together with any monies at the time held
by the Pledgee or any of its sub-agents hereunder. As used in this Agreement,
"Termination Date" shall mean the date upon which the Total Commitment and all
Interest Rate Protection Agreements and Other Hedging Agreements have been
terminated, no Note under the Credit Agreement is outstanding (and all Loans
have been repaid in full), all Letters of Credit have been terminated and all
Obligations then due and payable have been paid in full.

     (b) In the event that any part of the Collateral is sold in connection
with a sale permitted by Section 9.02 of the Credit Agreement (other than a
sale to any Pledgor or any Subsidiary of any Pledgor) or is otherwise released
at the direction of the Required Lenders (or all the Lenders if required by
Section 13.12 of the Credit Agreement) and the proceeds of such sale or sales
or from such release are applied in accordance with the provisions of the
Credit Agreement, to the extent required to be so applied, the Pledgee, at the
request and expense of any Pledgor, will duly assign, transfer and deliver to
such Pledgor (without recourse and without any representation or warranty) such
of the Collateral (and releases therefor) as is then being (or has been) so
sold or released and has not theretofore been released pursuant to this
Agreement.

     (c) At any time that a Pledgor desires that the Pledgee assign, transfer
and deliver Collateral (and releases therefor) as provided in Section 21(a) or
(b) hereof, it shall deliver to the Pledgee a certificate signed by an officer
of such Pledgor stating that the release of the respective Collateral is
permitted pursuant to such Section 21(a) or (b).

     (d) The Pledgee shall have no liability whatsoever to any other Secured
Creditor as the result of any release of Collateral by it in accordance with
this Section 21.

     22. NOTICES, ETC. All such notices and communications provided for
hereunder shall be in writing (including telegraphic, telex, telecopier or
cable communication) and mailed, telegraphed, telexed, telecopied, cabled or
delivered to the appropriate address set forth below. All such notices and
communications shall, when mailed, telegraphed, telexed, telecopied, or cabled
or sent by overnight courier, be effective when deposited in the mails,
delivered to the telegraph company, cable company or overnight courier, as the
case may be, or sent by telex or telecopier, except that notices and
communications to (x) the Pledgee shall not be effective until received by the
Pledgee and (y) any Pledgor shall not be effective until received by any such
Pledgor, as the case may be. All notices and other communications shall be in
writing and addressed as follows:

     (a) if to any Pledgor, at the address set forth opposite such Pledgor's
signature below;


                                     -21-
<PAGE>   22

     (b) if to the Pledgee, at:

     Bankers Trust Company
     One Bankers Trust Plaza
     130 Liberty Street
     New York, NY  10006
     Attention: Greg Shefrin
     Telephone No.: (212) 250-1724
     Telecopier No.: (212) 250-7218

     (c) if to any Lender Creditor, either (x) to the Administrative Agent, at
the address of the Administrative Agent specified in the Credit Agreement or
(y) at such address as such Lender Creditor shall have specified in the Credit
Agreement;

     (d) if to any Other Creditor at such address as such Other Creditor shall
have specified in writing to the Pledgors and the Pledgee;

or at such other address as shall have been furnished in writing by any Person
described above to the party required to give notice hereunder.

     23. WAIVER; AMENDMENT. None of the terms and conditions of this Agreement
may be changed, waived, modified or varied in any manner whatsoever unless in
writing duly signed by each Pledgor directly affected thereby and the Pledgee
(with the written consent of either (x) the Required Lenders (or all of the
Lenders to the extent required by Section 13.12 of the Credit Agreement) at all
times prior to the time when all Credit Document Obligations have been paid in
full or (y) the holders of at least a majority of the outstanding Other
Obligations at all times after the time when all Credit Document Obligations
have been paid in full); provided that any change, waiver, modification or
variance affecting the rights and benefits of a single Class (as defined below)
of Secured Creditors (and not all Secured Creditors in a like or similar
manner) shall also require the written consent of the Requisite Creditors (as
defined below) of such affected Class. For the purpose of this Agreement, the
term "Class" shall mean each class of Secured Creditors, i.e., whether (i) the
Lender Creditors as holders of the Credit Document Obligations or (ii) the
Other Creditors as the holders of the Other Obligations. For the purpose of
this Agreement, the term "Requisite Creditors" of any Class shall mean each of
(i) with respect to the Credit Document Obligations, the Required Lenders and
(ii) with respect to the Other Obligations, the holders of at least a majority
of all obligations outstanding from time to time under the Interest Rate
Protection Agreements and Other Hedging Agreements.

     24. MISCELLANEOUS. This Agreement shall be binding upon the parties hereto
and their respective successors and assigns and shall inure to the benefit of
and be enforceable by each of the parties hereto and its successors and
assigns, provided that no Pledgor may assign any of its rights or obligations
under this Agreement without the prior consent of the Collateral Agent. THIS
AGREEMENT SHALL BE CONSTRUED AND ENFORCED IN ACCORDANCE WITH AND GOVERNED BY
THE INTERNAL LAWS OF THE STATE OF NEW YORK. EACH PLEDGOR IRREVOCABLY WAIVES ALL
RIGHT TO A TRIAL BY JURY IN ANY ACTION PROCEEDING OR COUNTERCLAIM ARISING


                                     -22-
<PAGE>   23

OUT OF OR RELATING TO THIS AGREEMENT OR THE TRANSACTIONS CONTEMPLATED HEREBY.
The headings in this Agreement are for purposes of reference only and shall not
limit or define the meaning hereof. This Agreement may be executed in any
number of counterparts, each of which shall be an original, but all of which
shall constitute one instrument. In the event that any provision of this
Agreement shall prove to be invalid or unenforceable, such provision shall be
deemed to be severable from the other provisions of this Agreement which shall
remain binding on all parties hereto. EACH PLEDGOR HEREBY IRREVOCABLY CONSENTS
TO AND WAIVES ANY RIGHT TO OBJECT TO OR OTHERWISE CONTEST THE APPOINTMENT OF A
RECEIVER AFTER THE OCCURRENCE AND DURING THE CONTINUANCE OF AN EVENT OF
DEFAULT. EACH PLEDGOR HEREBY GRANTS SUCH CONSENT AND WAIVER KNOWINGLY AFTER
HAVING DISCUSSED THE IMPLICATIONS THEREOF WITH COUNSEL, ACKNOWLEDGES THAT THE
UNCONTESTED RIGHT TO HAVE A RECEIVER APPOINTED FOR THE FOREGOING PURPOSES IS
CONSIDERED ESSENTIAL BY THE PLEDGEE AND THE SECURED CREDITORS IN CONNECTION
WITH THE ENFORCEMENT OF THEIR RIGHTS AND REMEDIES HEREUNDER AND UNDER THE OTHER
CREDIT DOCUMENTS, AND THE AVAILABILITY OF SUCH APPOINTMENT AS A REMEDY UNDER
THE FOREGOING CIRCUMSTANCES WAS A MATERIAL FACTOR IN INDUCING THE LENDERS TO
MAKE (AND COMMIT TO MAKE) LOANS TO THE BORROWER AND IN INDUCING THE OTHER
CREDITORS TO ENTER INTO INTEREST RATE PROTECTION AGREEMENTS AND OTHER HEDGING
AGREEMENTS WITH THE BORROWER, AND AGREES TO ENTER INTO ANY AND ALL STIPULATIONS
IN ANY LEGAL ACTIONS, OR AGREEMENTS OR OTHER INSTRUMENTS IN CONNECTION WITH THE
FOREGOING AND TO COOPERATE FULLY WITH THE PLEDGEE AND THE REQUIRED LENDERS, OR,
THE HOLDERS OF A MAJORITY OF THE OTHER OBLIGATIONS, AS THE CASE MAY BE, IN
CONNECTION WITH THE ASSUMPTION AND EXERCISE OF CONTROL BY THE RECEIVER OVER ALL
OR ANY PORTION OF THE COLLATERAL.

     25. RECOURSE. This Agreement is made with full recourse to the Pledgors
and pursuant to and upon all the representations, warranties, covenants and
agreements on the part of the Pledgors contained herein and in the other
Secured Debt Agreements and otherwise in writing in connection herewith or
therewith.

     26. ADDITIONAL PLEDGORS. It is understood and agreed that any Subsidiary
of the Borrower that is required to execute a counterpart of this Agreement
after the date hereof pursuant to Section 8.13 or 9.15 of the Credit Agreement
shall automatically become a Pledgor hereunder by executing a counterpart
hereof and delivering the same to the Pledgee.

                                    * * * *


                                     -23-
<PAGE>   24

     IN WITNESS WHEREOF, each Pledgor and the Pledgee have caused this
Agreement to be executed by their duly elected officers duly authorized as of
the date first above written.


Address:

                                      PAGEMART WIRELESS, INC.,
3333 Lee Parkway, Suite 100             as a Pledgor
Dallas, TX  75219
Attention:  G. Clay Myers
Telephone:  (214) 765-3510
Telecopier:  (214) 765-4961          By
                                        ---------------------------------------
                                        Name:
                                        Title:


Accepted and Agreed to:

BANKERS TRUST COMPANY,
  as Collateral Agent and Pledgee


By  
  ------------------------------------
  Name:
  Title:


<PAGE>   25

                                                                   ANNEX A
                                                                      to
                                                               PLEDGE AGREEMENT


                              LIST OF SUBSIDIARIES

<PAGE>   26

                                                                   ANNEX B
                                                                      to
                                                               PLEDGE AGREEMENT


LIST OF STOCK

I.   PageMart Wireless, Inc.

<TABLE>
<CAPTION>
                                                                              Percentage of           Relevant Sub-
                                                                Number      Outstanding Shares          Clause of 
       Name of Issuing        Certificate        Type of          of                of                Section 3.2(a)
         Corporation             Number          Shares         Shares        Capital Stock        of Pledge Agreement
         -----------             ------          ------         ------        -------------        -------------------
       <S>                    <C>                <C>            <C>         <C>                    <C>


         ===========             ======          ======         ======        =============        ===================
</TABLE>



<PAGE>   27

                                                                   ANNEX C
                                                                      to
                                                               PLEDGE AGREEMENT


                                 LIST OF NOTES



I.   PageMart Wireless, Inc.

<TABLE>
<CAPTION>
Amount                            Maturity Date                 Obligor            Relevant Sub-clause of 
- ------                            -------------                 -------                 Section 3.2(a)
                                                                                     of Pledge Agreement
                                                                                     -------------------
<S>                               <C>                           <C>                <C>


</TABLE>


<PAGE>   28

                                                                   ANNEX D
                                                                      to
                                                               PLEDGE AGREEMENT


                  LIST OF LIMITED LIABILITY COMPANY INTERESTS




<PAGE>   29
                                                                   ANNEX E
                                                                      to
                                                               PLEDGE AGREEMENT


                         LIST OF PARTNERSHIP INTERESTS


<PAGE>   30

                                                                   ANNEX F
                                                                      to
                                                               PLEDGE AGREEMENT


                        LIST OF CHIEF EXECUTIVE OFFICES



I.   PageMart Wireless, Inc.


<PAGE>   31

                                                                   ANNEX G
                                                                      to
                                                               PLEDGE AGREEMENT

    Form of Agreement Regarding Uncertificated Securities, Limited Liability
                  Company Interests and Partnership Interests


     AGREEMENT (as amended, modified or supplemented from time to time, this
"Agreement"), dated as of _______ __, ____, among each of the undersigned
pledgors (each a "Pledgor" and, collectively, the "Pledgors"), Bankers Trust
Company, not in its individual capacity but solely as Collateral Agent, under,
and as defined in, the Pledge Agreement referred to below, (the "Pledgee"), and
__________, as the issuer of the Uncertificated Securities, Limited Liability
Company Interests and/or Partnership Interests (each as defined below) (the
"Issuer").

                             W I T N E S S E T H :

     WHEREAS, each Pledgor and the Pledgee have entered into a Pledge
Agreement, dated as of March 23, 1999 (as amended, amended and restated,
modified or supplemented from time to time, the "Pledge Agreement"), under
which, among other things, in order to secure the payment of the Obligations
(as defined in the Pledge Agreement), each Pledgor will pledge to the Pledgee
for the benefit of the Secured Creditors (as defined in the Pledge Agreement),
and grant a security interest in favor of the Pledgee for the benefit of the
Secured Creditors in, all of the right, title and interest of such Pledgor in
and to any and all (1) "uncertificated securities" (as defined in Section
8-102(a)(18) of the Uniform Commercial Code, as adopted in the State of New
York) ("Uncertificated Securities"), (2) Partnership Interests (as defined in
the Pledge Agreement) and (3) Limited Liability Company Interests (as defined
in the Pledge Agreement), in each case issued from time to time by the Issuer,
whether now existing or hereafter from time to time acquired by such Pledgor
(with all of such Uncertificated Securities, Partnership Interests and Limited
Liability Company Interests being herein collectively called the "Issuer
Pledged Interests"); and

     WHEREAS, each Pledgor desires the Issuer to enter into this Agreement in
order to perfect the security interest of the Pledgee under the Pledge
Agreement in the Issuer Pledged Interests, to vest in the Pledgee control of
the Issuer Pledge Interests and to provide for the rights of the parties under
this Agreement;

     NOW THEREFORE, in consideration of the premises and the mutual promises
and agreements contained herein, and for other valuable consideration, the
receipt and sufficiency of which are hereby acknowledged, the parties hereto
hereby agree as follows:

     1. Each Pledgor hereby irrevocably authorizes and directs the Issuer, and
the Issuer hereby agrees, to comply with any and all instructions and orders
originated by the Pledgee (and its successors and assigns) regarding any and
all of the Issuer Pledged Interests without the further consent by the
registered owner (including the respective Pledgor), and not to comply 

<PAGE>   32

with any instructions or orders regarding any or all of the Issuer Pledged
Interests originated by any person or entity other than the Pledgee (and its
successors and assigns) or a court of competent jurisdiction.

     2. The Issuer hereby certifies that (i) no notice of any security
interest, lien or other encumbrance or claim affecting the Issuer Pledged
Interests (other than the security interest of the Pledgee) has been received
by it, and (ii) the security interest of the Pledgee in the Issuer Pledged
Interests has been registered in the books and records of the Issuer.

     3. The Issuer hereby represents and warrants that (i) the pledge by the
Pledgors of, and the granting by the Pledgors of a security interest in, the
Issuer Pledged Interests to the Pledgee, for the benefit of the Secured
Creditors, does not violate the charter, by-laws, partnership agreement,
membership agreement or any other agreement governing the Issuer or the Issuer
Pledged Interests, and (ii) the Issuer Pledged Interests are fully paid and
nonassessable.

     4. All notices, statements of accounts, reports, prospectuses, financial
statements and other communications to be sent to any Pledgor by the Issuer in
respect of the Issuer will also be sent to the Pledgee at the following
address:

                           Bankers Trust Company
                           One Bankers Trust Plaza
                           130 Liberty Street
                           New York, NY  10006
                           Attention: Greg Shefrin
                           Tel: (212) 250-1724
                           Fax: (212) 250-7218

     5. Until the Pledgee shall have delivered written notice to the Issuer
that all of the Obligations have been paid in full and this Agreement is
terminated, the Issuer will send any and all redemptions, distributions,
interest or other payments in respect of the Issuer Pledged Interests from the
Issuer for the account of the Pledgor only by wire transfers to the following
address:

                           ___________________
                           ___________________
                           ___________________
                           ___________________
                           ABA No.: ___________________________
                           Account in the Name of:  ___________
                           Account No.:  ______________________

     6. Except as expressly provided otherwise in Sections 4 and 5 above, all
notices, instructions, orders and communications hereunder shall be sent or
delivered by mail, telex, telecopy or overnight courier service and all such
notices and communications shall, when mailed, telexed, telecopied or sent by
overnight courier, be effective when deposited in the mails or delivered to the
overnight courier, prepaid and properly addressed for delivery on such or the
next Business Day, or sent by telex or telecopier, except that notices and
communications to the Pledgee shall not be effective until received by the
Pledgee. All notices and other communications shall be in writing and addressed
as follows:


                                       2



                                     -25-
<PAGE>   33

                  (a)      if to any Pledgor, at:

                           PageMart Wireless, Inc.
                           3333 Lee Parkway, Suite 100
                           Dallas, TX 75219
                           Attention: G. Clay Myers
                           Tel.: (214) 765-3510
                           Fax: (214) 765-4961

                  (b)      if to the Pledgee, at:

                           Bankers Trust Company
                           One Bankers Trust Plaza
                           130 Liberty Street
                           New York, NY  10006
                           Attention: Greg Shefrin
                           Tel: (212) 250-1724
                           Fax: (212) 250-7218

                  (c)      if to the Issuer, at:

                           ___________________
                           ___________________
                           ___________________
                           Attention:  ___________________
                           Telephone No.:_________________
                           Telecopier No.:________________

or at such other address as shall have been furnished in writing by any person
described above to the party required to give notice hereunder. As used in this
Section 6, "Business Day" means any day other than a Saturday, Sunday, or other
day in which banks in New York are authorized to remain closed.

