IXC COMMUNICATIONS INC
10-K, 1999-03-31
TELEPHONE COMMUNICATIONS (NO RADIOTELEPHONE)
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                                 UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                            ------------------------
 
                                   FORM 10-K
                            ------------------------
(MARK ONE)
 
     [X]  ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF
        THE SECURITIES EXCHANGE ACT OF 1934
 
                  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
 
         FOR THE TRANSITION PERIOD FROM ____________ TO ____________ .
 
                         COMMISSION FILE NUMBER 0-20803
 
                            IXC COMMUNICATIONS, INC.
             (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)
 
<TABLE>
<S>                                            <C>
                   DELAWARE                                      75-2644120
(STATE OR OTHER JURISDICTION OF INCORPORATION       (I.R.S. EMPLOYER IDENTIFICATION NO.)
               OR ORGANIZATION)
</TABLE>
 
         1122 CAPITAL OF TEXAS HIGHWAY SOUTH, AUSTIN, TEXAS 78746-6426
                    (ADDRESS OF PRINCIPAL EXECUTIVE OFFICES)
 
      (REGISTRANT'S TELEPHONE NUMBER, INCLUDING AREA CODE): (512) 328-1112
 
        SECURITIES REGISTERED PURSUANT TO SECTION 12(b) OF THE ACT: NONE
 
           SECURITIES REGISTERED PURSUANT TO SECTION 12(g) OF THE ACT
 
                     COMMON STOCK, PAR VALUE $.01 PER SHARE
    SERIES A JUNIOR PARTICIPATING PREFERRED STOCK, PAR VALUE $.01 PER SHARE
                                (TITLE OF CLASS)
 
     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 such
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. [ ]
 
     The aggregate market value of the Common Stock of the Registrant held by
non-affiliates of the Registrant on March 19, 1999, based on the closing price
of the Common Stock on the NASDAQ National Market on such date, was
$1,711,187,165.
 
     The number of shares of Common Stock, $.01 par value, outstanding (the only
class of common stock of the Company outstanding) was 36,602,934 on March 19,
1999.
 
                      DOCUMENTS INCORPORATED BY REFERENCE
 
     Portions of the Registrant's Proxy Statement to be filed with the
Securities and Exchange Commission within 120 days of December 31, 1998, in
connection with the Annual Meeting of Stockholders are incorporated by reference
into Part III hereof.
 
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                            IXC COMMUNICATIONS, INC.
 
                                   FORM 10-K
                  FOR THE FISCAL YEAR ENDED DECEMBER 31, 1998
 
                               TABLE OF CONTENTS
 
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<S>       <C>                                                           <C>
                                   PART I
Item 1.   Business....................................................    4
Item 2.   Properties..................................................   29
Item 3.   Legal Proceedings...........................................   30
Item 4.   Submission of Matters to a Vote of Security Holders.........   30
 
                                  PART II
Item 5.   Market for Registrant's Common Equity and Related
          Stockholder Matters.........................................   31
Item 6.   Selected Financial Data.....................................   32
Item 7.   Management's Discussion and Analysis of Financial Condition
          and Results of Operations...................................   32
Item 7A.  Quantitative and Qualitative Disclosures About Market
          Risk........................................................   43
Item 8.   Financial Statements and Supplementary Data.................   43
Item 9.   Changes in and Disagreements with Accountants on Accounting
          and Financial Disclosure....................................   43
 
                                  PART III
Item 10.  Directors and Executive Officers of the Registrant..........   44
Item 11.  Executive Compensation......................................   44
Item 12.  Security Ownership of Certain Beneficial Owners and
          Management..................................................   44
Item 13.  Certain Relationships and Related Transactions..............   44
 
                                  PART IV
Item 14.  Exhibits, Financial Statement Schedules, and Reports on Form
          8-K.........................................................   44
Signatures............................................................   50
Glossary..............................................................   51
Financial Statements..................................................  F-1
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                           FORWARD-LOOKING STATEMENTS
 
     We have included "forward-looking statements" throughout this document.
These statements describe our attempt to predict future events. We use the words
"believe," "anticipate," "expect," and similar expressions to identify
forward-looking statements. You should be aware that these forward-looking
statements are subject to a number of risks, assumptions, and uncertainties,
such as:
 
     - Risks associated with our capital requirements and existing debt,
       including the need to obtain additional capital to refinance indebtedness
       and provide working capital for operations;
 
     - Risks associated with increasing competition in the telecommunications
       industry, including industry over-capacity and declining prices;
 
     - Risks associated with our ability to successfully integrate our recent
       acquisitions;
 
     - Changes in laws and regulations that govern the telecommunications
       industry;
 
     - Risks related to continuing our network expansion without delays
       including the need to obtain permits and rights-of-way;
 
     - Risks associated with our ability to continue our strategy of growth
       through acquisitions; and
 
     - Risks related to our ability to prepare our information technology
       systems for Year 2000.
 
     This list is only an example of some of the risks that may affect our
forward-looking statements. If any of these risks or uncertainties materialize
(or if they fail to materialize), or if the underlying assumptions are
incorrect, then our results may differ materially from those we have projected
in the forward-looking statements. We have no obligation to revise these
statements to reflect future events or circumstances.
 
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ITEM 1. BUSINESS
 
OVERVIEW
 
     We are a leading provider of data and voice telecommunications transmission
services. We own and operate an advanced coast-to-coast digital communications
network that includes 9,300 fiber route miles of fiber optic transmission
facilities. Substantial additions to our network are under construction, and we
project our network to include approximately 16,400 fiber route miles by the end
of 1999. Our facilities also include 9 long distance switches and 26 ATM-Frame
Relay switches, which we are using to capitalize on the growing demand for
Internet and electronic data transfer services. Through a combination of our
facilities and the facilities of other carriers, we originate and terminate long
distance traffic in all 50 U.S. states, and terminate long distance traffic in
over 200 foreign countries. Revenue has grown rapidly, from $154.7 million in
1995 to $668.6 million in 1998.
 
     Our customers include AT&T, MCIWorldCom, Sprint, PSINet, Inc., Cable &
Wireless, Excel Communications, Inc., Qwest, Frontier and over 500 other long
distance companies, wireless companies, cable television providers, Internet
Service Providers ("ISPs") and government agencies. We also have over 113,000
retail customers, most of which are small and medium size businesses.
 
     We have three principal segments of business. First, we lease dedicated
circuits, or private lines, to other companies for the transmission of voice and
data. Second, we provide long distance switched services by transmitting long
distance traffic through our switches. Finally, we are an Internet services and
backbone provider that also provides ATM-Frame Relay-based switched data
services.
 
     Private Line. Our private line customers include ISPs, long distance
carriers and cable television companies. Our customers may transmit voice, data,
or Internet traffic over our network. Our pricing for private line sales
contracts varies with both the amount of capacity, or bandwidth, and the length
of the leased circuit. We provide capacity in varying increments, including the
ability to provision circuits with multiple OC-192 capacity. Private line sales
contracts are typically either service agreements that provide for recurring
monthly payments or indefeasible right to use ("IRU") agreements, in which a
large payment is received by us at the beginning of the service term. Generally,
month-to-month service contracts contain substantial "take or pay" commitments
that require the customer to make the payment regardless of whether full
capacity was utilized. We provide private line circuit contracts to over 275
customers, including AT&T, MCIWorldCom, Sprint, PSINet, Level 3 Communications,
Cable & Wireless, Qwest Communications, and Frontier.
 
     Long Distance Switched. Our long distance switched services are processed
through digital switches and carried over our network or over other long
distance circuits and transmission facilities that we lease. We sell these
services on a per-call basis, charging by minutes of use, with payment due
monthly after services are rendered. Our focus in this business is end users,
however, we also service long distance resellers (both switchless resellers and
switched resellers that lack switches in geographic regions). The end users, our
retail customer base, consist primarily of small and medium size businesses. We
are expanding our sales to retail customers through internal growth after the
acquisition of Telecom One in 1997, Eclipse Telecommunications, Inc. (formerly
named Network Long Distance, Inc.) in 1998, and the planned acquisition of
Coastal Telecom Limited Company in 1999. Additionally, we formed a joint venture
with Unidial Communications to sell communications services using our network
through a full-time, national direct sales force. We may continue acquiring
additional resellers that provide significant network or product synergies. We
sell long distance switched services to over 113,000 end users and over 245 long
distance resellers.
 
     Data/Internet Services. Our network includes 26 ATM-Frame Relay switches
and was built with SONET technology and broadband capabilities. It supports
advanced, capacity-intensive products that use comparatively large amounts of
bandwidth, such as ATM-Frame Relay, multimedia, and Internet-related
applications. We market a full line of data/Internet products and services. We
market these products and services to ISP's, resellers, CLECs and end users.
Included in our suite of products are back office support functions including
branded order entry and provisioning. To simplify Internet connectivity for
customers requiring dedicated services, we include a comprehensive line of
customer-premise equipment in our offerings.
 
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In order to accelerate our ability to provide these offerings to our customers,
we acquired four companies in the Internet technology business, as follows:
 
     - We acquired Network Evolutions, Inc. ("NEI"), a company that provides
       data consulting services and network design solutions. Beginning in 1999
       NEI will also become a Cisco Systems, Inc. certified training center;
 
     - We acquired The Data Place, Inc. ("Data Place"), which supplies companies
       with complete network systems integration solutions. This acquisition
       gave us additional expertise in the systems integrator channel for
       selling broadband services.
 
     - We acquired ntr.net Corporation ("NTR"), an ISP located in Louisville,
       Kentucky. NTR offers custom back office support to wholesale customers as
       well as multiple Internet dial-up services. Through this subsidiary, we
       offer a fully operational back office solution, including private label
       capability for supporting wholesale accounts. This affords us a wholesale
       dedicated and dial-up product for both our wholesale and retail customer
       bases.
 
     - We acquired the assets of SMARTNAP, a subsidiary of SMART Technologies in
       Austin, Texas. SMARTNAP is an ISP that provides aggregated Internet
       access, collocation of Web servers and routers and end-site Internet
       managed connectivity. These operations gave us an immediate entry into
       Web hosting and dedicated Internet connectivity markets.
 
     In addition to these acquisitions, we consummated an agreement with PSINet,
Inc. in which we provided PSINet an IRU in 10,000 miles of OC-48 capacity on our
network in exchange for 10.2 million shares of PSINet's common stock. We also
acquired 34% of Applied Theory Communications, Inc. This investment gave us
access to critical Internet expertise. Applied Theory services the New York
state research and education community.
 
     In December 1998, we activated the first coast-to-coast next generation
Internet Protocol OC-48 backbone network to carry both commercial and research
community traffic. Named Gemini2000, this network carries traffic at speeds of
2.5 gigabits per second. Gemini2000 will offer a full range of voice, data,
Internet and integrated communications services to our customers.
 
     Fiber Sales. We have sold IRUs in excess fiber to various other
communications companies including MCIWorldCom, LCI International Management
Services, Inc. (now a subsidiary of Qwest), and The Williams Companies. We
received cash proceeds of approximately $128.5 million in cash and $105.2
million in notes receivable from these sales in 1998. Revenue from these
transactions amounted to only $8.9 million in 1998 because we recognize revenue
from sales of fiber over the term of these agreements, which range from 10 to 25
years. In addition to fiber sales, we have swapped excess fiber with other
carriers. In 1997, we acquired rights to fiber in routes to be constructed from
Los Angeles to San Francisco, Las Vegas to Portland, Washington, D.C. to
Houston, and New York City to Washington, D.C. in such exchanges.
 
     International Joint Ventures. We formed Storm Communications, Ltd., a joint
venture with Telenor AS, the Norwegian national telephone company, to provide
telecommunication services to carriers and resellers in Europe. We also
indirectly hold a minority interest in Grupo Marca-Tel S.A. de C.V. ("Marca-
Tel"), a Mexican telecommunications provider.
 
     Our principal executive offices are located at 1122 Capital of Texas
Highway South, Austin, Texas, 78746. Our telephone number is (512) 328-1112.
 
INDUSTRY
 
  Development and Regulation
 
     The development of the long distance telecommunications industry was
strongly influenced by a 1982 court decree requiring the divestiture by AT&T of
its seven RBOCs and dividing the country into approximately 200 LATAs. The seven
RBOCs were allowed to provide local telephone service, local access service to
long distance carriers and intra-LATA long distance service (service within a
LATA), but were
 
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prohibited from providing inter-LATA service (service between LATAs). The right
to provide inter-LATA service was given to AT&T and the other interexchange
carriers, including the LECs that are not RBOCs. The FCC requires all
interexchange carriers to allow the resale of their inter-LATA services to long
distance carriers, and the 1982 court decree substantially eliminated different
access arrangements as distinguishing features among long distance carriers.
These and other legislative and judicial factors have helped smaller long
distance carriers emerge as alternatives to AT&T, MCIWorldcom and Sprint for
long distance services.
 
     The Telecommunications Act of 1996 ("Telecom Act"), among other things,
allows the RBOCs and others such as electric utilities and cable television
companies to enter the long distance business. The Telecom Act will
substantially alter the way in which the telecommunications industry is
regulated. Such changes are, however, difficult to predict accurately, because
FCC proceedings and appellate review of the numerous administrative regulations
adopted to implement the Telecom Act, including universal service and access
charge reform, are still ongoing. Entry of the RBOCs or other entities such as
electric utilities, cable television companies or foreign companies into the
long distance business may result in reduced market shares for existing long
distance companies and additional pricing pressure on us and other long distance
providers. See "-- Risk Factors -- Competition," "-- Risk Factors -- Recent
Legislation and Regulatory Uncertainty" and "-- Regulation."
 
Market and Competition
 
     General. The telecommunications market is highly competitive. Competition
for both resellers and end-user customers is based upon pricing, advertising,
customer service, network quality and value-added services. Industry observers
estimate that over 600 smaller companies have emerged to compete in the long
distance business. See "-- Risk Factors -- Competition."
 
     Private Line Services. Long distance companies may be categorized as
facilities-based carriers (those who own transmission facilities) and
non-facilities-based carriers (those who do not own transmission facilities).
Sellers of private line services are generally facilities-based carriers that
own long distance transmission facilities, such as fiber optic cable or digital
microwave equipment. The first-tier and some second-tier long distance companies
are facilities-based carriers offering private line services nationwide.
Facilities-based carriers in the third tier of the market generally offer
private line services only in a limited geographic area. Customers using private
line services include: (1) facilities-based carriers that require long distance
transmission capacity where they have geographic gaps in their facilities, need
additional capacity or require geographically diverse routing; (2)
non-facilities-based carriers requiring long distance transmission capacity to
carry their customers' long distance traffic, and (3) ISP companies who desire
capacity to provide a more robust Internet atmosphere for their customers. Our
competitors in the private line business include AT&T, MCIWorldCom, Sprint,
Qwest, Frontier, Williams, Level 3, and certain regional carriers. Important
competitive factors in the private line business are quality, reliability,
price, customer service, network location and availability. See "-- Private Line
Services."
 
     Long Distance Switched Services. Long distance companies may be
characterized as switched or switchless carriers. A switch is a device that
opens and closes circuits or selects the paths or circuits to transmit
information. Switching interconnects circuits to form a transmission path
between users. Sellers of long distance switched services are generally switched
carriers that own one or more switches that direct telecommunications traffic.
Facilities-based carriers are generally switched carriers. Our customers for
wholesale switched services include both switched and switchless resellers. Our
retail customers are generally small to medium size businesses seeking
inexpensive, reliable long distance voice and data transmission capability.
Competitors in the long distance switched services business include AT&T,
MCIWorldCom, Sprint, Qwest, Frontier, as switched carriers. Important
competitive factors in the long distance switched services business are price,
customer service (particularly with respect to speed in delivery of computer
billing records and set-up of new end users with the LECs), ability of our
network to complete calls with a minimum of network-caused busy signals, scope
of services offered, reliability and transmission quality.
 
     Data/Internet Services. This business consists of assisting customers in
using the Internet for internal purposes and for advertising and selling their
products over the Internet. Also known as "e-commerce", the
 
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sale of products and services over the Internet is growing rapidly. The ability
of businesses to participate in e-commerce depends upon the technological
expertise available to the businesses, either internally or from others. As
e-commerce is a recent phenomenon, few small or medium size businesses have
sufficient internal technological resources. As a result, these companies look
to consultants for Internet, networking and web-hosting assistance. Service
providers in the industry range from small consulting firms to large
telecommunications industry leaders such as MCIWorldCom. We provide service to
resellers in the wholesale market and to end users in the retail market.
 
Call Routing
 
     An inter-LATA long distance telephone call begins with the caller's LEC
transmitting the call by means of its local switched network to a point of
connection with an interexchange carrier. The interexchange carrier, through its
switches and long distance transmission network, transmits the call to the
called party's LEC, which then completes the call over its local facilities. For
each long distance call, the originating LEC charges an access fee. The
interexchange carrier also charges a fee for its transmission of the call, a
portion of which consists of a fee charged by the LEC used to deliver the call.
Under the Telecom Act, state proceedings may in certain instances determine LEC
access charge rates. Further, ongoing access charge proceedings at the federal
level may affect the access charges long distance carriers pay to LECs. It is
uncertain at this time what effect such proceedings may have on such rates.
 
Network Transmission Medium
 
     Long distance voice traffic generally is transmitted through digital
microwave or fiber optic systems. Long distance data traffic is generally
transmitted through fiber optic systems or satellites.
 
     Fiber Optic Systems. Fiber optic systems use laser-generated light to
transmit data and voice in digital format through fine strands of glass. Fiber
optic systems are characterized by large circuit capacity, good sound quality,
resistance to external signal interference and direct interface with digital
switching equipment. A pair of modern fiber optic strands, using current
technology, is capable of carrying eight or more OC-192s. Because fiber optic
signals disperse over distance, they must be regenerated at sites located along
the fiber optic cable (on older fiber optic systems the interval is 20 to 25
miles; on newer systems that utilize modern fiber optic cable and splicing
methods, such as is used in the expansion of our network, it is approximately 50
to 75 miles).
 
     Microwave Systems. Although limited in capacity in comparison with fiber
optic systems (generally, no more than 28 DS-3s can be transmitted by microwave
between 2 antennae), digital microwave systems offer an effective and reliable
means of transmitting voice and data signals over intermediate and longer
distances. Microwaves are very high frequency radio waves that can be reflected,
focused and beamed in a line-of-sight transmission path. Because of their
electro-physical properties, microwaves can be used to transmit signals through
the air, with relatively little power. To create a communications circuit,
microwave signals are transmitted through a focusing antenna, received by an
antenna at the next station in the network, then amplified and retransmitted.
Because microwaves weaken as they travel through the air, this transmission
process must be repeated at repeater stations, which consist of radio equipment,
antennae and back-up power sources, located on average every 25 miles along the
transmission network.
 
BUSINESS STRATEGY
 
     Our objective is to become the preferred provider of integrated
network-based information delivery solutions, utilizing our high-capacity,
state-of-the-art nation-wide fiber network. To that end, we plan to:
 
     - focus on high value integrated data and voice services to end users;
 
     - expand our network by constructing, swapping and building new fiber
       routes and reduce operating costs by replacing capacity currently leased
       from other carriers with our own network capacity;
 
     - integrate our Internet-related services, our voice services, and our
       private line services to accommodate complete business solutions;
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     - pursue additional revenue opportunities in our private line business by
       leveraging our network's capacity and focusing on large capacity
       requirements of customers;
 
     - capitalize on the rapid growth in demand for data transmission services,
       by aggressively marketing data services;
 
     - expand retail channel revenue through Telecom One, Eclipse, and Coastal,
       and by making selective acquisitions of other strategically positioned
       resellers; and
 
     - utilize international alliances to obtain additional international
       traffic on our network and provide global connectivity to our customers.
 
     In order to implement this strategy we intend to pursue the following:
 
     Expand the Data and Internet Business. The SONET technology and broadband
capabilities in our network provide a platform to support advanced,
capacity-intensive products such as ATM-Frame Relay, multimedia, and
Internet-related applications. We have equipped our network with 26 data
switches and other equipment that has allowed us to be in the ATM-Frame Relay
transmission business. In 1998, we acquired four Internet-related businesses to
improve our offerings in this area. We acquired NEI, which provides Internet
consulting; Data Place, which supplies businesses with complete network systems
integration solutions; NTR, which supplies back office support to wholesale
customers and Internet dial-up services to end users; and the assets of
SMARTNAP, which provides aggregated Internet access, collocation of Web servers
and routers, and end-site managed connectivity.
 
     Increase Private Line Revenue. We will continue to sell high capacity (e.g.
OC-3, OC-12, OC-48, OC-192) long- term private line agreements. These
transactions will consist of both IRU capacity agreements and monthly leases of
capacity. We expect our current success of supporting major ISP's will expand in
the future as e-commerce increases.
 
     We designed our network to traverse routes geographically diverse from
those of other facilities-based carriers. In recent years, companies such as
AT&T, MCIWorldCom and Sprint have used our network's routes to help protect
their networks in case of a service outage. Such companies prefer routes
separated geographically from their own networks to increase the possibility
that the alternative route will be functional in case of a natural disaster. We
believe our network expansion greatly increases the attractiveness of our
network as an alternative routing backup to the major carriers.
 
     Improve the Long Distance Switched Services Business. We have established
ourself as an alternative provider of long distance switched services with
nationwide origination and domestic and international termination capability. We
plan to expand the focus of our retail products and services, including services
designed to enhance our customers' ability to pursue business and manage their
business over the Internet. We plan to market these integrated data and voice
services to the end users through our retail marketing organization, which
currently consists of Eclipse, Telecom One, and will also include Coastal if and
when the purchase of that company is completed. We have approximately 113,500
retail long distance customers.
 
     Reduce Operating Costs. As we expand our network, capacity leased from
other carriers may be transferred to our network. Revenue growth may result in
increased future off-net usage if revenue opportunities include geographic areas
that our network currently does not reach or if capacity on our network is
unavailable.
 
     Enter Into Cost-Saving Arrangements. We have built excess fiber in our
network that can leased or sold to other carriers or exchanged for fibers or
capacity on other carriers' networks. We will seek to obtain the right to
install our fibers in new routes being constructed by other carriers along our
planned network expansion routes in exchange for sharing network construction
costs, allowing the other carrier to use excess fiber along certain of our
existing routes, or allowing the other carrier to add its fiber to existing
certain segments of our network. We have already completed several fiber
exchanges with other carriers that have reduced the per-route-mile cost of
construction.
 
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THE NETWORK
 
  Facilities
 
     Our network includes approximately 9,300 fiber route miles. Our owned
facilities are supplemented with approximately 283,000 DS-3-equivalent miles of
capacity obtained from other carriers. Of such capacity, we lease over 244,000
DS-3 miles. Approximately 39,000 DS-3 miles of such capacity has been obtained
through long-term capacity-exchange agreements with other companies. These
exchange agreements are possible because of the placement of our network in
locations where other facilities-based carriers require additional capacity and
the comparatively large expense to other carriers of constructing new fiber
optic facilities. Such exchange agreements increase the scope of our network
through the addition of the exchanged capacity and reduce our cash expenditures
for off-net facilities.
 
     Our network includes nine digital long distance voice/data switches in
major cities. Each of the switches is directly connected over on-net or off-net
private line circuits to: (1) at least two other switching centers; (2) certain
of our hubs (central locations where telecommunications traffic is collected for
transport and distribution); and (3) certain switching centers or central
switching facilities of LECs (central offices). The hubs are connected
(generally by off-net circuits) to LEC central office switches, which in turn
are connected to end-user telephone lines. The switches use common channel
signaling (SS7), which reduces connect time delays. The network also includes 26
ATM-Frame Relay data switches located in major cities. Our switched operations
are supplemented by agreements with MCIWorldCom. Under these agreements
MCIWorldCom supplies switched capacity on a per-minute basis, automatically
handling calls routed through LEC central offices not connected to our hubs or
switches and handling calls which exceed the capacity of our switched network.
The capacity of our switches may be expanded with processor upgrades, and
additional memory and ports.
 
     Our fiber optic routes are constructed with fiber capable of supporting
bi-directional SONET rings for enhanced network reliability. As each new route
is completed and placed into service, it is equipped with at least one OC-192 in
order to provide initial transmission capacity. We also equip certain of our
routes with additional OC-48/OC-192 capacity in order to meet customer demand.
 
  Network Reliability
 
     Our network offers a reliable means of transmitting large volumes of voice
and data signals. Monitoring is conducted from the national operations center in
Austin on a 24-hour, seven-day per week basis. This system alerts technicians to
situations that could affect customer transmission and generally allows us to
take remedial actions before customer service is affected. In addition, at
December 31, 1998, approximately 157 operations personnel were employed along
our network to perform preventative maintenance as well as repair functions on
our private line network. Operations personnel conduct annual system performance
testing and make periodic unannounced visits to terminal sites to evaluate
technician performance. At December 31, 1998, a staff of 31 technicians was
employed to provide maintenance and other technical support services for
switched long distance services.
 
  Network Expansion
 
     The expansion of our network delivers the following significant strategic
and financial benefits:
 
     - substantial savings by moving traffic onto our network that is currently
       carried on circuits that are leased from other carriers;
 
     - high-capacity new routes and substantially increased capacity on certain
       existing routes, allowing increased revenue by leasing additional
       circuits to customers, including high-capacity circuits such as OC-3s,
       OC-12s and OC-48s;
 
     - lower underlying transmission and network operating costs;
 
     - addition of sufficient capacity to support increasing demand from
       Internet and ATM-Frame Relay; and
 
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     - reduced capital costs through sales and exchanges of excess fiber which
       is included in our network expansion specifically for that purpose;
 
     We are adding thousands of additional fiber route miles to increase the
geographic scope and capacity of our network. Our network connects our switches
with high-capacity private line circuits, utilizing advanced fiber optic
technology capable of efficiently transmitting capacity-intensive services, such
as Internet, Intranet, multimedia applications, and ATM-Frame Relay. The routes
of our network expansion have generally been geographically diverse from the
existing fiber networks of AT&T, MCIWorldCom and Sprint.
 
     Construction. Our network expansion is planned to cover, to the greatest
extent practicable, routes where one or more of the following factors are
present: (1) customer demand indicates a need for high-capacity fiber network on
the route; (2) the route is attractive as a complement to the routes of other
carriers, allowing the lease of capacity on the route to other carriers to
exchange a portion of capacity on the route for capacity in routes from other
carriers; or (3) the capacity will replace capacity currently leased from other
carriers.
 
     Cost. The principal components of network expansion cost include: (1) fiber
optic cable in conduit; (2) engineering and construction labor; (3) optronic and
electronic equipment and (4) rights-of-way. The rights-of-way are provided
pursuant to long-term leases or other arrangements (some of which may provide
for substantial continuing payments) entered into with railroads, highway
commissions, pipeline owners, utilities or others. Although we have not yet
obtained all the necessary rights-of-way along the planned routes, it is
anticipated that the rights-of-way will be available.
 
     Through cost-saving arrangements, our network cost has been reduced. The
cost-saving arrangements include: (1) leasing or selling excess fiber to other
carriers; (2) exchanging excess fiber for fibers or capacity on other carriers'
networks; or (3) installing our fibers in new routes being constructed by other
carriers along our proposed network expansion route in exchange for (a) sharing
network construction costs; (b) allowing other carriers to use excess fiber
along certain of our network routes; or (c) allowing other carriers to add their
fiber to certain segments of our network. See "Risk Factors -- Negative Cash
Flow and Capital Requirements." We have experience with these arrangements with
several major carriers, including MCIWorldCom, Sprint, Cable & Wireless, Qwest,
GST and the Williams Company.
 
PRIVATE LINE SERVICES
 
  Overview
 
     Approximately 33.7% of total revenue in 1998, approximately 31.0% of total
revenue in 1997, and 35.4% of total revenue in 1996 were generated by the
private line business. We currently have over 275 active private line customers.
 
  Strategy
 
     We seek to expand our private line business through meeting these
objectives:
 
     - expand our network to provide additional capacity on existing routes and
       new high-capacity routes with access to major population centers
       (including routes that may be attractive to other major carriers as
       backup routes);
 
     - provide high-quality, reliable private line services on a fixed-cost
       basis at rates generally below those currently offered by competitors;
       and
 
     - use the expanded network as a platform to support increased private line
       circuit demand from Internet, ATM-Frame Relay, multimedia, and other
       capacity-intensive applications.
 
     We have reduced expenses in the private line business related to
transmission expense as traffic from circuits leased from other carriers moved
onto our network.
 
                                       10
<PAGE>   11
 
  Customers and Marketing
 
     We have over 275 active private line customers, including AT&T,
MCIWorldCom, Frontier, Sprint, PSINet, Cable & Wireless, Qwest and Level 3
Communications. We have historically enjoyed a high customer retention rate in
the private line business.
 
     Private line circuit capacity is generally marketed to: (1) ISP's to
support their Internet business; (2) facilities-based carriers that require
private line capacity where they have geographic gaps in their facilities, need
additional capacity or require geographically different, alternative routing;
and (3) non-facilities-based carriers requiring private line capacity to carry
their customers' long distance traffic. Most of our direct sales efforts are
focused on providing customer support services to existing customers and on
adding new customers. A single sales force sells both private line and wholesale
long distance services. That sales force consists of 43 account managers based
at our headquarters in Austin and at direct sales offices in or near Washington,
D.C., New Haven, San Francisco, Kansas City, Chicago, St. Louis, Houston and
Sunrise Beach, Missouri.
 
     During 1998 MCIWorldCom accounted for approximately 19.4% of our private
line revenue. See "-- Risk Factors -- Reliance on Major Customers."
 
  Prices and Contracts
 
     Private line sales contracts are typically either service agreements that
provide for recurring monthly payments or IRU agreements in which a large
payment is received by us at the beginning of the service term.
 
     The first type of sales contract is the monthly service agreement. These
agreements generally provide for either a lease with original terms of 1 to 5
years and for monthly payment in advance on a fixed-rate basis, calculated
according to the capacity and length of the circuit. Generally, month-to-month
service agreements contain substantial "take or pay" commitments. Furthermore,
circuit orders under private line agreements are generally for a term of one
year or more and may not be canceled by the customer. However, the agreements
generally provide that the customer may terminate service without penalty "for
cause" in the event of substantial and prolonged outages arising from causes
within our control, and for other defined causes. Generally, the lease
agreements further provide that the customer may terminate the agreement "for
convenience" at its discretion at any time upon giving us notice. However,
termination for convenience generally requires either full payment of all
charges through the end of the initial lease term or payment of substantial
termination fees intended to allow the recovery of certain costs and, in some
cases, lost profits. Damages attributable to a customer's termination of the
agreement are generally reduced by an offset for any income earned from
re-leasing the terminated capacity during the remaining portion of the lease
term.
 
     The second type of sales contract is the IRU agreement. IRU agreements
generally give the customer the right to use a specified level of capacity for a
fixed period. The terms of IRU agreements range from 10 to 20 years and are
typically longer than the terms of monthly service agreements. IRU agreements
are typically paid for by the customer at the time the contract is signed.
 
  Competition
 
     Our competitors in this business include AT&T, which is the largest
supplier of long distance voice and data transmission services in the United
States, MCIWorldCom, Sprint, Qwest, and the Williams Company. Certain of these
competitors have substantially greater financial resources than we have and some
have a more extensive transmission network than our network. Because of the
Telecom Act and agreement with the World Trade Organization ("WTO"), countries
are required to open world telecommunications markets to competition. This
became effective on February 5, 1998, and so United States carriers could now
face competition from foreign carriers. In the future, we will face competition
from the RBOCs, GTE Corporation and others such as electric utilities and cable
television companies. See "-- Risk Factors -- Competition."
 
                                       11
<PAGE>   12
 
LONG DISTANCE SWITCHED SERVICES
 
  Overview
 
     Long distance switched services are telecommunications services processed
through digital switches and carried over long-haul circuits and other
transmission facilities we own or lease. We sell long distance switched services
on both a wholesale and a retail basis charging by minutes-of-use per call, with
payment due monthly after services are rendered. In 1998, sales of long distance
switched services accounted for approximately 62.0% of total revenue.
 
  Strategy
 
     We seek to increase margins from long distance switched services business
through meeting these objectives:
 
     - increase retail penetration in small and medium size businesses through
       our rapidly expanding retail sales force;
 
     - offer higher-value integrated packages of dedicated circuit, Internet and
       long distance services to end users;
 
     - offer pricing which is generally lower than that charged by AT&T and
       competitive with that of other long distance service providers
 
     We seek to increase the profitability of the long distance switched
services business by offering higher value packages of services, decreasing our
average cost per minutes-of-use through efficiencies achieved with higher
volumes and through reducing network costs through our network expansion. See
"-- Business Strategy."
 
  Customers and Marketing
 
     We intend to focus on selling retail long distance services directly to
small and medium size businesses, targeting those businesses that use $1,000 or
more per month of such services. At December 1998, 305 sales executives were
responsible for selling retail long distance services. The wholesale business
sales efforts have been focused on large reseller customers with monthly volumes
of at least $1.0 million.
 
     Excel. Excel has been our largest long distance switched services customer.
In 1998 Excel accounted for 18.2% of total switched long distance revenue. Going
forward, this will change as our contract with them has been amended to include
both private line and long distance switched service business. We expect Excel
to use more of our private line services and reduce its use of our long distance
switched services.
 