     7. This Agreement shall be binding upon the successors and assigns of each
Pledgor and the Issuer and shall inure to the benefit of and be enforceable by
the Pledgee and its successors and assigns. This Agreement may be executed in
any number of counterparts, each of which shall be an original, but all of
which shall constitute one instrument. In the event that any provision of this
Agreement shall prove to be invalid or unenforceable, such provision shall be
deemed to be severable from the other provisions of this Agreement which shall
remain binding on all parties hereto. None of the terms and conditions of this
Agreement may be changed, waived, modified or varied in any manner whatsoever
except in writing signed by the Pledgee, the Issuer and any Pledgor which at
such time owns any Issuer Pledged Interests.


                                       3
<PAGE>   34

     8. This Agreement shall be governed by and construed in accordance with
the law of the State of New York, without regard to its principles of conflict
of laws.

     IN WITNESS WHEREOF, each Pledgor, the Pledgee and the Issuer have caused
this Agreement to be executed by their duly elected officers duly authorized as
of the date first above written.


                                     [____________________________],(1)
                                        as a Pledgor


                                     By
                                       ---------------------------------------
                                       Name:
                                       Title:


                                     BANKERS TRUST COMPANY,
                                       not in its individual capacity but 
                                       solely as Collateral Agent and Pledgee


                                     By
                                       ---------------------------------------
                                       Name:
                                       Title:


                                     [____________________________],
                                        the Issuer


                                     By
                                       ---------------------------------------
                                       Name:
                                       Title:




- ---------------

(1)  Insert signature block for each Pledgor party to this Agreement.


                                       4

<PAGE>   1

                                                                   EXHIBIT 10.21


                                                  Agreement Number: C989107SC001



                                RESALE AGREEMENT

                                     BETWEEN

                      GTE COMMUNICATION SYSTEMS CORPORATION

                                       AND

                             PAGEMART WIRELESS, INC.









                        CONTRACT MANAGER: GALE L. MARVIN


PageMart 09/28/98                                                 -CONFIDENTIAL-


<PAGE>   2




                                TABLE OF CONTENTS

<TABLE>

<S>                                                                                                             <C>
1.       TERM.....................................................................................................1
2.       DEFINITIONS..............................................................................................1
3.       LICENSE..................................................................................................3
4.       INDEPENDENT PARTIES......................................................................................3
5.       SCOPE....................................................................................................4
6.       LICENSOR RESPONSIBILITIES................................................................................4
7.       RESELLER RESPONSIBILITIES................................................................................4
8.       LIQUIDATED DAMAGES.......................................................................................6
9.       PUBLIC REGULATION........................................................................................6
10.      PRICING..................................................................................................7
11.      AUTHORIZED EQUIPMENT.....................................................................................8
12.      BILLING/TERMS OF PAYMENT.................................................................................9
13.      PRECEDENCE OF DOCUMENTS..................................................................................9
14.      USE OF CONFIDENTIAL INFORMATION..........................................................................9
15.      PUBLICITY...............................................................................................11
16.      TRADEMARKS AND TRADE NAMES..............................................................................12
17.      COMPLIANCE WITH LAWS....................................................................................12
18.      FORCE MAJEURE...........................................................................................12
19.      CENTURY COMPLIANCE......................................................................................12
20.      INDEMNIFICATION.........................................................................................13
21.      WARRANTY................................................................................................15
22.      INFRINGEMENT............................................................................................16
23.      PERMITS.................................................................................................17
24.      ASSIGNMENT..............................................................................................17
25.      TAXES...................................................................................................18
26.      RECORDS.................................................................................................18
27.      RIGHT OF ACCESS.........................................................................................18
28.      TERMINATION.............................................................................................18
29.      DISPUTE RESOLUTION......................................................................................20
30.      NOTICES.................................................................................................21
31.      NONWAIVER...............................................................................................22
32.      SEVERABILITY............................................................................................22
33.      SECTION HEADINGS........................................................................................22
34.      SURVIVAL OF OBLIGATIONS.................................................................................22
35.      CHOICE OF LAW...........................................................................................22
36.      ENTIRE AGREEMENT........................................................................................23
37.      SIGNATURES..............................................................................................23
</TABLE>

<TABLE>

<S>                                               <C>    
         EXHIBIT A-Affiliates                     Exhibit E-Reseller National Account Service Commitment 
         EXHIBIT B-Service Level Agreement        Exhibit F-Technical Standards 
         EXHIBIT C-Pricing
         EXHIBIT D-Authorized Equipment                        
</TABLE>



PageMart 09/28/98                                                 -CONFIDENTIAL-

<PAGE>   3




                                RESALE AGREEMENT

This Resale Agreement (this "Agreement") is made and entered into effective as
of September 1, 1998, by and between PageMart Wireless, Inc., a Delaware
corporation with offices for the purpose of this Agreement located at 3333 Lee
Parkway, Suite 100, Dallas, Texas 75219-5111 (hereinafter referred to as
"LICENSOR") and GTE Communication Systems Corporation, acting through its GTE
Supply division, for the benefit of itself and the affiliated companies listed
in Exhibit A ("Affiliates"), which may be modified from time to time by
RESELLER, with offices at 700 Hidden Ridge, Irving, Texas 75038 (hereinafter
referred to as "RESELLER").

WHEREAS, LICENSOR provides paging and wireless messaging services, voice
messaging services, and customer support services (the "Services"); and

WHEREAS, RESELLER desires to contract with LICENSOR to resell the Services in
accordance with Exhibit B, Service Level Agreement and, in connection therewith,
to receive blocks of PINS, Capcodes and DIDs (each as defined below).

WHEREAS, RESELLER desires to contract with LICENSOR to resell such Services and,
in connection therewith, to receive access ports and codes to LICENSOR's paging,
administrative and data systems.

THEREFORE, in consideration of the mutual promises and covenants contained
herein, the parties agree as follows:

1.       TERM

         This Agreement shall be effective on September 1, 1998 and shall
         continue in effect thereafter until August 31, 2001, unless terminated
         or modified in accordance with the provisions of this Agreement. This
         Agreement shall be automatically terminated unless renewed by RESELLER
         by written notice to LICENSOR not less than thirty (30) days prior to
         the expiration date. RESELLER may unilaterally renew this Agreement for
         additional periods of three years by providing LICENSOR with written
         notice not less than thirty (30) days prior to the expiration date of
         this or a succeeding contract term. This Agreement supersedes Agreement
         999999-93-12 dated November 1, 1993 and as amended but will not
         supersede any current Agreement with any other Affiliate.

2.       DEFINITIONS

         a.       Staffed Coverage - Coverage of any help desk or other service
                  which is staffed by a LICENSOR employed live-person for
                  real-time interaction with RESELLER.

         b.       DID - A local telephone number assigned by RESELLER or
                  LICENSOR to identify a specific pager on the LICENSOR's
                  network. By dialing the DID, the telephone network will switch
                  the call to a LICENSOR owned terminal, and the terminal will
                  associate the specific number with a specific pager/paging
                  device on the LICENSOR's network.

         c.       Equipment - Pagers and related message receiving devices.

         


PageMart 09/28/98                                                 -CONFIDENTIAL-

<PAGE>   4


         d.       Interconnections - Any and all devices, services,
                  circuits, systems, or related items

                  which connect any of the LICENSOR's various systems
                  (including, but not limited to; Paging Systems, Administrative
                  Systems, And Activation Systems).

         e.       Modification - Any addition, deletion, or reconfiguration to
                  any and/or all hardware and/or software associated with any
                  networks, network nodes, system, or system nodes.

         f.       Network Node And/or System Node - Any portion or individual
                  piece of any network or system which is intended to perform a
                  function which allows the network or system to fulfill its
                  intended function.

         g.       Non-functional - Not performing the function intended by
                  manufacturer, LICENSOR design, or portrayed to RESELLER via
                  coverage maps and/or other LICENSOR provided information.

         h.       Subscriber - A person or entity whose account is owned by the
                  RESELLER and whose services are provided by use of all or part
                  of the LICENSOR's Paging System.

         i.       Upgrade - Any addition of hardware or software which is
                  intended to improve or modify the performance of any network,
                  network node, system, or system node.

         j.       System Upgrade - Any addition of hardware or software which is
                  intended to improve or modify the performance of any system or
                  system node.

         k.       TNPP - Telocator Network Paging Protocol.

         l.       Calls - When discussing Pricing, Calls refers to the number of
                  telephone calls or pages a single account is allotted in any
                  given month. For the purpose of pricing LICENSOR's Services,
                  Calls will be aggregated as defined elsewhere in this
                  contract. When discussing DID or TAP interconnections to
                  LICENSOR's network, Calls refers to a telephone call into
                  LICENSOR's network.

         m.       Capcode - An alphanumeric/numeric number which is assigned to
                  one and only one paging device on any given frequency. This
                  number is, in effect, the paging devices address, and
                  therefore must be unique to each paging device. CAPCODES are
                  defined, developed, and controlled by the LICENSOR.

         n.       Latency - Any delay.

         o.       Coverage zone - Any area which has radio frequency coverage on
                  any LICENSOR owned frequency, with a minimum signal level of
                  -88db. as of the date of execution of this Agreement.

         p.       Root Cause Analysis - A report detailing the cause and effect
                  of a specific network deficiency. This report should identify,
                  at a minimum and in a reasonable amount of detail, the who,
                  what, when, where, why, and effect of any network deficiency.

PageMart 09/28/98                                                 -CONFIDENTIAL-
                                        2

<PAGE>   5

         q.       PIN - Personal Identification Number. A specific number
                  assigned by LICENSOR to identify a pager on the LICENSOR's
                  Network. By entering the PIN into LICENSOR's computer via a
                  touch-tone telephone or other devices, the respective pager is
                  activated.

         r.       On-call - When a LICENSOR employee can be contacted via pager,
                  cellular phone, or regular phone service and is available for
                  real-time interaction within a specified time frame.

         s.       Pending - Time of delay during which incoming calls are
                  rejected or blocked, or account activations, Modifications, or
                  deletions are not processed by any network, system, network
                  node, or system node.

         t.       Consumer Price Index - where identified within this Agreement
                  shall mean the CPI- U, U.S.City Average for all items, with
                  the index base period set as (1982-84=100).

3.       LICENSE

         a.       LICENSOR grants RESELLER a non-exclusive license to resell
                  LICENSOR's Services subject to the terms and conditions of
                  this Agreement, applicable law, and the rules, regulations and
                  decisions of the Federal Communications Commission or any
                  other applicable regulatory body.

         b.       RESELLER may license its own sub-agents, affiliates, or any
                  parent, subsidiary or affiliate of any third party with the
                  public intention of merging, acquiring or otherwise
                  affiliating itself with RESELLER announced before or at the
                  time of execution of this Agreement for the marketing,
                  promotion and resale of LICENSOR's Services, provided that
                  RESELLER shall provide sixty (60) days notice to LICENSOR of
                  all sub-agents and affiliates authorized by RESELLER for
                  promotion and resale on its behalf. RESELLER shall ensure that
                  its sub-agents, affiliates, or sub-licensees abide by the
                  terms and conditions of this Agreement.

4.       INDEPENDENT PARTIES

         In providing any Services or reselling any Services pursuant to this
         Agreement, each party is acting solely as an independent contractor and
         not as an agent of the other party. Each party shall be responsible for
         compliance with all laws, rules and regulations involving its
         respective employees or agents, including (but not limited to)
         employment of labor, hours of labor, health and safety, working
         conditions and payment of wages. Each party shall also be responsible,
         respectively, for payment of taxes, including federal, state, and
         municipal taxes, chargeable or assessed with respect to its employees
         or agents, such as social security, unemployment, worker's
         compensation, disability insurance and federal and state income tax
         withholding. Neither party undertakes by this Agreement or otherwise to
         perform or discharge any liability or obligation of the other party,
         whether regulatory or contractual, or to assume any responsibility
         whatsoever for the conduct of the business or operations of the other
         party. Nothing contained in this Agreement is intended to give rise to
         a partnership or joint venture between the parties or to impose upon
         the parties any of the duties or responsibilities of partners or joint
         venturers. Except as provided in this Agreement, neither party shall
         have the right, power, or authority to act or to create any 

PageMart 09/28/98                                                 -CONFIDENTIAL-
                                        3

<PAGE>   6




         obligation, express or implied, on behalf of the other party. All sales
         by RESELLER shall be in its own name and for its own account.

5.       SCOPE

         a.       This Agreement is non-exclusive and RESELLER is under no
                  obligation to LICENSOR to resell any certain amount of
                  Services.

         b.       LICENSOR hereby agrees to provide Services in an efficient,
                  economic, and timely fashion in accordance with generally
                  accepted commercial and business practices, and all relevant
                  sections of this contract.

6.       LICENSOR RESPONSIBILITIES

         a.       LICENSOR shall provide RESELLER's Subscribers with access to
                  its Paging System and shall provide continuous (when
                  commercially feasible) network service in the geographical
                  locations where LICENSOR is legally authorized to provide
                  Services in accordance with all relevant sections of this
                  Agreement, including all Exhibits attached hereto.

         b.       The Services provided by LICENSOR shall include but not be
                  limited to:

                  i.       Numeric display - Numeric display paging. LICENSOR
                           guarantees RESELLER the use of a minimum enough
                           bandwidth/frequency space to support a net growth
                           rate of [*] percent per year above the previous
                           year's base as of the previous December 31; and

     ii.      Alphanumeric - Alphanumeric paging. LICENSOR guarantees RESELLER
              the use of a minimum FLEX bandwidth/frequency space to support a
              net growth rate of [*] percent per year for Local Alphanumeric
              Paging above the previous year's base. LICENSOR guarantees
              RESELLER the use of a minimum FLEX or REFLEX bandwidth/frequency
              space to support a net growth rate of [*] percent per year for
              State, and Regional, and Nationwide Alphanumeric Paging above the
              previous year's base as of the previous December 31.
                                                  
         c.       LICENSOR shall assign and coordinate all telephone and Capcode
                  numbers in order to ensure the initiation of service and to
                  ensure ongoing service to Subscribers placed on LICENSOR's
                  Paging System in accordance with Exhibit B.

7.       RESELLER RESPONSIBILITIES

         a.       RESELLER shall use commercially reasonable efforts to promote,
                  solicit, market the Services.

         b.       RESELLER shall be solely responsible for providing all sales,
                  equipment and customer support services to its Subscribers.

         c.       Upon LICENSOR's reasonable request, RESELLER shall provide
                  non-binding sales forecasts by quarter for the following year.

PageMart 09/28/98                                                 -CONFIDENTIAL-

                                        4


*  CONFIDENTIAL INFORMATION HAS BEEN DELETED. THE OMITTED MATERIAL HAS BEEN 
   FILED SEPARATELY WITH THE COMMISSION PURSUANT TO AN APPLICATION FOR 
   CONFIDENTIAL TREATMENT.

<PAGE>   7




         d.       RESELLER shall be solely responsible for all billings to and
                  collections from its Subscribers, including but not limited to
                  the sending of monthly bills, collection of amounts owed or
                  past due, and the collection and return of all applicable
                  taxes on such service or equipment rentals.

         e.       RESELLER shall provide and mail all announcements or notices
                  required to be mailed to its Subscribers as required by any
                  regulatory agency.

         f.       RESELLER shall assign Capcode, DID's, and PIN's to its
                  Subscribers only from the group of Capcodes, DID's and PIN's
                  assigned to RESELLER by LICENSOR. RESELLER shall ensure that a
                  given Capcode, DID or PIN is not assigned to more than one
                  pager, provided that LICENSOR has not given RESELLER duplicate
                  Capcodes, DID's or PIN's, which were then assigned in
                  violation of this provision without the fault or knowledge of
                  RESELLER. Under Transmission Only Paging Services and/or
                  Quasi-RESELLER Paging Services as described below, RESELLER
                  will provide the DID numbers, and LICENSOR will provide the
                  Capcodes and PIN NUMBERS to RESELLER. LICENSOR will provide
                  quantities of Capcodes and PINS to RESELLER as necessary to
                  support RESELLER's on-going sales efforts and existing
                  subscriber base.

                  i.       Under Full RESELLER Paging Services the RESELLER will
                           procure customers which will be activated on one of
                           LICENSOR's paging terminals and in LICENSOR's billing
                           system via PRIME, Vantive, WinFast, ActFast,
                           Dial-Now, or other LICENSOR provided activation
                           systems. LICENSOR will provide the pager number and
                           all in-bound calling. When a valid customer receives
                           a page the in-bound call is accepted by LICENSOR (at
                           the terminal), the customer is validated in the
                           terminal, and the page is transmitted to the
                           transmitters in the correct coverage zone via
                           satellite simulcast. The transmitters then send the
                           page out via one of LICENSOR's frequencies (that
                           frequency which matches the receiver in that specific
                           customer's pager). Multiple sub-services are to be
                           provided by LICENSOR to RESELLER under this service
                           as defined below.

                  ii.      Under Quasi-RESELLER Paging Services the RESELLER
                           will procure customers which will be activated on a
                           RESELLER paging terminal, one of LICENSOR's paging
                           terminals, and LICENSOR's billing system via PRIME,
                           Vantive, WinFast, ActFast, Dial-Now, or other
                           LICENSOR provided activation systems. When a valid
                           customer receives a page the in-bound call is
                           accepted by RESELLER (at the terminal), the customer
                           is validated in the terminal, and the page is
                           transmitted to a LICENSOR terminal via TNPP. The data
                           is directed by LICENSOR's terminal to the
                           transmitters in the correct coverage zone via
                           satellite simulcast. The transmitters then send the
                           page out via one of LICENSOR's frequencies (that
                           frequency which matches the receiver in that specific
                           customer's pager). Multiple sub-services are to be
                           provided by LICENSOR to RESELLER under this service
                           as defined below.


PageMart 09/28/98                                                 -CONFIDENTIAL-
                                        5

<PAGE>   8




                  iii.     Under Transmission Only Paging Services the RESELLER
                           will procure customers which will be activated on a
                           RESELLER paging terminal via a RESELLER provided
                           activation system. Billing will be based on the
                           amount of data that passes through the LICENSOR's
                           system as defined in the pricing section of this
                           contract. When a valid customer receives a page the
                           in-bound call is accepted by RESELLER (at the
                           RESELLER owned terminal), the customer is validated
                           in the terminal, and the page is transmitted to a
                           LICENSOR terminal via TNPP. The data is directed by
                           LICENSOR's terminal to the transmitters in the
                           correct coverage zone via satellite simulcast. The
                           transmitters then send the page out via one of
                           LICENSOR's frequencies (that frequency which matches
                           the receiver in that specific customer's pager).
                           Multiple sub-services are to be provided by LICENSOR
                           to RESELLER under this service as defined below.

         g.       RESELLER, in accordance with all manufacturer's
                  specifications, shall maintain and keep in good working order
                  all equipment leased by RESELLER to its Subscribers pursuant
                  to the terms of this Agreement.

8.       LIQUIDATED DAMAGES

         The parties recognize the RESELLER will suffer substantial economic
         loss should LICENSOR fail to meet various performance criteria set
         forth in this Agreement and all exhibits attached hereto. Because such
         loss is often difficult to quantify in particular instances, the
         parties have agreed that LICENSOR will pay to RESELLER certain sums
         (pursuant to various described formulae) characterized herein as
         liquidated damages in the event of LICENSOR's failure to meet agreed
         performance criteria. These liquidated damages are not penalties, but
         rather are the parties good faith estimation of RESELLER's damages
         caused by LICENSOR's failure to meet such performance criteria.

9.       PUBLIC REGULATION

         a.       It is understood that the ultimate control and responsibility
                  for the standard and quality of Services required under the
                  provisions of any license issued by the FCC to LICENSOR shall
                  be retained, rest and remain the prerogative and obligation
                  solely of LICENSOR. No provision of this Agreement shall be
                  construed as vesting in RESELLER any control whatsoever of the
                  licenses, radio communication facilities, or operations of
                  LICENSOR.

         b.       This Agreement is subject to all of the terms and conditions
                  of LICENSOR's outstanding authorizations from the FCC and the
                  utility regulatory agencies in the states to which this
                  Agreement pertains, as such tariffs and authorizations are
                  presently in effect or as they may hereafter be revised.
                  Nothing in this Agreement shall be construed so as to impair
                  or diminish LICENSOR's control over the facilities of the
                  applicable stations.

         c.       This Agreement shall be subject to the approval of the FCC and
                  any regulatory agency, if such approval shall be required.

         d.       This Agreement shall be terminated, amended, revised, or
                  supplemented 



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                                        6

<PAGE>   9



                  immediately if required by the FCC or any state regulatory
                  agency.

         e.       The imposition by the FCC or any regulatory agency of any
                  amendments, revisions, deletions or supplements to this
                  Agreement shall thereby relieve LICENSOR and RESELLER of any
                  obligations or liabilities to the other resulting from the
                  provisions of this Agreement which were ordered amended,
                  revised, deleted or supplemented.

10.      PRICING

         a.       RESELLER hereby agrees to pay LICENSOR the charges and fees
                  for Services as specified in Exhibit C, Pricing and in
                  accordance with the terms and conditions contained herein.

         b.       The charges and fees specified in Exhibit C shall commence at
                  the time RESELLER activates each particular number in
                  LICENSOR's Paging System. Such charges shall continue for each
                  number for a minimum of thirty (30) days, and thereafter until
                  the number in question is canceled or otherwise disconnected
                  in accordance with the provisions herein. When a number is
                  activated in the middle of a month, the applicable rate will
                  be prorated to the first of the following month so that all
                  subsequent bills will be tendered thereafter on a monthly
                  basis.

         c.       The specified prices in Exhibit C shall remain firm for the
                  first twenty-four (24) months of this Agreement. After the
                  twenty-fourth (24th) month from the execution of this
                  agreement, LICENSOR is not obligated to, but may, increase
                  prices once in each twelve (12) month period by giving written
                  notice to RESELLER at least ninety (90) days prior to the
                  proposed effective date of the new pricing. LICENSOR shall not
                  increase the prices in Exhibit C by more than the lesser of
                  the Consumer Price Index, as defined within this Agreement, or
                  * in any twelve (12) month period.

         d.       Effect of Change in Law or Regulation. Notwithstanding
                  anything to the contrary contained in the Agreement or any
                  schedule or exhibit attached hereto, LICENSOR shall have the
                  right to change the fees changed for Services or change the
                  Services at any time upon thirty (30) days prior notice to
                  RESELLER to the extent that such change is necessary to comply
                  with applicable law or regulation, whether state or federal,
                  or to the extent that a change in applicable law or regulation
                  substantially affects LICENSOR's operating costs. LICENSOR
                  shall provide detailed documentation substantiating the change
                  in operating costs RESELLER must approve any changes in the
                  Service fees or the Services in writing prior to any changes
                  in the Service fees or the Services, which approval will not
                  be unreasonably withheld. If RESELLER and LICENSOR cannot
                  mutually agree on the extent/effect of these changes on
                  LICENSOR's operating costs, then the parties agree to utilize
                  Section 29, DISPUTE RESOLUTION to resolve the issue.

         e.       LICENSOR warrants and represents that the prices for Services
                  hereunder are no less favorable than those currently extended
                  to any other similarly situated RESELLER of LICENSOR of the
                  same or like classification as RESELLER for the same volume
                  achieved by RESELLER for the same or like Services.

PageMart 09/28/98                                                 -CONFIDENTIAL-
                                        7


*  CONFIDENTIAL INFORMATION HAS BEEN DELETED. THE OMITTED MATERIAL HAS BEEN 
   FILED SEPARATELY WITH THE COMMISSION PURSUANT TO AN APPLICATION FOR 
   CONFIDENTIAL TREATMENT.

<PAGE>   10


         f.       Where allowable by the state regulating authority, the prices
                  charged by RESELLER to its Subscribers for all Services shall
                  be determined solely by RESELLER. In states where tariff rates
                  are required, RESELLER may operate under its own tariff.

11.      AUTHORIZED EQUIPMENT

         a.       RESELLER and its Subscribers shall only activate and utilize
                  the equipment which is either listed in Exhibit D, AUTHORIZED
                  EQUIPMENT or complies with all technical standards as defined
                  in Exhibit F in connection with LICENSOR's Services, however,
                  unless equipment is listed on Exhibit D, LICENSOR will not
                  provide troubleshooting support for equipment problems and
                  LICENSOR will not be responsible for meeting the SLA
                  requirements in Exhibit B, Section 2.4. LICENSOR may revise
                  Exhibit D from time to time upon delivery of written notice to
                  RESELLER at least one hundred twenty (120) days prior to the
                  effective date of such revision. If LICENSOR amends Exhibit D
                  in such a manner whereby previously authorized equipment is no
                  longer authorized for use on LICENSOR's Paging System,
                  LICENSOR agrees to continue to provide service to such
                  previously authorized equipment receiving Services as of the
                  date of the notice for one (1) year after the date of such
                  notice.

         b.       If LICENSOR modifies LICENSOR's network in any manner after
                  the date of execution of this Agreement whereas any previously
                  authorized equipment sold by RESELLER to RESELLER's customers
                  no longer functions either; (i) as a unit, or (ii) in
                  conjunction with the Network (i.e. garbled messages or
                  consistent garbled messages), then LICENSOR will bear the
                  expense to provide substitute authorized equipment in exchange
                  for the previously authorized equipment then utilized by
                  RESELLER's Subscribers. All pagers previously sold by LICENSOR
                  to RESELLER are included in this Agreement, as they are still
                  functionally operational on this network. Nothing in this
                  section shall be construed such that LICENSOR is responsible
                  for end user devices which are malfunctioning as an individual
                  device (i.e. the problem is specific to a specific individual
                  pager, and not inherent in substantially all devices of both
                  the same manufacturer and model).

         c.       LICENSOR's liability will not exceed the net book value of the
                  equipment based on a five (5) year straight line depreciation
                  schedule from the date of purchase from manufacturer or other
                  supplier.

         d.       LICENSOR is not liable for equipment which has been recalled
                  by manufacturer and for which manufacturer either repairs or
                  replaces. However, nothing in this section should be construed
                  to limit LICENSOR's responsibility to thoroughly test all
                  equipment for compatibility with LICENSOR's network prior to
                  approving the equipment for inclusion in Exhibit D.

         e.       LICENSOR will provide commercially reasonable technical
                  standards for new equipment within thirty (30) days after the
                  signing of this Agreement, or RESELLER will have the right to
                  develop commercially reasonable standards at RESELLER's sole
                  discretion. These standards will be included as an automatic
                  amendment to this contract as Exhibit F. Any equipment which
                  is developed by or on behalf of RESELLER must meet these
                  commercially reasonable technical standards in order 



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                  for RESELLER to utilize the equipment on LICENSOR's network.
                  However, LICENSOR reserves the right to thoroughly test all
                  new equipment for technical compatibility with the network. If
                  LICENSOR determines that the new equipment is not technically
                  compatible with the network, regardless of whether or not the
                  equipment meets the technical standards, LICENSOR agrees that
                  RESELLER may utilize the equipment on LICENSOR's network, and
                  RESELLER agrees that the equipment will not be added to
                  Exhibit D, Authorized Equipment, provided however, that
                  LICENSOR provides detailed analysis of the technical
                  incompatibility, thus providing RESELLER with the opportunity
                  to correct any such technical incompatibility. Once any such
                  technical incompatibilities are corrected, RESELLER may
                  resubmit the new equipment for testing for technical
                  compatibility with the network and, subsequently, inclusion in
                  Exhibit D upon acceptance, which acceptance shall not be
                  unreasonably withheld.

12.      BILLING/TERMS OF PAYMENT

         a.       LICENSOR shall provide RESELLER monthly billing in accordance
                  with Exhibit B, Service Level Agreement, Section 4,
                  Billing/Invoicing Services.

         b.       Payment for Services shall be due thirty (30) days from the
                  date of receipt of an undisputed invoice, unless payment terms
                  more favorable to RESELLER are stated on LICENSOR's invoice
                  and RESELLER elects to pay on such terms. RESELLER will remit
                  payment to LICENSOR only for the amounts not disputed in good
                  faith by RESELLER. If a disputed amount is going to be with
                  held from a current invoice, RESELLER will notify LICENSOR,
                  giving reasons for the dispute prior to payment due date.
                  RESELLER shall retain the right to dispute any invoice amount
                  (paid or unpaid) within ninety (90) days after the date of
                  receipt. If RESELLER fails to make timely payment on any
                  monthly undisputed invoice amount, RESELLER will pay LICENSOR
                  interest from the date due at the rate of one and one half (1
                  1/2%) percent per month or the maximum rate allowed by law,
                  whichever is lower.

13.      PRECEDENCE OF DOCUMENTS

         All orders for Services placed during the term hereof shall be subject
         to and governed by the provisions contained herein. The terms and
         conditions of this written Agreement shall control over any conflicting
         or inconsistent terms and conditions contained in any order placed with
         LICENSOR by RESELLER.

14.      USE OF CONFIDENTIAL INFORMATION

         a.       In order for the parties to perform their respective
                  obligations under this Agreement, it may be necessary for
                  either party to disclose to the other technical, personnel
                  and/or business information in written, graphic, electronic,
                  oral or other tangible or intangible forms including, but not
                  limited to, specifications, records, data, computer programs,
                  drawings, schematics, know-how, notes, models, reports and
                  samples. Such information may contain proprietary or
                  confidential material, or material subject to applicable laws
                  regarding secrecy of communications or trade secrets
                  (Confidential Information).