     Customer Contracts. Our rates for switched long distance services generally
vary with the duration of the call, the day and the time of day the call was
made and whether the traffic is intrastate, interstate or international. The
rates charged are not affected by which facilities are selected by the switching
centers for transmission of the call or by the distance of the call. Different
rates are applied to combined origination and termination services than are
applied to termination services. The agreements with customers for long distance
switched services generally provide for payment in arrears based on
minutes-of-use. The agreements generally also provide that wholesale customers
may terminate the affected service without penalty in the event of substantial
and prolonged outages arising from causes within our control, and for certain
other defined causes. Generally, the agreements provide that the customer, in
order to avoid being obligated to pay higher rates (or, in some cases,
penalties), must use at least a minimum dollar amount (measured by dollars or
minutes-of-use) of long distance switched services per month for the term of the
agreement.
 
     Customer Care. We believe that customer support is an important factor in
attracting and retaining both wholesale and retail customers for our long
distance switched services. Customer service for long distance switched services
includes processing new accounts, responding to inquiries and disputes relating
to billing, credit adjustments and cancellations and conducting technical repair
and other support services. We manage customer care for wholesale customers
using IXC Online, which is our proprietary customer service software
 
                                       12
<PAGE>   13
 
that is designed to allow customers to: (1) place orders for switched services;
(2) arrange with the appropriate LEC to register the carrier as the designated
long distance carrier for its new end users; and (3) download current call
detail records for its end users for billing purposes.
 
  Decreased Costs through Increased Volumes or Greater Efficiency
 
     Large minutes-of-use volumes should enable us to spread fixed network costs
over more minutes-of-use and to more efficiently configure our network, thereby
reducing the average cost per minutes-of-use. We seek to efficiently configure
the circuits available so that calls are completed on a cost-effective basis.
Periodically, calling patterns are analyzed using mathematical formulas to
determine the circuit capacity required to cost-effectively service the expected
call volume. For example, if there is sufficient calling traffic available, the
transmission circuitry in an area may be upgraded from DS-1 to DS-3. A similar
analysis will be made when deciding whether to install a new switch in a region.
We are continuing to develop procedures to better analyze expected traffic
patterns in order to enhance network efficiency and identify customers
generating an unprofitable mix of traffic.
 
  Services
 
     We market a variety of wholesale and retail switched long distance
services, including 1-800, credit card, operator services, directory assistance,
international service and the following:
 
     1 Plus Switched Service. Provides direct-dial service over our network.
 
     1 Plus Dedicated Service. Provides direct-dial service over our network for
end users that have arranged to connect to our nearest hub through a local loop.
This service is less expensive than 1 Plus Switched Service because the access
charges of the end user's LEC are reduced.
 
     800/888 Switched Service. Provides service for business over our network
that allows calls to be made for specific location at no charge to the calling
party. Use of the "800" or "888" service code denotes calls that are to be
billed to the receiving party.
 
     800/888 Dedicated Service. Provides 800/888 service over our network for
end users that have arranged to connect to our nearest hub through a local loop.
This service is less expensive than 800/888 Switched Service because the access
charges of the end user's LEC are reduced.
 
     Calling Card Service. Provides telephone card service.
 
     Debit Card Service. Provides prepaid telephone card service.
 
     Switched Termination Service. Provides carrier customers using a switch in
one area with termination services in other areas.
 
     Direct Access Line Service. Provides customers with direct access to long
distance lines, bypassing the LEC lines.
 
  Acquisitions and Investments
 
     The acquisitions of Telecom One in July 1997 and Eclipse in June 1998 were
made to enhance our retail sales growth, using shares of our common stock as
consideration. We obtained 4.25 million shares of DCI Telecommunications, Inc.
in November 1998, in consideration for a note from one of our customers which
was also a vendor of DCI and other consideration. DCI is an international
provider of telephone services, including long distance, prepaid telephone cards
and Internet services. DCI has an option to repurchase all 4.25 million shares
of its common stock from us through April 1, 1999, at a price of approximately
$18 million. In the event the option is not exercised there will be an
adjustment to the number of shares we own on June 1, 1999, if the 15-day volume
weighted average price of the DCI shares is outside the range of $4.20 to $5.88.
After this adjustment, if any, we will own common stock of DCI with a minimum
value of approximately $18 million and a maximum value of $22 million. We
account for this investment using the cost method.
 
                                       13
<PAGE>   14
 
     In January 1999, we entered into an agreement (subject to certain
regulatory requirements and other conditions) to acquire Coastal in exchange for
shares of our common stock, warrants to purchase common stock, a note and cash.
Coastal is a retail long distance service provider with over 100,000 small
business customers. We may, from time to time, acquire other businesses, assets
or securities of companies that we believe provide a strategic fit with our
business and network. We continue to review potential acquisition candidates and
have held discussions with several of these candidates. We may use our common
stock as consideration for other acquisitions. See "-- Risk Factors -- Growth
Through Acquisitions; Integration of Acquired Businesses."
 
  Competition
 
     We compete with numerous facilities-based interexchange carriers, some of
which are substantially larger, have substantially greater financial, technical
and marketing resources and use larger transmission systems. AT&T is the largest
supplier of long distance switched services in the United States inter-LATA
market. Other competitors in selling long distance switched services include (1)
facilities-based carriers such as MCIWorldCom, Sprint, Frontier, and Qwest and
certain regional carriers, and (2) non-facilities-based carriers. Because of the
Telecom Act and the recent WTO Agreement, we will also face competition from the
RBOCs, GTE and others such as electric utilities, cable television companies and
foreign companies. We believe that the principal competitive factors affecting
us are price, customer service (particularly with respect to speed in delivery
of computer billing records and set-up of new end users with the LECs), ability
of our network to complete calls with a minimum of network-caused busy signals,
scope of services offered, reliability and transmission quality. The ability to
compete effectively will depend upon our ability to maintain high-quality
services at prices generally equal to or below those charged by our competitors.
In the United States, price competition in the long distance business has been
intensive over the last 5 years. The combination of MCI and Worldcom in 1998 and
the 1995 classification by the FCC of AT&T as a "non-dominant" carrier, freeing
it from price regulation, have resulted in decreasing long distance service
prices. We believe that to compete with these large competitors, we need to
price our services below theirs. See "-- Risk Factors -- Competition."
 
DATA/INTERNET SERVICES
 
  Overview
 
     Data/Internet services generated $9.0 million of revenue in 1998,
representing approximately 1% of our 1998 revenue. Prior to 1998, we had less
than $1.0 million of revenue in this segment.
 
  Strategy
 
     We plan on expanding our data/Internet business through meeting these
objectives:
 
     - expand our network's ability to carry digital traffic by using our 26
       ATM-Frame Relay switches and using SONET technology that supports
       capacity-intensive products;
 
     - increase the products available by having our 1998 Internet acquisitions
       act as product houses to quickly bring to market new Internet-related
       products;
 
     - sell the products developed by this product group as both stand-alone
       products and as integrated products with our private line and long
       distance products;
 
     - use our wholesale and retail sales forces to sell products developed by
       our data/Internet group; and
 
     - implement a billing system that will invoice customers for data/Internet,
       private line and long distance services on one bill;
 
     In February 1999, we announced an alliance with Cisco Systems, Inc. to
deploy emerging packet-based technologies utilizing Cisco's internetworking
solutions over our network. This alliance is working on areas of emerging
Internet protocol internetworking such as packet over SONET product and service
definition. As
 
                                       14
<PAGE>   15
 
part of this relationship, we will be deploying Cisco 12000-gigabit switch
routers throughout an OC-48 advanced Internet backbone network called
Gemini2000. Using this configuration, we will be positioned to offer end-to-end
Internet Protocol based solutions at the customer premises.
 
  Customers and Marketing
 
     We had over 36,000 data/Internet customers at year-end 1998. These
customers are generally small and mid-size businesses which use our services to
enhance internal communications and communications and commerce with their
customers. In 1998 we had no materially significant customers in this segment of
our business.
 
     Our wholesale and retail sales forces provide the direct sales efforts for
these services. These sales forces have sales offices in major cities throughout
the United States. Our wholesale and retail customer service departments provide
customer care for these customers. Technological issues are handled by our
employees in the product development area.
 
  Prices and Contracts
 
     The data/Internet segment includes a variety of services; therefore, we do
not have a standard agreement. Agreements for non-usage based services are
generally 12 month agreements which may be terminated by either side with 30
days notice. These agreements may contain a minimum take or pay period. These
services are generally billed to the customer in advance of the service being
provided. Usage based services are typically also 12 month agreements with 30
day termination available. The customer is generally billed after the services
are provided. Agreements for one-time services, such as consulting work, are for
specific work performed and are billed to the customer based either upon project
completion criteria or upon when the services have been completed.
 
  Acquisitions and Investments
 
     From March through June 1998, we acquired four companies to expand our
data/Internet product offerings, as follows:
 
     - We acquired NEI, a company that provides data consulting services and
       network design solutions. Beginning in 1999 NEI will also become a Cisco
       Systems, Inc. certified training center;
 
     - We acquired Data Place, which supplies companies with complete network
       systems integration solutions. This acquisition gave us additional
       expertise in the systems integrator channel for selling broadband
       services.
 
     - We acquired NTR, an ISP located in Louisville, Kentucky. NTR offers
       custom back office support to wholesale customers as well as multiple
       Internet dial-up services. Through this subsidiary, we offer a fully
       operational back office solution, including a private label capability
       for supporting wholesale accounts. This affords us wholesale dedicated
       and dial-up products for both our wholesale and retail customer bases.
 
     - We acquired the assets of SMARTNAP, a subsidiary of SMART Technologies in
       Austin, Texas. SMARTNAP is an ISP that provides aggregated Internet
       access, collocation of Web servers and routers and end-site Internet
       managed connectivity. These operations gave us an immediate entry into
       Web hosting and dedicated Internet connectivity markets.
 
     In February 1998 we consummated agreements with PSINet in which we provided
PSINet an IRU in 10,000 miles of OC-48 capacity on our network over a 20-year
period in exchange for 10.2 million shares of PSINet's common stock. The 10.2
million shares of PSINet stock was valued at $211.6 million at December 31,
1998. We also acquired 34% of Applied Theory, which gave us access to critical
Internet expertise. Applied Theory services the New York state research and
education community.
 
                                       15
<PAGE>   16
 
  Competition
 
     There are many competitors in the data/Internet field. Competition for
consultative type services range from individuals to large consulting firms such
as Andersen Consulting. Competition for providing Internet service comes from
ISPs of all sizes including MCIWorldCom, which acquired UUNet, and PSINet.
 
     Some of our competitors have substantially greater financial, technical and
marketing resources. They also have more experience in delivering
Internet-related products and therefore, have greater market share and
brand-name recognition. In addition, traditional telecommunications carriers,
such as AT&T, Cable & Wireless and Sprint compete with us in offering Internet
access services. These carriers have greater network coverage and large existing
customer bases as well as greater financial and technical resources. Internet-
related businesses compete based on price, customer service, and quality of
service delivery. The level of competition we expect to experience in the
business is affected by consolidations and mergers of existing Internet service
and backbone providers and the entry into the Internet service market of
traditional telephone service providers including CLECs and other interexchange
carriers.
 
REGULATION
 
     Certain of our subsidiaries operate as communications common carriers.
These subsidiaries are subject to applicable FCC regulations under the
Communications Act of 1934, as amended (the "Communications Act"), some of which
may be affected by the Telecom Act and regulations already promulgated and
currently being developed thereunder. See "--  Risk Factors -- Recent
Legislation and Regulatory Uncertainty." In addition, those subsidiaries that
operate our microwave network are subject to applicable FCC regulations for use
of the radio frequencies. The FCC issues licenses to use certain radio frequency
spectrum at transmitter site locations. Each license gives the right to operate
a microwave radio station for the term of the license. Currently, we hold
licenses to operate the microwave sites in the network. The licenses all expire
in 2001. These licenses are renewable upon application containing a statement
that they are used in compliance with the applicable FCC rules. We expect that
the FCC will renew these licenses in due course. The Communications Act
currently limits ownership of an entity holding such licenses by non-U.S.
citizens, foreign corporations and foreign governments. We are subject to
regulation by the Federal Aviation Administration with respect to the
construction of transmission towers and to certain local zoning regulation
affecting construction of towers and other facilities.
 
     Recent court decisions (which were issued before the Telecom Act) require
the FCC to require carriers to file tariffs. However, the FCC currently does not
actively exercise its authority to regulate such carriers' rates and services.
Moreover, the Telecom Act gives the FCC authority to forbear from applying
certain provisions of the Communications Act, including the requirement that
carriers file tariffs. In 1997, the FCC issued an order implementing a mandatory
detariffing policy that eliminates the tariff requirements for non-dominant
interstate, interexchange carriers. An appeal of the FCC's order resulted in the
order being stayed. The appeal is being held in abeyance, pending the FCC's
action on motions for reconsideration. In this proceeding, on March 18, 1999,
the FCC adopted rules requiring long distance carriers to disclose their rates
on the Internet, once interstate long distance services have been detariffed.
The FCC's public disclosure rules will not go into effect until the appellate
court has ruled on the merits of the stayed appeal. Regardless of the outcome of
the detariffing proceeding, the FCC will retain jurisdiction to act upon
complaints against any common carrier for failure to comply with its statutory
obligations as a common carrier.
 
     The FCC regulates many of the rates, charges and services provided by the
LECs. Such regulation can also affect the costs of our business and for our
customers and competitors, because carriers must purchase local access services
from LECs to originate and terminate calls. The FCC's current price cap
regulation of the RBOCs and other LECs provides them with considerable
flexibility in pricing their services. Pursuant to the Telecom Act, the FCC
issued two orders regarding access charge reform and transport rate structure
and pricing. The FCC's access charge reform order was recently affirmed by the
U.S. Court of Appeals for the Eighth Circuit. LEC tariffs implementing the
requirements of the FCC orders have gone into effect. The FCC recently sought
additional comments on access charge reform, and the outcomes of any subsequent
FCC rulemaking proceedings are impossible to predict. Future changes with
respect to access charges may occur.
 
                                       16
<PAGE>   17
 
     Further, on July 18, 1997, in Iowa Utilities Board v. FCC, the United
States Court of Appeals for the Eighth Circuit invalidated key portions of the
FCC's August 29, 1996 interconnection order, which the FCC had adopted to
facilitate the emergence of local exchange competition. The Eighth Circuit's
order was appealed to the United States Supreme Court, and on January 25, 1999,
the Supreme Court overturned the Eighth Circuit's ruling. The Supreme Court
reinstated most aspects of the FCC's interconnection rules. However, the Supreme
Court remanded to the FCC the issue of which specific local exchange network
elements must be made available to competitors of local exchange carriers. The
further emergence and development of local exchange competition may likely be
delayed because of appeals of other aspects of the interconnection order and the
FCC's decision on the remand issue. Consequently, long distance companies such
as us may not benefit as quickly from the lower access costs that might
otherwise have resulted had competition in the provision of local access
services not been delayed.
 
     The Telecom Act directed the FCC to establish a system for compensating
payphone service providers ("PSPs") on a per-call basis for calls made from
payphones, including coinless calls, such as calling card, collect, and "800"
calls. On October 9, 1997, the FCC released an order that set a $0.284 per-call
"default" rate that long distance carriers are required to pay to PSPs for
certain coinless calls. The FCC's order went into effect, but was appealed, and
the order was subsequently remanded to the FCC. The FCC recently issued an order
setting a default rate of $0.24 per call. However, the new order has not yet
gone into effect. Further, the new order is likely to be appealed. Accordingly,
the amount of compensation long distance carriers will ultimately be required to
pay to PSPs is currently uncertain.
 
     In addition, the Telecom Act allows the RBOCs and others to enter the long
distance business. Entry of the RBOCs or other entities such as electric
utilities and cable television companies into the long distance business may
have a negative impact on IXC or our customers. The Telecom Act also establishes
criteria for RBOC re-entry into in-region long distance markets, and RBOCs are
required to obtain FCC approval before they can begin providing such services.
To date, the FCC has rejected 5 such RBOC applications, at least one of which
was appealed. In that proceeding, the FCC's order denying the application was
recently upheld by the appellate court. On December 31, 1997, the U.S. District
Court for the Northern District of Texas ruled that the provisions of the
Telecom Act that apply specifically to RBOCs are unconstitutional. On February
11, 1998, the District Court stayed its order, and the order was appealed. On
September 4, 1998, the U.S. Court of Appeals for the Fifth Circuit overturned
the district court's December 31, 1998 Order. The U.S. Court of Appeals for the
D.C. Circuit has also rejected arguments that the Telecom Act's restrictions on
RBOC reentry are constitutional. Further, the FCC has been working with the
RBOC, using a "collaborative process," to facilitate the review and ultimately
the approval of such applications.
 
     The Telecom Act also provides that state proceedings may in certain
instances determine access charge long distance providers are required to pay to
the LECs. It is uncertain at this time what effect such proceedings may have on
such rates. There can be no assurance that such rates will not be increased.
Such increases could have a material adverse effect on our customers and us. See
"-- Risk Factors -- Recent Legislation and Regulatory Uncertainty" and "Industry
Overview."
 
     Our ability to provide long distance services within any state is generally
subject to regulation by a regulatory board in that state. As of December 31,
1998, we are operating and have obtained the requisite licenses and approvals in
the 48 contiguous continental United States.
 
MARCA-TEL
 
     At December 31, 1998, we owned 50% of Progress International, LLC, which
owned 49% of Marca-Tel. This resulted in our indirect ownership in Marca-Tel of
24.5%. The remaining 51% of Marca-Tel was owned by a Mexican individual and a
subsidiary of Fomento Radio Beep, S.A. de C.V. The other 50% of Progress was
owned by Westel International, Inc. Marca-Tel is developing a telecommunications
network in Mexico.
 
     Through December 31, 1998, we had invested $44.8 million in Progress,
including $14.9 million made on behalf of Westel. In 1998 Westel agreed to give
us a note for $14.9 million to repay us for certain contributions previously
made to Progress on Westel's behalf. The balance of the note receivable from
Westel at December 31, 1998, was $9.4 million. The final note payment was due in
May 1999 and was secured by a
                                       17
<PAGE>   18
 
portion of Westel's ownership in Progress. In March 1999 Westel agreed to
transfer certain of its share interest collateral to us as repayment of Westel's
note payable to us. We gave Westel the right to repurchase such share interests
no later than May 31, 1999.
 
     We account for Progress and Marca-Tel using the equity method of
accounting. Through the third quarter of 1998, we recognized our share of losses
from Progress and Marca-Tel based on the relative amount of funds we contributed
to Progress compared to Westel. Beginning with the fourth quarter of 1998, the
sum of our remaining investment in Marca-Tel and the promissory note from Westel
was below zero due to the amount of losses we previously recorded; therefore, we
suspended recognition of losses from Marca-Tel. We will continue to suspend
recognition of losses until Marca-Tel begins reporting net income and all
suspended losses have been recovered.
 
     In September 1995 Marca-Tel entered into an agreement with a vendor to
construct a portion of Marca-Tel's telecommunications network in Mexico and to
provide significant financing for construction and related equipment and fiber
purchases. The vendor has been granted security interests in all of Marca-Tel's
assets, including the telecommunications network, and the owners of Marca-Tel,
including Progress, have pledged their interests in Marca-Tel to collateralize
payment to the vendor. As of December 31, 1998, Marca-Tel owed approximately
$77.1 million to the vendor. In February 1999, Marca-Tel amended its credit
agreement with the vendor. Marca-Tel restructured its financing and deferred
certain payments until June of 1999. In exchange, Marca-Tel granted the vendor
the right to acquire up to ten percent of Marca-Tel's non-voting common shares.
As of March 1, 1999, the vendor owned 7% of the common equity of Marca-Tel. This
has diluted our ownership interest. Progress' overall ownership in Marca-Tel is
now 48%, and our indirect interest is now 24%. If Marca-Tel does not pay the
vendor, it will be in default under its amended credit agreement.
 
     Marca-Tel has put further investment in new fiber routes on hold and
reduced its scope of operations, awaiting more suitable regulatory and market
conditions. We do not anticipate providing significant additional funding to
Progress for investment in Marca-Tel until the regulatory and market conditions
in Mexico improve. We are not obligated to continue to fund Progress or
Marca-Tel. Our existing indentures and our $600 million credit facility contain
significant limitations on the amount we may invest in Marca-Tel and other
non-majority owned entities. However, failure to provide further significant
funding to Progress may prevent Marca-Tel from meeting its financial obligations
and may result in the foreclosure of the vendor's security interest. Our
interest in Progress, and thus our indirect interest in Marca-Tel, could be lost
entirely.
 
EMPLOYEES
 
     At December 31, 1998, we employed 1,567 people, of whom 568 provided
operational and technical services, 62 provided engineering services and the
balance were engaged in administration and marketing. Our employees are not
represented by any labor union. We consider our employee relations to be good
and have not experienced any work stoppages.
 
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<PAGE>   19
 
                                  RISK FACTORS
 
NEGATIVE CASH FLOW AND CAPITAL REQUIREMENTS
 
  Significant Amount of Capital Expenditures Required in our Business
 
     Our capital expenditures were $476.4 million and our interest cost
including capitalized interest was $47.9 million in 1998. Our earnings before
interest, taxes, depreciation and amortization, or EBITDA, were $90.7 million in
1998. Our cash flow from operating activities was $202.3 million and our net
loss was $162.5 million in 1998. We expect to make capital expenditures of over
$600 million during 1999 and substantial amounts thereafter. We expect to meet
the cash requirements of our capital expenditures from:
 
     - cash on hand;
 
     - cash flow from fiber sales and operations; and
 
     - borrowings under our $600 million credit facility;
 
     - additional equity and/or debt financings; and
 
     - vendor financing, if available;
 
     We expect to incur significant additional debt to fund our capital
expenditures and expand our business. Among other factors, cost-saving
arrangements, increases or decreases in traffic on our network, and unexpected
costs, delays or advances in the timing of capital expenditures may cause
capital expenditures to vary materially.
 
     Our ability to make capital expenditures depends in part on:
 
     - completing our network expansion as scheduled;
 
     - satisfying our fiber sale obligations;
 
     - entering into cost-saving arrangements with carriers or other large users
       of fiber capacity;
 
     - meeting financial covenants to allow borrowing under our bank credit
       line;
 
     - otherwise raising significant capital; and/or
 
     - increasing cash flow.
 
     Our failure to accomplish any of these may significantly delay or prevent
capital expenditures. If we are unable to make our capital expenditures as
planned, our business may grow slower than expected. This would have a material
adverse effect on our business, financial condition and results of operations
and the value of our securities.
 
  Insufficient Cash Flow from Operations
 
     We need cash to meet the operating expenses of our long distance switched
services and data/Internet businesses. These services are processed through
digital switches and delivered over long-haul circuits and other transmission
facilities. To offer long distance switched services, we installed switches and
connected them to our network and to the local exchange carriers or LECs, who
provide local telephone services. We acquired new software and hired personnel
to establish a national switched network. Our long distance switched services
business did not generate sufficient gross margins to cover the operating
expenses required to support this business. Our goals for continued gross margin
improvement include:
 
     - obtaining traffic that meets our profitability requirements and aligns
       with our current and planned network;
 
     - identifying new high-value products and customers with large capacity
       requirements;
 
     - identifying Internet, intranet and data traffic opportunities; and
 
                                       19
<PAGE>   20
 
     - identifying joint venture and acquisition candidates to increase the flow
       and mix of traffic on our network and increase our global reach.
 
     We cannot guarantee that we will be able to generate sufficient gross
margins in the long distance switched services business in the future. For a
discussion of important factors that could cause the failure of our long
distance switched services business to generate sufficient gross margin, see
"-- Development Risks and Dependence on Long Distance Switched Services
Business."
 
  Significant Amount of Interest and Dividend Payments
 
     We currently make interest payments on our 9% Senior Subordinated Notes of
which there is $450 million in principal outstanding. We also make interest and
principal payments under a $28 million secured equipment financing facility with
NTFC Capital Corporation and Export Development Corporation of which $23.8
million was outstanding at December 31, 1998. In addition, we also make interest
payments on a $600 million credit agreement with institutional lenders of which
$200 million was borrowed at December 31, 1998. We will also have payments due
for other debts we may incur. Dividends on our 7 1/4% Convertible Preferred
Stock are payable quarterly in cash, except that such dividends may be paid in
additional shares of 7 1/4% Convertible Preferred Stock on or before March 31,
1999. Dividends on our 12 1/2% Exchangeable Preferred Stock are payable in cash
except that such dividends may be paid in shares of the same stock on or before
February 15, 2001. Dividends on our 6 3/4% Convertible Preferred Stock are
payable quarterly in cash, except that we may pay dividends using shares of
common stock if we are prohibited from paying dividends in cash under the terms
of our debt agreements. Our ability to meet our debt and dividend obligations
and to obtain additional funding could be impaired by the following factors:
 
     - delays in our network expansion;
 
     - larger than anticipated capital expenditures for our network; and
 
     - continued negative cash flow from the long distance switched services
       business.
 
     Any of these factors would have a material adverse effect on our business,
financial condition and results of operations since we might not have sufficient
cash to make these payments when required. See "-- Risks Relating to the Network
Expansion and acquiring Rights-of-Way and Permits," and "-- Development Risks
and Dependence on Long Distance Switched Services Business."
 
     We may have to curtail or delay our planned network expansion if we are
unable to obtain financing on acceptable terms, complete our existing fiber
sales, or sell additional equity and/or debt securities. Furthermore, we may be
required to obtain the consent of, or repay, our debtholders before acquiring
additional debt. Our failure to obtain additional financing or the decision to
cut back or delay our network expansion could have a material adverse effect on
our business, financial condition and results of operations and the value of our
securities.
 
     The cash requirements described above do not include any cash that may be
required for acquisitions we may make. We have entered into an agreement to
acquire Coastal. We will be required to pay $62.5 million in cash and we have an
option to pay an additional $25 million in cash instead of using our common
stock to complete the acquisition. See "-- Growth Through Acquisitions;
Integration of Acquired Businesses."
 
SUBSTANTIAL INDEBTEDNESS AND ABILITY TO SERVICE DEBT
 
     We have a substantial amount of debt. As of December 31, 1998, we had
approximately $679.0 million of long-term debt and capital lease obligations
principally consisting of the 9% Senior Subordinated Notes and the $200 million
credit agreement.
 
     Under our credit facility with several institutional lenders, we may, if
certain conditions are met, borrow up to $600 million of which $200 million has
been borrowed as of December 31, 1998. We are in discussions with various
investment bankers, vendors and lending institutions regarding additional debt
financing transactions. If we complete additional debt financing transactions,
or if we exchange our 12 1/2% Exchangeable
 
                                       20
<PAGE>   21
 
Preferred Stock for 12 1/2% Subordinated Exchange Debentures, as allowed under
our charter documents, our level of debt will increase even further.
 
     Our large amount of indebtedness could significantly impact the holders of
our common stock and our other securities, due to the following:
 
     - All or most of our cash flow from operations could be needed to meet our
       debt obligations and would not be available for use in our business.
 
     - We could be more vulnerable if there is a downturn in our business or in
       general economic conditions or if interest rates increase.
 
     - Our ability to obtain additional financing for working capital, capital
       expenditures or other reasons may be limited.
 
     - We may be at a competitive disadvantage with our competitors who are not
       as highly leveraged.
 
     Our ability to satisfy our debt obligations depends on our future operating
performance and our ability to obtain additional debt or equity financing.
Economic conditions and financial, business and other factors, many of which are
beyond our control, will affect our ability to make these payments. If we are
unable to generate sufficient cash from operations to make the scheduled
payments on our 9% Senior Subordinated Notes or meet our other obligations, we
will need to refinance or obtain additional financing. We cannot assure you that
our cash flow from operations will be sufficient to meet our debt obligations as
they become due or that we will be able to satisfy the dividend and redemption
requirements of our preferred stock for the next several years. If we do not
substantially improve our operating results, we could face significant liquidity
problems which would require us to raise additional capital by issuing debt or
equity securities. We cannot assure you that we will be successful in obtaining
such financing.
 
RECENT AND EXPECTED LOSSES
 
     We reported a net loss of $162.5 million for the year ended December 31,
1998 and a net loss of $99.2 million for the year ended December 31, 1997. These
net losses may continue. During the remainder of 1999 and thereafter, our
ability to generate operating income, EBITDA and net income will depend largely
on demand for the private line circuits constructed in our network expansion and
the success of our long distance switched services and data services. We cannot
assure you that we will be profitable in the future. Failure to accomplish these
goals will impair our ability to:
 
     - meet our obligations under the 9% Senior Subordinated Notes, our $600
       million credit facility, or other indebtedness;
 
     - pay dividends on our preferred stock; or
 
     - raise additional equity or debt financing needed to expand our network or
       for other reasons.
 
     These events could have a material adverse effect on our business,
financial condition and results of operations and the value of our securities.
 
RISKS RELATING TO THE NETWORK EXPANSION AND ACQUIRING RIGHTS-OF-WAY AND PERMITS
 
     Our continuing network expansion is an essential element of our future
success. In the past, we have experienced delays in constructing our network and
may experience similar delays in the future. These delays have prevented us from
transferring long distance traffic from leased facilities to our facilities. We
have substantial existing commitments to purchase materials and labor for
expanding our network. In addition, we will need to obtain additional materials
and labor that may cost more than anticipated. Some sections of our network are
constructed by other carriers or their contractors pursuant to cost-saving
arrangements. One type of cost-saving arrangement is where another carrier
constructs a route and includes additional fibers for our use. We cannot
guarantee that these third parties will complete their work according to
schedule. If any delays prevent or slow down our network expansion our financial
results and the value of our securities would be materially and adversely
effected.
                                       21
<PAGE>   22
 
     The expansion of our network depends, among other things, on acquiring
rights-of-way and required permits from railroads, utilities and governmental
authorities on satisfactory terms and conditions and on financing such
expansion, acquisition and construction. In addition, after our network is
completed and required rights and permits are obtained, we cannot guarantee that
we will be able to maintain all of the existing rights and permits. If we fail
to obtain rights and permits or we lose a substantial number of rights and
permits our financial results would suffer which could have a material adverse
effect on our business, financial condition and results of operation and the
value of our securities.
 
RISK OF NETWORK FAILURE
 
     To successfully market our services to business and government users, our
network must have sufficient capacity and be reliable and secure. Our network
and other companies' networks that we use can sometimes experience physical
damage, power loss, capacity limitations, software defects, breaches of security
(by computer virus, break-ins or otherwise) and other disruptions. All of these
hazards may cause interruptions in service or reduced capacity for customers.
Poor service due to interruptions or reduced capacity could negatively impact
our business, financial condition and results of operations and the value of our
securities.
 
PRICING PRESSURES DUE TO INDUSTRY OVER-CAPACITY
 
     The long distance transmission industry has generally been characterized by
over-capacity and declining prices since shortly after the AT&T break-up in
1984. We believe that in the last several years, increased demand has somewhat
reduced the excess capacity and as a result, reduced competition in pricing.
However, we anticipate that our prices will continue to decline over the next
several years because of new competition. Other long distance carriers (new and
existing) are expanding their capacity and may construct new fiber optic and
other long distance transmission networks. As a result of the recent mergers,
companies such as MCIWorldCom, Inc. and Qwest have become stronger competitors
with larger networks and greater capacity. In addition, the Williams Companies,
Inc. has also announced that it is accelerating the expansion of its national
fiber optic network with a $2.7 billion investment to create a 32,000 mile
system by the end of 2000. There can be significant barriers to building a fiber
optic network for companies entering the long distance business, including
substantial construction costs, the difficulty and expense of securing
rights-of-way, establishing and maintaining a sufficient customer base,
recruiting and retaining personnel and maintaining a reliable network. We
believe that although some new entrants face these barriers, others (such as
Qwest, utility companies or railroads which already have significant
rights-of-way) may not experience some or any of these difficulties. For
example, Level 3 Communications, Inc. has announced it is constructing a 15,000
mile fiber optic communications network using Internet technology, with
completion expected in the first quarter of 2001.
 
     Not only are our competitors expanding existing networks and building new
networks, these networks will have greater capacity. Because the cost of fiber
is a relatively small portion of the cost of building new transmission lines,
companies building such lines are likely to install fiber that provides far more
transmission capacity than will be needed over the short or medium term.
Further, recent technological advances have shown the potential to greatly
expand the capacity of existing and new fiber optic cable. Although such
technological advances may enable us to increase our network's capacity, an
increase in our competitors' capacity could adversely affect our business. If
overall capacity in the industry exceeds demand in general or along any of our
routes, severe additional pricing pressure could develop. Certain industry
observers have predicted that, within a few years, there may be dramatic and
substantial price reductions and that long distance calls will not be much more
expensive than local calls. In addition, several companies (including AT&T and
ICG Communications, Inc.) have announced plans to offer long distance voice
telephony over the Internet at substantially reduced prices. Price reductions
could have a negative and material impact on our business and the value of our
securities.
 