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         b.       Each party acknowledges and agrees:

                  i.       That all Confidential Information acquired by either
                           party from the other shall be and shall remain the
                           exclusive property of the disclosing party;

                  ii.      To identify in writing as confidential or
                           proprietary, or mark as confidential or proprietary,
                           any information that either party deems to be
                           Confidential Information;

                  iii.     That information that is disclosed orally shall not
                           be considered Confidential Information unless it is
                           reduced to writing or to a written summary that
                           identifies the orally-disclosed topics to be
                           considered as Confidential Information and such
                           writing is provided to the recipient at the time of
                           disclosure or within thirty (30) days thereafter;


                  iv.      To receive in confidence any Confidential
                           Information; to limit access to such Confidential
                           Information to authorized employees, agents and
                           contractors (covered by obligations at least as
                           restrictive as those set forth in this Section) who
                           have a need to know the Confidential Information in
                           order for the party to perform its obligations under
                           this Agreement and who have been informed of the
                           confidential and proprietary nature; not to disclose,
                           reveal or divulge any Confidential Information or
                           authorize any other person to do so except: (1) as
                           specifically approved in writing by the disclosing
                           party, or; (2) as required in connection with the due
                           and proper performance by the receiving party of its
                           obligations under this Agreement. (which shall not be
                           deemed to include disclosure to consultants, advisors
                           or other third parties which are not full-time,
                           regular employees of the receiving party. However,
                           disclosure may be made to consultants, advisors, or
                           other contractors which have a need to know and which
                           are bound by confidentiality agreements no less
                           stringent than this Agreement);

                  v.       To use such Confidential Information only for the
                           purposes of performing their obligations under this
                           Agreement and for such other purposes as may be
                           agreed upon between the parties in writing;

                  vi.      If a receiving party receives a request to disclose
                           any Confidential Information (whether pursuant to a
                           valid and effective subpoena, an order issued by a
                           court or other governmental authority of competent
                           jurisdiction or otherwise) on advice of legal counsel
                           that disclosure is required under applicable law,
                           such party agrees that, prior to disclosing any
                           Confidential Information, it shall: (1) notify the
                           disclosing party of the existence and terms of such
                           request or advice, (2) cooperate with the disclosing
                           party in taking legally available steps to resist or
                           narrow any such request or to otherwise eliminate the
                           need for such disclosure, if requested to do so by
                           the disclosing party, and (3) if disclosure is
                           required, cooperate with the disclosing party in
                           taking legally available steps to obtain a protective
                           order or other reliable assurance that confidential
                           treatment will be afforded to such portion of the
                           Confidential Information as is required to be
                           disclosed;



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                  vii.     Upon request of the disclosing party, to return all
                           Confidential Information to such party, or to destroy
                           any documents, computer media or records, in written,
                           graphic, or other tangible form, that contain any
                           Confidential Information;

                  viii.    That the obligations with respect to Confidential
                           Information shall extend for a period of five (5)
                           years beyond completion of the term of this
                           Agreement.

                  ix.      That nothing contained in this Section shall be
                           construed as a license or permission to make, use, or
                           sell the Confidential Information or Services derived
                           therefrom.

         c.       The obligations contained in this Section do not apply to
                  Confidential Information that:



                  i.       As shown by reasonably documented proof, was in the
                           receiving party's possession prior to receipt thereof
                           from the disclosing party;

                  ii.      As shown by reasonably documented proof, was received
                           by one party in good faith from a third party not
                           subject to a confidential obligation to the other
                           party;

                  iii.     Now is or later becomes publicly known through no
                           breach of confidential obligation by the receiving
                           party;

                  iv.      Is disclosed pursuant to a requirement imposed by a
                           governmental agency or is otherwise required to be
                           disclosed by operation of law, provided that the
                           party receiving the request for the information has
                           fully complied with its obligations under Section
                           14.(b)(iv);

                  v.       Was developed by the receiving party without the
                           developing persons having access to any of the
                           Confidential Information received from the other
                           party;

                  vi.      Is authorized in writing by the disclosing party to
                           be released or is designated in writing by the source
                           as no longer being confidential or proprietary.

         d.       It is agreed that a violation of any of the provisions of this
                  Section will cause irreparable harm and injury to the
                  disclosing party and that party shall be entitled, in addition
                  to any other rights and remedies it may have at law or in
                  equity, to seek an injunction enjoining and restraining the
                  receiving party from doing or continuing to do any such act
                  and any other violations or threatened violations of this
                  Section.

15.      PUBLICITY

         Each party agrees not to provide copies of this Agreement, or otherwise
         disclose the terms of this Agreement, to any third party without the
         prior written consent of the other party; provided, however, that
         either party may, without obtaining the other party's consent, provide
         copies or make disclosures to prospective purchasers of the business of
         such party, 


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         such party's affiliates, to comply with applicable laws or regulations
         or any regulatory or judicial body requesting such information. The
         parties further agree to submit to one another, for written approval,
         all advertising, sales promotion, press releases and other publicity
         matters relating to the Services performed pursuant to this Agreement,
         when its respective name or mark is mentioned or language from which
         the connection of said name or mark may be inferred or implied. The
         parties further agree not to publish or use such advertising, sales
         promotions, press releases, or publicity matters without such prior
         written approval. Any approval required under this Section shall not be
         unreasonably withheld or delayed by either party.

16.      TRADEMARKS AND TRADE NAMES

         Except as specifically set out in the Agreement, nothing in this
         Agreement shall grant, suggest or imply any authority for one party to
         use the name, trademarks, service marks or trade names of the other for
         any purpose whatsoever, unless written permission is granted by the
         other party prior to usage.

17.      COMPLIANCE WITH LAWS

         The parties hereto shall comply with the provisions of all applicable
         federal, state, and local laws, ordinances, regulations and codes
         (including procurement of required permits or certificates) in their
         respective performance under this Agreement including, but not limited
         to, the Fair Labor Standards Act of 1938, safety and environmental
         laws, rules and regulations, any laws, rules and regulations regarding
         wages, hours, fringe benefits and taxes, and federal and state
         Occupational Safety and Health Act Laws.

18.      FORCE MAJEURE

         If performance of this Agreement is prevented, restricted or interfered
         with by reason of acts of God, wars, revolution, civil commotion, acts
         of public enemy, embargo, acts of government in its sovereign capacity,
         labor difficulties, including without limitation, strikes, slowdowns,
         picketing or boycotts, or other circumstances beyond the reasonable
         control and not involving any fault or negligence of the party
         affected, the party affected, upon giving prompt notice to the other
         party, shall be excused from such performance on a day-to-day basis
         during the continuance of such prevention, restriction, or interference
         (and the other party shall likewise be excused from performance of its
         obligations on a day-to-day basis during the same period), provided,
         however, that the party so affected shall use its best reasonable
         efforts to avoid or remove such causes of nonperformance and both
         parties shall proceed immediately with the performance of their
         obligations under this Agreement whenever such causes are removed or
         cease.

19.      CENTURY COMPLIANCE

         LICENSOR represents and warrants that by June 30, 1999, its Paging
         System and any software provided to RESELLER for use in association
         with the Services is capable of correctly processing, providing and
         receiving date data as well as properly exchanging accurate date data
         with all products (for example hardware, software and firmware) with
         which its Paging System and software is designed to be used and will
         not malfunction or cease to function due to an inability to correctly
         process such date data, including, but not limited to, transitions to
         or from the years 1999 to 2000.


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<PAGE>   15


20.      INDEMNIFICATION

         a.       LICENSOR shall indemnify, defend, and hold harmless RESELLER
                  and its affiliates, shareholders, directors, officers,
                  employees, contractors, agents and other representatives from
                  and against all demands, claims, damages, liabilities,
                  expenses (including reasonable fees and disbursements of
                  counsel), judgments, settlements and penalties of every kind
                  (collectively "Claims") based on (i) personal injury, death,
                  or property damage arising from or related to
                  LICENSOR's (either directly or through its officers, agents,
                  subcontractors or representatives) negligence or misconduct in
                  or related to performance of the Services under this
                  Agreement, or (ii) violation of any term of this Agreement or
                  matters referred to in Subsection 20 (b) below, provided,
                  however the obligation set out in this Section (ii) shall not
                  apply to Claims arising from or related to; (1) violations of
                  any term of this Agreement of the type that provides a
                  specific remedy (to include Liquidated Damages set forth in
                  Exhibit B), or; (2) guarantees or express warranties given by
                  RESELLER to its subscribers. The preceding proviso shall not
                  apply to Claims of third parties to the extent that they are
                  based on actual gross negligence or willful misconduct of
                  LICENSOR. The foregoing indemnity shall not apply in the case
                  of Claims which solely arise from the negligence, misconduct
                  or other fault of RESELLER. It shall apply, however, if a
                  Claim is the result of the joint negligence, joint misconduct,
                  or joint fault of LICENSOR and RESELLER, but in such a case
                  the amount of the Claim for which RESELLER is entitled to
                  indemnification shall be limited to that portion of such Claim
                  attributable to the negligence, misconduct or other fault of
                  LICENSOR. The obligations of this provision are in addition to
                  LICENSOR's obligation to provide insurance and shall not be
                  limited by any limitation on the amount or type of damages,
                  compensation or benefits payable by LICENSOR under the
                  Worker's Compensation Acts, Longshoremen and Harborworker's
                  Act, Disability Benefits Act or any other employee benefit
                  act.

         b.       Without limitation of 20 (a) above, LICENSOR shall, to the
                  fullest extent permitted by law, defend, indemnify and hold
                  harmless RESELLER, its officers, agents and employees, from
                  all Claims of every kind arising from or related to the
                  following matters:

                  i.       LICENSOR's failure to comply with all federal, state
                           or local laws, rules or regulations applicable to
                           LICENSOR's employees, including, without limitation,
                           the laws, rules or regulations referred to in Section
                           17, COMPLIANCE WITH LAWS and Section 25, TAXES;

                  ii.      LICENSOR's failure to comply with terms of Section
                           14, CONFIDENTIAL INFORMATION, regarding proprietary
                           information of RESELLER;

                  iii.     LICENSOR's failure to pay all fees and royalties for
                           the use of patented articles or methods in connection
                           with the Services;

                  iv.      LICENSOR's failure to obtain or maintain the Permits
                           referred to in Section 23, PERMITS, except for those
                           Permits that RESELLER has expressly 


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<PAGE>   16



                           agreed to obtain and maintain at RESELLER's expense;

                  v.       Contributions to multiemployer pension plans
                           affecting LICENSOR's employees;

                  vi.      Any mechanics' or materialmen's liens or any other
                           liens or encumbrances filed in respect of or placed
                           upon any real property or improvements owned or
                           leased by RESELLER as a result of any Services
                           performed by or any other act or omission on the part
                           of LICENSOR or any subcontractor or other person
                           claiming by, through or under LICENSOR; or

                  vii.     Any injury, sickness, disease or death of any person,
                           damage to any properties or assets or remediation of
                           any soil, surface water or groundwater resulting from
                           the processing, use, distribution, treatment,
                           storage, placement, removal, transportation or
                           disposal of any Hazardous Materials by LICENSOR or
                           its officers, agents subcontractors or
                           representatives.

         c.       RESELLER agrees to indemnify, defend and hold harmless
                  LICENSOR and its affiliates, shareholders, directors,
                  officers, employees, contractors, agents and other
                  representatives from and against any and all Claims arising
                  from or related to:

                  i.       Any negligent misrepresentations of the Services to
                           RESELLER's subscribers; and

                  ii.      Contributions to multiemployer pension plans
                           affecting RESELLER's employees.

         d.       RESELLER shall promptly notify LICENSOR in writing of any
                  suits, Claims or demands covered by this indemnity. Promptly
                  after receipt of such notice, LICENSOR shall assume the
                  defense of such claim with counsel reasonably satisfactory to
                  RESELLER. If LICENSOR fails, within a reasonable time after
                  receipt of such notice, to assume the defense with counsel
                  reasonably satisfactory to RESELLER, or if, in the reasonable
                  judgment of RESELLER, a direct or indirect conflict of
                  interest exists between the parties with respect to the Claim,
                  or if in the sole judgment of RESELLER the assumption and
                  conduct of the defense by LICENSOR would materially and
                  adversely affect RESELLER in any manner or prejudice its
                  ability to conduct a successful defense, then RESELLER shall
                  have the right to undertake the defense, compromise and
                  settlement of such Claim for the account and at the expense of
                  LICENSOR. Notwithstanding the above, if RESELLER in its sole
                  discretion so elects, RESELLER may also participate in the
                  defense of such actions by employing counsel at its expense,
                  without waiving LICENSOR's obligations to indemnify or defend.
                  An indemnified party shall not settle or compromise any Claims
                  against it or consent to the entry of any judgments without
                  the prior written consent of the indemnifying party and
                  without an unconditional release of all liability by each
                  claimant or plaintiff to the indemnified party.

         e.       RESELLER and LICENSOR each agree to maintain during the term
                  hereof all insurance and/or bonds required by law or this
                  Agreement, including, but not limited 


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                  to (i) Workers' Compensation and related insurance as
                  prescribed by applicable law; (ii) employer's liability
                  insurance with limits of at least $1,000,000 for each
                  occurrence, and (iii) comprehensive general liability
                  insurance including products liability, and, if the use of
                  motor vehicles is required, comprehensive motor vehicle
                  liability insurance, each with limits of at least $2,000,000
                  for combined single limit for bodily injury, including death,
                  and/or property damage. RESELLER and LICENSOR each shall cause
                  the other to be included as an Additional Insured under their
                  respective policies and RESELLER's and LICENSOR's appropriate
                  coverage under such policies shall be primary. RESELLER and
                  LICENSOR each shall furnish certificates or evidence of the
                  foregoing insurance indicating the amount and nature of such
                  coverage, the expiration date of each policy, and stating that
                  no material change or cancellation of any such policy shall be
                  effective unless thirty (30) days advanced written notice is
                  given to the party named as an additional insured.
                  Notwithstanding the above, LICENSOR and RESELLER shall each
                  have the option, where permitted by law, to self-insure any or
                  all of the foregoing risks.

21.      WARRANTY

         a.       Except as expressly set forth in this Agreement, LICENSOR
                  makes no warranty, either express or implied, concerning Its
                  facilities, products, or Services, including, without
                  limitation, warranties of merchantability or fitness for a
                  particular purpose. RESELLER acknowledges that service
                  interruptions in the telecommunications industry frequently
                  are due to circumstances beyond a carrier's control and are
                  difficult to assess as to cause or resulting damages. If,
                  notwithstanding the other terms of this Agreement, LICENSOR is
                  liable for any mistakes, omissions, interruptions, delays,
                  errors, or defects in transmission of pages on LICENSOR's
                  Paging System, then the parties agree that, except as set
                  forth in Exhibit B, LICENSOR shall not be liable beyond the
                  actual and direct loss arising therefrom. However, LICENSOR's
                  liability to RESELLER for each period of service disruption or
                  defect in transmission will in no event exceed the amount of
                  Fifty thousand dollars ($50,000) provided that nothing herein
                  shall limit any amounts due to RESELLER pursuant to Exhibit B.
                  Neither party shall be liable for any special, incidental or
                  other consequential damage or losses, including without
                  limitation lost profits, or for loss of stored, transmitted or
                  recorded data, even if it has been advised of the possibility
                  of such damages, nor shall either party be liable for any such
                  damages due to the fault or negligence of the other party or
                  its employees, agents, or representatives. The preceding two
                  sentences shall not limit a party's obligations under Section
                  22, INFRINGEMENT, or indemnification for third party claims
                  arising from death, or personal injury, or willful misconduct
                  of a party, or damage to tangible property, or gross
                  negligence of a party.

         b.       Section 20 (a) shall not apply to any Losses arising out of
                  any claim by a Subscriber of RESELLER, added by RESELLER after
                  the execution of this Agreement, unless the agreement between
                  RESELLER and such Subscriber contains provisions substantially
                  as follows:

                  i.       Disclaimer of Warranties. [GTE OR ANY THIRD PARTY
                           SERVICE PROVIDER] DISCLAIMS ALL EXPRESS OR IMPLIED
                           WARRANTIES WITH RESPECT TO THE EQUIPMENT AND
                           SERVICES, INCLUDING WITHOUT 


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                           LIMITATION ANY WARRANTY OF MERCHANTABILITY OR FITNESS
                           FOR A PARTICULAR PURPOSE.

                  ii.      Limitation of Liability. Customer acknowledges that
                           pages and messages may be lost or garbled for many
                           reasons other than the negligence of [GTE OR ANY
                           THIRD PARTY SERVICE PROVIDER], such as dialing
                           errors, power failures, network equipment failures,
                           electronic interference and the recipient's messaging
                           device being turned off or outside the coverage area
                           or having a weak battery. [GTE OR ANY THIRD PARTY
                           SERVICE PROVIDER], SHALL NOT BE LIABLE FOR ANY
                           DAMAGES ARISING OUT OF (i) LATENT OR PATENT EQUIPMENT
                           OR SERVICES DEFECTS, OR (ii) LOSS OF USE OF ANY OF
                           THE EQUIPMENT OR SERVICES, OR (iii) ANY ACCIDENT OR
                           INJURY CAUSED BY THE EQUIPMENT OR THE SERVICES WHEN
                           SUCH ACCIDENT OR INJURY IS NOT DUE TO THE GROSS
                           NEGLIGENCE OR WILLFUL MISCONDUCT OF [GTE OR ANY THIRD
                           PARTY SERVICE PROVIDER], OR (iv) ANY FAILURE TO
                           ACCURATELY TRANSMIT A MESSAGE OR ANY RECIPIENT'S
                           FAILURE TO RECEIVE A MESSAGE UNLESS SUCH FAILURE IS
                           DUE TO [GTE'S OR ANY THIRD PARTY SERVICE PROVIDER'S]
                           GROSS NEGLIGENCE OR WILLFUL MISCONDUCT. [GTE OR ANY
                           THIRD PARTY SERVICE PROVIDER] SHALL NOT BE LIABLE FOR
                           LOST PROFITS OR EXEMPLARY, SPECIAL, INCIDENTAL,
                           CONSEQUENTIAL OR PUNITIVE DAMAGES ARISING DIRECTLY OR
                           INDIRECTLY OUT OF THIS AGREEMENT, THE EQUIPMENT OR
                           THE SERVICES. IF ANY LIMITATION OF LIABILITY SET
                           FORTH HEREIN IS UNENFORCEABLE OR INAPPLICABLE FOR ANY
                           REASON, [GTE'S OR ANY THIRD PARTY SERVICE PROVIDER'S]
                           MAXIMUM AGGREGATE LIABILITY TO CUSTOMER UNDER ANY
                           LEGAL THEORY (INCLUDING ITS OWN NEGLIGENCE) FOR
                           DAMAGES ARISING DIRECTLY OR INDIRECTLY OUT OF THIS
                           AGREEMENT, THE EQUIPMENT OR THE SERVICES WILL NOT
                           EXCEED THE LESSER OF THE ACTUAL DIRECT DAMAGES
                           SUFFERED BY CUSTOMER OR THE AMOUNT PAID BY CUSTOMER
                           FOR THE SPECIFIC UNIT OF EQUIPMENT OR SERVICE AND
                           SERVICE PERIOD OUT OF WHICH THE CLAIM AROSE.

22.      INFRINGEMENT

         a.       LICENSOR agrees to indemnify, defend and hold harmless
                  RESELLER and its affiliates, shareholders, directors,
                  officers, employees, contractors, agents and other
                  representatives from and against any and all Claims (as
                  defined in Section 20 (a)) arising from or relating to any
                  actual or alleged infringement or misappropriation of any
                  patent, trademark, copyright, trade secret or any actual or
                  alleged violation of any other intellectual property rights
                  arising from or in connection with the software provided or
                  the Services performed under this Agreement regardless of
                  whether such software or Services form the entire basis or
                  only a portion of the basis for such claims of infringement,
                  misappropriation or violation. Notwithstanding anything to the
                  contrary contained in this Agreement (including, but not
                  limited to, Section 20 (a), the provisions of this Section 22
                  (a) shall govern the rights of RESELLER and its affiliates,
                  shareholders, directors, officers, employees, contractors,
                  agents and 



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<PAGE>   19


                  other representatives to indemnification for claims of
                  infringement, misappropriation or violation of intellectual
                  property rights.

         b.       The provisions and procedures set forth in Section 20. (d)
                  shall apply in the case of any claims of infringement,
                  misappropriation or violation of intellectual property rights
                  for which indemnification will be sought hereunder.

         c.       Without limitation of Section 22 (a), if the sale or use of
                  the software or Services is enjoined, LICENSOR shall, at
                  LICENSOR's option and LICENSOR's expense, either:

                  i.       Procure for RESELLER the right to use the software or
                           Services;

                  ii.      Replace the software or Services with equivalent,
                           noninfringing software or Services;

                  iii.     Modify the software or Services so they become
                           noninfringing, or

                  iv.      If (i), (ii), and (iii) are not practicable, subject
                           to RESELLER's consent, remove the software or
                           Services and refund the purchase price, including
                           transportation, installation, removal and other
                           incidental charges.

23.      PERMITS

         Unless otherwise specifically provided for in this Agreement, LICENSOR
         shall obtain and keep in full force and effect, at its expense, any
         permits, licenses, consents, approvals and authorizations (Permits)
         necessary for the performance and completion of the Services.

24.      ASSIGNMENT

         a.       Except as otherwise provided herein, the rights and
                  obligations of the parties hereunder shall neither be assigned
                  nor delegated without the prior written consent of the other
                  party, which shall not be unreasonably withheld or delayed;
                  provided, however, that any party may assign or delegate their
                  respective rights and obligations hereunder, in whole or in
                  part, to any parent, subsidiary or affiliate of RESELLER that
                  was such a parent, subsidiary or affiliate at the time of
                  execution of this Agreement or is listed in any Exhibit A
                  furnished to LICENSOR from time to time. Such assignment shall
                  not diminish any rights or duties that LICENSOR or RESELLER
                  may have had prior to the effective date of assignment.

         b.       The limitation on assignment does not apply to an assignment
                  confined solely to monies due or to become due under this
                  Agreement, provided RESELLER or LICENSOR is given thirty (30)
                  days prior written notice of such assignment. An assignment of
                  monies shall be void to the extent that it attempts to impose
                  upon RESELLER or LICENSOR obligations to the assignee in
                  addition to the payment of such monies, or to preclude
                  RESELLER or LICENSOR from dealing solely and directly with the
                  other in all matters pertaining hereto, including negotiation
                  of amendments or settlement of amounts due. If RESELLER or
                  LICENSOR makes such an assignment, it is and shall remain
                  responsible for payment hereunder.


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                                       17

<PAGE>   20


25.      TAXES

         RESELLER shall be liable for and shall reimburse LICENSOR for actual
         payments of any Retailers' Excise Taxes, state and local sales and use
         taxes imposed by law upon RESELLER, or any similar taxes or assessments
         as applicable, with respect to transactions under this Agreement. Taxes
         and assessments payable by RESELLER shall be separately stated in
         LICENSOR's invoices and shall not be included in LICENSOR's prices.
         RESELLER shall not be liable for any tax or assessment for which a
         valid exemption certificate acceptable to the applicable state or local
         taxing authorities is furnished by RESELLER to LICENSOR.

26.      RECORDS

         a.       LICENSOR shall maintain complete and accurate records of all
                  amounts billable to and payments made by RESELLER hereunder,
                  in accordance with generally accepted accounting practices.
                  LICENSOR shall retain such records for a period of three (3)
                  years from the date of rendering of Services covered by this
                  Agreement. LICENSOR agrees to provide supporting documentation
                  concerning any disputed amount of invoice to RESELLER within
                  thirty (30) days after RESELLER provides written notification
                  specifying in detail the dispute to LICENSOR. LICENSOR shall
                  retain such records for three (3) years from date of invoice.

         b.       RESELLER's original Subscriber records shall be and remain the
                  property of RESELLER. Either Party shall be entitled, at their
                  own expense and during normal business hours to make copies of
                  such records directly relating to information verifying the
                  number of Subscribers or compliance by RESELLER to the terms
                  of this Agreement.

27.      RIGHT OF ACCESS

         LICENSOR shall permit RESELLER's predesignated representative(s),
         limited to three predefined representatives per state, reasonable
         supervised access to its facilities in connection with performance of
         Services under this Agreement. Both parties agree that no charge shall
         be made for such visits and that RESELLER shall provide a minimum of
         one (1) hour notice prior to arriving at any LICENSOR owned facility
         which is regularly staffed or during any time that a facility is
         involved in a service affecting issue. RESELLER shall provide
         reasonable notice prior to arriving at any LICENSOR owned facility
         which is not staffed and is not experiencing service affecting issues.

28.      TERMINATION

         a.       After the initial three (3) year term of the Agreement,
                  LICENSOR may:

                  i.       terminate RESELLER's right to add additional
                           subscribers upon provision to RESELLER of eighteen
                           (18) months prior written notice. This notice may not
                           be given until completion of the initial three (3)
                           year term. During this eighteen (18) month period
                           RESELLER may add additional Subscribers per the terms
                           of this Agreement. After the eighteenth (18th) month
                           RESELLER may not add additional Subscribers. During
                           this eighteen month period, LICENSOR shall be 


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                                       18

<PAGE>   21



                           bound by all terms of this Agreement, including
                           Exhibit B, and all applicable Liquidated Damages.

                  ii.      however, after the eighteen (18) month notice in
                           Section 28(a)(i), LICENSOR must provide an additional
                           prior written notice of twenty-four (24) months if
                           LICENSOR intends to terminate Service to the existing
                           RESELLER Subscriber base under the terms of this
                           Agreement. During this twenty-four (24) month notice
                           period, LICENSOR may increase prices at the end of
                           each twelve (12) month period in Exhibit C by the
                           greater of [*] or the difference between the Consumer
                           Price Index at the end of the previous twelve (12)
                           month period and the then current Consumer Price
                           Index, as defined within this Agreement, with a
                           minimum of thirty (30) days written notice to
                           RESELLER. LICENSOR has the right but not the
                           obligation to terminate Service to RESELLER's
                           existing Subscriber base after completion of the
                           additional twenty-four (24) month notice period. Both
                           parties are bound by all the terms of this Agreement
                           until such time as all notification requirements and
                           waiting periods are satisfied per this section of the
                           Agreement OR until such time as all RESELLER
                           Subscribers have been migrated from LICENSOR's
                           network, whichever happens sooner. However, if
                           RESELLER's total subscriber base falls below [*}
                           subscribers at any time during this twenty-four (24)
                           month waiting period, then LICENSOR shall not be
                           liable for the Liquidated Damages as assessed in
                           Exhibit B, however, LICENSOR will still be
                           responsible for meeting all other terms of the
                           Agreement

         b.       Either party may terminate this Agreement, effective
                  immediately, without liability for said termination, upon
                  written notice to the other party, if any of the following
                  events occur:

                  i.       The other files a voluntary petition in bankruptcy;

                  ii.      The other is adjudged bankrupt;

                  iii.     A court assumes jurisdiction of the assets of the 
                           other under a federal reorganization act;

                  iv.      A trustee or receiver is appointed by a court for all
                           or a substantial portion of the assets of the other;

                  v.       Other becomes insolvent or suspends its business; or

                  vi.      The other makes an assignment of its assets for the
                           benefit of its creditors, except as required in the
                           ordinary course of business.

         c.       Either party may immediately terminate this Agreement for a
                  material breach or default of any of the terms, conditions or
                  covenants of this Agreement by the other, provided that such
                  termination may be made only following the expiration of a
                  thirty (30) day period during which the other party has failed
                  to cure such breach after having been given written notice of
                  such breach.


PageMart 09/28/98                                                 -CONFIDENTIAL-
                                       19


*  CONFIDENTIAL INFORMATION HAS BEEN DELETED. THE OMITTED MATERIAL HAS BEEN 
   FILED SEPARATELY WITH THE COMMISSION PURSUANT TO AN APPLICATION FOR 
   CONFIDENTIAL TREATMENT.

<PAGE>   22



         d.       In the event of a material breach or default by LICENSOR,
                  provided that LICENSOR has failed to cure the same within
                  thirty (30) days of its receipt of RESELLER's written notice
                  of default, or if said default cannot be cured within a thirty
                  (30) day period, LICENSOR has failed to commence and
                  diligently pursue curing such a default, RESELLER shall be
                  under no obligation to continue to provide LICENSOR's Services
                  to its Subscribers, and RESELLER shall have the right to
                  assign those Subscribers to another paging service.

                  i.       LICENSOR agrees to give RESELLER, at no cost to
                           RESELLER, all Direct Inward Dial numbers associated
                           with all RESELLER's customer accounts/pagers provided
                           that it is both, technically possible to do so, and
                           allowable from a regulatory perspective, with a
                           Glenayre paging terminal. Any numbers and associated
                           ports must be moved to a RESELLER owned terminal.
                           These numbers will not be allowed to reside on a
                           LICENSOR owned paging terminal without the prior
                           written consent of both parties. RESELLER and
                           LICENSOR will each be responsible for any of their
                           own incurred administrative costs associated with
                           such transfers.

                  ii.      RESELLER agrees to proactively transfer no more than
                           [*] of the total subscriber base per month, although
                           the effective rate of transfer will be greater than
                           [*] due to normal churn of RESELLER's subscriber
                           base.

                  iii.     LICENSOR is responsible for costs associated with
                           ensuring technical compliance of all LICENSOR owned
                           systems.

                  iv.      Subsection (d) will not apply after a facilities
                           based direct competitor of LICENSOR gains control of
                           RESELLER's business related to the scope of this
                           Agreement, whether by RESELLER's sale or other
                           transfer of this business or by a third parties
                           purchase or other acquisition of RESELLER. RESELLER's
                           pending transaction with Bell Atlantic is excluded
                           from this subsection (e).

29.      DISPUTE RESOLUTION

         a.       The parties desire to resolve certain disputes, controversies
                  and claims arising out of this Agreement without litigation.
                  Accordingly, except in the case of (i) a dispute, controversy
                  or claim relating to a breach or alleged breach on the part of
                  either party of the provisions of Section 14, CONFIDENTIAL
                  INFORMATION, (ii) a suit, action or proceeding to compel
                  LICENSOR to comply with its obligations to indemnify RESELLER
                  pursuant to this Agreement or (iii) a suit, action or
                  proceeding to compel either party to comply with the dispute
                  resolution procedures set forth in this Section, the parties
                  agree to use the following alternative procedure as their sole
                  remedy with respect to any dispute, controversy or claim
                  arising out of or relating to this Agreement or its breach.
                  The term "Arbitrable Dispute" means any dispute, controversy
                  or claim to be resolved in accordance with the dispute
                  resolution procedure specified in this Section.

         b.       At the written request of a party, each party shall appoint a
                  knowledgeable, responsible representative to meet and
                  negotiate in good faith to resolve any 


PageMart 09/28/98                                                 -CONFIDENTIAL-
                                       20


*  CONFIDENTIAL INFORMATION HAS BEEN DELETED. THE OMITTED MATERIAL HAS BEEN 
   FILED SEPARATELY WITH THE COMMISSION PURSUANT TO AN APPLICATION FOR 
   CONFIDENTIAL TREATMENT.

<PAGE>   23


                  Arbitrable Dispute arising under this Agreement. The parties
                  intend that these negotiations be conducted by nonlawyer,
                  business representatives. The discussions shall be left to the
                  discretion of the representatives. Upon agreement, the
                  representatives may utilize other alternative dispute
                  resolution procedures such as mediation to assist in the
                  negotiations. Discussions and correspondence among the
                  representatives for purposes of these negotiations shall be
                  treated as confidential information developed for purposes of
                  settlement, shall be exempt from discovery and production, and
                  shall not be admissible in the arbitration described below or
                  in any lawsuit without the concurrence of all parties.
                  Documents identified in or provided with such communications,
                  which are not prepared for purposes of the negotiations, are
                  not so exempted and may, if otherwise admissible, be admitted
                  in evidence in the arbitration or lawsuit.

         c.       If the negotiations do not resolve the Arbitrable Dispute
                  within sixty (60) days of the initial written request, the
                  Arbitrable Dispute shall be submitted to binding arbitration
                  by a single arbitrator pursuant to the Commercial Arbitration
                  Rules of the American Arbitration Association. A party may
                  demand such arbitration in accordance with the procedures set
                  out in those rules. Discovery shall be controlled by the
                  arbitrator and shall be permitted to the extent set out in
                  this Section. Each party may submit in writing to a party, and
                  that party shall so respond, to a maximum of any combination
                  of thirty-five (35) (none of which may have subparts) of the
                  following: interrogatories, demands to produce documents and
                  requests for admission. Each party is also entitled to take
                  the oral deposition of one (1) individual of another party.
                  Additional discovery may be permitted upon mutual agreement of
                  the parties. The arbitration hearing shall be commenced within
                  sixty (60) days of the demand for arbitration and the
                  arbitration shall be held in Dallas, Texas. The arbitrator
                  shall control the scheduling so as to process the matter
                  expeditiously. The parties may submit written briefs. The
                  arbitrator shall rule on the Arbitrable Dispute by issuing a
                  written opinion within thirty (30) days after the close of
                  hearings. The arbitrator shall have no power or authority to
                  make awards or issue orders of any kind except as permitted by
                  this Agreement and substantive law, and in no event shall the
                  arbitrator have the authority to make any award that provides
                  for punitive or exemplary damages. The arbitrator's decision
                  shall follow the plain meaning of this Agreement and the
                  relevant documents. The times specified in this Section may be
                  extended upon mutual agreement of the parties or by the
                  arbitrator upon a showing of good cause. Judgment upon the
                  award rendered by the arbitrator may be entered in any court
                  having jurisdiction.

         d.       Each party shall bear its own cost of these procedures. A
                  party seeking discovery shall reimburse the responding party
                  the cost of production of documents (to include search time
                  and reproduction time costs). The parties shall equally share
                  the fees of the arbitration and the arbitrator.