DEVELOPMENT RISKS AND DEPENDENCE ON LONG DISTANCE SWITCHED SERVICES BUSINESS
 
     Our success in the long distance switched services business depends on
generating significant customer traffic, managing an efficient switched long
distance network, providing reliable customer service and
                                       22
<PAGE>   23
 
completing our network expansion on schedule. We have only been managing a
switched long distance network since 1996 and we cannot assure you that this
segment of our business can generate significant gross profits. Our failure to
accomplish any of our objectives would have a material adverse effect on our
results of operations. Our long distance switched services business requires
cash to meet its operating expenses and has generated low gross margins since
1998 due to access costs and uneven traffic patterns creating high network
overflow costs. These gross margins are too low to fund the operating costs
supporting the switched services business.
 
     Access charges are the fees paid by long distance carriers to LECs for
originating and terminating long distance calls on their local networks. In
1998, the FCC mandated a new rate structure for access charges in which a fixed
charge was instituted for connections to the LECs' serving wire centers (direct
trunk transport charge). This charge was in addition to the existing unitary
charge assessed on a minutes of use basis. Large carriers who connect directly
to the LECs' local end office facilities are able to avoid a large portion of
the direct trunk transport charge, and therefore, benefit from the new access
structure. Connection to local end office facilities is economically justifiable
only where there are large minute of use volumes. Because our volumes do not
justify as many direct local office connections as do the volumes of larger
carriers, we may be at a cost disadvantage, versus our larger competitors.
 
     We seek to improve the gross margins generated by our long distance
switched services business by expanding our network, by increasing the number of
our end-user customers who are medium size businesses, and by increasing our
suite of higher-value services. Important factors, some of which are beyond our
control, which could cause the failure of our long distance switched services
business to generate higher gross margin include:
 
     - changes in reseller customers' businesses;
 
     - an inability to attract new customers or problems with transferring them
       to our network;
 
     - loss of existing customers;
 
     - problems operating the switched network;
 
     - customer billing issues;
 
     - credit and collection issues;
 
     - delays in expanding our network; and
 
     - increased expenses related to access charges and network overflow.
 
     Our long distance switched services business credit risk is substantially
greater than that for our private line business. This is because long distance
switched services customers are billed at the end of the month on the basis of
minutes of use and because many long distance switched services customers are
not as well capitalized as most of our private line customers.
 
RISKS INHERENT IN RAPID GROWTH
 
     Part of our business strategy is to grow quickly by expanding our long
distance switched services and data/Internet businesses through selective
acquisitions and expanding our network. In addition, we may grow by acquiring
resellers of long distance services, such as Coastal, Eclipse and Telecom One,
which we believe provide a strategic fit with our business and network. See
"-- Growth Through Acquisitions; Integration of Acquired Businesses." Rapid
growth has placed, and will continue to place, a significant and increasing
strain on our financial, management, technical, information and accounting
resources. See "-- Dependence on Billing, Customer Services and Information
Systems." Our continued rapid growth requires:
 
     - hiring and training new personnel;
 
     - satisfactory performance by our customer interface and billing systems;
 
     - developing and introducing new products; and
 
     - controlling our expenses.
 
                                       23
<PAGE>   24
 
     If we fail to satisfy these requirements, or otherwise manage our growth
effectively, our business and the value of our securities would be materially
and adversely effected.
 
DEPENDENCE ON BILLING, CUSTOMER SERVICES AND INFORMATION SYSTEMS
 
     Sophisticated information and processing systems are vital to our growth
and our ability to monitor costs, bill customers, fill customer orders and
efficiently operate our business. In the past, we have produced billing and
information systems in-house with partial reliance on third-party vendors. These
systems have generally met our needs due in part to the low volume of customer
billing. As our long distance operation grows, the need for sophisticated
billing and information systems will significantly increase. As we integrated
Eclipse's operations, some billing system issues arose which increased our
customer turnover. These issues are being addressed and corrected. No assurance
can be given that these difficulties will be solved quickly or completely.
 
     The development and implementation of our future billing systems relies,
for the most part, on third party vendors delivering products and services. The
following could have a material adverse effect on our business, financial
condition and results of operations:
 
     - vendors failing to deliver proposed products and services in a timely and
       effective manner and at acceptable costs;
 
     - our failure to adequately identify all of our information and processing
       needs;
 
     - the failure of our related processing or information systems, including a
       failure to solve current difficulties; or
 
     - our failure to upgrade systems as necessary.
 
YEAR 2000 RISKS
 
     Some of our older computer programs identify years with two digits instead
of four. It is possible that some of our programs may recognize the Year 2000 as
the year 1900. These Year 2000 problems could result in a system failure or
miscalculations that disrupt operations, including a temporary inability to
process transactions, send invoices or engage in similar normal business
activities. We have identified the programs that will have to be modified or
replaced in order to function properly in the Year 2000 and thereafter. We
believe that the cost of modifying those systems that were not already scheduled
for replacement for business reasons before 2000 is immaterial. Updating the
current software to be Year 2000-compliant is scheduled to be completed by
mid-1999, before any anticipated impact on operating systems. We do not expect
Year 2000 problems to have a material adverse effect on our internal operations,
but it is possible that they could have a material adverse effect on our
customers, suppliers and other business partners and their ability to provide
service or accurate invoices for services and to accurately process payments. It
is also possible that Year 2000 problems could have a material adverse effect on
our customers and their ability to continue using our services, to collect from
their customers and to pay us for services. The cumulative effect of such
problems, if they occur, could negatively impact our business, financial
condition and results of operations and the value of our securities.
 
GROWTH THROUGH ACQUISITIONS; INTEGRATION OF ACQUIRED BUSINESSES
 
     Part of our growth strategy includes the possible acquisition of
businesses, assets or securities of companies that we believe provide a
strategic fit with our business and our network. The success of our strategy is
dependent on our ability to identify suitable acquisition candidates, acquire
such companies on suitable terms and integrate their operations with our
operations. We may be unable to acquire other companies on suitable terms or
otherwise successfully expand our business and product offerings through
acquisitions. Moreover, other telecommunications companies are actively
competing for acquisition candi-
 
                                       24
<PAGE>   25
 
dates, which may result in an increase in the price of acquisition candidates.
Risks commonly associated with acquisitions include:
 
     - potential exposure to unknown liabilities of acquired companies;
 
     - difficulty and expense of integrating the operations, personnel, and
       billing systems of the companies;
 
     - potential disruption to our business;
 
     - potential diversion of management time and attention;
 
     - strained relationships with, and the possible loss of, key employees and
       customers of the acquired business;
 
     - increased amortization expense if an acquisition is accounted for as a
       purchase; and
 
     - dilution to our stockholders if the acquisition is made for stock.
 
     We continually review and evaluate acquisition candidates to complement and
expand our business, and are at various stages of evaluation and discussion with
a number of such candidates. We have not entered into a definitive purchase or
acquisition agreement for any acquisition candidate other than Coastal and there
is no assurance that we will complete a transaction with any of the candidates
with whom we are currently in negotiations. In addition, it is possible that a
substantial number of shares of our common stock or a significant amount of cash
could be used for one or more acquisitions. We intend, when possible, to use our
common stock to pay for all or a portion of the purchase price for future
acquisitions. Our ability to use our common stock could be adversely affected if
our common stock does not maintain sufficient value, potential acquisition
candidates are unwilling to accept our common stock as consideration for the
sale of their businesses, or we do not have a sufficient number of authorized
shares of common stock to effect such acquisition.
 
     Any acquired businesses will need to be integrated with our existing
operations. This will entail, among other things, integration of switching,
transmission, technical, sales, marketing, billing, accounting, quality control,
management, personnel, payroll, regulatory compliance and other systems and
operating hardware and software, some or all of which may be incompatible with
our existing systems. We have limited expertise dealing with these problems. We
cannot assure you that services, technologies or businesses of acquired
companies will be effectively assimilated into our business or product offerings
or that they will contribute materially to our revenues or earnings. In
particular, transferring substantial amounts of additional traffic to our
network can cause service interruptions and integration problems. The risks
associated with acquisitions could have a material adverse effect on our
business, financial condition and results of operations and the value of our
securities.
 
RELIANCE ON MAJOR CUSTOMERS
 
     A relatively small number of customers account for a significant amount of
our total revenues. Our 10 largest customers in 1998 accounted for approximately
46.7% of our revenues. Our 10 largest customers in 1997 accounted for
approximately 49.2% of our revenues.
 
     Most of our arrangements with large customers do not provide any guarantees
that they will continue using our services at current levels. In addition, if
our customers build their own facilities, our competitors build additional
facilities or there are further consolidations in the telecommunications
industry involving our customers, then our customers could reduce or stop their
use of our services which could have a material adverse effect on our business,
financial condition and results of operations.
 
DEPENDENCE UPON SOLE AND LIMITED SOURCES OF SUPPLY
 
     We rely on other companies to supply key components of our network
infrastructure, including telecommunications services, network capacity and
switching and networking equipment. These components are available only from
sole or limited sources in the quantity and quality that we demand. We also
depend on LECs to provide telecommunications services and facilities. In the
past, we have experienced delays in receiving telecommunications services and
facilities, and we cannot be certain that we will be able to obtain
                                       25
<PAGE>   26
 
such services or facilities at an affordable cost, or at all in the future. If
we can not obtain such services or additional capacity on a timely basis or at
an affordable cost, our business, financial condition and results of operations
would be materially and adversely effected. We also depend on our suppliers for
products that comply with various Internet and telecommunications standards,
work with products from other vendors and correctly function in our network. If
our suppliers failed to provide such products, our business, financial condition
and results of operations would be materially and adversely affected.
 
COMPETITION
 
     The telecommunications industry is highly competitive. Many of our
competitors and potential competitors have far greater financial, personnel,
technical, marketing and other resources than we do. Many also have a more
extensive transmission network. These competitors may build additional fiber
capacity in the geographic areas that our network serves or in which we plan to
expand. Qwest, for example, is building a new nationwide long distance fiber
optic network and Frontier Corporation has agreed to pay $500 million to obtain
fibers in Qwest's network. In addition, MCIWorldCom and Qwest have each become
larger competitors of ours in connection with recent mergers. Furthermore,
Williams' announced network expansion and Level 3's proposed new network will
provide additional competition. Many telecommunications companies are acquiring
switches and our reseller customers will have more alternatives for meeting
their switched long distance services needs. We compete primarily on the basis
of pricing, availability, transmission quality, customer service (including the
capability of making rapid additions to add end users and access to end-user
traffic records) and variety of services. Our ability to compete effectively
depends on our ability to maintain high-quality services at prices generally
equal to or lower than those of our competitors.
 
     An alternative method of transmitting telecommunications traffic is through
satellite transmission. Satellite transmission is superior to fiber optic
transmission for distribution communications, like video broadcasting. Although
satellite transmission is not preferred to fiber optic transmission for voice
traffic in most parts of the United States because it exhibits an approximately
one-quarter-second delay, this slight time delay is unimportant for many
data-oriented uses. If the market for data transmission grows, we will compete
with satellite carriers in that market. Also, at least one satellite company has
announced its intention to provide Internet access services to businesses
through satellite technology.
 
     We compete with large and small facilities-based interexchange carriers as
well as with other coast-to-coast and regional fiber optic network providers. We
also sell long distance switched services to both facilities-based carriers and
non-facilities-based carriers (switchless resellers), competing with
facilities-based carriers such as AT&T, MCIWorldCom and Sprint, and certain
regional carriers. Our competition is based on such factors as price,
transmission quality, network reliability and customer service and support. Our
ability to compete effectively in our markets depends upon our ability to
maintain high quality services at prices equal to or less than those of our
competitors, many of whom have extensive experience in the long distance market.
In addition, the federal government enacted the Telecom Act, which allows the
RBOCs and others to enter the long distance market. When RBOCs enter the long
distance market, they may acquire, or take substantial business from, our
customers or us. We cannot assure you that we will be able to compete
successfully with existing competitors or new entrants in our markets. Our
failure to do so would have a material adverse effect on our business, financial
condition and results of operations and the value of our securities. See
"-- Risks Related to Technological Change" and "Business -- Regulation."
 
     On February 15, 1997, the United States Trade Representative designate
announced that an agreement had been reached with World Trade Organization
countries to open world telecommunications markets to competition. The
agreement, known as the WTO Basic Telecommunications Services Agreement or the
WTO Agreement, became effective on February 5, 1998. The WTO Agreement provides
U.S. companies with foreign market access for local, long distance, and
international services, either on a facilities basis or through resale of
existing network capacity. The WTO Agreement also provides that U.S. companies
can acquire, establish or hold a significant stake in telecommunications
companies around the world. Conversely, foreign companies will be permitted to
enter domestic U.S. telecommunications markets and acquire ownership interest in
U.S. companies. On June 4, 1997, the Federal Communications Commission or the
FCC initiated a rulemaking proceeding to bring FCC policies and procedures into
conformance with the WTO Agreement. On
                                       26
<PAGE>   27
 
November 26, 1997, the FCC released an order on foreign entry, although a
petition for reconsideration of the order is pending. While the outcome of the
petition for reconsideration cannot be predicted, foreign telecommunications
companies could also be significant new competitors to our customers or us. See
"Business -- Industry Overview," "Business -- Private Line Services" and
"Business -- Long Distance Switched Services."
 
DEVELOPMENT RISKS OF THE ATM-FRAME RELAY TRANSMISSION BUSINESS
 
     We began offering ATM-Frame Relay and other data transmission services
during the first quarter of 1997. Although we have not yet generated significant
revenues from this business, we believe that Internet related services and data
transmission services present a promising opportunity for us. To succeed in
providing these services, we must compete with AT&T, Sprint, MCIWorldCom and
other large competitors. In addition, we expect that we will need to continue to
upgrade our network (in advance of related revenues) to be competitive.
Providing Internet and data transmission services involves technical issues with
which we have limited experience. In addition, providing these services must be
successfully integrated with our existing businesses. Unless we are able to
successfully compete in providing these services, we will not realize a return
on our investment in data switches and other equipment and we will not benefit
from the growth, if any, in demand for these services. A failure to successfully
compete in Internet related services and data transmission services could have a
material adverse effect on our business, financial condition and results of
operations and the value of our securities.
 
RECENT LEGISLATION AND REGULATORY UNCERTAINTY
 
     Some of our operations are regulated by the FCC under the Communications
Act of 1934. In addition, some of our businesses are regulated by state public
utility or public service commissions. Regulatory or interpretive changes in
existing legislation or new legislation that affects our operations could have a
material adverse effect on our business, financial condition and results of
operations. In 1996 the federal government enacted the 1996 Telecom Act, which,
among other things, allows the RBOCs and others to enter the long distance
business. Entry of the RBOCs or other entities such as electric utilities and
cable television companies into the long distance business may have a negative
impact on our customers or us. We anticipate that some entrants will be strong
competitors because, among other reasons, they may:
 
     - be well capitalized;
 
     - already have substantial end-user customer bases; and/or
 
     - enjoy cost advantages relating to local loops and access charges.
 
     The addition of strong competitors into the switched long distance business
could have a material adverse effect on our business, financial condition and
results of operations.
 
     In July 1997, the United States Court of Appeals for the Eighth Circuit
invalidated key portions of the FCC's interconnection order, which the FCC
adopted to facilitate local exchange competition. On January 25, 1999, the
Supreme Court overturned the Eighth Circuit's ruling and reinstated most aspects
of the FCC's interconnection rules. The Supreme Court remanded to the FCC one
issue relating to interconnection, which will likely delay the further emergence
and development of local exchange competition. Consequently, neither our
customers nor we may benefit as quickly from the lower access costs that might
have resulted if competition in providing local access services was not delayed.
Further, the FCC issued orders relating to universal service funding by
interstate telecommunications carriers, and to the access charges we and our
customers are required to pay to LECs. The FCC's access charge reform order was
recently affirmed after a lengthy appeal. The FCC has since sought additional
comments on access charge reform, but the outcome of this and any future FCC
proceedings are impossible to predict. In addition, the Telecom Act provides
that state proceedings may, in certain instances, determine access charges that
our customers and we are required to pay to the LECs. These proceedings could
result in rate increases that could have a material adverse effect on our
customers and us. See "Business -- Industry Overview;" and
"Business -- Regulation."
 
                                       27
<PAGE>   28
 
     Some members of Congress are dissatisfied with the Telecom Act, and in
particular with the development of local exchange competition, RBOC re-entry
into in-region long distance markets and universal service funding. It is
possible that additional legislation will also be introduced to further amend
the Telecom Act. However, it is impossible to predict the scope or likelihood of
success of any possible further legislation, or the potential impact of any
possible further legislation.
 
RISKS RELATING TO MARCA-TEL
 
     Marca-Tel has put further investment in new fiber routes on hold and
reduced its scope of operations, awaiting more suitable regulatory and market
conditions. At the present time, we do not anticipate significant additional
funding to Progress for investment in Marca-Tel until the regulatory and market
conditions in Mexico improve. We are not obligated to continue to fund Progress
or Marca-Tel. Our existing indentures and our $600 million credit facility
contain significant limitations on the amount we may invest in Marca-Tel and
other non-majority owned entities. Although Marca-Tel amended its credit
agreement in February 1999 allowing it to defer certain payments until June
1999, we cannot assure you that Marca-Tel will be able to make payments at that
time or at any time in the future. A default such as this could result in the
foreclosure of the creditor's security interest in all of Marca-Tel's assets. If
that occurs, our investment in Marca-Tel could be further diluted or entirely
lost.
 
POTENTIAL LIABILITY OF INTERNET ACCESS PROVIDERS
 
     We provide services to on-line service providers and Internet access
providers. We also own approximately 10.2 million shares of common stock of
PSINet, an Internet access provider. The law governing the liability of on-line
services providers and Internet access providers for information carried on or
disseminated through their networks is unsettled. Under the 1996 Telecom Act,
both civil and criminal penalties can be imposed for the use of interactive
computer services for the transmission of certain indecent or obscene
communications. However, some of these provisions were recently held
unconstitutional by the Supreme Court. Other provisions of the Communications
Decency Act have been challenged in court proceedings which are ongoing. In
addition, Congress recently passed the Child Online Protection Act, which
currently is subject to a temporary injunction. Nonetheless, many states have
adopted or are considering adopting similar requirements, and the
constitutionality of these state requirements remains unsettled. In addition,
several private lawsuits have been filed seeking to hold Internet access
providers accountable for information which they transmit. In one case, the
court ruled that an Internet access provider is not directly liable for copies
that are made and stored on its computer but may be held liable as a
contributing infringer where, with knowledge of the infringing activity, the
Internet access provider induces, causes or materially contributes to another
person's infringing conduct. As the law in this area develops, potential
imposition of liability on Internet access providers for information carried on
or disseminated through their networks could materially change the way they
conduct business. To avoid undue exposure to liability, Internet access
providers could be compelled to engage in burdensome investigation of subscriber
materials or even discontinue offering the service altogether.
 
RISKS RELATING TO SWITCHED SERVICES
 
     Switched services resellers account for a substantial portion of our long
distance switched services revenue. A substantial portion of revenue is derived
from a limited number of switched services resellers. Sales to switched services
resellers generate low margins for us. In addition, these customers frequently
choose to move their business to other carriers based solely on small price
changes and generally are perceived to have a high risk of payment delinquency
or non-payments. Our service credits and bad debt in the past have been as
follows:
 
<TABLE>
<CAPTION>
                   SERVICE CREDIT AND      PERCENT OF
    PERIOD       BAD DEBT (IN MILLIONS)   TOTAL REVENUE
    ------       ----------------------   -------------
<S>              <C>                      <C>
Year Ended
  1996.........          $ 6.3                 2.2%
Year Ended
  1997.........          $20.8                 4.0%
Year Ended
  1998.........          $55.1                 8.2%
</TABLE>
 
                                       28
<PAGE>   29
 
     We seek to control service credits and bad debts by implementing procedures
to improve our billing accuracy and control our credit exposure. Any significant
increase in service credit and bad debt expense as a percentage of revenues
could have a material adverse effect on our business, financial condition and
results of operations.
 
RISKS RELATED TO TECHNOLOGICAL CHANGE
 
     The market for our telecommunications services is characterized by rapidly
changing technology, evolving industry standards, emerging competition and
frequent new product and service introductions. We cannot guarantee that we will
successfully identify new service opportunities and develop and bring new
services to market. There is also a risk that fundamental changes in the way
telecommunications services are marketed and delivered will occur. We assume
that technology such as ATM-Frame Relay protocols and using fiber optic or
copper-based telecommunications infrastructures will continue to be the primary
protocols and transport infrastructure for data communications services. Future
technological changes, including changes related to the emerging wireline and
wireless transmission and switching technologies, could have a material adverse
effect on our business, results of operations, and financial condition. Our
pursuit of necessary technological advances may require substantial time and
expense. We cannot be certain that we will succeed in adapting our
telecommunications services business to alternate access devices, conduits and
protocols.
 
     In addition, recent technological advances with the potential to greatly
expand the capacity of existing and new fiber optic cable, which could greatly
increase supply, could have a material adverse effect on our business, financial
condition, and results of operations and the value of our securities.
 
STOCKHOLDER RIGHTS PLAN AND OTHER CHANGE IN CONTROL IMPEDIMENTS
 
     In September 1998, we adopted a stockholder rights agreement that permits
owners of our common stock to purchase shares of common stock at one-half of its
fair market value in limited instances. Each share of common stock is entitled
to one right. These rights are exercisable if a person or group acquires 20% or
more of our common stock or announces a tender offer for 20% or more of our
common stock. The rights are also exercisable if a stockholder currently holding
more than 20% of our outstanding stock acquires any additional shares of our
common stock. Our stockholder rights agreement may prevent or deter acquisitions
of more than 20% of our common stock and ultimately an acquisition of IXC. In
addition, certain covenants in our debt and preferred securities may require us
to offer to repurchase or adjust the conversion price of such securities in the
event of a change in control of IXC. These covenants may prevent, deter or
adversely affect the value of our common stock in connection with an acquisition
of IXC involving a change in control.
 
CONCENTRATED OWNERSHIP OF CONTROL GROUP
 
     At December 31, 1998, Trustees of General Electric Pension Trust
beneficially owned approximately 26.5% of our outstanding common stock, Grumman
Hill Investments, L.P., Richard D. Irwin and their affiliates together
beneficially owned approximately 9% of our outstanding common stock, and one
director, one executive officer and their affiliates beneficially owned
approximately 10.8% of our outstanding common stock. As a result, certain of
these stockholders, if they act with others so as to constitute a majority,
generally would be able to elect a majority of directors elected by the holders
of our common stock and exercise control over our business, policies and
affairs, and would have the power to approve or disapprove most actions
requiring stockholder approval without the approval of minority stockholders.
 
ITEM 2. PROPERTIES
 
     The principal properties we own consist of: (i) certain portions of our
network completed or under construction; and (ii) the coast-to-coast microwave
system, consisting of microwave transmitters, receivers, towers and antennae,
auxiliary power equipment, transportation equipment, equipment shelters and
miscellaneous components. Generally, fiber optic system and microwave relay
system components are standard commercial products available from a number of
suppliers. The use of all these assets are shared by all of our segments of
business.
 
                                       29
<PAGE>   30
 
     Our principal offices are located in Austin, Texas, comprising two separate
office leases. In 1999, we added a third office space in Austin. We lease these
three offices pursuant to the terms of the respective leases which expire at
different times varying from January 2002 to December 2004. In addition, we
sublease former office space in two other locations in Austin. The sublease
payments satisfy our monthly rental obligations under the original leases. We
also lease approximately 65 other office spaces for sales and administration of
our switched long distance and data/Internet businesses. We believe that
existing office sites are adequate for current operations and that as we grow we
will be able to locate and lease or acquire additional future office space at
market rates.
 
     We lease sites for our switches in various metropolitan locations under
lease agreements that expire between 2000 and 2005. Five of our nine voice
switches are leased under capital leases from DSC Finance Corporation over a
term of 5 years. In order to build our network we have also entered into
approximately 345 site, conduit, right-of-way and storage leases. These sites
are located all across the United States. These facilities generally are leased
under annual terms ranging from 5 to 25 years.
 
ITEM 3. LEGAL PROCEEDINGS
 
     We are involved in various legal proceedings, all of which have arisen in
the ordinary course of business and some of which are covered by insurance. In
the opinion of our management, none of the claims relating to such proceedings
are likely to have a material adverse effect on our financial condition or
results of operations.
 
ITEM 4. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS
 
     Not applicable.
 
                                       30
<PAGE>   31
 
                                    PART II
 
ITEM 5. MARKET FOR THE REGISTRANT'S COMMON EQUITY AND RELATED STOCKHOLDER
MATTERS
 
PRICE RANGE OF COMMON STOCK
 
     Our common stock is quoted on the Nasdaq National Market (the "NNM") under
the trading symbol "IIXC." The following table sets forth, on a per share basis,
the high and low closing sale prices for the common stock for the periods
indicated as reported by the NNM.
 
<TABLE>
<CAPTION>
                                                                PRICE RANGE
                                                              ----------------
                                                               HIGH      LOW
                                                              ------    ------
<S>                                                           <C>       <C>
Fiscal Year 1997
  First Quarter.............................................  $36.25    $18.75
  Second Quarter............................................   27.88     17.00
  Third Quarter.............................................   33.00     19.50
  Fourth Quarter............................................   40.13     29.38
Fiscal Year 1998
  First Quarter.............................................   60.38     30.50
  Second Quarter............................................   57.63     36.88
  Third Quarter.............................................   54.25     24.50
  Fourth Quarter............................................   40.25     17.63
</TABLE>
 
     As of March 19, 1999, there were approximately 7,945 common stockholders.
 
DIVIDEND POLICY
 
     We have never paid any cash dividends on our common stock and we do not
expect to pay cash dividends on our common stock in the near future. The terms
of the $600 million credit facility we entered into in October 1998 restrict the
payment of dividends. Additionally, no dividends may be paid on the common stock
until all dividends are paid in full on our 7 1/4% Convertible Preferred Stock,
our 12 1/2% Exchangeable Preferred Stock, and our 6 3/4% Convertible Preferred
Stock (collectively, the "Preferred Stock"), as follows:
 
     - Dividends on the 7 1/4% Convertible Preferred Stock are payable quarterly
       in cash at an annual rate of 7 1/4% of the aggregate liquidation
       preference (which amounted to $107.5 million at December 31, 1998). On
       March 31, 1999, we have the option to pay dividends in additional shares
       of 7 1/4% Convertible Preferred Stock.
 
     - Dividends on our 12 1/2% Exchangeable Preferred Stock are payable
       quarterly at the annual rate of 12 1/2% of the aggregate liquidation
       preference (which amounted to $354.9 million at December 31, 1998,
       including accrued dividends of approximately $5.5 million). Through
       February 15, 2001, we have the option to pay dividends in additional
       shares of 12 1/2% Exchangeable Preferred Stock. Dividends are payable in
       cash thereafter.
 
     - Dividends on our 6 3/4% Convertible Preferred Stock are payable quarterly
       in cash at the annual rate of 6 3/4%. If we are prohibited from paying
       dividends in cash under the terms of our debt agreements, then we may pay
       dividends in common stock valued at 95% of the average price of the
       common stock for 5 business days prior to the dividend payment date.
 
     Our ability to pay dividends on shares of Preferred Stock is limited by the
terms of the $600 million credit facility. We intend to retain future operating
cash flow, if any, to finance our operations and fund the growth of our
business. Any payment of future dividends on our common stock will be at the
discretion of our Board of Directors and will depend upon, among other things,
our earnings, financial condition, capital requirements, level of indebtedness,
contractual and legal restrictions with respect to the payment of dividends and
other factors our Board of Directors deems relevant.
 
                                       31
<PAGE>   32
 
ITEM 6. SELECTED FINANCIAL DATA
 
     The following table sets forth our selected historical financial data. The
historical financial data has been derived from the audited Consolidated
Financial Statements. The audited financial statements have been restated to
include the combined results of operations of Eclipse, which was acquired in
June 1998 in a transaction accounted for as a pooling of interests. The selected
historical financial data set forth below is qualified in its entirety by, and
should be read in conjunction with, "Management's Discussion and Analysis of
Financial Condition and Results of Operations," "Business" and our Consolidated
Financial Statements, related notes thereto and other financial information
included herein.
 
<TABLE>
<CAPTION>
                                                      YEAR ENDED DECEMBER 31,
                                     ----------------------------------------------------------
                                       1994        1995        1996        1997         1998
                                     --------    --------    --------    --------    ----------
                                                       (DOLLARS IN THOUSANDS)
<S>                                  <C>         <C>         <C>         <C>         <C>
STATEMENT OF OPERATIONS DATA:
  Net operating revenue............  $128,982    $154,714    $281,967    $521,617    $  668,568
  Operating income (loss)..........    16,745       3,380     (19,944)    (49,540)      (30,809)
  Income (loss) before
     extraordinary item............     6,732      (2,434)    (44,237)    (99,164)      (95,504)
  Extraordinary gain (loss)........     2,298      (1,747)         --          --       (66,952)
  Net income (loss)................     9,030      (4,181)    (44,237)    (99,164)     (162,456)
  Basic and diluted income (loss)
     per share before extraordinary
     item..........................      0.25       (0.15)      (1.52)      (3.47)        (4.28)
     Extraordinary item............      0.09       (0.07)         --          --         (1.87)
     Net income (loss).............      0.34       (0.22)      (1.52)      (3.47)        (6.15)
     Weighted average basic and
       diluted shares..............    26,628      26,793      30,277      34,777        35,868
 
BALANCE SHEET DATA:
  Cash and cash equivalents........  $  6,709    $  8,375    $ 64,090    $155,855    $  264,826
  Total assets.....................   122,742     365,738     485,335     968,872     1,748,237
  Total debt and capital lease
     obligations...................    70,563     302,794     305,578     320,747       693,000
  Redeemable preferred stock.......        --          --          --     403,368       447,858
  Stockholders' equity (deficit)...    23,593      23,480      75,281     (18,671)      (72,546)
 
OTHER FINANCIAL AND OPERATIONS
  DATA:
  EBITDA(1)........................  $ 29,675    $ 22,542    $ 15,983    $ 23,190    $   90,732
  Capital expenditures.............     7,087      23,670     136,976     315,853       476,382
</TABLE>
 
- ---------------
(1) EBITDA is operating income (loss) plus depreciation, amortization, and
    merger-related costs. We believe that EBITDA is used by certain investors as
    one measure of a company's historical ability to service its debt. EBITDA is
    not a measurement determined in accordance with generally accepted
    accounting principles ("GAAP"), should not be considered in isolation or as
    a substitute for measures of performance prepared in accordance with GAAP,
    and is not necessarily comparable with similarly titled measures for other
    companies.
 
ITEM 7. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
OF OPERATIONS
 
OVERVIEW
 
     We are a leading provider of data and voice telecommunications transmission
services. Our coast-to-coast fiber optic network contained approximately 9300
fiber route miles at year-end 1998. Additions to this network continue to be
constructed. Subject to the availability of capital, we plan on having
approximately 16,400 fiber route miles by the end of 1999. We provide 3
principal products through both wholesale and retail distribution channels. We
lease dedicated circuits, or private lines, to other companies for the
transmission of data and
 
                                       32
<PAGE>   33
 
voice. We transmit long distance switched services through our switches.
Finally, we are an Internet backbone provider that also provides ATM-Frame
Relay-based switched data and other Internet-related services.
 
     In February 1999, we announced that we are considering various strategic
alternatives to create advanced, diversified products and services and the scale
to provide complete voice, data and Internet solutions to a broad customer base.
Alternatives under consideration include many possibilities, from sale or swaps
of fiber to joint ventures or a combination of the company with another company.
To review some of the alternatives that have been initiated by the company or by
others, we have retained Morgan Stanley for assistance.
 
  Private Line Business
 
     This business represented 33.7%, 31.0%, and 35.4% of our revenue in 1998,
1997, and 1996, respectively. Our service agreements with customers are
generally either capacity IRUs where large up-front payments are received, or
leases of capacity which provide for monthly payments due in advance on a
fixed-rate per circuit basis. Contracts are priced according to the capacity,
the length of the circuit used and the term of the contract. This business is
becoming increasingly competitive as other carriers build and expand their
networks. This year, we leased transmission capacity to over 275 customers.
 
     The largest component of our cost of services in the private line business
is the expense of leasing off-net capacity from other carriers to meet specific
customer needs, which we cannot currently meet with our network due to capacity
or geographic constraints. In the normal course of business we also enter into
exchange agreements with other carriers. In these agreements, we exchange excess
fiber or capacity on our network for fiber or capacity on the other carriers'
networks. These exchange agreements generally do not provide for cash payments
to be made, but rather allow us to reduce the cash payments we must make for
off-net capacity from other carriers. Some of the original exchanges of fiber
for capacity are accounted for at the fair value of the capacity exchanged, as
non-cash revenue and expense in equal amounts over the term of the agreements.
In 1998, 1997 and 1996 we recorded revenue and expense of $19.1 million, $14.0
million and $14.0 million, respectively, relating to such exchanges.
 
  Long Distance Switched Services Business
 
     This business represented approximately 62.0%, 68.9% and 64.6% of our total
revenue in 1998, 1997, and 1996, respectively. We sell these services on a
per-call basis, charging by the minutes-of-use ("MOU"). Payment for these
services is due monthly after services are rendered. Our rates for calls vary
with the duration of the call, the day and time of day the call was made. The
rate also depends on whether the call had an intrastate, interstate or
international destination. We provide these services on both a wholesale and a
retail basis. On a wholesale basis, we sell to resellers of long distance
services. On a retail basis, we sell to small and medium size businesses. At
year-end 1998, we had over 113,000 long distance customers.
 
     Our main source of costs in the long distance switched services business is
access costs with LEC's and other providers, and the expense of leasing off-net
capacity from other carriers. The LEC access charges have both a usage and a
fixed-rate component and vary according to the LATA in which calls originate and
terminate. The usage portion of these costs has decreased dramatically in the
past eighteen months, driven by FCC-mandated reductions. However, monthly fixed
costs associated with LEC local office trunking have offset a significant
portion of these savings. Long distance network leasing costs are incurred as we
lease capacity to carry traffic where our network does not reach or is already
running at or near capacity. We expect these costs to decline as we transfer
traffic onto newly constructed routes of our own network, however; since we do
not intend to expand our network to all areas of the United States, we will
continue to lease capacity from other carriers. The long distance switched
services business is highly competitive, resulting in a continuing reduction of
wholesale and retail rates over the last several years.
 
  Data/Internet Business
 
     In 1997 we began providing ATM-Frame Relay-based switched data services in
order to capitalize on the growing demand for Internet and electronic data
transfer services. In 1998, we acquired four Internet-based businesses that
allow us to offer a full complement of Internet-related services including
Internet access,
                                       33
<PAGE>   34
 
collocation of Web servers, network systems integration solutions and dial-up
services on both a wholesale and retail basis. Payment for these services is
generally monthly after services are performed for recurring charges and on a
completion of project basis for project related services. In 1998 this business
represented approximately 1.4% of our total revenue. At year-end we had over
36,000 data/Internet customers.
 
     Our main source of costs in the data/Internet business is the expense of
leasing off-net capacity from other carriers to meet specific customer needs,
where our network is not available. We expect these costs to decline as a
percentage of revenue, but increase in absolute terms. As we expand our network,
more of this capacity will be transferred to our network, but we expect the
rapid rise in this business will continue to drive the need for leasing capacity
where our network is not available.
 
  Other Revenue
 
     During the third and fourth quarters of 1998, we recorded revenue of $19.8
million from the sale of options in fibers that were jointly owned with another
carrier. This revenue was reported, net of our basis in the options, as "other
revenue" and is excluded from our segment results.
 
  Capital Expenditures
 
     We have spent significant amounts of capital to develop our coast-to-coast
network. We spent $476.4 million for capital expenditures during 1998, and we
estimate that we will spend over $600 million in 1999. We are continuing to
expand our network. We expect to continue making substantial capital
expenditures for fiber expansion and the deployment of additional optronics and
voice and data switches to provide capacity for revenue growth.
 
  Acquisition Transactions
 
     In June 1998 we consummated the acquisition of Eclipse, a provider of long
distance services to businesses and association programs, agents and other long
distance carriers. The transaction was accounted for as a pooling-of-interests
in which the Eclipse shares were exchanged for approximately 4.1 million shares
of our common stock.
 
     During March 1998 through June 1998, we acquired four Internet businesses
to expand our data/Internet segment. We acquired Data Place, a company that
supplies businesses with complete network systems integration solutions. We
acquired NTR, a company that offers custom back office support to wholesale
customers and Internet dial-up services to retail customers. We acquired NEI, an
Internet consulting company. Our final acquisition was SMARTNAP, which provides
aggregated Internet access, collocation of Web servers and routers and end-site
managed connectivity. None of these acquisitions were material to our revenue
and net income.
 
     In January 1999 we entered into an agreement to acquire Coastal. Coastal is
a long distance provider focusing on small business customers. This anticipated
acquisition will be accounted for as a purchase and is valued at approximately
$100 million, approximately $25 million of which is payable in shares of our
common stock. This transaction is conditioned upon regulatory approval and
certain other events and is anticipated to close in mid-1999.
 
  Marca-Tel
 
     Through December 31, 1998, we had invested $44.8 million in Progress
including $14.9 million on behalf of Westel. In 1998 Westel agreed to give us a
note for $14.9 million to repay us for certain contributions previously made to
Progress on Westel's behalf. The balance of the note receivable from Westel at
December 31, 1998, was $9.4 million. The final note payment is due in May 1999
and is secured by a portion of Westel's ownership in Progress.
 
     We account for Progress and Marca-Tel using the equity method of
accounting. Through the third quarter of 1998, we recognized our share of losses
from Progress based on the relative amount of funds we contributed to Progress
compared to Westel. Beginning with the fourth quarter of 1998, the sum of our
                                       34
<PAGE>   35
 
remaining investment in Marca-Tel and the promissory note from Westel was below
zero due to the amount of losses we previously recorded; therefore, we suspended
recognition of losses from Marca-Tel. We will continue to suspend recognition of
losses until Marca-Tel begins reporting net income and all suspended losses have
been recovered.
 
     In September 1995 Marca-Tel entered into an agreement with a vendor to
construct a portion of Marca-Tel's telecommunications network in Mexico and to
provide significant financing for such construction and related equipment and
fiber purchases. The vendor has been granted security interests in all of
Marca-Tel's assets, including the telecommunications network, and the owners of
Marca-Tel, including Progress, have pledged their interests in Marca-Tel to
collateralize payment to the vendor. As of December, 1998, approximately $77.1
million was owed by Marca-Tel to the vendor. In February 1999 Marca-Tel amended
its credit agreement with the vendor and agreed to increase the vendor's
ownership interest in Marca-Tel. This decreased our indirect ownership to 24%.
 
  Investment in Storm
 
     In 1997 we formed Storm, a joint venture with Telenor AS, the Norwegian
national telephone company. In mid-1998, Storm began to provide
telecommunication services to carriers and resellers in Europe. The joint
venture is owned 40 percent by us, 40 percent by Telenor, and 20 percent by
Clarion Resources Communications Corporation, a U.S.-based telecommunications
company in which Telenor owns a controlling interest. We account for this
investment using the equity method.
 
  Investment in Unidial Communications Services, LLC
 
     In December 1997, we formed Unidial Communications Services, LLC, a joint
venture with Unidial Communications. This joint venture has a direct sales force
to market and sell the products of both partners over our network. The joint
venture is owned 80 percent by Unidial and 20 percent by us. At December 31,
1998, we had invested $10 million in this joint venture. In February 1999 we
invested an additional $4 million in this joint venture. After this initial $14
million funding, we are not required to fund any future investments to the joint
venture, but to the extent Unidial funds such investments alone, our interest in
the joint venture may be diluted. We account for this investment using the
equity method.
 
  PSINet Transaction
 
     In February 1998, we consummated an agreement to provide PSINet an IRU in
10,000 miles of OC-48 transmission capacity on our network over a 20-year period
in exchange for approximately 10.2 million shares of PSINet common stock with a
guaranteed value of $240 million within two years of providing PSINet of all the
capacity. In January 1999 the PSINet stock exceeded the guaranteed $240 million
threshold, thereby eliminating the requirement of PSINet to make additional
payments to us. Upon delivery of the transmission capacity to PSINet, we will
begin to receive a maintenance fee, which, as the full capacity is delivered, is
expected to increase to approximately $11.5 million per year. We initially
accounted for our investment in PSINet using the equity method and recorded our
share of PSINet's operating losses. Beginning with the third quarter of 1998,
our share of PSINet's stock was below 20% and we no longer had an officer with a
seat on PSINet's board of directors. As a result, we began accounting for this
investment using the cost method. The market value of the shares on March 30,
1999, was $448.2 million.
 
  Investment in Applied Theory
 
     In May 1998 we acquired a 34% interest in the New York-based ISP, Applied
Theory. Applied Theory was formed in 1996 to provide high quality Internet
services for the New York state research and education community. In 1998 we
invested almost $13 million in Applied Theory. This investment is being
accounted for under the equity method.
 
                                       35
<PAGE>   36
 
  Investment in DCI.
 
     We obtained an investment in DCI in November 1998, in consideration for a
note from one of our customers which was also a vendor of DCI. We acquired 4.25
million common shares of DCI. DCI is an international provider of telephone
services, including long distance, prepaid telephone cards and Internet
services. DCI has an option to repurchase all 4.25 million shares of its common
stock from us through April 1, 1999, at a price of approximately $18 million. In
the event the option is not exercised there will be an adjustment to the number
of shares we own on June 1, 1999, if the 15-day volume weighted average price of
the DCI shares is outside the range of $4.20 to $5.88. After this adjustment, if
any, we will own common stock of DCI with a minimum value of approximately $18
million and a maximum value of $22 million. We account for this investment using
the cost method.
 
  Fiber Sales and IRUs
 
     We have sold fiber and capacity IRUs. IRU sales are recorded as unearned
revenue and are included in other current and other non-current liabilities in
the accompanying consolidated balance sheets, when the fiber or capacity is
accepted by the customer. Revenue is recognized over the terms of the related
agreements. In 1998, we received approximately $128.5 million in cash and $105.2
million in notes receivable from these sales but recognized only $8.9 million as
revenue.
 
  Financing Transactions
 
     In July 1996, we raised gross proceeds of approximately $83.3 million
(before deducting certain expenses) through an initial public offering of our
common stock and $12.5 million from a private placement of our common stock.
 
     In April 1997, we raised gross proceeds of $100 million (before deducting
discounts and certain expenses) through the sale of our 7 1/4% Convertible
Preferred Stock.
 
     In August 1997, we raised gross proceeds of $300 million (before deducting
discounts and certain expenses) through the sale of our 12 1/2% Exchangeable
Preferred Stock.
 
     In March and April, 1998 we raised gross proceeds of approximately $155
million (before deducting discounts and certain expenses) through the sale of
6 3/4% Convertible Preferred Stock.
 
     In April 1998 we raised gross proceeds of $450 million (before deducting
discounts and certain expenses) from the sale of 9% Senior Subordinated Notes.
Part of these proceeds ($342.7 million) was used to pay off the 12 1/2% Senior
Notes issued in October 1995. In conjunction with that early redemption of the
12 1/2% Senior Notes, an extraordinary charge of $67 million, net of related tax
benefit, was recorded.
 
     In October 1998 we entered into a $600 million credit facility, including a
$150 million revolving loan capacity, a $200 million term loan facility and an
uncommitted special purpose loan facility of $250 million. The $200 million term
loan was drawn down during the fourth quarter of 1998.
 
                                       36
<PAGE>   37
 
QUARTERLY RESULTS OF OPERATIONS
 
     The following table presents certain unaudited quarterly financial
information for each of our quarters in 1997 and 1998. This information was
prepared on the same basis as the audited financial statements appearing
elsewhere in this Form 10-K. The table includes the operations of Eclipse for
all periods and all adjustments (which consist only of normal recurring
adjustments) necessary to present fairly the unaudited quarterly results set
forth herein. The operating results for any quarter are not necessarily
indicative of results for any future period. We may experience substantial
fluctuations in quarterly results in the future as a result of various factors,
including customer turnover, variations in the success of our customers'
businesses and price competition.
 
<TABLE>
<CAPTION>
                                                  1997 QUARTER ENDED                           1998 QUARTER ENDED
                                       -----------------------------------------   ------------------------------------------
                                        MAR 31     JUN 30     SEP 30     DEC 31     MAR 31     JUN 30      SEP 30     DEC 31
                                       --------   --------   --------   --------   --------   ---------   --------   --------
                                                           (DOLLARS IN THOUSANDS, EXCEPT PER SHARE DATA)
<S>                                    <C>        <C>        <C>        <C>        <C>        <C>         <C>        <C>
Statement of Operations Data:
Net operating revenue:
  Private line circuits..............  $ 30,869   $ 38,380   $ 41,671   $ 50,650   $ 43,340   $  49,232   $ 61,908     70,878
  Switched long distance.............    76,013     75,318     94,881    113,076    113,767     105,502    110,741     84,395
  Data/Internet......................        --        114        277        368        476       1,201      3,631      3,721
  Other..............................        --         --         --         --         --          --      8,989     10,787
  Net operating revenue..............   106,882    113,812    136,829    164,094    157,583     155,935    185,269    169,781
  Operating expenses:
  Cost of services...................    84,894     90,979    101,035    118,759    107,949     107,593    109,984    107,774
  Operations and administration......    21,983     24,380     28,047     28,350     29,336      29,992     40,094     45,114
  Depreciation and amortization......    10,914     14,559     24,601     19,065     20,152      22,636     34,801     35,997
  Merger related costs...............     3,325         --        302        (36)       (36)      7,681        444       (134)
                                       --------   --------   --------   --------   --------   ---------   --------   --------
    Operating income (loss)..........  $(14,234)  $(16,106)  $(17,156)  $ (2,044)  $    182   $ (11,967)  $    (54)  $(18,970)
                                       ========   ========   ========   ========   ========   =========   ========   ========
    Net loss.........................  $(22,498)  $(27,914)  $(31,172)  $(17,580)  $(17,895)  $(102,507)  $(15,301)  $(26,753)
                                       ========   ========   ========   ========   ========   =========   ========   ========
    Basic and diluted loss per
      share(1).......................  $  (0.67)  $  (0.87)  $  (1.09)  $  (0.84)  $  (0.83)  $   (3.30)  $  (0.85)  $  (1.17)
                                       ========   ========   ========   ========   ========   =========   ========   ========
Other Financial and Operations Data:
  EBITDA(2)..........................  $      5   $ (1,547)  $  7,747   $ 16,985   $ 20,298   $  18,350   $ 35,191   $ 16,893
</TABLE>
 
- ---------------
(1) Basic and diluted loss per share calculations for each of the quarters were
    based on the weighted average number of shares outstanding for each period,
    therefore the sum of the quarters may not necessarily be equal to the full
    year basic and diluted loss per share amount.
 
(2) EBITDA is operating loss plus depreciation, amortization and merger-related
    charges. We believe that EBITDA is used by certain investors as one measure
    of a company's ability to service its debt. EBITDA is not a measurement
    determined in accordance with GAAP, should not be considered in isolation or
    as a substitute for measures of performance prepared in accordance with
    GAAP, and is not necessarily comparable with similarly titled measures for
    other companies.
 
RESULTS OF OPERATIONS
 
  1998 Compared with 1997
 
     Net operating revenue for 1998 increased 28.2% to $668.6 million from
$521.6 million in 1997. This improvement came mainly from increases in private
line revenue and switched long distance revenue. The private line improvement of
$63.8 million was driven by the activation of services relating to a $265
million agreement with a large ISP. The long distance switched services revenue
improvement was driven from both retail and wholesale customers. Wholesale
minutes of use increased from 3.0 billion in 1997 to 4.0 billion in 1998. The
remaining revenue improvement came partially from our data/Internet segment
largely due to the acquisition of the four Internet businesses in mid-1998 and
partially from the sale of options on fiber usage rights that are jointly owned
with another carrier.
 
     Cost of services principally consists of access charges paid to LECs and
transmission lease costs to transmit calls in areas not covered by our network.
Cost of services increased $37.6 million, or 9.5%, to
 
                                       37
<PAGE>   38
 
$433.3 million in 1998. This increase primarily consists of an increase in
transmission lease expense due to our entering into dedicated circuit leases in
advance of the expansion of our network , and higher access costs from increased
minutes of use. Our gross margin, excluding the $19.8 million in other revenue,
improved to 33.2% in 1998 from 24.1% in 1997. This improvement is due to the
large increase in private line revenue, largely carried on our network, and to
the FCC-mandated decreases in access costs that occurred from mid-1997 through
mid-1998. We expect access costs to increase with minutes of use and as a
percentage of revenue as competition drives prices down.
 
     Operations and administration expenses increased 40.7% from 1997 to $144.5
million in 1998. This increase is due to the increased staffing required to
support the larger network and the larger revenue base, particularly in retail
operations. We had significant increases in expanding our information technology
infrastructure, our retail sales infrastructure and the cost of supporting the
expanded network. We anticipate further increases in these costs, in total and
as a percentage of revenue, as we expand our long distance switched services
business and our network.
 
     Depreciation and amortization increased 64.3% to $113.6 million in 1998.
These higher costs are principally the result of more of the expanded network
being placed in service and depreciated throughout 1998 than throughout 1997.
Amortization expense has increased due to the amortization of goodwill relating
to our Internet-related acquisitions in 1998. We expect these costs to continue
increasing in future periods as we continue to invest in equipment and fiber to
support new higher capacity routes.
 
     Interest income increased 84.6% to $14.3 million in 1998 due to the larger
amount of cash on hand in 1998 versus 1997 and due to interest earned on notes
receivable from customers in 1998. Cash on hand was higher during 1998 due to
the sale of the $155 million in 6 3/4% Convertible Preferred Stock in March and
April 1998, the sale of the $450 million of 9% Senior Subordinated Notes in
April 1998, and the draw-down of $200 million of the $600 credit facility in
October 1998, offset by the early redemption of the 12 1/2% Senior Notes in
April 1998.
 
     Interest expense was unchanged at $31.7 million year over year as the
increased outstanding debt was offset by lower interest rates on the 9% Senior
Subordinated Notes and the $600 million credit facility versus the 12 1/2%
Senior Notes that were redeemed in April 1998.
 
     Equity losses from unconsolidated subsidiaries increased 38.6% to $33.0
million in 1998. In 1998 we recorded $15.9 million of losses from our indirect
investment in Marca-Tel. We suspended recognition of losses in the fourth
quarter of 1998 because our investment in Marca-Tel was below zero. We will
continue to suspend recognition of losses until Marca-Tel begins reporting net
income and all suspended losses have been recovered. At the beginning of the
third quarter of 1998 we began accounting for our investment in PSINet using the
cost method because we no longer had significant influence over the financial or
operating policies of PSINet. In 1998 the other joint ventures in which we have
investments all reported losses. In 1997, our only investment with operations
was Marca-Tel. As a result, although the equity losses relating to Marca-Tel
decreased 33.3% in 1998 versus 1997, losses recorded for the other investments,
including PSINet during part of the year, more than offset the Marca-Tel
decrease.
 
     Income tax expense increased $12.6 million to $13.9 million in 1998. This
increase was due to the taxable income created by the IRU transactions in 1998.
This tax increase is mainly related to the alternative minimum tax on
utilization of net operating loss carryforwards and on state income taxes. For
accounting purposes, we do not recognize any tax benefits relating to taxable
losses incurred from 1996 through 1998.
 
     The extraordinary loss of $67.0 million recorded in 1998 relates to charges
associated with the early extinguishment of the 12 1/2% Senior Notes in April
1998. There was no such charge in 1997.
 
     We experienced a net loss applicable to common shareholders of $220.7
million in 1998 versus $120.8 million in 1997. The increased loss is due to the
items identified above, plus an increase of $36.6 million in preferred stock
dividends. The increased dividends in 1998 are due to the preferred stock issued
in 1997 being outstanding for a full year in 1998 plus the partial year impact
of the 6 3/4% Convertible Preferred Stock issued in 1998.
 
                                       38
<PAGE>   39
 
  1997 Compared With 1996
 
     Net operating revenue for 1997 increased 85.0% to $521.6 million from
$282.0 million for 1996. The increase is mainly a result of increased growth of
our long distance switched services business and our private line business. Long
distance switched services revenue increased 97.2% to $359.3 million for 1997
compared to $182.2 million for 1996. Billable wholesale MOUs were 3.0 billion in
1997, compared to 1.1 billion for 1996. Revenue for the private line business
for 1997 increased 61.9% to $161.6 million from $99.8 million for 1996. The
private line increase in revenue correlates with the additional fiber capacity
available on our network.
 
     Cost of services for 1997 increased 103.0% to $395.7 million from $194.9
million for 1996. The increase resulted mainly from additional leases for
transmission capacity supporting the private line and switched long distance
services businesses, MOUs provided by other carriers; and access charges paid to
LECs in connection with the increased long distance switched services revenue.
Cost of services increased faster on a percentage basis than revenue principally
because switched long distance services revenues generate substantially lower
gross margins than private line revenue and we experienced a larger increase in
the switched long distance revenue than the private line revenue.
 
     Operations and administration expenses for 1997 increased 44.5% to $102.8
million from $71.1 million in 1996. This increase is primarily the result of
employee costs and other operating expenses associated with the growth in our
network.
 
     Depreciation and amortization for 1997 increased 92.4% to $69.1 million
from $35.9 million for 1996. The increase is primarily the result of
depreciation related to the expanded network size in 1997.
 
     Interest income for 1997 decreased from $10.2 million for 1996 to $7.8
million as proceeds from the 1996 and 1997 debt and equity placements were used
to construct our network and operate our business. The decrease from 1996 was
offset partially by the interest earned on the proceeds of the sale of $100.0
million of the 7 1/4% Convertible Preferred Stock in April 1997 and $300.0
million of 12 1/2% Exchangeable Preferred Stock in August 1997.
 
     Interest expense decreased from $37.6 million in 1996 to $31.7 million in
1997. The decrease is primarily the result of additional capitalization of
interest related to the fiber network construction.
 
     Equity in losses of unconsolidated subsidiaries for 1997 were $23.8 million
compared to $2.0 million in 1996. These losses primarily relate to our share of
losses in Marca-Tel, which began operations during the first quarter of 1997,
while continuing to complete its network construction. At December 31, 1997, the
net carrying value of the Mexican joint venture investment was $11.6 million.
 
     Income tax expense for 1997 was $1.4 million compared to a benefit of $5.9
million for 1996. The increase occurred because we recognized tax benefits
related to the favorable resolution of federal income tax examinations in 1996.
For accounting purposes, we did not recognize any tax benefits relating to
losses incurred during both 1996 and 1997.
 
     We experienced a net loss applicable to common shareholders of $120.8
million for 1997 compared to $46.0 million for 1996 as a result of the factors
discussed above and the increase in preferred stock dividends in 1997. The
increase in preferred stock dividends of $19.9 million is the result of issuing
of the 7 1/4% Convertible Preferred Stock in April 1997 and the 12 1/2%
Exchangeable Preferred Stock in August 1997.
 
SEGMENT INFORMATION
 
     In accordance with Financial Accounting Standards Board Statement Number
131, we began reporting our results by segments in 1998. Historically, we have
viewed ourselves as operating in the private line and switched long distance
industries, with a common network and administrative, financing and investing
functions supporting both businesses. We look at both the revenue and cost of
services of both of these businesses, as well as our growing data/Internet
business. Assets (other than accounts receivable) and liabilities, sales,
general and administrative expenses, and financing and other costs are
associated with supporting all businesses and therefore are not considered to
relate to any one segment.
 
                                       39
<PAGE>   40
 
     Current and prior year segment information includes the operations of
Eclipse, which we acquired in a transaction accounted for as a pooling of
interests.
 
  Private Line
 
     Private line revenue increased to $225.4 in 1998 million from $161.6
million in 1997. This increase was mainly due to the impact of the $265 million
ISP contract that started in mid-1998. Cost of service for this segment grew
18.0 % in 1998 as we continued to lease off-net transmission capacity in advance
of completing our network. Despite this growth in transmission lease expense,
gross profit for private line improved to 61.9% of revenue from 55.0% during the
prior year. This increase occurred mainly because a significant portion of the
traffic from the ISP contract occurred on our network. Our largest private line
customer, MCIWorldCom, accounted for approximately 19.4% of our 1998 private
line revenue.
 
  Switched Long Distance Service
 
     Revenue in this segment increased 15.3% in 1998 to $414.4 million from
$359.3 million in 1997. This increase came despite a reduction in minutes of use
by Excel, which renegotiated its contract from a switched service contract to a
higher-margin, private line contract. This improvement was due to increased
usage as rates continued to decline with competition. Excel, our largest long
distance customer, accounted for approximately 18.2% of the switched long
distance revenue in 1998. Gross profit for this segment increased 98.8% over
1997 to $80.3 million. This improvement was largely due to a reduction in access
costs during both 1997 and 1998 mandated by the FCC. The 1998 reduction in
access costs was partially offset by an increase in tandem-trunking charges
implemented in July 1998.
 
  Data/Internet Services
 
     In 1998 this segment's revenue increased to $9.0 million from $.8 million
in 1997. This improvement was due to the impact of the Internet-related
acquisitions we made during 1998 and the increasing demand for Internet
services. Despite the year-over-year rise in revenue, this segment still has not
generated the revenue necessary to cover its cost of services. As a result, the
gross margin loss for the segment increased to a negative $4.4 million from a
negative $2.9 million in 1997.
 
LIQUIDITY AND CAPITAL RESOURCES
 
     Prior to 1996 we relied on cash flows from the operations of our private
line business to provide needed capital. Since 1996, we have needed significant
additional capital to finance the expansion of our network. This capital has
been raised primarily through the issuance of debt and equity securities as well
as through sales of IRUs in fibers or capacity on our network.
 
     Cash provided by operating activities was $202.3 million for the year ended
December 31, 1998, compared to $21.8 million in 1997. This increase was
primarily due to payments received for the sale of IRUs, other operating
revenue, and improved operations in the private line and switched long distance
businesses. We expect cash provided by operations to be positive going forward,
fueled by the sale of capacity IRUs and periodic operating results.
 
     Cash used in investing activities for 1998 was $522.9 million compared to
$302.4 million for 1997. The increase is primarily due to higher capital
expenditures related to expanding our network. The remaining increase in cash
used for investing activities was due to funding acquisitions and investments in
unconsolidated subsidiaries. We expect that capital expenditures will continue
to require a significant amount of cash through the end of fiscal year 1999 and
thereafter.
 
     Cash provided by financing activities increased $58.6 million as net
proceeds from debt and equity financing increased by $442.7 million and more
than offset an increase of $356.3 million in debt repayments principally related
to the 12 1/2% Senior Notes. We will continue to rely on funding from financing
activities as long as there are significant expansions of our network.
 
                                       40
<PAGE>   41
 
     As of December 31, 1998, we had $264.8 million in cash and cash
equivalents. On October 28, 1998, we entered into a $600 million senior secured
credit facility with a syndicate of commercial banks. We received funding of
$200 million, net of $4.2 million of transaction costs. The facility consists of
a $150 million revolving facility, a $200 million term loan facility, and an
uncommitted special purpose loan facility of $250 million. We must comply with
various financial and other covenants on an ongoing basis in addition to meeting
the covenants on a pro forma basis prior to drawing additional amounts under the
credit facility. Certain of the covenants become more restrictive over time.
From time to time we have discussions with the banks to ensure that we will
remain in compliance with these covenants on a prospective basis. Loans
outstanding under the credit facility bear interest at either LIBOR or the lead
commercial bank's prime rate plus applicable margins.
 
     We expect that the primary sources for cash over the next 12 months will be
cash on hand, cash generated by operations, proceeds from IRU sales, proceeds
from the credit facility discussed above and the proceeds from any additional
debt, vendor and working capital financing we may seek. In addition, we have the
ability to sell or borrow against our investments in marketable securities,
including the PSINet stock. We seek to obtain sufficient funding from these
sources for the following major uses of cash:
 
     - our network expansion and other capital expenditures
 
     - debt service;
 
     - lease payments;
 
     - working capital; and
 
     - dividends on preferred stock.
 
     Capital spending in 1999 is projected to be over $600 million. After 1999,
capital expenditures are expected to continue to be substantial. There can be no
assurance that we will be successful in obtaining the necessary financing to
meet our needs. A failure to raise cash would delay or prevent capital
expenditures including the construction of our network expansion. The foregoing
capital expenditure and cash requirements for 1999 and thereafter do not take
into account the Coastal acquisition or any other acquisitions that may
subsequently occur. If we consummate the Coastal acquisition, we will be
obligated to pay $62.5 million in cash and have the option of paying an
additional $25 million in either cash or common stock.
 
     We are required to make payments under various debt and capital lease
arrangements of $15.5 million, $11.8 million, and $9.1 million in 1999, 2000,
and 2001, respectively. We are also required to make quarterly interest payments
on amounts outstanding under our $600 million credit facility and to make
semi-annual interest payments on our 9% Senior Subordinated Notes and the
remaining 12 1/2% Senior Notes. We are required to pay quarterly dividends on
the 7 1/4% Convertible Preferred Stock at an annual rate of 7 1/4%; such
dividends must be paid in cash except that we have the option of paying
dividends in additional shares of 7 1/4% Convertible Preferred Stock through
March 31, 1999. We are required to pay quarterly dividends on the 12 1/2%
Exchangeable Preferred Stock at an annual rate of 12 1/2%; such dividends must
be paid in cash except that we have the option of paying dividends in additional
shares of 12 1/2% Exchangeable Preferred Stock through February 15, 2001.
Dividends on our 6 3/4% Convertible Preferred Stock are payable quarterly in
cash at the annual rate of 6 3/4%. If we are prohibited from paying dividends in
cash under the terms of our debt agreements, then we may pay dividends in common
stock valued at 95% of the average price of the common stock for 5 business days
prior to the dividend payment date. We anticipate that such debt and equity
service payments during 1999 will be made from cash on hand, except for the
dividends on the 12 1/2% Exchangeable Preferred Stock which are anticipated to
be paid in kind with stock dividends.
 
     We are required to make minimum annual lease payments for facilities,
equipment and transmission capacity used in operating our business. In 1999,
2000, 2001, and 2002, we anticipate making payments of approximately $38.8
million, $21.4 million, $16.8 million, and $11.0 million, respectively, on
operating leases. We expect to incur additional operating lease costs associated
with the expansion of our network and the retail and Internet operations.
Additionally, from time to time we enter into various construction and
installation agreements with contractors associated with our network expansion.
 
                                       41
<PAGE>   42
 
     The forward-looking statements set forth above with respect to the
estimated cash requirements relating to capital expenditures, our ability to
meet such cash requirements and our ability to service our debt are based on
certain assumptions as to future events. Important assumptions, which if not
met, could adversely affect our ability to achieve satisfactory results include
that: (i) there will be no significant delays with respect to our network
expansion; (ii) our contractors and partners in cost-saving arrangements will
perform their obligations; (iii) rights-of-way can be obtained in a timely,
cost-effective basis; (iv) we will continue to increase traffic on our network;
and (v) we will be able to obtain vendor or additional debt financing.
 
  Year 2000 Risks
 
     The Year 2000 issue is the result of computer software programs being coded
to use two digits rather than four to define the year. It is possible that some
of our existing computer programs that have date-sensitive coding may recognize
a date using "00" as the year 1900 rather than the year 2000. This could result
in system failures or miscalculations causing disruption of operations, which
could have a material adverse effect on our ability to conduct business after
January 1, 2000, including our inability to provide telecommunications services
to our customers or to accurately invoice customers or collect payments.
 
     Substantially all of our network was built in the last three years. As a
result, we believe that we do not have a significant investment in legacy
systems having substantial Year 2000 exposure. However, we have established a
project team to identify, evaluate and address any existing Year 2000 issues.
This Year 2000 effort covers the fiber optic network and supporting
infrastructure related to providing switched, private line and data
telecommunications services, and other operational and financial information
technology ("IT") systems and applications. Also included in this effort are
various other systems such as building operations and individual personal
computers. The project team is reviewing the status of the Year 2000 compliance
effort of key suppliers and other business partners, and is developing business
continuity plans related to Year 2000 issues. While the Year 2000 project team
is evaluating all potentially non-compliant systems, the Year 2000 effort is
structured to give priority to those systems identified as "mission critical."
 
     The project team has identified the following principal phases of the
project: a) assessment and planning, b) remediation, c) testing, and d)
contingency planning. The assessment and planning phase was substantially
complete at December 31, 1998. We have established a target date of June 30,
1999, for remediation of mission critical systems. Of the applications
identified as critical, many have already been remediated and are being tested.
Testing is expected to be completed by September 30, 1999 for all applications.
In addition, all new components being purchased as part of the ongoing network
and IT infrastructure expansion are being evaluated to ensure compliance.
 
     There can be no assurances that third parties, including customers,
suppliers, and other business partners, will convert their critical systems and
processes in a timely manner. Such failure by any of these parties could disrupt
our business. Therefore, in addition to evaluating our internal systems, we are
in the process of evaluating and documenting the status of Year 2000 compliance
efforts by key suppliers.
 
     We currently project incurring expense of approximately $3.6 million
through the end of 1999 in connection with the Year 2000 remediation project, of
which approximately $.8 million was incurred and expensed as of December 31,
1998. Such amounts are exclusive of amounts that were already anticipated to be
spent on new hardware and software purchases resulting from the expansion of our
network and other business operations. We believe that a portion of the Year
2000 expenses will not be incremental costs, but rather will represent the
redeployment of existing IT resources. This redeployment may cause delays in
making other IT or network upgrades or enhancements; however, the delays are not
expected to have a material effect on our operations.
 
     As part of its Year 2000 initiative, we are evaluating scenarios that may
occur as a result of the century change and are developing contingency and
business continuity plans tailored for Year 2000-related problems. These plans
are expected to provide for key operational back-up, recovery and restoration
alternatives. We expect to have these contingency plans completed by June 30,
1999.
 
                                       42
<PAGE>   43
 
     The above information regarding cost estimates, risks, and estimated
readiness are forward looking statements based on numerous assumptions of future
events, including the availability and future costs of certain technological and
other resources, third party modification actions and other factors. Given the
complexity of these issues and other unidentified risks, actual results may vary
materially from those anticipated and discussed above. Specific factors that
might cause such differences include, among others, the availability and cost of
personnel trained in this area, the ability to locate and correct all affected
computer code, the timing and success of remedial efforts of our third party
suppliers and similar uncertainties.
 
ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK
 
     We are exposed to market risk related to changes in interest rates because
the interest rate on approximately $200 million of our debt is indexed to
floating interest rates. We monitor the risk associated with interest rates on
an ongoing basis, but we have not entered into any interest rate swaps or other
financial instruments to actively hedge the risk of changes in prevailing
interest rates.
 
     Significantly all of our revenue is derived from domestic operations, so we
believe the risk related to foreign currency exchange rates is minimal.
 
ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA
 
     See the Index included at "Item 14. Exhibits, Financial Statement Schedules
and Reports on Form 8-K."
 
ITEM 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND
FINANCIAL DISCLOSURE
 
     None.
 
                                       43
<PAGE>   44
 
                                    PART III
 
ITEM 10. DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT
 
     The information required by this item will be contained in our Proxy
Statement for the Annual Meeting of Stockholders to be filed with the Commission
within 120 days after December 31, 1998, and is incorporated herein by
reference.
 
ITEM 11. EXECUTIVE COMPENSATION
 
     The information required by this item will be contained in our Proxy
Statement for the Annual Meeting of Stockholders to be filed with the Commission
within 120 days after December 31, 1998, and is incorporated herein by
reference.
 
ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT
 
     The information required by this item will be contained in our Proxy
Statement for the Annual Meeting of Stockholders to be filed with the Commission
within 120 days after December 31, 1998, and is incorporated herein by
reference.
 
ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS
 
     The information required by this item will be contained in our Proxy
Statement for the Annual Meeting of Stockholders to be filed with the Commission
within 120 days after December 31, 1998, and is incorporated herein by
reference.
 
                                    PART IV
 
ITEM 14. EXHIBITS, FINANCIAL STATEMENT SCHEDULES, AND REPORTS ON FORM 8-K
 
(a) Documents filed as part of this Report:
 
    (1) Index to Financial Statements:
 
<TABLE>
        <S>                                                           <C>
        Report of Ernst & Young LLP.................................  F-2
        Report of Arthur Andersen LLP...............................  F-3
        Report of Deloitte & Touche LLP.............................  F-4
        Consolidated Balance Sheets as of December 31, 1998 and
          1997......................................................  F-5
        Consolidated Statements of Operations for the years ended
          December 31, 1998, 1997
          and 1996..................................................  F-6
        Consolidated Statements of Stockholders' Equity (Deficit)
          for the years ended December 31, 1998, 1997 and 1996......  F-7
        Consolidated Statements of Cash Flows for the years ended
          December 31, 1998, 1997
          and 1996..................................................  F-8
        Notes to Consolidated Financial Statements..................  F-9
</TABLE>
 
    (2) Index to Financial Statement Schedules:
 
        All Financial Statement Schedules for which provision is made in the
        applicable accounting regulations of the Commission (i) are included in
        the notes to the financial statements included in this report, (ii) are
        not required under the related instruction or (iii) are inapplicable
        and, therefore, have been omitted.
 
                                       44
<PAGE>   45
 
    (3)(a) Exhibits
 
<TABLE>
<CAPTION>
EXHIBIT
NUMBER                             DESCRIPTION
- -------                            -----------
<C>        <S>
 3.1       Restated Certificate of Incorporation of IXC Communications,
           Inc., as amended (incorporated by reference to Exhibit 3.1
           of the IXC Communications, Inc.'s Quarterly Report Form 10-Q
           for the quarter ended September 30, 1998 filed with the
           Commission on November 16, 1998).
 3.2       Bylaws of IXC Communications, Inc., as amended (incorporated
           by reference to Exhibit 3.2 of the IXC Communications,
           Inc.'s Quarterly Report on Form 10-Q for the quarter ended
           September 30, 1997 filed with the Commission on November 14,
           1997).
 4.1       Indenture dated as of October 5, 1995, by and among IXC
           Communications, Inc., on its behalf and as
           successor-in-interest to I-Link Holdings, Inc. and IXC
           Carrier Group, Inc., each of IXC Carrier, Inc., on its
           behalf and as successor-in-interest to I-Link, Inc., CTI
           Investments, Inc., Texas Microwave Inc. and WTM Microwave
           Inc., Atlantic States Microwave Transmission Company,
           Central States Microwave Transmission Company, Telcom
           Engineering, Inc., on its behalf and as
           successor-in-interest to SWTT Company and Microwave Network,
           Inc., Tower Communication Systems Corp., West Texas
           Microwave Company, Western States Microwave Transmission
           Company, Rio Grande Transmission, Inc., IXC Long Distance,
           Inc., Link Net International, Inc. (collectively, the
           "Guarantors"), and IBJ Schroder Bank & Trust Company, as
           Trustee (the "Trustee"), with respect to the 12 1/2% Series
           A and Series B Senior Notes due 2005 (incorporated by
           reference to Exhibit 4.1 of IXC Communications, Inc.'s and
           each of the Guarantor's Registration Statement on Form S-4
           filed with the Commission on April 1, 1996 (File No.
           333-2936) (the "S-4")).
 4.2       Form of 12 1/2% Series A Senior Notes due 2005 (incorporated
           by reference to Exhibit 4.6 of the S-4).
 4.3       Form of 12 1/2% Series B Senior Notes due 2005 and
           Subsidiary Guarantee (incorporated by reference to Exhibit
           4.8 of IXC Communications, Inc.'s Amendment No. 1 to
           Registration Statement on Form S-1 filed with the Commission
           on June 13, 1996 (File No. 333-4061) (the "S-1 Amendment")).
 4.4       Amendment No. 1 to Indenture and Subsidiary Guarantee dated
           as of June 4, 1996, by and among IXC Communications, Inc.,
           the Guarantors and the Trustee (incorporated by reference to
           Exhibit 4.11 of the S-1 Amendment).
 4.5       Purchase Agreement dated as of March 25, 1997, by and among
           IXC Communications, Inc., Credit Suisse First Boston
           Corporation ("CS First Boston") and Dillon Read & Co. Inc.
           ("Dillon Read") (incorporated by reference to Exhibit 4.12
           of IXC Communications, Inc.'s Quarterly Report on Form 10-Q
           for the quarter ended March 31, 1997, filed with the
           Commission on May 15, 1997 (the "March 31, 1997 10-Q")).
 4.6       Registration Rights Agreement dated as of March 25, 1997, by
           and among IXC Communications, Inc., CS First Boston and
           Dillon Read (incorporated by reference to Exhibit 4.13 of
           the March 31, 1997 10-Q).
 4.7       Amendment to Registration Rights Agreement dated as of Marc
           25, 1997, by and between IXC Communications, Inc. and
           Trustees of General Electric Pension Trust (incorporated by
           reference to Exhibit 4.14 of the March 31, 1997 10-Q).
 4.8       Registration Rights Agreement dated as of July 8, 1997,
           among IXC Communications, Inc. and each of William G. Rodi,
           Gordon Hutchins, Jr. and William F. Linsmeier (incorporated
           by reference to Exhibit 4.15 of IXC Communications, Inc.'s
           Quarterly Report on Form 10-Q for the quarter ended June 30,
           1997, as filed with the Commission on August 6, 1997 (the
           "June 30, 1997 10-Q")).
 4.9       Registration Rights Agreement dated as of July 8, 1997,
           among IXC Communications, Inc. and each of William G. Rodi,
           Gordon Hutchins, Jr. and William F. Linsmeier (incorporated
           by reference to Exhibit 4.16 of the June 30, 1997 10-Q).
</TABLE>
 
                                       45
<PAGE>   46
 
<TABLE>
<CAPTION>
EXHIBIT
NUMBER                             DESCRIPTION
- -------                            -----------
<C>        <S>
 4.10      Indenture dated as of August 15, 1997, between IXC
           Communications, Inc. and The Bank of New York (incorporated
           by reference to Exhibit 4.2 of IXC Communications, Inc.'s
           Current Report on Form 8-K dated August 20, 1997, and filed
           with the Commission on August 28, 1997 (the "8-K")).
 4.11      First Supplemental Indenture dated as of October 23, 1997,
           among IXC Communications, Inc., the Guarantors, IXC
           International, Inc. and IBJ Schroder Bank & Trust Company
           (incorporated by reference to Exhibit 4.13 of IXC
           Communications, Inc.'s Annual Report on Form 10-K for the
           year ended December 31, 1997, and filed with the Commission
           on March 16, 1998 (the "1997 10-K")).
 4.12      Second Supplemental Indenture dated as of December 22, 1997,
           among IXC Communications, Inc., the Guarantors, IXC Internet
           Services, Inc., IXC International, Inc. and IBJ Schroder
           Bank & Trust Company (incorporated by reference to Exhibit
           4.14 of the 1997 10-K).
 4.13      Third Supplemental Indenture dated as of January 6, 1998,
           among IXC Communications, Inc., the Guarantors, IXC Internet
           Services, Inc., IXC International, Inc. and IBJ Schroder
           Bank & Trust Company (incorporated by reference to Exhibit
           4.15 of the 1997 10-K).
 4.14      Fourth Supplemental Indenture dated as of April 3, 1998,
           among IXC Communications, Inc., the Guarantors, IXC Internet
           Services, Inc., IXC International, Inc., and IBJ Schroder
           Bank & Trust Company (incorporated by reference to Exhibit
           4.15 of IXC Communications, Inc.'s Registration Statement on
           Form S-3 filed with the Commission on May 12, 1998 (File No.
           333-52433)).
 4.15      Purchase Agreement dated as of March 25, 1998, among IXC
           Communications, Inc., Goldman Sachs & Co. ("Goldman"), CS
           First Boston, Merrill Lynch, Pierce, Fenner & Smith
           Incorporated ("Merrill") and Morgan Stanley & Co.
           Incorporated ("Morgan Stanley") (incorporated by reference
           to Exhibit 4.1 IXC Communications, Inc.'s Current Report on
           Form 8-K dated March 30, 1998, and filed with the Commission
           on April 7, 1998 (the "April 7, 1998 8-K")).
 4.16      Registration Rights Agreement dated as of March 30, 1998,
           among IXC Communications, Inc., Goldman, CS First Boston,
           Merrill and Morgan Stanley (incorporated by reference to
           Exhibit 4.2 of the April 7, 1998 8-K).
 4.17      Deposit Agreement dated as of March 30, 1998, between IXC
           Communications, Inc. and BankBoston N.A. (incorporated by
           reference from Exhibit 4.3 of the April 7, 1998 8-K).
 4.18      Purchase Agreement dated as of April 16, 1998, by and among
           IXC Communications, Inc., CS First Boston, Merrill, Morgan
           Stanley and Nationsbanc Montgomery Securities LLC
           (incorporated by reference to Exhibit 4.1 of IXC
           Communications, Inc.'s Current Report on Form 8-K dated
           April 21, 1998, and filed with the Commission on April 22,
           1998 (the "April 22, 1998 8-K").
 4.19      Registration Rights Agreement dated as of April 16, 1998, by
           and among IXC Communications, Inc., Credit Suisse First
           Boston Corporation, Merrill, Morgan Stanley and Nationsbanc
           Montgomery Securities LLC (incorporated by reference to
           Exhibit 4.2 of the April 22, 1998 8-K).
 4.20      Indenture dated as of April 21, 1998, between IXC
           Communications, Inc. and IBJ Schroder Bank & Trust Company,
           as Trustee (incorporated by reference to Exhibit 4.3 of the
           April 22, 1998 8-K).
 4.21      Rights Agreement dated as of September 9, 1998, between IXC
           Communications, Inc. and U.S. Stock Transfer Corporation
           (incorporated by reference to Exhibit 4.1 of IXC
           Communications, Inc.'s Form 8-K dated September 8, 1998 and
           filed with Commission on September 11, 1998).
</TABLE>
 
                                       46
<PAGE>   47
 
<TABLE>
<CAPTION>
EXHIBIT
NUMBER                             DESCRIPTION
- -------                            -----------
<C>        <S>
10.1       Office Lease dated as of June 21, 1989 with USAA Real Estate
           Company, as amended (incorporated by reference to Exhibit
           10.1 of the S-4).
10.2       Equipment Lease dated as of December 1, 1994, by and between
           DSC Finance Corporation and Switched Services
           Communications, L.L.C.; Assignment Agreement dated as of
           December 1, 1994, by and between Switched Services
           Communications, L.L.C. and DSC Finance Corporation; and
           Guaranty dated December 1, 1994, made in favor of DSC
           Finance Corporation by IXC Communications, Inc.
           (incorporated by reference to Exhibit 10.2 of the S-4).
10.3       Amended and Restated 1994 Stock Plan of IXC Communications,
           Inc., as amended (incorporated by reference to Exhibit 10.3
           of the June 30, 1997 10-Q).
10.4*      Form of Non-Qualified Stock Option Agreement under the 1994
           Stock Plan of IXC Communications, Inc. (incorporated by
           reference to Exhibit 10.4 of the S-4).
10.5       Amended and Restated Development Agreement by and between
           Intertech Management Group, Inc. and IXC Long Distance, Inc.
           (incorporated by reference to Exhibit 10.7 of IXC
           Communications, Inc.'s and the Guarantors' Amendment No. 1
           to Registration Statement on Form S-4 filed with the
           Commission on May 20, 1996 (File No. 333-2936) ("Amendment
           No. 1 to S-4")).
10.6       Third Amended and Restated Service Agreement dated as of
           April 16, 1998, among IXC Long Distance, Inc., IXC Carrier,
           Inc., IXC Broadband, Inc. and Excel Telecommunications, Inc.
           (incorporated by reference to Exhibit 10.6 of IXC
           Communications, Inc.'s Quarterly Report on Form 10-Q for the
           quarter ended March 31, 1998, filed with the Commission on
           May 15, 1998 (the "March 31, 1998 10-Q")).
10.7       Equipment Purchase Agreement dated as of January 16, 1996,
           by and between Siecor Corporation and IXC Carrier, Inc.
           (incorporated by reference to Exhibit 10.9 of the S-4).
10.8*      1996 Stock Plan of IXC Communications, Inc., as amended
           (incorporated by reference to Exhibit 10.10 of the IXC
           Communications, Inc. Annual Report on Form 10-K for the year
           ended December 31, 1996 and filed with the Commission on
           March 28, 1997 (the "1996 10-K")).
10.9       IRU Agreement dated as of November 1995 between WorldCom,
           Inc. and IXC Carrier, Inc. (incorporated by reference to
           Exhibit 10.11 of Amendment No. 1 to the S-4).
10.10*+    IXC Communications, Inc. Outside Directors' Phantom Stock
           Plan 1999 Restatement.
10.11      Business Consultant and Management Agreement dated as of
           March 1, 1998, by and between IXC Communications, Inc. and
           Culp Communications Associates (incorporated by reference to
           Exhibit 10.11 of the March 31, 1998 10-Q).
10.12      Employment Agreement dated as of December 28, 1995, by and
           between IXC Communications, Inc. and James F. Guthrie
           (incorporated by reference to Exhibit 10.14 of the S-1
           Amendment).
10.13*     Special Stock Plan of IXC Communications, Inc. (incorporated
           by reference to Exhibit 10.16 of the 1996 10-K).
10.14      Lease dated as of June 4, 1997, between IXC Communications,
           Inc. and Carramerca Realty, L.P. (incorporated by reference
           to Exhibit 10.17 of the June 30, 1997 10-Q).
10.15      Loan and Security Agreement dated as of July 18, 1997, among
           IXC Communications, Inc., IXC Carrier, Inc. and NTFC Capital
           Corporation ("NTFC") (incorporated by reference to Exhibit
           10.18 of the June 30, 1997 10-Q).
</TABLE>
 
                                       47
<PAGE>   48
 
<TABLE>
<CAPTION>
EXHIBIT
NUMBER                             DESCRIPTION
- -------                            -----------
<C>        <S>
10.16      IRU and Stock Purchase Agreement dated as of July 22, 1997,
           between IXC Internet Services, Inc. and PSINet Inc.
           (incorporated by reference to Exhibit 10.19 of IXC
           Communications, Inc.'s Amendment No. 1 to Form 10-Q/A for
           the quarter ended September 30, 1997 filed with the
           Commission on December 12, 1997 (the "September 30, 1997
           10-Q/A")).
10.17      Joint Marketing and Services Agreement dated as of July 22,
           1997, between IXC Internet Services, Inc. and PSINet Inc.
           (incorporated by reference to Exhibit 10.20 of the September
           30, 1997 10-Q/A).
10.18      Employment Agreement dated as of September 9, 1997, between
           Benjamin L. Scott and IXC Communications, Inc. (incorporated
           by reference to Exhibit 10.21 of IXC Communication Inc.'s
           Amendment No. 1 to Registration Statement on S-4 filed with
           the Commission on December 15, 1997 (File No. 333-37157)
           ("Amendment No. 1 to the EPS S-4")).
10.19*     IXC Communications, Inc. 1997 Special Executive Stock Plan
           (incorporated by reference to Exhibit 10.22 of Amendment No.
           1 to the EPS S-4).
10.20      First Amendment to Loan and Security Agreement dated as of
           December 23, 1997, among IXC Communications, Inc., IXC
           Carrier, Inc., NTFC and Export Development Corporation
           ("EDC") (incorporated by reference to Exhibit 10.21 of the
           1997 10-K).
10.21      Second Amendment to Loan and Security Agreement dated as of
           January 21, 1998, among IXC Communications, Inc., IXC
           Carrier, Inc., NTFC and EDC (incorporated by reference to
           Exhibit 10.22 of the 1997 10-K).
10.22*     IXC Communications, Inc. 1998 Stock Plan (incorporated by
           reference to Exhibit 10.22 of the IXC Communications, Inc.'s
           Quarterly Report Form 10-Q for the quarter ended September
           30, 1998 filed with the Commission on November 16, 1998).
10.23      Credit Agreement, dated as of October 27, 1998 among the
           Borrower, NationsBank, N.A., as a Lender and Administrative
           Agent, NationsBanc Montgomery Securities, LLC, as Lead
           Arranger, and Credit Suisse First Boston, Goldman Sachs
           Credit Partners, L.P., EDC and TD Securities (USA), Inc.,
           each as a Lender and Co-Syndication Agent (incorporated by
           reference to Exhibit 10.1 of IXC Communications, Inc.
           Current Report on Form 8-K dated October 27, 1998 and filed
           with the Commission on November 4, 1998).
10.24+     Office Lease Agreement dated as of December 7, 1998, between
           B.O. III, LTD and IXC Communications Services, Inc.
10.25+*    Employment Agreement dated as of December 7, 1998, by and
           between IXC Communications, Inc. and Michael W. Vent.
21.1+      Subsidiaries of IXC Communications, Inc.
23.1+      Consent of Ernst & Young, LLP.
23.2+      Consent of Arthur Andersen LLP.
23.3+      Consent of Deloitte & Touche LLP.
23.4+      Consent of Arthur Andersen LLP.
23.5+      Auditors' Report of Arthur Andersen LLP
24.1       Powers of Attorney (included as the signature page of this
           Form 10-K).
27.1+      Financial Data Schedule.
</TABLE>
 
- ---------------
 *  Management contract or executive compensation plan or arrangement required
    to be indicated as such and filed as an exhibit pursuant to applicable rules
    of the Commission.
 
 +  Filed herewith.
 
    (b) Reports on Form 8-K.
 
(1) Form 8-K dated October 27, 1998 and filed with the Commission on November 4,
    1998 with respect to a press release reporting on the Company's credit
    facility with certain lenders.
 
                                       48
<PAGE>   49
 
(2) Form 8-K dated October 29, 1998 and filed with the Commission on October 30,
    1998 with respect to a press release announcing Company's results of
    operations for the quarter ended September 30, 1998.
 
(3) Form 8-K dated October 30, 1998 and filed with the Commission on October 30,
    1998 with respect to a press release reporting on the Company's restated
    consolidated financial statements including the combined results of
    operations, financial position and cash flows of Eclipse Telecommunications,
    Inc. and the Company.
 
(4) Form 8-K dated November 18, 1998 and filed with the Commission on November
    18, 1998 with respect to a press release reporting on the Company's comments
    on its outlook of results of operations for the quarter ending December 31,
    1998.
 
(5) Form 8-K dated December 7, 1998 and filed with the Commission on December 8,
    1998 with respect to a press release reporting on an agreement with DCI
    Telecommunications, Inc.
 
(6) Form 8-K dated December 14, 1998 and filed with the Commission on December
    22, 1998 with respect to a press release reporting on the Company's Internet
    backbone network and a press release reporting on the Company's capacity
    agreement with Level 3 Communications.
 
                                       49
<PAGE>   50
 
                                   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.
 
                                          IXC COMMUNICATIONS, INC.
 
                                          By:     /s/ JAMES F. GUTHRIE
                                            ------------------------------------
                                                      James F. Guthrie
                                             Executive Vice President and Chief
                                                     Financial Officer
 
Dated: March 26, 1999
 
                               POWERS OF ATTORNEY
 
     KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints Benjamin L. Scott, President, Chairman of the
Board and Chief Executive Officer of IXC Communications, Inc. and Jeffrey C.
Smith, Senior Vice President, General Counsel and Secretary of IXC
Communications, Inc., and each of them his true and lawful attorneys-in-fact and
agents with full power of substitution and resubstitution, for him and in his
name, place and stead, in any and all capacities, to sign any and all amendments
to this Report on Form 10-K, and to file the same, with all exhibits thereto,
and other documents in connection therewith, with the Securities and Exchange
Commission, granting unto said attorneys-in-fact and agents, and each of them,
full power and authority to do and perform each and every act and thing
requisite and necessary to be done in and about the premises, as fully to all
intents and purposes as he might or could do in person, hereby ratifying and
confirming all that said attorneys-in-fact and agents or any of them, or their
or his substitute or substitutes, may lawfully do or cause to be done by virtue
hereof.
 
     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>                                                    <C>                              <S>
                /s/ BENJAMIN L. SCOTT                    President, Chief Executive     March 26, 1999
- -----------------------------------------------------    Officer and Chairman of the
                  Benjamin L. Scott                      Board (Principal Executive
                                                                  Officer)
 
                 /s/ RALPH J. SWETT                               Director              March 26, 1999
- -----------------------------------------------------
                   Ralph J. Swett
 
                /s/ JAMES F. GUTHRIE                    Executive Vice President and    March 26, 1999
- -----------------------------------------------------      Chief Financial Officer
                  James F. Guthrie                        (Principal Financial and
                                                             Accounting Officer)
 
                /s/ RICHARD D. IRWIN                              Director              March 26, 1999
- -----------------------------------------------------
                  Richard D. Irwin
 
                 /s/ WOLFE H. BRAGIN                              Director              March 26, 1999
- -----------------------------------------------------
                   Wolfe H. Bragin
 
                /s/ CARL W. MCKINZIE                              Director              March 26, 1999
- -----------------------------------------------------
                  Carl W. McKinzie
 
               /s/ PHILLIP L. WILLIAMS                            Director              March 26, 1999
- -----------------------------------------------------
                 Phillip L. Williams
 
                   /s/ JOE C. CULP                                Director              March 26, 1999
- -----------------------------------------------------
                     Joe C. Culp
</TABLE>
 
                                       50
<PAGE>   51
 
                                    GLOSSARY
 
     ATM (asynchronous transfer mode) -- An information transfer standard that
is one of a general class of technologies that relay traffic by way of an
address contained within the first five bytes of a standard 53-byte-long packet
or cell. The ATM format can be used by many different information systems,
including local area networks, to deliver voice, video and data traffic at
varying rates.
 
     Backbone -- The through-portions of a transmission network, as opposed to
spurs which branch off the through-portions.
 
     Bandwidth -- The range of frequencies that can be transmitted through a
medium, such as glass fibers, without distortion. The greater the bandwidth, the
greater the information-carrying capacity of such medium.
 
     Broadband -- Broadband communications systems can transmit large quantities
of voice, data and video. Examples of broadband communication systems include
DS-3 fiber optic systems, which can transmit 672 simultaneous voice
conversations, or a broadcast television station signal, that transmits high
resolution audio and video signals into the home. Broadband connectivity is also
an essential element for interactive multimedia applications.
 
     Digital -- A method of storing, processing and transmitting information
through the use of distinct electronic or optical pulses that represent on/off
states. Digital transmission and switching technologies (both fiber and
microwave) employ a sequence of these pulses to represent information in
contrast to the continuously variable analog signal. The precise digital numbers
minimize distortion (such as graininess or snow in the case of video
transmission, or static or other background distortion in the case of audio
transmission). Both the Company's microwave and fiber optic facilities transmit
digital information.
 
     DS-1, DS-3 -- Standard telecommunications industry digital signal formats,
which are distinguishable by bit rate (the number of binary digits (0 and 1)
transmitted per second). DS-0 service has a bit rate of 64 kilobits per second
and can transmit only one voice or data transmission at a time. DS-1 service has
a bit rate of 1.544 megabits per second and can transmit 24 simultaneous voice
or data transmissions. DS-3 service has a bit rate of 45 megabits per second and
can transmit 672 simultaneous voice or data transmissions.
 
     DS-3 miles -- A measure of the total capacity and length of a transmission
path, calculated as the capacity of the transmission path in DS-3s multiplied by
the length of the path in miles.
 
     Frame Relay -- A high-speed, data-packet switching service used to transmit
data between computers. Frame Relay supports data units of variable lengths at
access speeds ranging from 56 kilobits per second to 1.5 megabits per second.
This service is well-suited for connecting local area networks, but is not
appropriate for voice and video applications due to the variable delays which
can occur. Frame Relay was designed to operate at high speeds on modern fiber
optic networks.
 
     Interexchange Carrier -- A company providing inter-LATA or long distance
services between LATAs on an intrastate or interstate basis.
 
     Inter-LATA -- InterLATA calls are calls that pass from one LATA to another.
Typically, these calls are referred to as long distance calls.
 
     Intra-LATA -- IntraLATA calls are those local calls that originate and
terminate within the same LATA.
 
     Intranet -- An infrastructure based on Internet standards and technologies
that provides access to information within limited and well-defined groups such
as universities, governments and other large organizations.
 
     Kilobit -- One thousand bits of information. The information-carrying
capacity (i.e., bandwidth) of a circuit may be measured in "kilobits per
second".
 
     LATAs (local access and transport areas) -- The approximately 200
geographic areas that define the areas between which the RBOCs were prohibited
from providing long distance services prior to the Telecommunications Act.
                                       51
<PAGE>   52
 
     LEC (local exchange carrier) -- A company providing local telephone
services.
 
     Local loop -- A circuit within a LATA.
 
     Long distance switched services -- Telecommunications services such as
residential long distance services that are processed through digital switches
and delivered over long-haul circuits and other transmission facilities.
 
     Megabit -- One million bits of information. The information-carrying
capacity (i.e., bandwidth) of a circuit may be measured in "megabits per
second".
 
     OC-3, OC-12, OC-48 and OC-192 -- Standard telecommunications industry
measurements for optical transmission capacity distinguishable by bit rate
transmitted per second and the number of voice or data transmissions that can be
simultaneously transmitted through fiber optic cable. An OC-3 is generally
equivalent to three DS3s and has a bit rate of 155.52 megabits per second and
can transmit 2,016 simultaneous voice or data transmissions. An OC-12 has a bit
rate of 622.08 megabits per second and can transmit 8,064 simultaneous voice or
data transmissions. An OC-48 has a bit rate of 2,488.32 megabits per second and
can transmit 32,256 simultaneous voice or data transmissions. An OC-192 has a
bit rate of 9,953.28 megabits per second and can transmit 129,024 simultaneous
voice or data transmissions.
 
     Optronic -- a combination of optical and electronic equipment.
 
     RBOCs (regional Bell operating companies) -- The seven local telephone
companies (formerly part of AT&T) established by court decree in 1982.
 
     SONET (synchronous optical network technology) -- An electronics and
network architecture for variable-bandwidth products which enables transmission
of voice, video and data (multimedia) at very high speeds.
 
     Switch -- A device that opens or closes circuits or selects the paths or
circuits to be used for transmission of information. Switching is a process of
interconnecting circuits to form a transmission path between users.
 
                                       52
<PAGE>   53
 
                            IXC COMMUNICATIONS, INC.
 
                   INDEX TO CONSOLIDATED FINANCIAL STATEMENTS
 
<TABLE>
<S>                                                           <C>
Report of Ernst & Young LLP.................................  F-2
 
Report of Arthur Andersen LLP...............................  F-3
Report of Deloitte & Touche LLP.............................  F-4
Consolidated Balance Sheets as of December 31, 1998 and
  1997......................................................  F-5
Consolidated Statements of Operations for the years ended
  December 31, 1998, 1997 and 1996..........................  F-6
Consolidated Statements of Changes in Stockholders' Equity
  (Deficit) for the
  years ended December 31, 1998, 1997 and 1996..............  F-7
Consolidated Statements of Cash Flows for the years ended
  December 31, 1998, 1997 and 1996..........................  F-8
Notes to Consolidated Financial Statements..................  F-9
</TABLE>
 
                                       F-1
<PAGE>   54
 
                          INDEPENDENT AUDITOR'S REPORT
 
The Board of Directors
IXC Communications, Inc.
 
     We have audited the accompanying consolidated balance sheets of IXC
Communications, Inc. and its subsidiaries as of December 31, 1998 and 1997 and
the related consolidated statements of operations, stockholders' equity
(deficit), 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 did not audit the consolidated
financial statements of Network Long Distance, Inc., including the subsidiaries
Long Distance Telecom, Inc. and National Teleservice, Incorporated
(collectively, Network Long Distance) which was combined with the Company on
June 3, 1998, in a business combination accounted for as a pooling of interests
as described in Note 3 to the consolidated financial statements, which
statements reflect total assets constituting 5.5% of the related 1997
consolidated financial statement totals, and which statements reflect net loss
constituting ($4.6) million and ($6.8) million of the related 1997 and 1996
consolidated financial statement totals, respectively. Those statements were
audited by other auditors whose reports have been furnished to us, and our
opinion, insofar as it relates to data included for Network Long Distance is
based solely on the reports of the other auditors. The financial statements of
Marca-Tel S.A. de C.V. (Marca-Tel), a corporation in which the Company has an
indirect interest, have been audited by other auditors whose reports have been
furnished to us; insofar as our opinion on the consolidated financial statements
relates to data included for Marca-Tel, it is based solely on their report. In
the consolidated financial statements, the Company's equity in the net loss of
Marca-Tel is stated at ($15.9) million and ($23.6) million, for 1998 and 1997,
respectively.
 
     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 and the reports of other auditors provide a
reasonable basis for our opinion.
 
     In our opinion, based on our audits and the reports of other auditors for
the periods indicated, the financial statements referred to above present
fairly, in all material respects, the consolidated financial position of IXC
Communications, Inc. and its subsidiaries at December 31, 1998 and 1997, and the
consolidated results of their operations and their cash flows for each of the
three years in the period ended December 31, 1998, in conformity with generally
accepted accounting principles.
 
                                          /s/ ERNST & YOUNG LLP
 
Austin, Texas
February 28, 1999 (except for
Note 20, as to which the date is
March 10, 1999)
 
                                       F-2
<PAGE>   55
 
                    REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS
 
To the Stockholders of
Network Long Distance, Inc.:
 
     We have audited the accompanying consolidated balance sheets of Network
Long Distance, Inc. (a Delaware Corporation) and subsidiaries as of March 31,
1998, and the related consolidated statements of operations, stockholders'
equity and cash flows for the years ended March 31, 1998 and 1997. 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 did not audit the financial statements of National Teleservice,
Incorporated, a company acquired during the year ended March 31, 1998 in a
transaction accounted for as a pooling of interests. Such statements are
included in the consolidated financial statements of Network Long Distance,
Inc., and reflect total assets and total revenues of 28.1% and 30.6%,
respectively, of the related consolidated totals as of and for the year ended
March 31, 1997. These statements were audited by other auditors whose report has
been furnished to us, and our opinion, insofar as it relates to amounts included
for National Teleservice, Incorporated, is based solely upon the report of the
other auditors.
 
     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 and the report of the other auditors provide a
reasonable basis for our opinion.
 
     In our opinion, based upon our audits and the report of the other auditors,
the consolidated financial statements referred to above present fairly, in all
material respects, the financial position of Network Long Distance, Inc. and
subsidiaries as of March 31, 1998, and the results of their operations and their
cash flows for the years ended March 31, 1998 and 1997, in conformity with
generally accepted accounting principles.
 
                                          /s/ ARTHUR ANDERSEN LLP
 
Jackson, Mississippi
May 18, 1998.
 
                                       F-3
<PAGE>   56
 
                          INDEPENDENT AUDITORS' REPORT
 
Board of Directors
National Teleservice, Incorporated
Winona, Minnesota
 
     We have audited the accompanying consolidated balance sheets of National
Teleservice, Inc. (the Company) as of March 31, 1997 and the related
consolidated statements of income, shareholders' equity, and cash flows for each
of the three years in the period ended March 31, 1997, not separately presented
herein. These consolidated financial statements are the responsibility of the
Company's management. Our responsibility is to express and opinion on these
consolidated 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 audits to obtain
reasonable assurance about whether the consolidated financial statements are
free of material misstatement. An audit includes examining, on a test basis,
evidence supporting the amounts and disclosures in the consolidated 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 audit provides a
reasonable basis for our opinion.
 