30.      NOTICES

         Any written notice either party may give the other concerning the
         subject matter of this Agreement shall be in writing and given or made
         by means of telegram, facsimile transmission, certified or registered
         mail, express mail or other overnight delivery service, or hand
         delivery, proper postage or other charges paid and addressed or
         directed to the respective parties as follows:


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                                       21

<PAGE>   24



                  To LICENSOR:        At LICENSOR's address shown on the first 
                                      page of this Agreement.

                  To RESELLER:        GTE Supply
                                      700 Hidden Ridge (HQW03N42)
                                      Irving, Texas  75038
                                      Attention: Contract Management

         Written notices for change in ownership, change in name of firm, or
         change in mailing address must be given by LICENSOR by mailing to
         RESELLER within thirty (30) days of such change. A change in ownership
         shall be defined as any one person, entity, or legal entity acquiring
         more than ten percent (10%) ownership of LICENSOR's company and or
         publicly traded stock. Notices for change in ownership must include the
         names of all new owners or officers, registered agent for service of
         process and state of incorporation or organization.

31.      NONWAIVER

         Either party's failure to enforce any of the provisions of this
         Agreement and/or any purchase order, or to exercise any option
         hereunder, shall in no way be construed as a waiver of such provisions,
         rights, or options, or in any way be deemed to affect the validity of
         this Agreement or any purchase order.

32.      SEVERABILITY

         Should any part of this Agreement for any reason be declared invalid by
         order of any court or regulatory agency, such order shall not affect
         the validity of any remaining portion, which shall remain in force and
         effect as if this Agreement had been executed with the invalid portion
         eliminated, and it is hereby declared the intention of the parties that
         they would have executed the remaining portion of this Agreement
         without including therein any such part or portion which may, for any
         reason, be hereafter declared invalid.

33.      SECTION HEADINGS

         The headings of the sections herein are inserted for convenience only
         and are not intended to affect the meaning or interpretation of this
         Agreement.

34.      SURVIVAL OF OBLIGATIONS

         The respective obligations of LICENSOR and RESELLER under this
         Agreement which by their nature would continue beyond the termination,
         cancellation or expiration hereof, shall survive termination,
         cancellation or expiration hereof.

35.      CHOICE OF LAW

         The construction, interpretation and performance of this Agreement
         shall be 

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<PAGE>   25

         governed by and construed in accordance with the domestic laws of the
         State of Texas.

36.      ENTIRE AGREEMENT

         This Agreement and the exhibits hereto constitute the entire agreement
         between LICENSOR and RESELLER. No modifications shall be made to this
         Agreement unless in writing and signed by appropriate representatives
         of the parties.

37.      SIGNATURES

IN WITNESS WHEREOF, the parties hereto have executed this Agreement through
their authorized corporate representatives.


GTE Communication Systems            PageMart Wireless, Inc.
Corporation

By: /s/ M. R. REDMOND                By: /s/ N. ROSS BUCKENHAM
   ---------------------                -----------------------------
Name:   M. R. Redmond                Name:   N. Ross Buckenham
     -------------------                  ---------------------------
Title: AVP-Contract Mgt              Title:  President
      ------------------                   --------------------------
Date:  9/29/98                       Date:   9/28/98
     -------------------                  ---------------------------



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                                       23

<PAGE>   26





                                    EXHIBIT A

                             GTE AFFILIATED ENTITIES


GENERAL ADMINISTRATION
GTE Corporation
     GTE Finance Corporation
     GTE Investment Management Corporation
     GTE Realty Corporation
         GTE Realty Corporation of Connecticut
         GTER Incorporated
         GTE-TCCA, Inc.
     GTE Reinsurance Company Limited (Vermont)
         GTE Life Insurance Company Limited (Bermuda)
     GTE Reinsurance Management Limited (Bermuda)
     GTE Service Corporation
     GTE Shareholder Services Incorporated
     GTE VisNet Incorporated

GOVERNMENT SYSTEMS
Contel Federal Systems, Inc.
     GTE Government Systems Corporation
         GTE CyberTrust Solutions Incorporated
         GTE Federal Services Corporation
         GTE Government Systems Overseas Corporation
         GTE Overseas Systems and Services Corporation
         Telecom Systems Incorporated
         Contel Page International Holdings, Inc.
              Contel Page International, Inc.
         Page Europa, S.p.A.
              MTX Italia

     GTE Telecom Incorporated
     GTE Telecom International Incorporated
     GTE Telecom International Systems Corporation
         GTE Telecom Saudi Arabia LTD

INFORMATION SERVICES
GTE Information Services Incorporated
     General Telephone Directory Company C. por A.
     GTE Communications Corporation
     GTE Data Services GmbH
     GTE Directories (Belgium) Limited
     GTE Directories (B) SDN.BHD (Brunei)
     GTE Directories Corporation
         Associated Directory Services-WC, Company
         GTE Directories Distribution Corporation
         GTE Directories Sales Corporation
              GTEX Corporation
     GTE Directories (HK) Limited (Hong Kong)
     GTE Directorios - Republica Dominicana, C. por  A.
     GTE Government Information Services Incorporated
     GTE Information Services (UK) Limited (England)
         U S West Polska Sp. Z o.o.
     GTE New Media Services Incorporated
     GTE Telecommunications Services Incorporated
     GTE Yellow Pages Publishing Hungary Kft

INTERNETWORKING OPERATIONS
GTE Internetworking Incorporated
GTE Intelligent Network Services Incorporated
BBN Corporation
     BBN International Corporation
     BBN International Sales Corporation
     BBN Securities Corporation
     BBN U.K. Limited
     Bolt Beranek and Newman Corporation
     Realtech Corporation

TELEPHONE OPERATING COMPANIES
GTE Alaska Incorporated
GTE Arkansas Incorporated
GTE California Incorporated
     Contel Advanced Systems, Inc.
GTE Florida Incorporated
     GTE Florida Business Connections Corporation
     GTE Funding Incorporated
GTE Hawaiian Telephone Company Incorporated
     GTE Hawaiian Tel Insurance Company Incorporated
     GTE Hawaiian Tel International Incorporated
     The Micronesian Telecommunications Corporation
         GTE Pacifica Incorporated
GTE Midwest Incorporated
GTE North Incorporated
GTE Northwest Incorporated
     GTE West Coast Incorporated
GTE South Incorporated
GTE Southwest Incorporated
Contel of Minnesota, Inc. d/b/a GTE Minnesota
Contel of the South, Inc. d/b/a GTE Systems of the South
Contel Service Corporation

GTE Anglo Holding Company Incorporated
     La Compagnie de Telephone Anglo-Canadienne/Anglo-
     Canadian Telephone Company
         BC TELECOM Inc.
              Aerotech Specialities Ltd.
              BC TEL
                 Canadian Telephones and Supplies Ltd.
                 ISM Information Systems Management
                   (B.C.) Corporation
              BC TEL Mobility Cellular Inc.
              BC TEL Mobile Ltd.
              BC TEL Properties Inc.

PageMart (9/28/98)                                                -CONFIDENTIAL-
                                       A-1

<PAGE>   27



                                    EXHIBIT A

                             GTE AFFILIATED ENTITIES

              BC TEL Risk Management Inc.
              BC TEL Systems Support Inc.
              Microtel International Inc.
              SRI Strategic Resources Inc.

         Telecom Leasing Canada (TLC) Limited

         Quebec-Telephone
              QuebecTel Communications Inc.
              QuebecTel Mobilite Inc.
              Quebec Tel International Inc.

GTE Customer Networks, Inc.

GTE Data Services Incorporated
     GTE Data Services International Incorporated

GTE Holdings (Canada) Limited
     Compania Dominicana de Telefonos, C. por A.
     (Codetel)
         Quality Telecommunications, C. por A.

GTE International Telephone Incorporated
     Informatica y Telecommunicaciones, C. por A.
     (Dominican Republic)

GTE International Telecommunications Incorporated
     GTE do Brasil Limitada
     GTE Mexico, L.L.C.
     GTE PCS International Incorporated
     GTE Venezuela Incorporated
         VenWorld Telecom, C.A. (Venezuela)
              Compania Anonima Nacional Telefonos de
              Venezuela (CANTV)
     Prontocel S.A. (Brazil)

GTE Investments Incorporated

GTE London Limited (England)

GTE Main Street Incorporated

GTE Media Ventures Incorporated

ContelVision, Inc.

GTE Enterprise Initiatives Incorporated

GTE Vantage Incorporated


WIRELESS PRODUCTS AND SERVICES
GTE Airfone Incorporated
         GTE Airfone of Canada Incorporated
         GTE Railfone Incorporated
         Mexfone, S.A. de C.V.

GTE Wireless Incorporated
     GTE Mobile Communications Service Corporation
     GTE Mobile Communications International    Incorporated
     GTE Mobilnet of Asheville Incorporated
     GTE Mobilnet of Danville Incorporated
     GTE Mobilnet of Eastern North Carolina Incorporated
         GTE Mobilnet of Jacksonville Incorporated
              GTE Mobilnet of Jacksonville II Incorporated
         GTE Mobilnet of Wilmington Incorporated
              GTE Mobilnet of Wilmington II Incorporated
     GTE Mobilnet of Fayetteville Incorporated
     GTE Mobilnet of Florence, South Carolina Incorporated
     GTE Mobilnet of North Carolina Incorporated
     GTE Mobilnet of Raleigh Incorporated
     GTE Mobilnet of South Carolina Incorporated
     GTE Mobilnet of the Southeast Incorporated

     GTE Cellular Communications Corporation
     GTE Mobilnet of Cleveland Incorporated
     GTE Mobilnet Sales Corp.
     GTE Mobilnet Service Corp.
         GTE Mobilnet of Austin Incorporated
         GTE Wireless of Houston Incorporated
     GTE Wireless of the Midwest Incorporated
     GTE Wireless of the Pacific Incorporated
         GTE Mobilnet of Clatsop Incorporated

     Contel Cellular International, Inc.
     GTE Mobilnet Holding Incorporated
         GTE Mobilnet of Alabama Incorporated
              GTE Mobilnet of Florence, Alabama
                Incorporated
         GTE Mobilnet of Chattanooga Incorporated
         GTE Mobilnet of Chattanooga II Incorporated
         GTE Mobilnet of Clarksville Incorporated
         GTE Mobilnet of Gadsden Incorporated
         GTE Mobilnet of Knoxville Incorporated
         GTE Mobilnet of Memphis Incorporated
         GTE Mobilnet of Memphis II Incorporated
         GTE Mobilnet of Nashville Incorporated
         GTE Mobilnet of Tennessee Incorporated
     GTE Mobilnet of Central California Incorporated
         Pinnacles Cellular, Inc.
     GTE Mobilnet of Huntsville Incorporated
     GTE Mobilnet of Illinois Funding Incorporated

PageMart (9/28/98)                                                -CONFIDENTIAL-
                                       A-2

<PAGE>   28


                                   EXHIBIT A
                            GTE AFFILIATED ENTITIES

     GTE Mobilnet of San Diego Incorporated
     GTE Mobilnet of the Southwest Incorporated
     GTE Wireless of the South Incorporated


OTHER OPERATIONS
GTE China Incorporated
     GTE International Telecommunications Services LLC
         GITS Branch LLC
         GTE Holdings Mexico, S. de R.L. de C.V.
              GTE Data Services-Mexico, S.A. de C.V.
              GTEDS Services-Mexico, S.A. de C.V.
         GTE Supply-Mexico, S.A. de C.V.

GTE Communications Services Incorporated

GTE Leasing Corporation
     GTE Leasing Acceptance Corporation
     Kalama Grain Terminal, Inc.

GTE Products of Connecticut Corporation
     GTE Communication Systems Corporation (GTE Supply)

     GTE International Incorporated
         GTE Far East (Services) Limited
         GTE Overseas Corporation

     GTE Laboratories Incorporated

     GTE Operations Support Incorporated
         GTE Operations do Brasil Comercial Ltda.
         West Indies Telephone Company

     Televac, Inc.

GTE Transfer Corporation




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                                       A-3

<PAGE>   29




                                    EXHIBIT B
                             Service Level Agreement


LICENSOR agrees to maintain the service levels described herein. LICENSOR's
service level agreement applies only to the infrastructure managed and
maintained by LICENSOR. LICENSOR is not responsible for service levels for the
infrastructure maintained by RESELLER (i.e. the Hawaii network infrastructure
and all RESELLER paging terminals).

LICENSOR will provide service to RESELLER in three different manners: Full
RESELLER Paging Services, Quasi-RESELLER Paging Services, and Transmission Only
Paging Services.

         Under Full RESELLER Paging Services the RESELLER will procure customers
         which will be activated on one of LICENSOR's paging terminals and in
         LICENSOR's billing system via PRIME, Vantive, WinFast, ActFast,
         Dial-Now, or other LICENSOR provided activation systems. LICENSOR will
         provide the pager number and all in-bound calling circuits. When a
         valid customer receives a page the in-bound call is accepted by
         LICENSOR (at the terminal), the customer is validated in the terminal,
         and the page is transmitted to the transmitters in the correct Coverage
         zone via satellite simulcast. The transmitters then send the page out
         via one of LICENSOR's frequencies (that frequency which matches the
         receiver in that specific customer's pager). Multiple sub-services are
         to be provided by LICENSOR to RESELLER under this service as defined
         below.

         Under Quasi-RESELLER Paging Services the RESELLER will procure
         customers which will be activated on a RESELLER paging terminal, one of
         LICENSOR's paging terminals, and LICENSOR's billing system via PRIME,
         Vantive, WinFast, ActFast, Dial-Now, or other LICENSOR provided
         activation systems. When a valid customer receives a page the in-bound
         call is accepted by RESELLER (at the terminal), the customer is
         validated in the terminal, and the page is transmitted to a LICENSOR
         terminal via TNPP. The data is directed by LICENSOR's terminal to the
         transmitters in the correct Coverage zone via satellite simulcast. The
         transmitters then send the page out via one of LICENSOR's frequencies
         (that frequency which matches the receiver in that specific customer's
         pager). Multiple sub-services are to be provided by LICENSOR to
         RESELLER under this service as defined below.

         Under Transmission Only Paging Services the RESELLER will procure
         customers which will be activated on a RESELLER paging terminal via a
         RESELLER provided activation system. Billing will be based on the
         amount of data that passes through the LICENSOR's system as defined in
         the pricing section of this contract. When a valid customer receives a
         page the in-bound call is accepted by RESELLER (at the RESELLER owned
         terminal), the customer is validated in the terminal, and the page is
         transmitted to a LICENSOR terminal via TNPP. The data is directed by
         LICENSOR's terminal to the transmitters in the correct Coverage zone
         via satellite simulcast. The transmitters then send the page out via
         one of LICENSOR's frequencies (that frequency which matches the
         receiver in that specific customer's pager). Multiple sub-services are
         to be provided by LICENSOR to RESELLER under this service as defined
         below.


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                                       B-1

<PAGE>   30


[*]


GTE Communication Systems                    PageMart Wireless, Inc.