     In our opinion, such consolidated financial statements present fairly, in
all material respects, the financial position of National Teleservice, Inc. at
March 31, 1997, and the results of its operations and its cash flows for the
year then ended in conformity with generally accepted accounting principles.
 
                                          /s/ DELOITTE & TOUCHE LLP
 
Minneapolis, Minnesota
July 28, 1997
 
                                       F-4
<PAGE>   57
 
                            IXC COMMUNICATIONS, INC.
 
                          CONSOLIDATED BALANCE SHEETS
           (DOLLARS IN THOUSANDS EXCEPT SHARE AND PER SHARE AMOUNTS)
 
                                     ASSETS
 
<TABLE>
<CAPTION>
                                                              DECEMBER 31,    DECEMBER 31,
                                                                  1998            1997
                                                              ------------    ------------
<S>                                                           <C>             <C>
Cash and cash equivalents...................................   $  264,826      $ 155,855
Accounts receivable, net of allowance for doubtful accounts
  of $16,664 in 1998 and $13,119 in 1997....................      107,558        112,357
Current portion of notes receivable.........................       63,748            739
Note receivable from Westel.................................        9,421             --
Prepaid expenses and other current assets...................       10,965          4,108
                                                               ----------      ---------
         Total current assets...............................      456,518        273,059
Property and equipment, net.................................      983,676        613,874
Non-current marketable securities...........................      219,880             --
Investment in unconsolidated subsidiaries...................        9,505         17,497
Deferred charges and other non-current assets...............       78,658         64,442
                                                               ----------      ---------
         Total assets.......................................   $1,748,237      $ 968,872
                                                               ==========      =========
LIABILITIES, REDEEMABLE PREFERRED STOCK AND STOCKHOLDERS' DEFICIT
Current portion of long-term debt...........................   $   13,984      $  12,294
Accounts payable-trade......................................       33,558         86,651
Accrued cost of service.....................................       43,177         56,994
Taxes payable...............................................       23,758          9,426
Accrued interest............................................        8,768          8,911
Customer deposits...........................................       18,595         13,006
Current portion of unearned revenue.........................       33,640          6,310
Other current liabilities...................................       21,186         12,084
                                                               ----------      ---------
         Total current liabilities..........................      196,666        205,676
Long-term debt, less current portion........................      679,016        308,453
Unearned revenue -- noncurrent..............................      488,395         59,627
Other noncurrent liabilities................................        8,848         10,419
7 1/4% Convertible Preferred Stock with an aggregate
  liquidation preference of $.01 par value;
  authorized -- 3,000,000 shares of all classes of Preferred
  Stock; 1,074,500 shares issued and outstanding (aggregate
  liquidation preference of $107,450) at December 31,
  1998......................................................      103,623        101,239
12 1/2% Exchangeable Preferred Stock; $.01 par value;
  authorized -- 3,000,000 shares of all classes of Preferred
  Stock; 349,434 shares issued and outstanding (aggregate
  liquidation preference of $354,894, including accrued
  dividends of $5,460) at December 31, 1998.................      344,235        302,129
Stockholders' equity (deficit):
  10% Junior Series 3 Cumulative Preferred Stock, $.01 par
    value; authorized -- 3,000,000 shares of all classes of
    Preferred Stock; no shares issued and outstanding at
    December 31, 1998 and 414 shares issued and outstanding
    at December 31, 1997 (aggregate liquidation preference
    of $692 at December 31, 1997)...........................           --              1
  6 3/4% Cumulative Convertible Preferred Stock, $.01 par
    value; authorized -- 3,000,000 shares of all classes of
    Preferred Stock; 155,250 shares issued and outstanding
    at December 31, 1998 and no shares issued and
    outstanding at December 31, 1997 (aggregate liquidation
    preference of $155,250 at December 31, 1998)............            2             --
  Common Stock, $.01 par value; authorized-- 100,000,000
    shares; 36,409,709 shares and 35,575,325 shares issued
    and outstanding at December 31,1998 and December 31,
    1997....................................................          364            356
  Additional paid-in capital................................      253,429        143,355
  Accumulated deficit.......................................     (326,341)      (162,383)
                                                               ----------      ---------
         Total stockholders' deficit........................      (72,546)       (18,671)
                                                               ----------      ---------
         Total liabilities, redeemable preferred stock and
           stockholders' deficit............................   $1,748,237      $ 968,872
                                                               ==========      =========
</TABLE>
 
                            See accompanying notes.
                                       F-5
<PAGE>   58
 
                            IXC COMMUNICATIONS, INC.
 
                     CONSOLIDATED STATEMENTS OF OPERATIONS
                 (DOLLARS IN THOUSANDS, EXCEPT PER SHARE DATA)
 
<TABLE>
<CAPTION>
                                                                YEAR ENDED DECEMBER 31,
                                                           ----------------------------------
                                                             1998         1997         1996
                                                           ---------    ---------    --------
<S>                                                        <C>          <C>          <C>
Net operating revenue:
(Net of service credits and bad debt provisions of
  $55,113, $20,782, and $6,311, respectively)
  Private line service...................................  $ 225,358    $ 161,570    $ 99,793
  Long distance switched services........................    414,405      359,288     182,174
  Data and Internet services.............................      9,029          759          --
  Other..................................................     19,776           --          --
                                                           ---------    ---------    --------
                                                             668,568      521,617     281,967
Operating expenses:
  Cost of services.......................................    433,300      395,667     194,881
  Operations and administration..........................    144,536      102,760      71,103
  Depreciation and amortization..........................    113,586       69,139      35,927
  Merger costs...........................................      7,955        3,591          --
                                                           ---------    ---------    --------
     Operating loss......................................    (30,809)     (49,540)    (19,944)
Interest income..........................................     14,339        7,565       2,838
Interest income on escrow under 12 1/2% Senior Notes.....         --          203       7,404
Interest expense.........................................    (31,683)     (31,702)    (37,636)
Equity (loss) from unconsolidated subsidiaries...........    (32,986)     (23,800)     (1,961)
Other, net...............................................        226           29        (200)
                                                           ---------    ---------    --------
Loss before (provision) benefit for income taxes,
  minority interest and extraordinary loss...............    (80,913)     (97,245)    (49,499)
(Provision) benefit for income taxes.....................    (13,925)      (1,359)      5,880
Minority interest........................................       (666)        (560)       (618)
                                                           ---------    ---------    --------
Loss before extraordinary loss...........................    (95,504)     (99,164)    (44,237)
Extraordinary loss on early extinguishment of debt, net
  of benefit for income tax of $6,265....................    (66,952)          --          --
                                                           ---------    ---------    --------
Net loss.................................................   (162,456)     (99,164)    (44,237)
Dividends applicable to preferred stock..................    (58,239)     (21,636)     (1,739)
                                                           ---------    ---------    --------
Net loss applicable to common stockholders...............  $(220,695)   $(120,800)   $(45,976)
                                                           =========    =========    ========
Basic and diluted loss per share:
  Before extraordinary loss..............................  $   (4.28)   $   (3.47)   $  (1.52)
  Extraordinary loss.....................................      (1.87)          --          --
                                                           ---------    ---------    --------
  Net loss...............................................  $   (6.15)   $   (3.47)   $  (1.52)
                                                           =========    =========    ========
Weighted average shares outstanding......................     35,868       34,777      30,277
                                                           =========    =========    ========
</TABLE>
 
                            See accompanying notes.
                                       F-6
<PAGE>   59
 
                            IXC COMMUNICATIONS, INC.
 
           CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (DEFICIT)
                       (DOLLARS AND SHARES IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                       10%         6 3/4% CUMULATIVE
                                 JUNIOR SERIES 3      CONVERTIBLE
                                 PREFERRED STOCK    PREFERRED STOCK     COMMON STOCK     ADDITIONAL                 STOCKHOLDERS'
                                 ---------------   -----------------   ---------------    PAID-IN     ACCUMULATED      EQUITY
                                 SHARES   AMOUNT   SHARES    AMOUNT    SHARES   AMOUNT    CAPITAL       DEFICIT       (DEFICIT)
                                 ------   ------   -------   -------   ------   ------   ----------   -----------   -------------
<S>                              <C>      <C>      <C>       <C>       <C>      <C>      <C>          <C>           <C>
BALANCE AT DECEMBER 31, 1995...    13      $ 13       --       $--     27,284    $273     $ 42,300     $ (19,105)     $  23,481
Issuance of common stock.......    --        --       --       --       6,533      65       95,849            --         95,914
Change in fiscal year of merged
  entities.....................    --        --       --       --          --      --           --           123            123
Net loss.......................    --        --       --       --          --      --           --       (44,237)       (44,237)
                                  ---      ----      ---       --      ------    ----     --------     ---------      ---------
BALANCE AT DECEMBER 31, 1996...    13        13       --       --      33,817     338      138,149       (63,219)        75,281
Issuance of common stock.......    --        --       --       --       1,187      12       23,440            --         23,452
Stock option exercises.........    --        --       --       --          63       1        1,967            --          1,968
Preferred dividends paid in
  kind and accrued.............    --        --       --       --          --      --      (20,047)           --        (20,047)
Conversion of Series 3
  Preferred Stock..............   (12)      (12)      --       --         605       6            5            --             (1)
Other..........................    --        --       --       --         (97)     (1)        (159)           --           (160)
Net loss.......................    --        --       --       --          --      --           --       (99,164)       (99,164)
                                  ---      ----      ---       --      ------    ----     --------     ---------      ---------
BALANCE AT DECEMBER 31, 1997...     1         1       --       --      35,575     356      143,355      (162,383)       (18,671)
Effect of pooling of
  interests....................    --        --       --       --          --      --           --        (1,502)        (1,502)
Redemption of Series 3
  Preferred Stock..............    (1)       (1)      --       --          --      --         (708)           --           (709)
Issuance of common stock for
  acquisitions.................    --        --       --       --         265       3       14,520            --         14,523
Stock option exercises.........    --        --       --       --         594       5        6,440            --          6,445
Issuance of preferred stock....    --        --      155        2          --      --      148,061            --        148,063
Preferred dividends paid in
  kind and accrued.............    --        --       --       --          --      --      (58,239)           --        (58,239)
Net loss.......................    --        --       --       --          --      --           --      (162,456)      (162,456)
                                  ---      ----      ---       --      ------    ----     --------     ---------      ---------
BALANCE AT DECEMBER 31, 1998...    --      $ --      155       $2      36,434    $364     $253,429     $(326,341)     $ (72,546)
                                  ===      ====      ===       ==      ======    ====     ========     =========      =========
</TABLE>
 
                            See accompanying notes.
                                       F-7
<PAGE>   60
 
                            IXC COMMUNICATIONS, INC.
 
                     CONSOLIDATED STATEMENTS OF CASH FLOWS
                             (DOLLARS IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                                   YEAR ENDED DECEMBER 31,
                                                              ---------------------------------
                                                                1998        1997        1996
                                                              ---------   ---------   ---------
<S>                                                           <C>         <C>         <C>
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss....................................................  $(162,456)  $ (99,164)  $ (44,237)
Adjustments to reconcile net loss to cash provided by (used
  in) operating activities:
  Depreciation..............................................     92,822      51,929      24,509
  Amortization..............................................     21,945      18,912      12,703
  Provision for doubtful accounts and service credits.......     55,113      20,782       6,311
  Non-cash merger-related costs.............................      1,603          --          --
  Equity in net loss of unconsolidated subsidiaries.........     32,986      23,800       1,961
  Minority interest in net (income) loss of subsidiaries....        666         560         618
  Compensation expense on stock options and phantom stock...        143       1,447         254
  Extraordinary loss on early extinguishment of debt........     69,952          --          --
  Changes in operating assets and liabilities, net of
    effects of acquisitions:
    Accounts receivable.....................................    (56,393)    (70,498)    (45,958)
    Notes receivable from customers and IRU sales...........     50,770          --          --
    Other current assets....................................     (5,536)        879         660
    Accounts payable -- trade...............................    (24,804)     26,242      19,971
    Accrued liabilities and accrued service costs...........      2,533      15,903       4,436
    Deferred income taxes...................................         --        (457)     (6,135)
    Deferred charges and other non-current assets...........     (5,910)    (30,513)     (3,774)
    Unearned revenue........................................    131,143      60,092          --
    Other non-current liabilities...........................     (2,237)      1,872       5,752
                                                              ---------   ---------   ---------
      Net cash provided by (used in) operating activities...    202,340      21,786     (22,929)
                                                              ---------   ---------   ---------
CASH FLOWS FROM INVESTING ACTIVITIES:
Release of funds from escrow under 12 1/2% Senior Notes.....         --      69,564     154,244
Deposit into escrow under 12 1/2% Senior Notes..............         --     (18,152)     (7,404)
Purchase of property and equipment..........................   (476,382)   (315,853)   (136,976)
Acquisitions, net of cash acquired and common stock
  issued....................................................    (22,698)     (2,502)     (3,777)
Payments received from notes receivable.....................      5,461          --          --
Proceeds from sale of property and equipment................      2,224          --          --
Investments in unconsolidated subsidiaries..................    (31,510)    (35,497)     (7,319)
                                                              ---------   ---------   ---------
      Net cash used in investing activities.................   (522,905)   (302,440)     (1,232)
                                                              ---------   ---------   ---------
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from issuance of debt..............................    678,000          --       3,250
Net proceeds from sale of preferred stock...................    148,063     383,321          --
Principal payments on long-term debt and capital lease
  obligations...............................................   (367,788)    (11,499)    (16,679)
Payment of debt issue costs.................................    (18,063)         --      (1,301)
Redemption of preferred stock...............................       (709)         --          --
Payment of dividends........................................    (13,732)         --          --
Issuance of common stock....................................      5,267         173      94,069
Other financing activities..................................         --         424          --
                                                              ---------   ---------   ---------
      Net cash provided by financing activities.............    431,038     372,419      79,339
                                                              ---------   ---------   ---------
Effect of change in year-end from merged entities...........     (1,502)         --         537
                                                              ---------   ---------   ---------
Net increase in cash and cash equivalents...................    108,971      91,765      55,715
Cash and cash equivalents at beginning of year..............    155,855      64,090       8,375
                                                              ---------   ---------   ---------
Cash and cash equivalents at end of year....................  $ 264,826   $ 155,855   $  64,090
                                                              =========   =========   =========
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Cash paid for:
  Income taxes..............................................  $   3,739   $     516   $     706
                                                              =========   =========   =========
  Interest, net of amounts capitalized......................  $  31,052   $  30,638   $  38,082
                                                              =========   =========   =========
</TABLE>
 
                            See accompanying notes.
                                       F-8
<PAGE>   61
 
                            IXC COMMUNICATIONS, INC.
 
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                               DECEMBER 31, 1998
 
 1. ORGANIZATION AND OPERATIONS
 
     Our company, IXC Communications, Inc. and its subsidiaries, is a provider
of telecommunications services based in Austin, Texas. We are a leading provider
of telecommunications transmission, data, Internet, and switched long distance
services with a coast-to-coast digital fiber-optic network containing over 9,300
digital route miles, with additions to this network continuing to be
constructed. We provide three principal products through both wholesale and
retail distribution channels. We lease dedicated circuits to other companies for
the transmission of voice and data ("private lines"). We transmit long distance
traffic that is processed through our switches ("switched long distance
services"). Finally, we are an Internet services and backbone provider that
provides web hosting and other Internet services, frame relay and ATM-based
switched data services ("Data/Internet").
 
 2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
 
  Principles of Consolidation
 
     We are a Delaware corporation that incorporated in 1992. The accompanying
consolidated financial statements include the accounts of IXC and our
wholly-owned and majority-owned subsidiaries. Less-than-majority-owned
subsidiaries, and subsidiaries for which control is deemed to be temporary, are
accounted for using the equity method. For equity method investments, the
Company's share of income is calculated according to the Company's equity
ownership. Any differences between the carrying amount of an investment and the
amount of the underlying equity in the net assets of the investee are amortized
over the expected life of the investment. Significant intercompany accounts and
transactions have been eliminated in the consolidated financial statements.
Investments over which we do not exercise significant influence over financial
or operating policies are reported using the cost method.
 
     On June 3, 1998, the Company acquired Eclipse Telecommunications, Inc.
("Eclipse", formerly named Network Long Distance, Inc.) in a transaction
accounted for as a pooling of interests. All prior period consolidated financial
statements presented have been restated to include the combined results of
operations, financial position and cash flows of Eclipse as though it had always
been a part of IXC.
 
  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 revenue and expense during each reporting
period. Actual results could differ from those estimates.
 
  Cash and Cash Equivalents
 
     Cash and cash equivalents include cash on hand, money market funds and all
investments with an initial maturity of three months or less. All cash
equivalents are recorded at cost and classified as available for sale.
 
  Property and Equipment
 
     Property and equipment, including items acquired under capital lease
arrangements, are recorded at cost. Depreciation is provided using the
straight-line method over the estimated useful lives of the various assets,
ranging from three to twenty years. Depreciation begins the month after an asset
is placed in service. Purchases of fiber usage rights from other carriers are
recorded at cost and are depreciated over the lesser of the term of the related
agreement or the estimated life of the fiber optic cable. Maintenance and
repairs are charged to operations as incurred. Costs associated with uncompleted
portions of the fiber optic network are
 
                                       F-9
<PAGE>   62
                            IXC COMMUNICATIONS, INC.
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1998
 
classified as construction in progress. Upon completion, the costs will be
classified as transmission systems and depreciated over their useful lives.
 
     Interest is capitalized as part of the cost of constructing the fiber optic
network and for amounts invested in companies or joint ventures accounted for
using the equity method during pre-operating periods. Interest capitalized
during construction periods is computed by determining the average accumulated
expenditures for each interim capitalization period and applying an average
effective interest rate. Total interest capitalized during the years ended
December 31, 1998, 1997, and 1996 was $16.2 million, $7.3 million, and $2.9
million, respectively.
 
     We review long-lived assets for impairment by comparing the undiscounted
cash flows estimated to be generated by those assets with the related carrying
amount of the assets. Upon an indication of an impairment, a loss is recorded if
the discounted cash flows projected for the assets is less than the assets'
carrying value.
 
     The Company's property and equipment consisted of the following as of
December 31, 1998 and 1997 (in thousands):
 
<TABLE>
<CAPTION>
                                                                 1998         1997
                                                              ----------    ---------
<S>                                                           <C>           <C>
Land and rights of way......................................  $    3,997    $   4,201
Buildings and improvements..................................      38,966       22,006
Transmission systems........................................     905,747      446,255
Furniture, vehicles and other...............................      12,211       10,348
Fiber usage rights..........................................      98,882       34,991
Construction in process.....................................     133,852      216,481
                                                              ----------    ---------
                                                               1,193,655      734,282
Less: Accumulated depreciation and amortization.............    (209,979)    (120,408)
                                                              ----------    ---------
      Property and equipment, net...........................  $  983,676    $ 613,874
                                                              ==========    =========
</TABLE>
 
  Deferred Charges and Other Non-current Assets
 
     Deferred charges consist of deferred financing costs, deferred network
costs, deferred customer acquisition costs, and goodwill. Deferred financing
costs are costs incurred in connection with obtaining long-term financing; such
costs are amortized as interest expense over the terms of the related debt
agreements. Certain costs incurred with the connection of customers to the
switched long distance network and the acquisition costs of retail customer
accounts obtained through an outside sales organization were deferred and are
amortized on a straight-line basis over two years. Goodwill associated with
acquisitions is amortized over the life of that intangible. As of December 31,
1998, all goodwill is being amortized over 5 years. During 1997 and 1996,
non-cash charges were recorded to reduce the carrying amount of certain customer
acquisition costs and goodwill; such write-downs amounted to approximately $4.0
million in 1997 and $6.3 million in 1996 and are included in amortization
expense. Accumulated amortization on all intangible assets amounted to $37.7
million and $13.8 million at December 31, 1998 and 1997, respectively.
 
  Revenue
 
     Private line voice and data circuit revenue is generated primarily by
providing capacity on the fiber optic and microwave transmission networks at
rates established under long-term contractual arrangements or on a
month-to-month basis after contract expiration. Revenue is recognized as
services are provided.
 
                                      F-10
<PAGE>   63
                            IXC COMMUNICATIONS, INC.
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1998
 
     Switched long-distance service revenue is generated primarily by providing
voice communication services. Revenue is generally based on usage and recognized
as services are provided. Customers are billed monthly after services are
rendered.
 
     Data/Internet revenue is generated by providing a number of services,
including Internet service, web hosting and consulting. Revenue is recognized as
services are provided. Customers are billed monthly, generally after the service
is provided.
 
     Sales of indefeasible rights to use fiber or capacity ("IRU") are recorded
as unearned revenue at the earlier of the acceptance of the applicable portion
of the network by the customer or the receipt of cash. The revenue is recognized
over the life of the agreement as services are provided beginning on the date of
customer acceptance. IRU revenue and related maintenance revenue is included in
private line revenue in the accompanying statement of operations. During 1998
revenue related to the sale of options in fibers that were jointly owned with
another carrier was reported as other operating revenue, net of our basis in the
options.
 
  Fiber Exchange Agreements
 
     In connection with the fiber optic network expansion, we entered into
various agreements to exchange fiber usage rights. Non-monetary exchanges of
fiber usage are recorded at the cost of the asset transferred or, if applicable,
the fair value of the asset received. We account for agreements to exchange
fiber for capacity with other carriers by recognizing the fair value of the
revenue earned and expense incurred under the respective agreements. Exchange
agreements accounted for non-cash revenue and expense (in equal amounts) of
$19.1 million in 1998, $14.0 million in 1997, and $14.0 million in 1996.
 
  Income Taxes
 
     Deferred income taxes are provided for net operating losses and for
temporary differences between the basis of assets and liabilities for financial
reporting and income tax reporting. Investment tax credits are accounted for by
the flow-through method.
 
  Stock-Based Compensation
 
     We account for employee stock options under Accounting Principles Board
Opinion No. 25, "Accounting for Stock Issued to Employees" ("APB 25") and
related interpretations. Under APB 25 compensation expense is recognized when
the exercise price of employee stock options is less than the market price of
the underlying stock on the date of grant.
 
  Basic and Diluted Loss Per Share
 
     Basic earnings per share is calculated using the weighted average number of
common shares outstanding, excluding any dilutive effects of options, warrants
and convertible securities. Diluted earnings per share includes the weighted
average number of common shares outstanding and the number of common equivalent
shares which would be issued related to options and convertible securities using
the treasury method, unless such additional shares are anti-dilutive.
 
  Reclassifications
 
     We reclassified certain amounts for prior years to conform to the current
year presentation.
 
                                      F-11
<PAGE>   64
                            IXC COMMUNICATIONS, INC.
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1998
 
 3. ACQUISITIONS
 
  Eclipse Merger
 
     On June 3, 1998, we completed the acquisition of Eclipse through a merger
of a subsidiary with Eclipse, by exchanging approximately 4,051,970 shares of
our common stock for all of the outstanding common stock of Eclipse. Each share
of Eclipse common stock was exchanged for .2998 shares of our common stock. In
addition, outstanding Eclipse stock options were converted at the same exchange
factor into options to purchase shares of our common stock.
 
     The merger constituted a tax-free reorganization and has been accounted for
as a pooling of interests. Accordingly, all prior period consolidated financial
statements have been restated to show our results of operations, financial
position and cash flows combined with Eclipse. Prior to the merger, Eclipse
utilized a March 31 fiscal year end. For purposes of the combined results of
operations for the years ended December 31, 1997 and 1996, the amounts include
Eclipse's historical results of operations for the years ended March 31, 1998
and 1997, respectively. In order to report cash flow for 1998, a $1.5 million
adjustment is included in the 1998 statements of stockholders' equity(deficit)
and cash flows, representing Eclipse's first quarter 1998 net income, which is
in both the beginning retained earnings balance and the fiscal 1998 net income
amount. We had no transactions with Eclipse prior to the merger; however,
certain reclassifications, primarily related to the presentation of certain
excise taxes and bad debt provisions, were made to conform Eclipse's accounting
policies to our accounting policies. The results of operations for the separate
companies and the combined amounts presented in the restated consolidated
financial statements follow (in thousands):
 
<TABLE>
<CAPTION>
                                               ECLIPSE      IXC      ADJUSTMENTS   COMBINED
                                               --------   --------   -----------   --------
<S>                                            <C>        <C>        <C>           <C>
1997
Operating revenue............................  $105,823   $420,710     $(4,916)    $521,617
Operating expenses...........................   110,204    465,945      (4,992)     571,157
Net income (loss)............................    (4,609)   (94,555)         --      (99,164)
1996
Operating revenue............................  $ 86,005   $203,761     $(7,799)    $281,967
Operating expenses...........................    91,933    217,777      (7,799)     301,911
Net income (loss)............................    (6,789)   (37,448)         --      (44,237)
</TABLE>
 
     A reconciliation of the Company's historical loss per share to the loss per
share as restated due to the Eclipse merger is as follows:
 
<TABLE>
<CAPTION>
                                                               1997     1996
                                                              ------   ------
<S>                                                           <C>      <C>
Loss per share, as previously reported......................  $(3.75)  $(1.42)
Effect of Eclipse's income (loss)...........................   (0.15)   (0.25)
Effect of change in weighted average shares
  Outstanding...............................................    0.43     0.15
                                                              ------   ------
          Restated basic and diluted loss per share.........  $(3.47)  $(1.52)
                                                              ======   ======
</TABLE>
 
     The effect of change in the weighted average shares outstanding represents
the addition of shares issued to Eclipse's former shareholders in order to
complete the merger. The effect of Eclipse's income (loss) represents the impact
of adding Eclipse's net income or loss to our historical results.
 
     We recorded in 1998 a charge of $8.0 million for merger related costs,
including professional services associated with the merger, termination costs
associated with duplicate functions, costs of exiting excess office space, and
the write-off of duplicate equipment and software.
 
                                      F-12
<PAGE>   65
                            IXC COMMUNICATIONS, INC.
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1998
 
  Other Acquisitions
 
     Prior to the merger with Eclipse, both we and Eclipse had entered into
several business combinations and customer base acquisitions. Certain of those
combinations were accounted for using the pooling of interests method, and the
results of operations of those acquired businesses are included herein for all
periods presented. The results of operations of other businesses acquired
through purchase transactions are included herein for only the periods
subsequent to their respective purchase. No pro forma financial information for
any of the business combinations has been presented in these consolidated
financial statements as the revenue, results of operations, and assets of the
previously acquired businesses are not material.
 
     The acquisitions recorded as purchases were paid for with cash or common
stock. The consideration paid and assets acquired during the years ended
December 31, 1998, 1997, and 1996 are as follows (in thousands):
 
<TABLE>
<CAPTION>
                                                        1998        1997       1996
                                                      --------    --------    -------
<S>                                                   <C>         <C>         <C>
Fair value of tangible assets acquired..............  $ 10,822    $    (85)   $   776
Liabilities assumed.................................    (3,362)         --         --
Excess of cost over net assets acquired.............    29,761      26,039      4,863
Value of common stock issued........................   (14,523)    (23,452)    (1,862)
                                                      --------    --------    -------
          Cash paid for acquisitions................  $ 22,698    $  2,502    $ 3,777
                                                      ========    ========    =======
</TABLE>
 
  Pending Coastal Acquisition
 
     In January 1999 we entered into an agreement to purchase Coastal Telephone
Company for approximately $100 million, of which $25 million is anticipated to
be paid in stock. Coastal is a retail long distance reseller. Closing is
expected to occur in the second quarter of 1999 and is subject to certain terms
and conditions.
 
 4. NOTES RECEIVABLE
 
     We sold an IRU to a customer in 1996. The customer elected to pay for the
IRU with a series of notes. Notes amounting to $94.1 million were agreed to by
the customer in 1998, of which $45.0 million was received in 1998. The remaining
balance due at December 31, 1998, was $49.1 million, of which $48.0 million is
classified as current. The notes bear interest at 12% and are payable in 6
quarterly installments beginning on the date the applicable portion of the IRU
was accepted. In March 1999, the customer repaid the total amount of the note.
 
     We sold a $14.1 million capacity IRU to a customer in 1998. The customer
agreed to pay for the IRU with $3.0 million in cash and an $11.1 million note.
We received $1.0 million in payments on the note in 1998. The remaining $10.1
million of the note is due in 1999 and is classified as a current note
receivable.
 
     We accepted a $14.9 million note receivable from Westel, a partner in the
Marca-Tel investment, to repay us for certain contributions previously made to
Progress International, LLC, which holds the investment in Marca-Tel. The note
is secured by Westel's interest in Progress. The note bears interest at 12%, and
$9.4 million is outstanding and classified as current at December 31, 1998.
 
                                      F-13
<PAGE>   66
                            IXC COMMUNICATIONS, INC.
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1998
 
 5. INVESTMENTS IN UNCONSOLIDATED SUBSIDIARIES
 
     Investments in and advances to unconsolidated subsidiaries accounted for
using the equity method are as follows at December 31, 1998 and 1997 (in
thousands):
 
<TABLE>
<CAPTION>
                                                                   BALANCE OF INVESTMENTS
                                                                        AND ADVANCES
                                                      OWNERSHIP    -----------------------
                                                      INTEREST        1998         1997
                                                      ---------    ----------    ---------
<S>                                                   <C>          <C>           <C>
Marca-Tel S.A. de C.V...............................    24.5%       $(11,827)     $11,638
Applied Theory, Inc.................................      34%         10,727           --
Unidial Communications, Services, LLC...............      20%          7,931           --
Storm Telecommunications Ltd........................      40%          2,674        5,859
                                                                    --------      -------
          Total.....................................                $  9,505      $17,497
                                                                    ========      =======
</TABLE>
 
     The combined results of operations and financial position from all the
investees accounted for using the equity method during 1998 as well as the
Company's share of their income (loss) are summarized below (in thousands):
 
<TABLE>
<CAPTION>
                                                        1998        1997       1996
                                                      --------    --------    -------
<S>                                                   <C>         <C>         <C>
COMBINED RESULTS OF OPERATIONS:
Net revenue.........................................  $ 51,162    $  5,786    $    --
Gross profit(loss)..................................     7,071      (4,556)    (3,110)
Net loss............................................   (37,378)    (23,395)    (3,120)
IXC's share of losses from equity-method
  investees.........................................  $(23,477)   $(23,800)   $(1,961)
IXC's share of loss from PSINet investment..........    (9,509)         --         --
                                                      --------    --------    -------
Losses from equity-method investments...............  $(32,986)   $(23,800)   $(1,961)
                                                      ========    ========    =======
COMBINED BALANCE SHEET DATA:
Current assets......................................  $ 49,275    $ 10,123
Non-current assets..................................    97,989      80,351
Current liabilities.................................    60,455      18,431
Non-current liabilities.............................    78,454      51,831
</TABLE>
 
  Marca-Tel
 
     At December 31, 1998, we indirectly owned 24.5% of Marca-Tel S.A. de C.V.
("Marca-Tel") through our ownership of 50% of Progress, which owned 49% of
Marca-Tel. The remaining 51% of Marca-Tel was owned by a Mexican individual and
Formento Radio Beep, S.A. de C.V. ("Radio Beep"). The other 50% of Progress was
owned by Westel International, Inc. ("Westel"). In June 1998 we obtained a note
receivable from Westel for $14.9 million of advances that we had made to
Progress International on Westel's behalf. The note receivable from Westel is
secured by a portion of Westel's investment in Progress. During the fourth
quarter of 1998 we ceased recognition of additional losses from Marca-Tel since
our investment in Marca-Tel, net of the note receivable from Westel, was reduced
to a negative amount. See Note 20 for discussion of matters related to the
Westel note in March 1999.
 
  Applied Theory, Inc.
 
     In May 1998 we purchased a 34% interest in Applied Theory Communications,
Inc., a New York-based Internet Service Provider. Applied Theory, Inc. was
formed in 1996 to provide high quality Internet services
 
                                      F-14
<PAGE>   67
                            IXC COMMUNICATIONS, INC.
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1998
 
for the New York state research and education community. During 1998 we invested
almost $13 million in Applied Theory, Inc.
 
  UniDial Communications Services, LLC
 
     In December 1997 we formed a joint venture with UniDial Communications to
sell UniDial products over our network. The joint venture is named UniDial
Communications Services, LLC. We provide the joint venture with a full range of
voice, video, Internet, and data services which are private labeled under the
UniDial Communications name. The products are marketed through a full-time
national sales force of UniDial Communications network consultants.
 
  Storm Telecommunications Ltd.
 
     In October 1997, Storm Telecommunications, Ltd. was formed. Storm is a
joint venture with Telenor AS, the Norwegian national telephone company, to
provide telecommunication services to carriers and resellers in Europe. The
joint venture is owned 40 percent by us, 40 percent by Telenor Global Services
AS, and 20 percent by Clarion Resources Communications Corporation, a U.S.-based
telecommunications company in which Telenor owns a controlling interest. We have
two out of five seats on the joint venture's board.
 
 6. MARKETABLE SECURITIES
 
  Investment in PSINet Common Stock.
 