By: /s/ M. R. REDMOND                        By: /s/ N. ROSS BUCKENHAM
   --------------------------                   --------------------------  
                                                                            
Name:   M. R. Redmond                        Name:   N. Ross Buckenham
     ------------------------                     ------------------------  
                                                                            
Title:  AVP-Contract Mgt                     Title:  President
      -----------------------                      -----------------------  
                                                                            
Date:   9/29/98                              Date:   9/28/98                  
     ------------------------                     ------------------------  




PageMart (09/28/98)                                               -CONFIDENTIAL-



*  CONFIDENTIAL INFORMATION HAS BEEN DELETED. THE OMITTED MATERIAL HAS BEEN 
   FILED SEPARATELY WITH THE COMMISSION PURSUANT TO AN APPLICATION FOR 
   CONFIDENTIAL TREATMENT.

<PAGE>   31


                                    EXHIBIT C
                                     Pricing


Listed below are the three pricing options available to RESELLER:


1.       PRIME PROVISIONED SUBSCRIBER MESSAGING SERVICES

         Services delivered to RESELLER customers utilizing a RESELLER or
         LICENSOR owned paging terminal for which LICENSOR's administrative
         system (PRIME) is used to provision the subscribers and collect call
         counts.

2.       TNPP NON-PROVISIONED SUBSCRIBER MESSAGING SERVICES

         Services delivered to RESELLER customers for which RESELLER provides
         all provisioning services and does not utilize LICENSOR's provisioning
         systems nor paging terminals managed or maintained by LICENSOR. Traffic
         rated according to this pricing model must be delivered at RESELLER's
         cost to a LICENSOR network gateway (RTS Router) for direct distribution
         to the satellite uplink without passing through one of LICENSOR's
         paging terminals.

3.       TNPP NON-PROVISIONED MACHINE MESSAGING SERVICES

         Services delivered to RESELLER customers for which RESELLER provides
         all provisioning services and does not utilize LICENSOR's provisioning
         systems nor paging terminals managed or maintained by LICENSOR. Traffic
         rated according to this pricing model must be delivered at RESELLER's
         cost to a LICENSOR network gateway (RTS Router) for direct distribution
         to the satellite uplink without passing through one of LICENSOR's
         paging terminals. Each message shall consist of no more than three (3)
         characters.






PageMart (9/28/98)                                                -CONFIDENTIAL-
                                       C-1

<PAGE>   32

                                    EXHIBIT C
                 PRIME PROVISIONED SUBSCRIBER MESSAGING SERVICES
                              ALPHANUMERIC PRICING


<TABLE>
<CAPTION>
                                PER MO, PER UNIT         TEXT NETWORK         NUMERIC NET.         US 800 /          US 800 / 888
COVERAGE                       FLEX NETWORK RATE        OVERCALL LEVEL       OVERCALL LEVEL       888 CHARGE        OVERCALL LEVEL
- --------                       -----------------        --------------       --------------       ----------        --------------
<S>                            <C>                      <C>                   <C>                 <C>               <C>    

Local - Tier I                        *                      *                   *                   *                   *   

Local - Tier II                       *                      *                   *                   *                   *   

Local Tier III                        *                      *                   *                   *                   *   

Text Roam
    US only (1)                       *              counts towards local coverage listed above

Text Roam
    International (2)                 *              counts towards local coverage listed above

Statewide                             *                      *                   *                   *                   *   

Region                                *                      *                   *                   *                   *   

Dual Region                           *                      *                   *                   *                   *   

Norpac                                *                      *                   *                   *                   *   

SF or LA plus
     Las Vegas                        *                      *                   *                   *                   *   

California State
     plus Las Vegas                   *                      *                   *                   *                   *   

Nationwide
    US 48 States                      *                      *                   *                   *                   *   
    US Extended (1)                   *                      *                   *                   *                   *   

International (2)                     N/A            See International Text Roam above.
</TABLE>


**Alphanumeric message allotment to include 100 characters per message.
 - LOCAL AND STATEWIDE ONLY, AGGREGATED AT LISTED SERVICE LEVELS. NO OTHER
   SERVICES ARE AGGREGATED.
 - GTE will offer industry standard overcall thresholds and rates in order to
   create financial opportunities for GTE or penalties for abusers of the
   network.
 - GTE user's usage profile does not change significantly from the current or
   the aggregation rules will be reviewed.
 - If a GTE subscriber originates more than 500 text messages in one month, GTE
   and PageMart will discuss the validity of the application and remove that
   customer from aggregation on the basis that at such a high level, over 16
   text messages per day, PageMart is not fairly compensated.
 - International Roaming requires equal level of service of U.S. service on
   929.6625 Mhz frequency.
 - All rates are per month unless otherwise noted.
 - FLEX Service only; "( )" denotes pocsag rate -- not applicable for new
   subscribers, but will apply to RESELLER's current pocsag inventory
 - Tier I (LA / San Diego), Tier II (Hawaii), Tier III (All areas not Tier I or
   Tier II).
 (1) 48 States, Alaska/Hawaii, Puerto Rico/Virgin Islands, Bahamas
 (2) 48 States, Canada, Alaska/Hawaii, Puerto Rico/Virgin Islands, Bahamas,
     Mexico, Central America



PageMart (9/28/98)                                                -CONFIDENTIAL-
                                       C-2


*  CONFIDENTIAL INFORMATION HAS BEEN DELETED. THE OMITTED MATERIAL HAS BEEN 
   FILED SEPARATELY WITH THE COMMISSION PURSUANT TO AN APPLICATION FOR 
   CONFIDENTIAL TREATMENT.

<PAGE>   33

                                    EXHIBIT C
                 PRIME PROVISIONED SUBSCRIBER MESSAGING SERVICES
                                 NUMERIC PRICING


<TABLE>
<CAPTION>
                                     Per Mo, Per Unit            Network            US 800/888                800/888
Coverage                            Flex Network Rate        Overcall Level           Charge              Overcall Level
- --------                            -----------------        --------------           ------              --------------
<S>                                <C>                      <C>                    <C>                   <C>    
Local                                        *                      *                   *                        *

Local LA/SD                                  *                      *                   *                        *

Numeric Roam
      US only (1)                            *            counts towards local coverage listed above

Numeric Roam
      International (2)                      *            counts towards local coverage listed above

Statewide                                    *                      *                   *                        *

Region                                       *                      *                   *                        *

Dual Region                                  *                      *                   *                        *

Norpac                                       *                      *                   *                        *

Seaboard Region                              *                      *                   *                        *

SF or LA plus                                                                                        
     Las Vegas                               *                      *                   *                        *

California State
     Plus Las Vegas                          *                      *                   *                        *

Nationwide
      US 48 States                           *                      *                   *                        *
      US Extended (1)                        *                      *                   *                        *

International (2)                          N/A            See International Numeric Roam above.

</TABLE>

**Price includes Local DID.
 - NUMERIC NETWORK OVERCALLS ARE AGGREGATED WITHIN THREE CATEGORIES: (1) LOCAL,
   ROAM, AND STATEWIDE; (2) REGIONAL; AND (3) NATIONWIDE AND EXTENDED 
   NATIONWIDE. AGGREGATE BILLING DOES NOT INCLUDE 800/888 SERVICE. OVERCALL 
   CHARGES ARE ASSESSED WHEN AGGREGATED THRESHOLD IS CROSSED.
 - GTE will offer industry standard overcall thresholds and rates in order to
   create financial opportunities for GTE or penalties for abusers of the
   network.
 - GTE user's usage profile does not change significantly from the current or
   the aggregation rules will be reviewed.
 - International Roaming requires equal level of service of U.S. service on
   929.6625 Mhz frequency.
 - All rates are per month unless otherwise noted.
 - FLEX Service only; "( )" denotes pocsag rate -- not applicable for new
   subscribers, but will apply to RESELLER's current pocsag inventory.
 (1) 48 States, Alaska/Hawaii, Puerto Rico/Virgin Islands, Bahamas
 (2) 48 States, Canada, Alaska/Hawaii, Puerto Rico/Virgin Islands, Bahamas,
     Mexico, Central America




PageMart (9/28/98)                                                -CONFIDENTIAL-
                                       C-3


*  CONFIDENTIAL INFORMATION HAS BEEN DELETED. THE OMITTED MATERIALS HAVE BEEN 
   FILED SEPARATELY WITH THE COMMISSION PURSUANT TO AN APPLICATION FOR 
   CONFIDENTIAL TREATMENT.

<PAGE>   34

                                    EXHIBIT C
               TNPP Non-Provisioned Subscriber Messaging Services
                                     Pricing


Pricing the same as Exhibit B Prime Provisioned Messaging Services except:

o        TNPP price does not include Local DID.

o        Numeric TNPP rates are discounted [*] from published PRIME rates and
         are for FLEX units only.

o        Alphanumeric TNPP rates are discounted [*] from published PRIME rates
         and are for FLEX units only.

o        LICENSOR will provide a monthly list for all customers using Roaming
         service.

o        [*]

o        TNPP circuits and licensing fees, to allow for pager provisionment,
         will be the financial responsibility of RESELLER.

o        Numeric overcalls [*] at per character based on 20 characters per
         numeric message, i.e., [*] per numeric overcall.


PageMart (9/28/98)                                                -CONFIDENTIAL-
                                       C-4


*  CONFIDENTIAL INFORMATION HAS BEEN DELETED. THE OMITTED MATERIAL HAS BEEN 
   FILED SEPARATELY WITH THE COMMISSION PURSUANT TO AN APPLICATION FOR 
   CONFIDENTIAL TREATMENT.

<PAGE>   35



                                    EXHIBIT C
                 TNPP Non-Provisioned Machine Messaging Services
                                     Pricing



o        To be discussed: Most Favored Nation clause will apply








PageMart (9/28/98)                                                -CONFIDENTIAL-
                                       C-5



<PAGE>   36




                                    EXHIBIT D
                              Authorized Equipment


PRODUCT NAME

Motorola Pronto - Flx
Motorola Bravo - Flx
Motorola Jazz - Flx
Motorola Express Extra - Flx
Motorola Express Ultra - Flx
Motorola Renegade - Flx*

Motorola Wordline Flx
Motorola Advisor Gold Flx
Motorola Advisor Elite Flx

Phillips Cobalt Flx
Phillips Myna Flx




*        Only units currently in RESELLER'S inventory (approximately 10,000) may
         be placed in service under LICENSOR'S Paging System

PageMart 09/28/98                                                 -CONFIDENTIAL-
                                       D-1

<PAGE>   37




                                    EXHIBIT E

                  RESELLER National Accounts Service Commitment


                  [*]





PageMart 09/28/98                                                 -CONFIDENTIAL-
                                       E-1



*  CONFIDENTIAL INFORMATION HAS BEEN DELETED. THE OMITTED MATERIAL HAS BEEN 
   FILED SEPARATELY WITH THE COMMISSION PURSUANT TO AN APPLICATION FOR 
   CONFIDENTIAL TREATMENT.

<PAGE>   38



                                    EXHIBIT F

                               Technical Standards

      (To be added within thirty (30) days after executing this Agreement)






PageMart 09/28/98                                                 -CONFIDENTIAL-
                                       F-1


<PAGE>   39

[PAGEMART LOGO]


PAGEMART STANDARDS AND TEST PROCEDURES FOR WIRELESS MESSAGING DEVICES

The following section will outline the general lab procedures utilized by
PageMart to evaluate and test the subscriber units submitted for acceptance.

1    Inspection of unit for manufacturing quality, finish and ruggedness.

2    Analysis of ease of unit operation (message recall, etc.) in conformance
     with supplied operating procedures.

3    Analysis of programming ease and feature availability.

4    Analysis of technical and programming manuals.

The following section will outline the testing of pager sensitivity, and other
specifications as deemed necessary, in a Model CC105EXX Crawford TEM Cell.

1    Locate "BEST POSITION" through trial and error placement in the Crawford
     cell or based on information supplied by the manufacturer.

2    By reiterative adjustment of signal level from the test signal generator
     (HP8648C with FLEX encoding option) the point at which 80% of the page
     sequences sent are decoded will be determined.

3    To arrive at a 90% signaling reliability, add 1.5 dB to the value measured
     above. THIS VALUE REPRESENTS OUR MEASURED SENSITIVITY FOR THE PAGER.

Our current benchmark level is -102dBm. Our expectation is for the sensitivity
of a pager in this environment and by this method be no worse than -95dBm.

The following section will outline the testing of pagers for high signal level
intermodulation rejection in the TEM cell:

1    Combine three HP8648 signal generators w/ encoders using a three-way
     splitter and feed the signal into the TEM cell.

2    Adjust sig. Gen. #1 and #2 (the unwanted signals) 929.6125MHz and
     929.5625MHz respectively, which create a third order hit on 929.66250 (the
     wanted signal frequency).

3    Set-up sig. Gen. #3 (the wanted signal) with pager appropriate modulation
     at 6400/4 Phase D on frequency 929.66250.

4    Adjust amplitude of all signal generators to -30dBm inside the cell
     compensating for any losses in the set-up. (PageMart set-up has a 20dB
     measured loss, therefore signal generators are set to -10dBm.)

5    The wanted signal is then decremented to failure and recorded.

6    THE DELTA OF THE WANTED TO THE UNWANTED SIGNALS REPRESENTS THE LEVEL OF
     INTERMODULATION REJECTION FOR THE PAGER AT -30dBm.

Our current benchmark level is 45dB of IMR @ -30dBm. Our expectation of any
device in this environment should be greater than 40dB of IMR @-30dBm.

Note*** If testing of pager high-level IM is accomplished by following
TIA/EIA-603 section 2.1.9 intermodulation Rejection, the following exceptions
apply:

1    In paragraph 2.1.9.2.c, increases the level of the "wanted" signal by 70
     dB. E.g., if reference sensitivity as measured in the TEM cell is -100
     dBm, the new applied level is -30 dBm.

2    Replace any reference to a SINAD measurement with the 80% paging
     reliability reference point.


                                                                              1


<PAGE>   40



At this point, RF Engineering will produce a brief report with subjective
evaluation factors and the results of sensitivity and I/M tests. This will be
submitted to management. If a decision is made to proceed, additional testing
will be done as follows.

Field testing will be done at worst-case signaling rates in the following
environments:

1.   The usual simulcast system locations in city, suburban and rural locations.

2.   Weak signal, usually rural, locations.

3.   In areas of known high-level IM.

4.   In other locations or cities as deemed necessary.


Field testing is accomplished in the following manner.

1.   Request the PageMart Communications Center to initiate numeric and/or
     alphanumeric sequential test pages through the appropriate paging terminal.

2.   Place all pagers under test (the five new units plus known units for
     reference) clipped to a copier paper box top or equivalent (each pager
     should be separated by as much distance as possible).

Setup the PageMart RF Engineering Grayson PageTracker with associated Notebook
computer (P5-75 or better) to measure received signal strength indication (RSSI)
and bit error rate (BER) on at least two receivers.

1.   One receiver will utilize an external magnetic mount quarter-wave whip
     antenna mounted on the test vehicle roof.

2.   The second receiver will utilize a two-way "rubber-ducky" type mobile radio
     antenna.

3.   Drive routes and locations that are previously defined and mapped in
     relation to the desired environments.

4.   Perform continuous testing by receiving periodic pages on specified drive
     routes at normal speeds.

5.   Perform testing at fixed locations by receiving groups of ten or more
     sequential pages. (Rotate pager position at least every 25 pages)

6.   Produce Graphical Information System (GIS) plots of BER and RSSI.

7.   Compare reliability data in relation to GIS BER and RSSI:

Within published coverage areas paging reliability should exceed 95%. In weak
signal locations performance of the units under test should be comparable to the
reference pager (+/- 5%). Other test locations should show paging reliability
statistics on the units under test comparable to the reference pager in terms of
pager reliability (+/- 5%).

PageMart RF Engineering will produce a summary report including data as required
with recommendations for management to decide on the purchase of production
quantities of the pager under test.