     In February 1998 we entered into an agreement to provide PSINet an IRU in
10,000 miles of OC-48 transmission capacity on our network over a 20-year period
in exchange for approximately 10.2 million shares of PSINet's common stock. The
agreement provided that PSINet would pay us additional cash or common stock if
the market value of the 10.2 million shares did not reach $240 million within a
specified time. In January 1999 the value of PSINet's common stock exceeded the
$240 million valuation threshold, thereby eliminating any obligation of PSINet
to make any additional payments. The market value of the 10.2 million shares at
March 30, 1999 was $448.2 million. These shares may be sold by us or pledged as
collateral against indebtedness. The amount of fair value which exceeds the $240
million threshold will be credited to stockholders' equity going forward.
 
     From February 1998 through May 1998 we accounted for the investment in
PSINet using the equity method since we considered ourselves to have significant
influence over PSINet based upon our level of ownership and control. We
recognized losses of approximately $9.5 million during that period. In June 1998
we changed from the equity method to the cost method due to a change in the
level of ownership and control. At December 31, 1998, our investment in PSINet
was carried at $202.1 million and is included in non-current marketable
securities in the accompanying consolidated balance sheet. The fair value of the
investment as of December 31, 1998, was $211.6. The difference between the fair
value of the investment and the carrying value results from losses recognized
when the investment was accounted for using the equity method.
 
     A corresponding balance of $210.7 million is included in unearned revenue
because PSINet agreed to either pay us in cash or stock an amount up to $240
million for the IRU if the shares' value was less than $240 million. The amount
in unearned revenue is being recognized as IRU revenue over the 20-year life of
the agreement as the capacity is delivered. Additionally, we began receiving a
maintenance fee that, as the full capacity is used by PSINet, is expected to
increase to approximately $11.5 million per year.
 
                                      F-15
<PAGE>   68
                            IXC COMMUNICATIONS, INC.
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1998
 
  Investment in DCI Telecommunications, Inc. Common Stock
 
     In November 1998 we entered into an agreement to acquire common stock of
DCI Telecommunications, Inc. ("DCI"), as consideration for payment of amounts
due from on of our customers that was also a vendor of DCI. The agreement
provides that DCI will issue us additional common stock if the market value of
the shares does not reach $18 million by June 1, 1999. The investment in DCI is
included in non-current marketable securities in the accompanying consolidated
balance sheet. The fair value of the investment is equal to the carrying value
due to the guarantee to receive additional shares if the price of the stock is
outside a specified range.
 
 7. LONG-TERM DEBT AND CAPITAL LEASE OBLIGATIONS
 
     Long-term debt and capital lease obligations consisted of the following at
December 31, 1998 and 1997 (in thousands):
 
<TABLE>
<CAPTION>
                                                                1998        1997
                                                              --------    --------
<S>                                                           <C>         <C>
Amounts due under Revolving Credit Facility.................  $200,000    $     --
9% Senior Subordinated Notes................................   450,000          --
NTFC Credit Facility........................................    23,800          --
12 1/2% Senior Notes, net of unamortized discount of $6,862
  in 1997...................................................       815     278,138
Capital lease obligations...................................    16,115      36,595
Other debt..................................................     2,270       6,014
                                                              --------    --------
          Total long-term debt and capital lease
            obligations.....................................   693,000     320,747
Less current portion........................................   (13,984)    (12,294)
                                                              --------    --------
Long-term debt and capital lease obligations................  $679,016    $308,453
                                                              ========    ========
</TABLE>
 
  Revolving Credit Facility
 
     In October 1998 we entered into a $600 million credit facility with a
syndicate of financial institutions. The credit facility provides for: 1) a $150
million revolving loan facility (which also includes letter of credit
availability of up to $20 million); 2) a term loan facility in the amount of
$200 million; and 3) an uncommitted special-purpose loan facility that can be
used under certain terms and conditions. Loans outstanding under the credit
facility bear interest at either LIBOR or the lead commercial bank's prime rate
plus applicable margins. At December 31, 1998, we selected the LIBOR option
resulting in a combined interest rate of 7.75%. The facility has a five-year
term and is secured by the assets of certain of our subsidiaries. In October
1998, we drew down $200 million under the facility, net of $4.2 million of
transaction costs. We must comply with various financial and other covenants on
an ongoing basis in addition to meeting the covenants on a pro forma basis prior
to drawing additional amounts under the credit facility. Certain of the
covenants become more restrictive over time. From time to time we have
discussions with the commercial banks to ensure that we will remain in
compliance with these covenants on a prospective basis.
 
  9% Senior Subordinated Notes
 
     In 1998 we issued $450.0 million of 9% Senior Subordinated Notes due 2008
(the "9% Notes"). In connection with the sale of the 9% Notes, we announced a
tender offer to purchase for cash all of the outstanding 12 1/2% Senior Notes.
The 9% Notes are general unsecured obligations and are subordinate in right of
payment to all existing and future senior indebtedness and other liabilities of
our subsidiaries. The indenture related to the 9% Notes requires us to comply
with various financial and other covenants and restricts us from incurring
certain additional indebtedness.
 
                                      F-16
<PAGE>   69
                            IXC COMMUNICATIONS, INC.
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1998
 
  12 1/2% Senior Notes
 
     In a tender offer in 1998, $284.2 million (out of $285.0 million) in
aggregate principal amount of the 12 1/2% Senior Notes was tendered and accepted
for payment. The 12 1/2% Senior Notes indenture was amended to eliminate
substantially all of its restrictive covenants and guarantees. We used
approximately $342.7 million of the $435.6 million net proceeds of the 9% Notes
offering to pay the tender offer price for the 12 1/2% Senior Notes. With the
early extinguishment of the 12 1/2% Senior Notes a net charge of approximately
$67.0 million was recorded as an extraordinary item in 1998.
 
  NTFC Credit Facility
 
     In 1997 we entered into a $28 million secured equipment financing facility
with NTFC Capital Corporation. Advances borrowed under this facility bear
interest at 8.85% and are due in 2003.
 
  Capital Leases
 
     We have acquired certain facilities and equipment using capital leases. The
gross amount of assets recorded under capital leases at December 31, 1998 and
1997 was $41.7 million and $39.6 million, respectively. The related accumulated
depreciation was $25.0 million and $17.9 million at December 31, 1998 and 1997,
respectively.
 
     Annual maturities of long-term debt and minimum payments under capital
leases for the five years subsequent to December 31, 1998, are as follows (in
thousands):
 
<TABLE>
<CAPTION>
                                                      LONG-TERM    CAPITAL
                                                        DEBT       LEASES      TOTAL
                                                      ---------    -------    --------
<S>                                                   <C>          <C>        <C>
1999................................................  $  7,870     $ 7,624    $ 15,494
2000................................................     5,600       6,177      11,777
2001................................................     5,600       3,506       9,106
2002................................................     5,600         839       6,439
2003................................................   201,400         162     201,562
Thereafter..........................................   450,815          --     450,815
                                                      --------     -------    --------
                                                       676,885      18,308     695,193
Less amounts related to interest....................        --      (2,193)     (2,193)
                                                      --------     -------    --------
                                                       676,885      16,115     693,000
Less current portion................................    (7,870)     (6,114)    (13,984)
                                                      --------     -------    --------
                                                      $669,015     $10,001    $679,016
                                                      ========     =======    ========
</TABLE>
 
 8. REDEEMABLE PREFERRED STOCK
 
  7 1/4% Junior Convertible Preferred Stock Due 2007
 
     In 1997 we issued $100 million (1,000,000 shares) of 7 1/4% Junior
Convertible Preferred Stock Due 2007. The 7 1/4% Convertible Preferred Stock is
convertible at the option of the holder into shares of common stock at a
conversion rate of 4.263 shares of common stock for each share of 7 1/4%
Convertible Preferred Stock. On March 31, 2007, the 7 1/4% Convertible Preferred
Stock must be redeemed at a price equal to the liquidation preference ($100 per
share) plus accrued and unpaid dividends. Because it is mandatorily redeemable,
it is not included in stockholders' equity. Dividends payable on or before March
31, 1999 are payable in either cash or additional shares of 7 1/4% Convertible
Preferred Stock. Thereafter, dividends will accrue at 8 3/4% if we elect to pay
the dividend through the issuance of additional shares of 7 1/4% Convertible
Preferred Stock. The difference
 
                                      F-17
<PAGE>   70
                            IXC COMMUNICATIONS, INC.
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1998
 
between the carrying value of the 7 1/4% Convertible Preferred Stock and its
redemption value is being accreted to additional paid-in-capital through the
mandatory redemption date; the accretion is included in dividends applicable to
preferred stock.
 
  12 1/2% Junior Exchangeable Preferred Stock Due 2009
 
     In 1997 we issued $300 million (300,000 shares) of 12 1/2% Junior
Exchangeable Preferred Stock Due 2009. We may elect to exchange all of the
12 1/2% Exchangeable Preferred Stock for 12 1/2% Subordinated Exchange
Debentures Due 2009 ("Exchange Debentures"). The exchange would be made based on
a principle amount equal to the liquidation preference of the 12 1/2%
Exchangeable Preferred Stock at the time of the exchange. If exchanged, the
Exchange Debentures will bear interest at the rate of 12 1/2%. The Exchange
Debentures would be general unsecured obligations and would be subordinated in
right of payment to all existing and future senior indebtedness. On August 15,
2009, the 12 1/2% Exchangeable Preferred Stock must be redeemed at a price equal
to its liquidation preference ($1,000 a share) plus accrued and unpaid
dividends. Because it is mandatorily redeemable, it not included in
stockholders' equity. Dividends on the 12 1/2% Exchangeable Preferred Stock
accrue at 12 1/2% of the liquidation preference (including unpaid dividends) and
are payable quarterly in arrears. Dividends payable prior to or on February 15,
2001, may be paid in either cash or additional shares of 12 1/2% Exchangeable
Preferred Stock. After February 15, 2001, dividends on the 12 1/2% Exchangeable
Preferred Stock may be paid only in cash. The difference between the carrying
value and the redemption value of the 12 1/2% Exchangeable Preferred Stock is
being accreted to additional paid-in-capital through the mandatory redemption
date; the accretion is included in dividends applicable to preferred stock.
 
 9. STOCKHOLDERS' EQUITY
 
  Common Stock
 
     During 1996, we issued 6,440,000 shares of common stock in an initial
public offering and a private placement, resulting in net proceeds of $94.1
million. At December 31, 1998, we had reserved common shares for future issuance
as follows:
 
<TABLE>
<S>                                                           <C>
Shares reserved for issuance under stock option plans.......   6,420,137
7 1/4% Convertible Preferred Stock..........................   4,580,594
6 3/4% Cumulative Convertible Preferred Stock...............   2,134,377
                                                              ----------
          Total.............................................  13,135,108
                                                              ==========
</TABLE>
 
  Stockholder Rights Plan
 
     In September 1998 the Board of Directors declared a dividend of one
Preferred Share Purchase Right (a "Right") on each outstanding share of its
Common Stock. Each Right entitles the holder to buy one
one-thousandth of a share of new Series A Junior Participating Preferred Stock
at an exercise price of $210.00 per Right. The Rights will be exercisable if a
person or group acquires 20% or more of the common stock (or if a stockholder
currently holding more than 20% of the outstanding stock acquires any additional
shares of common stock) or announces a tender offer for 20% or more of the
common stock. We will be entitled to redeem the Rights at one cent per Right at
any time before any such person acquires 20% or more of the outstanding common
stock. Each Right will entitle its holder to purchase, at the Right's exercise
price, a number of shares of common stock having a market value at that time of
twice the Right's exercise price. Rights held by the 20% or more holder will
become void and will not be exercisable to purchase shares at the bargain
purchase price. If we are acquired after a person acquires 20% or more of our
common stock, each Right will entitle its holder to purchase, at the Right's
then-current exercise price, a number of the acquiring company's common shares
having a market value at that time of twice the Right's exercise price. The
dividend
 
                                      F-18
<PAGE>   71
                            IXC COMMUNICATIONS, INC.
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1998
 
distribution was payable to stockholders of record on September 20, 1998. The
Rights will expire on September 20, 2008.
 
  6 3/4% Cumulative Convertible Preferred Stock
 
     In 1998 we sold 155,250 shares of 6 3/4% Cumulative Convertible Preferred
Stock for gross proceeds of $155.3 million. The 6 3/4% Convertible Preferred
Stock can be converted at any time at the option of the holder into Common
Stock. The conversion rate is 13.748 shares of common stock per share of 6 3/4%
Convertible Preferred Stock. Dividends on the 6 3/4% Convertible Preferred Stock
are payable quarterly in arrears in cash or common stock commencing on July 1,
1998.
 
  Junior Series 3 Cumulative Redeemable Preferred Stock
 
     In 1997 and 1998 we redeemed the Junior Series 3 Cumulative Redeemable
Preferred Stock by exchanging it for shares of common stock. Holders of Junior
Series 3 Cumulative Redeemable Preferred Stock received approximately 49.85
shares of common stock for each share of Junior Series 3 Cumulative Redeemable
Preferred Stock.
 
  Stock-Based Compensation
 
     We adopted several stock option plans that provide for the issuance of
non-qualified or incentive stock options to employees and directors. Options
under these plans are generally awarded at the discretion of the Board of
Directors and generally are awarded with exercise prices at least equal to the
fair market value of the underlying common stock at the date of grant. Certain
options granted in 1996 under one plan were granted at an exercise prices less
than fair market value, resulting in the recognition of additional compensation
expense of $0.1 million in 1998, $0.2 million in 1997, and $0.2 million in 1996.
Options generally expire after 10 years and vest over periods ranging from three
to five years. In the event of a change in control, certain of the options
outstanding will vest fully.
 
     In 1996 we adopted a phantom stock plan (the "Directors' Plan"), pursuant
to which $20,000 per year of outside director's fees for certain directors is
deferred and treated as if it were invested in shares of our common stock. Prior
to 1998 no shares of common stock were actually purchased and the participants
receive cash benefits equal to the value of the shares that they are deemed to
have purchased under the Directors' Plan. Distribution of benefits generally
will occur three years after the deferral. Compensation expense is determined
based on the market price of the shares deemed to have been purchased and is
charged to expense over the related period. In 1998, 1997 and 1996, the Company
recognized $.1 million, $.1 million and $.1 million as compensation expense
related to the Directors' Plan. We amended the Directors' Plan in 1998 to allow
benefits to be paid in either cash or shares of common stock.
 
     Prior to the pooling-of-interests transaction Eclipse granted stock options
to various parties from time to time. The terms and conditions of the Eclipse
options, including exercise prices and option expiration periods, were set by
Eclipse's board of directors. In connection with the Eclipse merger, all
outstanding Eclipse options were converted into substitute options at an
exchange rate of .2998 IXC option for each Eclipse option. Such substitute
options provided for substantially the same terms and conditions as the original
Eclipse options. Under the terms of a stock option agreement with a former
officer of a subsidiary of Eclipse, a $1.1 million charge for compensation was
recorded in fiscal 1997.
 
     We account for employee stock options under APB 25 and only make fair value
disclosures for option grants. The fair value disclosures assumes that fair
value for option grants was calculated at the date of grant using the
Black-Scholes option pricing model with the following assumptions: risk-free
interest rates of 5.6% in 1998, from 5.2% to 6.4% in 1997, and 5.3% to 6.7% in
1996; no dividend yield; volatility of .804 in
 
                                      F-19
<PAGE>   72
                            IXC COMMUNICATIONS, INC.
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1998
 
1998, .551 in 1997 and .523 for 1996 (for Eclipse options, fair value was
calculated assuming volatility factors of .376 in 1997 and .478 in 1996); and
expected option lives of 4 years.
 
     For purposes of pro forma disclosures, the estimated fair value of the
options is amortized to expense over the options' vesting period. Pro forma loss
per share information is as follows (in thousands except for loss per share
information):
 
<TABLE>
<CAPTION>
                                                     1998         1997         1996
                                                   ---------    ---------    --------
<S>                                                <C>          <C>          <C>
Pro forma loss applicable to common
  stockholders...................................  $(237,008)   $(125,564)   $(46,791)
Pro forma basic and diluted loss per share.......      (6.61)       (3.61)      (1.55)
</TABLE>
 
     Stock option activity and related information for the years ended December
31, 1998, 1997, and 1996 are as follows:
 
<TABLE>
<CAPTION>
                                  1998                      1997                      1996
                         ----------------------    ----------------------    ----------------------
                                       WEIGHTED                  WEIGHTED                  WEIGHTED
                                       AVERAGE                   AVERAGE                   AVERAGE
                                       EXERCISE                  EXERCISE                  EXERCISE
                          OPTIONS       PRICE       OPTIONS       PRICE       OPTIONS       PRICE
                         ----------    --------    ----------    --------    ----------    --------
<S>                      <C>           <C>         <C>           <C>         <C>           <C>
Outstanding at
  beginning of year....   3,144,947     $17.12      2,018,961     $11.90      1,006,240     $11.67
Granted................   3,199,401      34.34      1,324,347      25.43      1,165,333      12.55
Exercised..............    (594,107)      8.87        (62,976)     11.22        (19,702)      3.01
Forfeited..............    (305,729)     25.01       (135,385)     24.16       (132,910)     17.02
                         ----------                ----------                ----------
Outstanding at end of
  year.................   5,444,512      22.71      3,144,947      17.12      2,018,961      11.90
                         ==========                ==========                ==========
Exercisable at end of
  year.................   1,140,334                   984,742                   525,948
                         ==========                ==========                ==========
Weighted average fair
  value of options
  granted during the
  year.................  $    21.96                $    14.67                $     7.50
                         ==========                ==========                ==========
</TABLE>
 
     The following table summarizes outstanding options at December 31, 1998, by
price range:
 
<TABLE>
<CAPTION>
                               OUTSTANDING                         EXERCISABLE
               -------------------------------------------    ---------------------
                                   WEIGHTED     WEIGHTED                   WEIGHTED
                                   AVERAGE       AVERAGE                   AVERAGE
                   RANGE OF        EXERCISE    CONTRACTUAL                 EXERCISE
   OPTIONS     EXERCISE PRICES      PRICE         LIFE         OPTIONS      PRICE
  ---------    ----------------    --------    -----------    ---------    --------
  <C>          <S>                 <C>         <C>            <C>          <C>
    555,433    $3.01                $ 3.01         6.0          457,316     $ 3.01
    131,426    $15.38 to $26.25      15.38         6.8           76,155      15.38
  2,113,408    $15.38 to $26.28      22.08         9.1          324,972      22.18
  1,318,219    $26.29 to $36.88      29.54         8.5          281,891      29.03
    562,026    $36.89 to $45.00      42.17         8.8               --         --
    764,000    $45.00 to $60.00      51.46         8.6               --         --
  ---------                                                   ---------
  5,444,512    $ 3.01 to $60.00      22.71         8.4        1,140,334      15.73
  =========                                                   =========
</TABLE>
 
10. LOSS PER SHARE
 
     No potentially dilutive securities were included in the basic and diluted
loss per share calculation as they would have been anti-dilutive. The following
table summarizes additional common shares that would, if converted, dilute
earnings. The number of common shares for each item is based on the number of
potentially dilutive securities outstanding as of the end of the year presented.
The figures presented for the 6 3/4% Converti-
 
                                      F-20
<PAGE>   73
                            IXC COMMUNICATIONS, INC.
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1998
 
ble Preferred Stock and the 7 1/4% Convertible Preferred Stock assume that each
preferred share was converted into 13.748 common shares and 4.263 common shares,
respectively. Certain shares of common stock were held in escrow under the terms
of purchase agreements related to acquisitions made during 1995 and 1996.
Additionally, shares are held in escrow related to certain former owners of our
Eclipse subsidiary. All shares held in escrow are excluded from the calculation
of weighted average shares outstanding.
 
<TABLE>
<CAPTION>
                                                      1998         1997         1996
                                                   ----------    ---------    ---------
<S>                                                <C>           <C>          <C>
7 1/4% Convertible Preferred Stock...............   4,580,594    4,499,030           --
6 3/4% Convertible Preferred Stock...............   2,134,377           --           --
Stock options....................................   5,444,512    3,149,947    2,018,961
Stock in escrow from acquisitions................      26,008       26,008       26,008
Other stock in escrow............................      93,941       93,941      187,881
                                                   ----------    ---------    ---------
          Total additional common share
            equivalents..........................  12,279,432    7,768,926    2,232,850
                                                   ==========    =========    =========
</TABLE>
 
11. CONCENTRATIONS OF CREDIT RISK AND MAJOR CUSTOMERS
 
     Financial instruments that potentially create concentrations of credit risk
consist primarily of cash equivalents and trade receivables. We place cash
equivalents in quality investments with reputable financial institutions.
 
     We may be subject to credit risk due to concentrations of receivables from
companies which are telecommunications providers, Internet service providers,
and cable television companies. We perform ongoing credit evaluations of
customers' financial condition and we typically do not require a significant
amount of collateral.
 
     Revenue from Excel Communications amounted to 14%, 23%, and 25% of total
revenue for each of the years ended December 31, 1998, 1997 and 1996. In 1998
the revenue was generated 11% in the long distance segment and 3% in the private
line segment. In 1997 and 1996 the revenue was generated in the long distance
segment only. In addition, MCIWorldCom accounted for 6.6% of 1998 revenue, all
of which was private line revenue.
 
                                      F-21
<PAGE>   74
                            IXC COMMUNICATIONS, INC.
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1998
 
12. INCOME TAXES
 
     Deferred income taxes reflect the tax effects of temporary differences
between the carrying amounts of assets and liabilities for financial reporting
purposes and the amounts used for income tax purposes. Significant components of
deferred tax assets and liabilities are as follows as of December 31, 1998 and
1997 (in thousands):
 
<TABLE>
<CAPTION>
                                                                1998         1997
                                                              ---------    --------
<S>                                                           <C>          <C>
DEFERRED TAX ASSETS:
  Tax credit carryforwards..................................  $   4,524    $  2,068
  Net operating loss carryforwards..........................     22,053      37,999
  Investment in unconsolidated subsidiaries.................     42,638       9,465
  Deferred revenue..........................................     97,577      19,787
  Reserve for bad debts.....................................     17,591       4,938
  Accrued expenses..........................................      3,344       3,537
                                                              ---------    --------
     Gross deferred tax assets..............................    187,727      77,794
     Valuation allowances...................................   (123,331)    (56,776)
                                                              ---------    --------
  Net deferred tax asset....................................     64,396      21,018
                                                              ---------    --------
DEFERRED TAX LIABILITIES:
  Tax over book depreciation................................    (65,233)    (21,738)
  Other liability accruals..................................       (917)     (1,034)
                                                              ---------    --------
  Gross deferred tax liabilities............................    (66,150)    (22,772)
                                                              ---------    --------
     Net deferred tax liabilities...........................  $  (1,754)   $ (1,754)
                                                              =========    ========
AS RECORDED IN THE CONSOLIDATED BALANCE SHEETS:
  Current deferred tax assets...............................  $   4,961    $    947
  Noncurrent deferred tax liability.........................     (6,715)     (2,701)
                                                              ---------    --------
          Gross deferred tax liabilities....................  $  (1,754)   $ (1,754)
                                                              =========    ========
</TABLE>
 
     At December 31, 1998, we had net operating loss carryforwards of
approximately $55.1 million for income tax purposes that expire through 2012.
The Company has minimum tax and investment tax credit carryforwards at December
31, 1998 of approximately $3.2 million and $1.4 million, respectively. The
minimum tax credits can be carried forward indefinitely. The investment tax
credits expire in 2001.
 
     Valuation allowances were established to offset a portion of the Company's
deferred tax assets at December 31, 1998 and 1997, respectively. During the
years ended December 31, 1998, 1997 and 1996, the valuation allowance was
increased by $66.6 million, $37.5 million and $18.5 million, respectively.
 
     The increase in the current tax provision in 1998 relates to deferred tax
assets created by continuing operations which have not been benefitted, net
operating losses attributable to the extraordinary item, and the non-qualified
stock option deduction which was not benefitted. Significant components of the
benefit
 
                                      F-22
<PAGE>   75
                            IXC COMMUNICATIONS, INC.
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1998
 
(provision) for income taxes attributable to current operations for the years
ended December 31, 1998, 1997, and 1996, are as follows (in thousands):
 
<TABLE>
<CAPTION>
                                                          1998       1997       1996
                                                        --------    -------    ------
<S>                                                     <C>         <C>        <C>
CURRENT:
  Federal.............................................  $ (7,128)   $    --    $   (5)
  State...............................................    (6,797)    (1,816)     (250)
                                                        --------    -------    ------
          Total Current...............................   (13,925)    (1,816)     (255)
                                                        --------    -------    ------
DEFERRED:
  Federal.............................................        --        393     4,869
  State...............................................        --         64     1,266
                                                        --------    -------    ------
          Total deferred..............................        --        457     6,135
                                                        --------    -------    ------
  Benefit (provision) for income taxes................  $(13,925)   $(1,359)   $5,880
                                                        ========    =======    ======
</TABLE>
 
     Reconciliations of the income tax benefit (provision) attributable to
continuing operations computed at the U.S. federal statutory tax rates to income
tax benefit (provision) for the years ended December 31, 1998, 1997, and 1996,
are as follows (in thousands):
 
<TABLE>
<CAPTION>
                                                       1998        1997        1996
                                                     --------    --------    --------
<S>                                                  <C>         <C>         <C>
Tax benefit at federal statutory rate..............  $ 28,320    $ 34,126    $ 17,260
State income tax benefit (provision)...............      (292)      3,690       3,106
Tax attributes not benefitted......................   (39,699)    (37,529)    (18,491)
Resolution of tax examinations.....................        --          --       3,511
Permanent and other differences....................    (2,254)     (1,646)        494
                                                     --------    --------    --------
Benefit (provision) for income taxes...............  $(13,925)   $ (1,359)   $  5,880
                                                     ========    ========    ========
</TABLE>
 
13. RELATED PARTY TRANSACTIONS
 
     A law firm, of which a director and stockholder is a principal, provided
legal services in the amount of approximately $3.3 million in 1998, $4.3 million
in 1997, and $3.5 million in 1996.
 
14. FAIR VALUE OF FINANCIAL INSTRUMENTS
 
     The following methods and assumptions were used in estimating its fair
value disclosures for financial instruments:
 
     Cash and cash equivalents: The carrying amount reported in the balance
sheets for cash and cash equivalents approximates fair value.
 
     Accounts receivable and accounts payable: The carrying amounts reported in
the balance sheets for accounts receivable and accounts payable approximate fair
value.
 
     Notes receivable: The carrying amounts reported in the balance sheet for
notes receivable approximate fair value because of the short-term nature of the
notes and because their interest rates are comparable to current rates.
 
     Marketable securities: The fair values of marketable securities are based
on quoted market prices and the presence of contractually guaranteed values.
 
     Long-term debt: The fair value of the 9% Notes is estimated at $450.6
million based on their last trading price in 1998. The carrying values of the
capital lease obligations and $200 million credit facility approximate
 
                                      F-23
<PAGE>   76
                            IXC COMMUNICATIONS, INC.
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1998
 
fair values because the interest rates on these obligations are comparable to
the interest rates that could have been obtained at the date of the balance
sheet.
 
     Preferred stock: The fair values of the 7 1/4% Convertible Preferred Stock
and the 12 1/2% Exchangeable Preferred Stock were not determined due to the
impracticability of such a calculation based on their limited market and lack of
an actively quoted price.
 
15. COMMITMENTS AND CONTINGENCIES
 
     From time to time we are involved in various legal proceedings, all of
which have arisen in the ordinary course of business and some of which are
covered by insurance. In the opinion of management, none of the claims relating
to such proceedings will have a material adverse effect on our financial
condition or results of operations.
 
     We lease certain facilities, equipment and transmission capacity under
noncancellable operating leases. Future minimum annual lease payments under
these lease agreements at December 31, 1998, are as follows (in thousands):
 
<TABLE>
<CAPTION>
                                                             OPERATING
                                                              LEASES
                                                             ---------
<S>                                                          <C>
1999.......................................................   $38,844
2000.......................................................    21,414
2001.......................................................    16,774
2002.......................................................    10,953
2003.......................................................     7,909
Thereafter.................................................    16,830
</TABLE>
 
     Lease expense relating to facilities, equipment and transmission capacity
leases, excluding amortization of fiber exchange agreements, was approximately
$120.5 million, $99.1 million and $50.6 million for the years ended December 31,
1998, 1997 and 1996, respectively.
 
     There is a defined contribution retirement and 401(k) savings plan which
covers all full-time employees with one year of service. The Company contributes
6% of eligible compensation, as defined in the plan, and matches 100% of the
employee's contributions up to a maximum of 3% of the employee's compensation.
Employees vest in the Company's contribution over five years. Benefit expense
for 1998, 1997, and 1996 was approximately $2.8 million, $1.3 million, and $0.8
million, respectively. We also continue to operate certain defined contribution
benefit plans that were operated by Eclipse prior to the merger. Contributions
to these plans amounted to $68,000 and $90,000 in 1997 and 1996, respectively.
 
16. VALUATION AND QUALIFYING ACCOUNTS
 
     Activity in the allowance for doubtful accounts and service credits was as
follows (in thousands):
 
<TABLE>
<CAPTION>
                                       BALANCE AT
                                       BEGINNING     CHARGED TO                   BALANCE AT
         FOR THE YEARS ENDED           OF PERIOD      REVENUE      DEDUCTIONS    END OF PERIOD
         -------------------           ----------    ----------    ----------    -------------
<S>                                    <C>           <C>           <C>           <C>
December 31, 1998....................   $13,119       $55,113       $51,568         $16,664
December 31, 1997....................   $ 6,407       $20,782       $14,070         $13,119
December 31, 1996....................   $ 2,842       $ 6,311       $ 2,746         $ 6,407
</TABLE>
 
                                      F-24
<PAGE>   77
                            IXC COMMUNICATIONS, INC.
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1998
 
17. QUARTERLY RESULTS
 
     Unaudited quarterly results are as follows (in thousands except per share
amounts):
 
<TABLE>
<CAPTION>
                                                    THREE MONTH PERIOD ENDED
                                     -------------------------------------------------------
                                     MARCH 31,    JUNE 30,     SEPTEMBER 30,    DECEMBER 31,
                                       1998         1998           1998             1998
                                     ---------    ---------    -------------    ------------
<S>                                  <C>          <C>          <C>              <C>
Net operating revenue..............  $157,583     $ 155,935      $185,269         $169,781
Gross profit.......................    49,634        48,342        75,285           62,007
Net loss...........................   (17,895)     (102,507)      (15,301)         (26,753)
Basic and diluted net loss per
  share:...........................  $  (0.83)    $   (3.30)     $  (0.85)        $  (1.17)
</TABLE>
 
<TABLE>
<CAPTION>
                                                    THREE MONTH PERIOD ENDED
                                     -------------------------------------------------------
                                     MARCH 31,    JUNE 30,     SEPTEMBER 30,    DECEMBER 31,
                                       1997         1997           1997             1997
                                     ---------    ---------    -------------    ------------
<S>                                  <C>          <C>          <C>              <C>
Net operating revenue..............  $106,882     $ 113,812      $136,829         $164,094
Gross profit.......................    21,988        22,833        35,794           45,335
Net loss...........................   (22,498)      (27,914)      (31,172)         (17,580)
Basic and diluted net loss per
  share:...........................  $  (0.67)    $   (0.87)     $  (1.09)        $  (0.84)
</TABLE>
 
18. SEGMENT REPORTING
 
     Our financial reporting segments are based on the way management organizes
the company for making operating decisions and assessing performance. These
segments are based on the different types of products we offer. The segments
consist of the private line segment, the switched long distance segment, and the
data/ Internet segment. The segments are separately evaluated because the
products or services sold by each business unit are subject to different market
forces and sales strategies. Management reviews the gross profits of each
reporting segment and views the costs of the network and administrative
functions as supporting all business segments. Therefore, assets (other than
accounts receivable), liabilities, general and administrative expense, interest
expense and income, and other expenses are not charged to any one segment.
Losses from equity method subsidiaries are not charged to any one segment
because those subsidiaries may have operations in multiple segments. All
operating revenue shown is derived from sales to external customers. Revenue
 
                                      F-25
<PAGE>   78
                            IXC COMMUNICATIONS, INC.
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1998
 
related to the sale of options in fibers that are jointly owned with other
carriers are not reported in any segment. The summarized segment data for 1998,
1997, and 1996 is as follows:
 
<TABLE>
<CAPTION>
                                                          SWITCHED LONG    DATA &
                                           PRIVATE LINE     DISTANCE      INTERNET   UNALLOCATED    TOTAL
                                           ------------   -------------   --------   -----------   --------
<S>                                        <C>            <C>             <C>        <C>           <C>
1998
Net operating revenue....................    $225,358       $414,405      $ 9,029      $19,776     $668,568
Cost of service..........................      85,800        334,109       13,391           --      433,300
                                             --------       --------      -------      -------     --------
Gross profit.............................     139,558         80,296       (4,362)      19,776      235,268
Operations and administration............                                                           144,536
Depreciation and amortization............                                                           113,586
Merger costs.............................                                                             7,955
                                                                                                   --------
Operating loss...........................                                                           (30,809)
Interest income..........................                                                            14,339
Interest expense.........................                                                           (31,683)
Equity (loss) from unconsolidated
  subsidiaries...........................                                                           (32,986)
Other, net...............................                                                               226
                                                                                                   --------
Loss before provision for income taxes,
  minority interest, and extraordinary
  loss...................................                                                          $(80,913)
                                                                                                   ========
Identifiable Assets:
Accounts Receivable......................    $ 32,780       $ 72,269      $ 2,144      $   365     $107,558
                                             ========       ========      =======      =======     ========
 
1997
Net operating revenue....................    $161,570       $359,288      $   759      $    --     $521,617
Cost of service..........................      72,719        319,247        3,701           --      395,667
                                             --------       --------      -------      -------     --------
Gross profit.............................      88,851         40,041       (2,942)          --      125,950
Operations and administration............                                                           102,760
Depreciation and amortization............                                                            69,139
Merger costs.............................                                                             3,591
                                                                                                   --------
Operating loss...........................                                                           (49,540)
Interest income..........................                                                             7,768
Interest expense.........................                                                           (31,702)
Equity (loss) from unconsolidated
  subsidiaries...........................                                                           (23,800)
Other, net...............................                                                                29
                                                                                                   --------
Loss before provision for income taxes,
  minority interest, and extraordinary
  loss...................................                                                          $(97,245)
                                                                                                   ========
Identifiable Assets:
Accounts Receivable......................    $ 27,925       $ 82,830      $    --      $ 1,602     $112,357
                                             ========       ========      =======      =======     ========
</TABLE>
 
                                      F-26
<PAGE>   79
                            IXC COMMUNICATIONS, INC.
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1998
 
<TABLE>
<CAPTION>
                                                          SWITCHED LONG    DATA &
                                           PRIVATE LINE     DISTANCE      INTERNET   UNALLOCATED    TOTAL
                                           ------------   -------------   --------   -----------   --------
<S>                                        <C>            <C>             <C>        <C>           <C>
 
1996
Net operating revenue....................    $ 99,793       $182,174      $    --      $    --     $281,967
Cost of service..........................      60,129        134,752           --           --      194,881
                                             --------       --------      -------      -------     --------
Gross profit.............................      39,664         47,422           --           --       87,086
Operations and administration............                                                            71,103
Depreciation and amortization............                                                            35,927
Merger costs.............................                                                                --
                                                                                                   --------
Operating loss...........................                                                           (19,944)
Interest income..........................                                                            10,242
Interest expense.........................                                                           (37,636)
Equity (loss) from unconsolidated
  subsidiaries...........................                                                            (1,961)
Other, net...............................                                                              (200)
                                                                                                   --------
Loss before provision for income taxes,
  minority interest, and extraordinary
  loss...................................                                                          $(49,499)
                                                                                                   ========
</TABLE>
 
Significantly all of the Company's revenue is generated in the United States.
 