                                                                               2

<PAGE>   1
                                                                   EXHIBIT 11.1
 
                             PAGEMART WIRELESS, INC.
                    COMPUTATION OF PER SHARE EARNINGS (LOSS)

<TABLE>
<CAPTION>
                                                     THREE MONTHS ENDED DECEMBER 31, 1998
                                                   ------------------------------------------
                                                      NUMBER        PERCENT        EQUIVALENT
                                                     OF SHARES     OUTSTANDING       SHARES
                                                   -----------     -----------     ----------
<S>                                                <C>             <C>             <C>
COMMON STOCK
   From Founders' Stock                              2,300,000          100.00%     2,300,000
   Stock Options Exercised                           1,060,225           99.77%     1,057,752
   Preferred Stock Converted to Common Stock        15,310,943          100.00%    15,310,943
   1994 Common Stock Offerings                      11,242,857          100.00%    11,242,857
   1995 Common Stock Offerings                       4,323,874          100.00%     4,323,874
   1996 Common Stock Offering                        6,000,000          100.00%     6,000,000
   Employee Stock Purchase Plan Shares Issued          110,943           81.90%        90,862
   Warrants Exercised                                   49,450          100.00%        49,450
                                                   -----------                   ------------
                                                    40,398,292                     40,375,738

WEIGHTED AVERAGE SHARES OUTSTANDING                                                40,375,738

NET LOSS                                                                         $(14,831,000)

NET LOSS PER SHARE                                                               $      (0.37)
                                                                                 ============
</TABLE>

<PAGE>   1
  
                                                                    EXHIBIT 11.2

                             PAGEMART WIRELESS, INC.
                    COMPUTATION OF PER SHARE EARNINGS (LOSS)



<TABLE>
<CAPTION>
                                                     THREE MONTHS ENDED DECEMBER 31, 1997
                                                   ------------------------------------------
                                                      NUMBER        PERCENT        EQUIVALENT
                                                     OF SHARES     OUTSTANDING       SHARES
                                                   -----------     -----------     ----------
<S>                                                <C>             <C>             <C>
COMMON STOCK
   From Founders' Stock                              2,300,000          100.00%     2,300,000
   Stock Options Exercised                             731,072           98.10%       717,194
   Preferred Stock Converted to Common Stock        15,310,943          100.00%    15,310,943
   1994 Common Stock Offerings                      11,242,857          100.00%    11,242,857
   1995 Common Stock Offerings                       4,323,874          100.00%     4,323,874
   1996 Common Stock Offering                        6,000,000          100.00%     6,000,000
   Employee Stock Purchase Plan Shares Issued           75,891           77.24%        58,621
   1997 Warrants Exercised                              48,300          100.00%        48,300
                                                  ------------                   ------------
                                                    40,032,937                     40,001,789

WEIGHTED AVERAGE SHARES OUTSTANDING                                                40,001,789

NET LOSS                                                                         $(10,126,000)


NET LOSS PER SHARE                                                               $      (0.25)
                                                                                 ============
</TABLE>

<PAGE>   1
                                                                    EXHIBIT 11.3

                             PAGEMART WIRELESS, INC.
                   COMPUTATION OF PER SHARE EARNINGS (LOSS)

<TABLE>
<CAPTION>
                                                     THREE MONTHS ENDED DECEMBER 31, 1996
                                                   ------------------------------------------
                                                      NUMBER        PERCENT        EQUIVALENT
                                                     OF SHARES     OUTSTANDING       SHARES
                                                   -----------     -----------     ----------
<S>                                                <C>             <C>             <C>
COMMON STOCK
   From Founders' Stock                              2,300,000          100.00%     2,300,000
   Stock Options Exercised                             595,983           93.47%       557,058
   Preferred Stock Converted to Common Stock        15,310,943          100.00%    15,310,943
   1994 Common Stock Offerings                      11,242,857          100.00%    11,242,857
   1995 Common Stock Offerings                       4,323,874          100.00%     4,323,874
   1996 Common Stock Offering                        6,000,000          100.00%     6,000,000
   Employee Stock Purchase Plan Shares Issued           31,275            1.09%           340
                                                    ----------                   ------------
                                                    39,804,932                     39,735,072

WEIGHTED AVERAGE SHARES OUTSTANDING                                                39,735,072

NET LOSS                                                                         $(12,865,000)

NET LOSS PER SHARE                                                               $      (0.32)
                                                                                 ============
</TABLE>


<PAGE>   1
                                                                    EXHIBIT 11.4

                             PAGEMART WIRELESS, INC.
                    COMPUTATION OF PER SHARE EARNINGS (LOSS)

<TABLE>
<CAPTION>
                                                            YEAR ENDED DECEMBER 31, 1998
                                                     -------------------------------------------
                                                      NUMBER          PERCENT        EQUIVALENT
                                                     OF SHARES      OUTSTANDING         SHARES
                                                    ----------      -----------     ------------
<S>                                                  <C>                <C>            <C>      
COMMON STOCK
   From Founders' Stock                              2,300,000          100.00%        2,300,000
   Stock Options Exercised                           1,060,225           88.35%          936,674
   Preferred Stock Converted to Common Stock        15,310,943          100.00%       15,310,943
   1994 Common Stock Offerings                      11,242,857          100.00%       11,242,857
   1995 Common Stock Offerings                       4,323,874          100.00%        4,323,874
   1996 Common Stock Offering                        6,000,000          100.00%        6,000,000
   Employee Stock Purchase Plan Shares Issued          110,943           75.19%           83,423
   1997 Warrants Exercised                              49,450           98.26%           48,590
                                                   -----------                      ------------
                                                    40,398,292                        40,246,361

WEIGHTED AVERAGE SHARES OUTSTANDING                                                   40,246,361

LOSS BEFORE EXTRAORDINARY ITEMS                                                      (41,710,000)
EXTRAORDINARY ITEMS                                                                  (17,606,000)
                                                                                    ------------
NET LOSS                                                                            $(59,316,000)

LOSS BEFORE EXTRAORDINARY ITEMS                                                            (1.03)
EXTRAORDINARY ITEMS                                                                        (0.44)
                                                                                    ------------
NET LOSS PER SHARE                                                                  $      (1.47)
                                                                                    ============
</TABLE>

<PAGE>   1
                                                                    EXHIBIT 11.5
 
                             PAGEMART WIRELESS, INC.
                    COMPUTATION OF PER SHARE EARNINGS (LOSS)

<TABLE>
<CAPTION>
                                                           YEAR ENDED DECEMBER 31, 1997
                                                    -------------------------------------------
                                                      NUMBER         PERCENT        EQUIVALENT
                                                     OF SHARES     OUTSTANDING         SHARES
                                                    ----------     -----------     ------------
<S>                                                  <C>                <C>           <C>      
COMMON STOCK
   From Founders' Stock                              2,300,000          100.00%       2,300,000
   Stock Options Exercised                             731,072           90.01%         658,012
   Preferred Stock Converted to Common Stock        15,310,943          100.00%      15,310,943
   1994 Common Stock Offerings                      11,242,857          100.00%      11,242,857
   1995 Common Stock Offerings                       4,323,874          100.00%       4,323,874
   1996 Common Stock Offering                        6,000,000          100.00%       6,000,000
   Employee Stock Purchase Plan Shares Issued           75,891           59.41%          45,087
   1997 Warrants Exercised                              48,300           84.33%          40,732
                                                    ----------                     ------------
                                                    40,032,937                       39,921,505

WEIGHTED AVERAGE SHARES OUTSTANDING                                                  39,921,505

NET LOSS                                                                           $(43,887,000)


NET LOSS PER SHARE                                                                 $      (1.10)
                                                                                   ============
</TABLE>

<PAGE>   1
                                                                   EXHIBIT 11.6

                             PAGEMART WIRELESS, INC.
                   COMPUTATION OF PER SHARE EARNINGS (LOSS)

<TABLE>
<CAPTION>
                                                                          YTD ENDED JUNE 13, 1996
                                                                 ----------------------------------------
                                                                  NUMBER         PERCENT       EQUIVALENT
                                                                 OF SHARES     OUTSTANDING       SHARES
                                                                 ----------    -----------     ----------
<S>                                                               <C>              <C>          <C>      
COMMON STOCK
   From Founders' Stock                                           2,300,000        100.00%      2,300,000
   Stock Options Exercised                                          537,414         99.47%        534,581
   Preferred Stock Converted to Common Stock                     15,310,943        100.00%     15,310,943
   1994 Common Stock Offerings                                   11,242,857        100.00%     11,242,857
   1995 Common Stock Offerings                                    4,323,874        100.00%      4,323,874

                                                                 ----------                    ----------
                                                                 33,715,088                    33,712,255

Adjustments to outstanding shares:
   Add Exercises for 6/13/95 - 6/13/96 at 100%                                      2,833
   Add Shares Issuable upon Exchange of Shares in
       PageMart Canada Holding                                                    714,286
   Add Weighted Average Grants Issued 6/13/95 -
       6/13/96                                                                    261,869
                                                                                  -------
Total adjustments to outstanding shares:                                          978,988

                                                                                               ----------
Weighted Average Shares Outstanding (as adjusted) at 6/13/96                                   34,691,243

6/13/96 Shares Weighted at 165 days                                                            15,639,495
</TABLE>

<TABLE>
<CAPTION>
                                                                     JUNE 14 THROUGH DECEMBER 31, 1996
                                                                 ----------------------------------------
                                                                  NUMBER         PERCENT      EQUIVALENT
                                                                 OF SHARES     OUTSTANDING       SHARES
                                                                 ----------    -----------    -----------
<S>                                                               <C>              <C>          <C>      
COMMON STOCK
   From Founders' Stock                                           2,300,000        100.00%      2,300,000
   Stock Options Exercised                                          595,983         93.82%        559,154
   Preferred Stock Converted to Common Stock                     15,310,943        100.00%     15,310,943
   1994 Common Stock Offerings                                   11,242,857        100.00%     11,242,857
   1995 Common Stock Offerings                                    4,323,874        100.00%      4,323,874
   1996 Common Stock Offering                                     6,000,000        100.00%      6,000,000
   Employee Stock Purchase Plan Shares Issued                        31,275          0.50%            156
                                                                 ----------                  ------------
                                                                 39,804,932                    39,736,984

Weighted Average Shares Outstanding at 12/31/96                                                39,736,984

12/31/96 Shares Weighted at 201 days                                                           21,822,770

WEIGHTED AVERAGE OF SHARES OUTSTANDING at 6/13/96 and 12/31/96                                 37,462,264

NET LOSS                                                                                     $(48,598,000)

NET LOSS PER SHARE                                                                           $      (1.30)
                                                                                             ============
</TABLE>

<PAGE>   1


                                                                    EXHIBIT 12.1


                             PAGEMART WIRELESS, INC.
                COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES
                                 (IN THOUSANDS)

<TABLE>
<CAPTION>
                                                                                                                   
                                          YEAR ENDED     YEAR ENDED     YEAR ENDED     YEAR ENDED     YEAR ENDED   
                                         DECEMBER 31,   DECEMBER 31,   DECEMBER 31,   DECEMBER 31,   DECEMBER 31,  
                                            1993           1994           1995           1996           1997       
                                         ------------   ------------   ------------   ------------   ------------  
<S>                                       <C>            <C>            <C>            <C>            <C>          
Earnings:
  Net loss .........................      $(31,121)      $(45,813)      $(53,113)      $(48,598)      $(43,887)    
  Add:  Amount of
     previously capitalized
     interest amortized ............            --             --             --             --             --     
  Add: Fixed charges ...............         6,538         12,933         30,720         35,041         38,499     
  Adjusted earnings ................       (24,583)       (32,880)       (22,393)       (13,557)        (5,388)    

Fixed charges:
  Interest on
     indebtedness ..................         5,785         11,209         28,383         32,368         36,672     
  Amortization of debt
     issuance costs ................           159            800          1,052          2,143            844     
  Other interest
     expense .......................           594            924          1,285            530            983     
  Fixed charges ....................         6,538         12,933         30,720         35,041         38,499     


Deficiency of
  earnings available to
  cover fixed charges ..............      $(31,121)      $(45,813)      $(53,113)      $(48,598)      $(43,887)    
                                          ========       ========       ========       ========       ========     

Earnings to fixed charges ratio ....            --             --             --             --             --     


<CAPTION>
                                        THREE MONTHS
                                            ENDED        YEAR ENDED
                                         DECEMBER 31,   DECEMBER 31,
                                          1998 (1)        1998 (1)
                                         ------------   ------------
<S>                                       <C>            <C>      
Earnings:
  Net loss .........................      $(14,831)      $(59,316)
  Add:  Amount of
     previously capitalized
     interest amortized ............           196            252
  Add: Fixed charges ...............        11,441         43,798
  Adjusted earnings ................        (3,194)       (15,266)

Fixed charges:
  Interest on
     indebtedness ..................        13,840         52,645
  Amortization of debt
     issuance costs ................           307          1,172
  Other interest
     expense .......................           506          1,428
  Fixed charges ....................        14,653         55,245


Deficiency of
  earnings available to
  cover fixed charges ..............      $(17,847)      $(70,511)
                                          ========       ========

Earnings to fixed charges ratio ....            --             --

</TABLE>


(1)  The fixed charge adjustment to earnings excludes $3.2 million and $11.4
     million of capitalized interest for the three months and year ended 
     December 31, 1998.


<PAGE>   1

                                                                    EXHIBIT 21.1

PAGEMART WIRELESS, INC.

Subsidiaries:                                     Jurisdiction of Incorporation

PageMart, Inc.                                             
(merged into PageMart Wireless, Inc.                        Delaware          
on January 28, 1998)             
PageMart PCS, Inc.                                          Delaware
PageMart II, Inc.                                           Delaware          
PageMart Operations, Inc.                                   Delaware
PageMart California, Inc.                                   Delaware
PageMart Operations, Inc. of Virginia                       Delaware
PageMart International, Inc.                                Delaware
Telephone North, Inc.                                       Delaware
PageMart Asia Holdings, Ltd.                                Cayman Islands
PageMart Latino America, S.A. de C.V.                       Mexico
PageMart de Mexico, S.A. de C.V.                            Mexico
PageMart de Columbia Limitada                               Columbia

<PAGE>   1


                                                                    EXHIBIT 23.1

                   CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS

As independent public accountants, we hereby consent to the incorporation of our
report included in this Form 10-K, into the Company's previously filed
Registration Statements on Form S-8 File Nos. 333-98116, 333-09083, and
333-09087, on Form S-3 File Nos. 33-91142 and 333-48971.


                                              /s/ ARTHUR ANDERSEN LLP

Dallas, Texas, 
March 26, 1999

<TABLE> <S> <C>

<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
COMPANY'S DECEMBER 31, 1998 FINANCIAL STATEMENTS AND IS QUALIFIED IN ITS
ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-START>                             JAN-01-1998
<PERIOD-END>                               DEC-31-1998
<CASH>                                          17,476
<SECURITIES>                                     1,000
<RECEIVABLES>                                   40,884
<ALLOWANCES>                                     2,580
<INVENTORY>                                      6,747
<CURRENT-ASSETS>                                74,537
<PP&E>                                         390,505
<DEPRECIATION>                                 116,326
<TOTAL-ASSETS>                                 494,055
<CURRENT-LIABILITIES>                          120,750
<BONDS>                                        462,079
                                0
                                          0
<COMMON>                                             4
<OTHER-SE>                                    (90,026)
<TOTAL-LIABILITY-AND-EQUITY>                   494,055
<SALES>                                         56,838
<TOTAL-REVENUES>                               311,652
<CGS>                                           69,150
<TOTAL-COSTS>                                  125,734
<OTHER-EXPENSES>                                43,420
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                              43,798
<INCOME-PRETAX>                               (41,710)
<INCOME-TAX>                                         0
<INCOME-CONTINUING>                           (41,710)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                               (17,606)
<CHANGES>                                            0
<NET-INCOME>                                  (59,316)
<EPS-PRIMARY>                                   (1.47)
<EPS-DILUTED>                                   (1.47)
        

</TABLE>


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