19. NEW ACCOUNTING PRONOUNCEMENTS
 
     In June 1997, the FASB issued SFAS No. 130, "Reporting Comprehensive
Income" ("SFAS No. 130"). SFAS No. 130 establishes standards for reporting and
display of comprehensive income and its components in a full set of
general-purpose financial statements. SFAS No. 130 is effective for fiscal years
beginning after December 15, 1997. Since we had no items of other comprehensive
income in any of the periods presented, there was no impact from the adoption of
SFAS No. 130 on reporting or display of financial information.
 
     In June 1998, the FASB issued SFAS No. 133, "Accounting for Derivative
Instruments and Hedging Activities" ("SFAS No. 133"). SFAS No. 133 establishes
accounting and reporting standards requiring that derivative instruments be
recorded in the balance sheet as either an asset or liability measured at its
fair value. Because we have not entered into derivative financial instruments,
the implementation of SFAS No. 133 will not have an impact on the results of
operations or financial position.
 
     In April 1998, the Accounting Standards Executive Committee issued
Statement of Position ("SOP") 98-5, "Reporting on the costs of Start-Up
Activities." The SOP requires costs of start-up activities and organization
costs to be expensed as incurred, and is effective for our fiscal year ended
December 31, 1999. This new standard will have no material impact on our
financial position or results of operations.
 
     In March 1998 the Accounting Standards Executive Committee issued SOP 98-1
"Accounting for the Costs of Computer Software Developed or Obtained for
Internal Use." This standard provides guidance on accounting for certain costs
incurred for software developed for internal use and will be effective for our
fiscal year ended December 31, 1999. Upon adoption, January 1, 1999, this
standard will not have a material impact on our financial position or results of
operations.
 
                                      F-27
<PAGE>   80
                            IXC COMMUNICATIONS, INC.
 
             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (CONTINUED)
                               DECEMBER 31, 1998
 
20. SUBSEQUENT EVENTS
 
     In March 1999 we entered into an agreement with Westel whereby Westel
agreed to transfer certain of its Progress share interest collateral to us as
repayment of Westel's note payable to us. We gave Westel the right to repurchase
such share interests no later than May 31, 1999.
 
     In February 1999 Marca-Tel and its primary creditor agreed to allow
Marca-Tel to defer certain payments to the creditor until June 1999. The
creditor was given the right to acquire up to 10% of Marca-Tel, and the creditor
acquired additional shares which diluted our indirect interest to 24%.
 
                                      F-28
<PAGE>   81
 
                                 EXHIBIT INDEX
 
<TABLE>
<CAPTION>
EXHIBIT
NUMBER                             DESCRIPTION
- -------                            -----------
<C>        <S>
 3.1       Restated Certificate of Incorporation of IXC Communications,
           Inc., as amended (incorporated by reference to Exhibit 3.1
           of the IXC Communications, Inc.'s Quarterly Report Form 10-Q
           for the quarter ended September 30, 1998 filed with the
           Commission on November 16, 1998).
 3.2       Bylaws of IXC Communications, Inc., as amended (incorporated
           by reference to Exhibit 3.2 of the IXC Communications,
           Inc.'s Quarterly Report on Form 10-Q for the quarter ended
           September 30, 1997 filed with the Commission on November 14,
           1997).
 4.1       Indenture dated as of October 5, 1995, by and among IXC
           Communications, Inc., on its behalf and as
           successor-in-interest to I-Link Holdings, Inc. and IXC
           Carrier Group, Inc., each of IXC Carrier, Inc., on its
           behalf and as successor-in-interest to I-Link, Inc., CTI
           Investments, Inc., Texas Microwave Inc. and WTM Microwave
           Inc., Atlantic States Microwave Transmission Company,
           Central States Microwave Transmission Company, Telcom
           Engineering, Inc., on its behalf and as
           successor-in-interest to SWTT Company and Microwave Network,
           Inc., Tower Communication Systems Corp., West Texas
           Microwave Company, Western States Microwave Transmission
           Company, Rio Grande Transmission, Inc., IXC Long Distance,
           Inc., Link Net International, Inc. (collectively, the
           "Guarantors"), and IBJ Schroder Bank & Trust Company, as
           Trustee (the "Trustee"), with respect to the 12 1/2% Series
           A and Series B Senior Notes due 2005 (incorporated by
           reference to Exhibit 4.1 of IXC Communications, Inc.'s and
           each of the Guarantor's Registration Statement on Form S-4
           filed with the Commission on April 1, 1996 (File No.
           333-2936) (the "S-4")).
 4.2       Form of 12 1/2% Series A Senior Notes due 2005 (incorporated
           by reference to Exhibit 4.6 of the S-4).
 4.3       Form of 12 1/2% Series B Senior Notes due 2005 and
           Subsidiary Guarantee (incorporated by reference to Exhibit
           4.8 of IXC Communications, Inc.'s Amendment No. 1 to
           Registration Statement on Form S-1 filed with the Commission
           on June 13, 1996 (File No. 333-4061) (the "S-1 Amendment")).
 4.4       Amendment No. 1 to Indenture and Subsidiary Guarantee dated
           as of June 4, 1996, by and among IXC Communications, Inc.,
           the Guarantors and the Trustee (incorporated by reference to
           Exhibit 4.11 of the S-1 Amendment).
 4.5       Purchase Agreement dated as of March 25, 1997, by and among
           IXC Communications, Inc., Credit Suisse First Boston
           Corporation ("CS First Boston") and Dillon Read & Co. Inc.
           ("Dillon Read") (incorporated by reference to Exhibit 4.12
           of IXC Communications, Inc.'s Quarterly Report on Form 10-Q
           for the quarter ended March 31, 1997, filed with the
           Commission on May 15, 1997 (the "March 31, 1997 10-Q")).
 4.6       Registration Rights Agreement dated as of March 25, 1997, by
           and among IXC Communications, Inc., CS First Boston and
           Dillon Read (incorporated by reference to Exhibit 4.13 of
           the March 31, 1997 10-Q).
 4.7       Amendment to Registration Rights Agreement dated as of Marc
           25, 1997, by and between IXC Communications, Inc. and
           Trustees of General Electric Pension Trust (incorporated by
           reference to Exhibit 4.14 of the March 31, 1997 10-Q).
 4.8       Registration Rights Agreement dated as of July 8, 1997,
           among IXC Communications, Inc. and each of William G. Rodi,
           Gordon Hutchins, Jr. and William F. Linsmeier (incorporated
           by reference to Exhibit 4.15 of IXC Communications, Inc.'s
           Quarterly Report on Form 10-Q for the quarter ended June 30,
           1997, as filed with the Commission on August 6, 1997 (the
           "June 30, 1997 10-Q")).
 4.9       Registration Rights Agreement dated as of July 8, 1997,
           among IXC Communications, Inc. and each of William G. Rodi,
           Gordon Hutchins, Jr. and William F. Linsmeier (incorporated
           by reference to Exhibit 4.16 of the June 30, 1997 10-Q).
</TABLE>
<PAGE>   82
 
<TABLE>
<CAPTION>
EXHIBIT
NUMBER                             DESCRIPTION
- -------                            -----------
<C>        <S>
 4.10      Indenture dated as of August 15, 1997, between IXC
           Communications, Inc. and The Bank of New York (incorporated
           by reference to Exhibit 4.2 of IXC Communications, Inc.'s
           Current Report on Form 8-K dated August 20, 1997, and filed
           with the Commission on August 28, 1997 (the "8-K")).
 4.11      First Supplemental Indenture dated as of October 23, 1997,
           among IXC Communications, Inc., the Guarantors, IXC
           International, Inc. and IBJ Schroder Bank & Trust Company
           (incorporated by reference to Exhibit 4.13 of IXC
           Communications, Inc.'s Annual Report on Form 10-K for the
           year ended December 31, 1997, and filed with the Commission
           on March 16, 1998 (the "1997 10-K")).
 4.12      Second Supplemental Indenture dated as of December 22, 1997,
           among IXC Communications, Inc., the Guarantors, IXC Internet
           Services, Inc., IXC International, Inc. and IBJ Schroder
           Bank & Trust Company (incorporated by reference to Exhibit
           4.14 of the 1997 10-K).
 4.13      Third Supplemental Indenture dated as of January 6, 1998,
           among IXC Communications, Inc., the Guarantors, IXC Internet
           Services, Inc., IXC International, Inc. and IBJ Schroder
           Bank & Trust Company (incorporated by reference to Exhibit
           4.15 of the 1997 10-K).
 4.14      Fourth Supplemental Indenture dated as of April 3, 1998,
           among IXC Communications, Inc., the Guarantors, IXC Internet
           Services, Inc., IXC International, Inc., and IBJ Schroder
           Bank & Trust Company (incorporated by reference to Exhibit
           4.15 of IXC Communications, Inc.'s Registration Statement on
           Form S-3 filed with the Commission on May 12, 1998 (File No.
           333-52433)).
 4.15      Purchase Agreement dated as of March 25, 1998, among IXC
           Communications, Inc., Goldman Sachs & Co. ("Goldman"), CS
           First Boston, Merrill Lynch, Pierce, Fenner & Smith
           Incorporated ("Merrill") and Morgan Stanley & Co.
           Incorporated ("Morgan Stanley") (incorporated by reference
           to Exhibit 4.1 IXC Communications, Inc.'s Current Report on
           Form 8-K dated March 30, 1998, and filed with the Commission
           on April 7, 1998 (the "April 7, 1998 8-K")).
 4.16      Registration Rights Agreement dated as of March 30, 1998,
           among IXC Communications, Inc., Goldman, CS First Boston,
           Merrill and Morgan Stanley (incorporated by reference to
           Exhibit 4.2 of the April 7, 1998 8-K).
 4.17      Deposit Agreement dated as of March 30, 1998, between IXC
           Communications, Inc. and BankBoston N.A. (incorporated by
           reference from Exhibit 4.3 of the April 7, 1998 8-K).
 4.18      Purchase Agreement dated as of April 16, 1998, by and among
           IXC Communications, Inc., CS First Boston, Merrill, Morgan
           Stanley and Nationsbanc Montgomery Securities LLC
           (incorporated by reference to Exhibit 4.1 of IXC
           Communications, Inc.'s Current Report on Form 8-K dated
           April 21, 1998, and filed with the Commission on April 22,
           1998 (the "April 22, 1998 8-K").
 4.19      Registration Rights Agreement dated as of April 16, 1998, by
           and among IXC Communications, Inc., Credit Suisse First
           Boston Corporation, Merrill, Morgan Stanley and Nationsbanc
           Montgomery Securities LLC (incorporated by reference to
           Exhibit 4.2 of the April 22, 1998 8-K).
 4.20      Indenture dated as of April 21, 1998, between IXC
           Communications, Inc. and IBJ Schroder Bank & Trust Company,
           as Trustee (incorporated by reference to Exhibit 4.3 of the
           April 22, 1998 8-K).
 4.21      Rights Agreement dated as of September 9, 1998, between IXC
           Communications, Inc. and U.S. Stock Transfer Corporation
           (incorporated by reference to Exhibit 4.1 of IXC
           Communications, Inc.'s Form 8-K dated September 8, 1998 and
           filed with Commission on September 11, 1998).
</TABLE>
<PAGE>   83
 
<TABLE>
<CAPTION>
EXHIBIT
NUMBER                             DESCRIPTION
- -------                            -----------
<C>        <S>
10.1       Office Lease dated as of June 21, 1989 with USAA Real Estate
           Company, as amended (incorporated by reference to Exhibit
           10.1 of the S-4).
10.2       Equipment Lease dated as of December 1, 1994, by and between
           DSC Finance Corporation and Switched Services
           Communications, L.L.C.; Assignment Agreement dated as of
           December 1, 1994, by and between Switched Services
           Communications, L.L.C. and DSC Finance Corporation; and
           Guaranty dated December 1, 1994, made in favor of DSC
           Finance Corporation by IXC Communications, Inc.
           (incorporated by reference to Exhibit 10.2 of the S-4).
10.3       Amended and Restated 1994 Stock Plan of IXC Communications,
           Inc., as amended (incorporated by reference to Exhibit 10.3
           of the June 30, 1997 10-Q).
10.4*      Form of Non-Qualified Stock Option Agreement under the 1994
           Stock Plan of IXC Communications, Inc. (incorporated by
           reference to Exhibit 10.4 of the S-4).
10.5       Amended and Restated Development Agreement by and between
           Intertech Management Group, Inc. and IXC Long Distance, Inc.
           (incorporated by reference to Exhibit 10.7 of IXC
           Communications, Inc.'s and the Guarantors' Amendment No. 1
           to Registration Statement on Form S-4 filed with the
           Commission on May 20, 1996 (File No. 333-2936) ("Amendment
           No. 1 to S-4")).
10.6       Third Amended and Restated Service Agreement dated as of
           April 16, 1998, among IXC Long Distance, Inc., IXC Carrier,
           Inc., IXC Broadband, Inc. and Excel Telecommunications, Inc.
           (incorporated by reference to Exhibit 10.6 of IXC
           Communications, Inc.'s Quarterly Report on Form 10-Q for the
           quarter ended March 31, 1998, filed with the Commission on
           May 15, 1998 (the "March 31, 1998 10-Q")).
10.7       Equipment Purchase Agreement dated as of January 16, 1996,
           by and between Siecor Corporation and IXC Carrier, Inc.
           (incorporated by reference to Exhibit 10.9 of the S-4).
10.8*      1996 Stock Plan of IXC Communications, Inc., as amended
           (incorporated by reference to Exhibit 10.10 of the IXC
           Communications, Inc. Annual Report on Form 10-K for the year
           ended December 31, 1996 and filed with the Commission on
           March 28, 1997 (the "1996 10-K")).
10.9       IRU Agreement dated as of November 1995 between WorldCom,
           Inc. and IXC Carrier, Inc. (incorporated by reference to
           Exhibit 10.11 of Amendment No. 1 to the S-4).
10.10*+    IXC Communications, Inc. Outside Directors' Phantom Stock
           Plan 1999 Restatement.
10.11      Business Consultant and Management Agreement dated as of
           March 1, 1998, by and between IXC Communications, Inc. and
           Culp Communications Associates (incorporated by reference to
           Exhibit 10.11 of the March 31, 1998 10-Q).
10.12      Employment Agreement dated as of December 28, 1995, by and
           between IXC Communications, Inc. and James F. Guthrie
           (incorporated by reference to Exhibit 10.14 of the S-1
           Amendment).
10.13*     Special Stock Plan of IXC Communications, Inc. (incorporated
           by reference to Exhibit 10.16 of the 1996 10-K).
10.14      Lease dated as of June 4, 1997, between IXC Communications,
           Inc. and Carramerca Realty, L.P. (incorporated by reference
           to Exhibit 10.17 of the June 30, 1997 10-Q).
10.15      Loan and Security Agreement dated as of July 18, 1997, among
           IXC Communications, Inc., IXC Carrier, Inc. and NTFC Capital
           Corporation ("NTFC") (incorporated by reference to Exhibit
           10.18 of the June 30, 1997 10-Q).
</TABLE>
<PAGE>   84
 
<TABLE>
<CAPTION>
EXHIBIT
NUMBER                             DESCRIPTION
- -------                            -----------
<C>        <S>
10.16      IRU and Stock Purchase Agreement dated as of July 22, 1997,
           between IXC Internet Services, Inc. and PSINet Inc.
           (incorporated by reference to Exhibit 10.19 of IXC
           Communications, Inc.'s Amendment No. 1 to Form 10-Q/A for
           the quarter ended September 30, 1997 filed with the
           Commission on December 12, 1997 (the "September 30, 1997
           10-Q/A")).
10.17      Joint Marketing and Services Agreement dated as of July 22,
           1997, between IXC Internet Services, Inc. and PSINet Inc.
           (incorporated by reference to Exhibit 10.20 of the September
           30, 1997 10-Q/A).
10.18      Employment Agreement dated as of September 9, 1997, between
           Benjamin L. Scott and IXC Communications, Inc. (incorporated
           by reference to Exhibit 10.21 of IXC Communication Inc.'s
           Amendment No. 1 to Registration Statement on S-4 filed with
           the Commission on December 15, 1997 (File No. 333-37157)
           ("Amendment No. 1 to the EPS S-4")).
10.19*     IXC Communications, Inc. 1997 Special Executive Stock Plan
           (incorporated by reference to Exhibit 10.22 of Amendment No.
           1 to the EPS S-4).
10.20      First Amendment to Loan and Security Agreement dated as of
           December 23, 1997, among IXC Communications, Inc., IXC
           Carrier, Inc., NTFC and Export Development Corporation
           ("EDC") (incorporated by reference to Exhibit 10.21 of the
           1997 10-K).
10.21      Second Amendment to Loan and Security Agreement dated as of
           January 21, 1998, among IXC Communications, Inc., IXC
           Carrier, Inc., NTFC and EDC (incorporated by reference to
           Exhibit 10.22 of the 1997 10-K).
10.22*     IXC Communications, Inc. 1998 Stock Plan (incorporated by
           reference to Exhibit 10.22 of the IXC Communications, Inc.'s
           Quarterly Report Form 10-Q for the quarter ended September
           30, 1998 filed with the Commission on November 16, 1998).
10.23      Credit Agreement, dated as of October 27, 1998 among the
           Borrower, NationsBank, N.A., as a Lender and Administrative
           Agent, NationsBanc Montgomery Securities, LLC, as Lead
           Arranger, and Credit Suisse First Boston, Goldman Sachs
           Credit Partners, L.P., EDC and TD Securities (USA), Inc.,
           each as a Lender and Co-Syndication Agent (incorporated by
           reference to Exhibit 10.1 of IXC Communications, Inc.
           Current Report on Form 8-K dated October 27, 1998 and filed
           with the Commission on November 4, 1998).
10.24+     Office Lease Agreement dated as of December 7, 1998, between
           B.O. III, LTD and IXC Communications Services, Inc.
10.25+     Employment Agreement dated as of December 7, 1998, by and
           between IXC Communications, Inc. and Michael W. Vent.
21.1+      Subsidiaries of IXC Communications, Inc.
23.1+      Consent of Ernst & Young, LLP.
23.2+      Consent of Arthur Andersen LLP.
23.3+      Consent of Deloitte & Touche LLP.
23.4+      Consent of Arthur Andersen LLP.
23.5+      Auditors' Report of Arthur Andersen LLP
24.1       Powers of Attorney (included as the signature page of this
           Form 10-K).
27.1+      Financial Data Schedule.
</TABLE>
 
- ---------------
 *  Management contract or executive compensation plan or arrangement required
    to be indicated as such and filed as an exhibit pursuant to applicable rules
    of the Commission.
 
 +  Filed herewith.

<PAGE>   1

                                                                   EXHIBIT 10.10


                            IXC COMMUNICATIONS, INC.
                      OUTSIDE DIRECTORS' PHANTOM STOCK PLAN
                                1999 RESTATEMENT

         1. PURPOSES.

                 (a) The purpose of the IXC Communications, Inc. Outside
         Directors' Phantom Stock Plan ("Plan") is to provide stock-based
         compensation payable in cash, stock or a combination thereof to Outside
         Directors of IXC Communications, Inc. ("Company") to better attract,
         retain and reward Outside Directors and, accordingly, to strengthen the
         mutuality of interests between Outside Directors and the Company's
         stockholders by providing Outside Directors with a proprietary interest
         in pursuing the Company's long-term growth and financial success.

                 (b) Because the Plan only benefits Outside Directors, it is
         intended that the Plan be exempt from the Employee Retirement Income
         Security Act of 1974 ("ERISA").

         2. EFFECTIVE DATE. The Plan was originally effective on July 2, 1996.
This 1998 Restatement of the Plan is effective for Class Years beginning on or
after July 31, 1998.

         3. DEFINITIONS. For purposes of this Plan, each of the following terms
shall have the meanings set forth below:

                 (a) "Account" means the unfunded account established for each
         Participant.

                 (b) "Annual Stockholders' Meeting" means the annual meeting of
         the Stockholders at which the members of the Board of Directors are
         elected.

                 (c) "Board of Directors" means the Board of Directors of IXC
         Communications, Inc.

                 (d) "Change in Control" means any of the following:

                        (i) The date of consummation of the sale of all or
                 substantially all of the assets of the Company;

                        (ii) The date of completion of a successful tender offer
                 for greater than fifty percent (50%) of the outstanding capital
                 stock of the Company; or

                        (iii) The date of consummation of a merger or
                 consolidation of the Company with any other corporation in
                 which the parties who were Stockholders immediately preceding
                 such merger or consolidation will not hold a majority of the


                                      - 1 -
<PAGE>   2

                 outstanding capital stock of the surviving corporation (whether
                 or not the Company is the surviving corporation) immediately
                 after such merger or consolidation.

                 (e) "Class Year" means the period commencing on the Outside
         Director's Participation Commencement Date and ending on the date that
         is three hundred sixty-five (365) days after the most recent Annual
         Stockholders' Meeting, or the date of the next Annual Stockholders
         Meeting, whichever is sooner.

                 (f) "Committee" means the committee designated in accordance
         with Section 4 below that is responsible for the administration of the
         Plan.

                 (g) "Common Stock" means the common stock of the Company or any
         security issued in substitution, exchange, or in lieu thereof.

                 (h) "Company" means IXC Communications, Inc., a Delaware
         corporation, or any successor corporation.

                 (i) "Director" means a member of the Board of Directors of the
         Company.

                 (j) "Disabled" means permanent and total disability, as defined
         in Internal Revenue Code Section 22(e)(3).

                 (k) The "Fair Market Value" of Common Stock shall be determined
         in accordance with the general rules stated in Subparagraph (i) below
         and the special rules stated in Subparagraph (ii) below.

                        (i) The following general rules shall apply for
                 valuation purposes.

                               (A) If the Common Stock is admitted to trading or
                        listed on a national securities exchange, its Fair
                        Market Value shall be the last reported sale price on
                        that day regular way, or if no such reported sale takes
                        place on that day, the average of the last reported bid
                        and ask prices on that day regular way, in either case
                        on the principal national securities exchange on which
                        the Common Stock is admitted to trading or listed.

                               (B) If the Common Stock is not listed or admitted
                        to trading on any national securities exchange, its Fair
                        Market Value shall be the last sale price regular way on
                        that day reported on the Nasdaq National Market ("Nasdaq
                        National Market") of the Nasdaq Stock Market ("NSM") or,
                        if no such reported sale takes place on that day, the
                        average of the closing bid and ask prices regular way on
                        that day.

                               (C) If the Common Stock is not traded or listed
                        on a national securities exchange or included in the
                        Nasdaq National Market, its Fair


                                      - 2 -
<PAGE>   3

                        Market Value shall be the last reported sale price on
                        that day regular way, or if no such reported sale takes
                        place on that day, the average of the closing bid and
                        ask prices regular way on that day reported by the NSM,
                        or any comparable system on that day.

                               (D) If the Common Stock is not described in (i),
                        (ii) or (iii) above, its Fair Market Value shall be the
                        last reported sale price on that day regular way, or if
                        no such reported sale takes place on that day, the
                        closing bid and ask prices regular way on that day as
                        furnished by any member of the National Association of
                        Securities Dealers, Inc. ("NASD") selected from time to
                        time by the Company for that purpose.

                 If the national securities exchange, Nasdaq National Market,
                 NSM, or NASD (whichever is applicable), is closed on such date,
                 the "Fair Market Value" shall be determined as of the last
                 preceding day on which the Common Stock was traded or for which
                 bid and ask prices are available.

                        (ii) Notwithstanding the provisions of Subparagraph (i)
                 above, the following special valuation rules shall apply.

                               (A) The Fair Market Value of Common Stock for
                        purposes of calculating the number of shares that are
                        deemed to be purchased with a Participant's Fixed Credit
                        under Section 8 below or the amount of the cash benefit
                        payable to the Participant under Sections 10 and 11
                        below will be the average value of the Common Stock for
                        the five (5) trading days preceding the relevant date.

                               (B) In the case of a Change in Control, the Fair
                        Market Value of the Common Stock shall be the value of
                        the consideration paid for it in the transaction that
                        effects the Change in Control.

                 (l) "Fixed Credit" means the amount that is credited to the
         Participant's Account pursuant to the rules of Section 7 below for
         services rendered as an Outside Director.

                 (m) "Inside Director" means a Director who is also an employee
         of the Company or of one of its subsidiaries.

                 (n) "Outside Director" means a Director who is not an employee
         of the Company or of one of its subsidiaries.

                 (o) "Participant" means an Outside Director who has an Account
         in the Plan.


                                      - 3 -
<PAGE>   4

                 (p) "Participation Commencement Date" means the date that an
         Outside Director commences participation in the Plan, as determined in
         accordance with Section 5 below. An Outside Director's Participation
         Commencement Date will be determined separately for each Class Year.

                 (q) "Plan" means this IXC Communications, Inc. Outside
         Directors' Phantom Stock Plan, as it may be amended from time to time.

                 (r) "Stockholders" mean the stockholders of the Company.

         4. ADMINISTRATION.

                 (a) This Plan shall be administered by a committee
         ("Committee") composed of Inside Directors and may consist of one or
         more individuals.

                 (b) It is expressly intended that this Plan be treated as a
         formula plan for purposes of Rule 16b-3 under the Securities Exchange
         Act of 1934 ("Exchange Act") so that the approval of the Plan by the
         Board of Directors constitutes the approval of all grants under the
         Plan.

                 (c) The Committee may conduct its meetings in person or by
         telephone. A majority of the members of the Committee shall constitute
         a quorum, and any action shall constitute the action of the Committee
         if it is authorized by:

                        (i) A majority of the members present at any meeting
                 conducted in accordance with the Company's bylaws; or

                        (ii) The unanimous consent of all of the members in
                 writing without a meeting.

                 (d) The Committee is authorized to interpret this Plan and to
         adopt rules and procedures relating to the administration of this Plan.
         All actions of the Committee in connection with the interpretation and
         administration of this Plan shall be binding upon all parties.

                 (e) The Committee is expressly authorized to make such
         modifications to this Plan as are necessary to effectuate the intent of
         this Plan as a result of any changes in the tax, accounting, or
         securities laws treatment of the Participants, the Plan or the Company.

         5. PARTICIPATION.

                 (a) The persons eligible to participate in this Plan shall be
         limited to Outside Directors.


                                      - 4 -
<PAGE>   5

                 (b) Each Outside Director shall automatically commence
         participation in the Plan upon his or her Participation Commencement
         Date, determined in accordance with the following rules.

                        (i) In the case of an individual who is elected to the
                 Board of Directors at the Annual Stockholders' Meeting, the
                 Participation Commencement Date shall be the date of that
                 meeting.

                        (ii) In the case of an individual who is appointed to
                 the Board of Directors, the Participation Commencement Date
                 shall be the effective date of the appointment.

                        (iii) In the case of an individual who ceases to be an
                 Inside Director and becomes an Outside Director, the
                 Participation Commencement Date shall be the date of the
                 termination of the individual's employment with the Company or
                 a subsidiary.

         6. ACCOUNTS.

                 (a) For each Class Year, each Participant's Account will be
         credited with the Participant's Fixed Credit, determined in accordance
         with Section 7 below.

                 (b) The Fixed Credit will be deemed to be credited to a
         Participant's Account on the individual's Participation Commencement
         Date.

         7. FIXED CREDIT.

                 (a) The amount used to establish the Fixed Credit for a Class
         Year shall be twenty thousand dollars ($20,000).

                 (b) In the case of any individual whose Participation
         Commencement Date does not coincide with the Annual Stockholders'
         Meeting, the Participant's Fixed Credit will be reduced by multiplying
         it by a fraction, the numerator of which is (i) the number of days
         between the Participation Commencement Date and the date one year after
         the most recent Annual Stockholders' Meeting and the denominator of
         which is (ii) three hundred sixty- five (365).

         8. INVESTMENTS.

                 (a) The amount deemed to be credited to a Participant's Account
         for a Class Year will be the maximum number of whole and partial shares
         of Common Stock that could be purchased with the Participant's Fixed
         Credit for the Class Year, based on the Fair Market Value of the Common
         Stock on the individual's Participation Commencement Date.


                                      - 5 -
<PAGE>   6

                 (b) If the Company pays cash dividends on its shares of Common
         Stock, each Participant's Account shall be credited with a deemed
         dividend payment on the shares credited to the Participant's Account
         using the dividend per share amount established by the Company.

                 (c) Any cash dividends that are deemed to be paid on the shares
         of Common Stock held in a Participant's Account will be deemed to be
         used to purchase additional whole and partial shares of Common Stock.
         The Fair Market Value of the Common Stock for this purpose will be
         determined pursuant to Section 3(k)(ii) above as of the date on which
         the dividends are paid.

         9. VESTING.

                 (a) Each Participant shall earn a vested right to the amount of
         shares deemed to be credited to the Participant's Account for a Class
         Year on a monthly basis, over the remaining term of the Class Year,
         starting on the individual's Participation Commencement Date.

                 (b) A Participant will cease vesting in the shares deemed to be
         credited to the Participant's Account for a Class Year if the
         Participant becomes an Inside Director, so that the Participant will
         forfeit the nonvested portion of the Participant's Account attributable
         to that Class Year as of the date the Participant becomes an Inside
         Director.

                 (c) If a Participant ceases serving as a Director prior to the
         last day of a Class Year for a reason other than death or Disability,
         the Participant will forfeit the nonvested portion of the Participant's
         Account attributable to that Class Year on the date the Participant
         ceases to serve as a Director. If the cessation is caused by the
         Participant's death or Disability, the Participant's interest in the
         Participant's Account will become fully vested on the date of the
         Participant's death or Disability.

                 (d) Any additional shares of Common Stock deemed to be acquired
         during the Class Year (e.g., as a result of cash or stock dividends
         paid on Common Stock) shall be subject to the vesting rules of this
         Section 9, treating such additional shares as if they had been acquired
         on the individual's Participation Commencement Date of the applicable
         Class Year.

         10. TIMING OF BENEFIT PAYMENTS.

                 (a) The entire vested amount in a Participant's Account
         attributable to a Class Year shall be paid to the Participant as soon
         as reasonably practicable following the third Annual Stockholders'
         Meeting that occurs after the individual's Participation Commencement
         Date based on the Fair Market Value of the Common Stock as determined
         pursuant to Section 3(k)(ii) above. Notwithstanding the foregoing, if a
         Participant elects to receive any


                                      - 6 -
<PAGE>   7

         or all of its benefits for a Class Year in the form of Common Stock,
         then such Common Stock shall be issued to the Participant as soon as
         reasonably practicable following the end of the Class Year or at such
         earlier time when the Participant becomes fully vested in such Common
         Stock.

                 (b) In the event that the Participant dies or becomes Disabled
         before the date specified in Paragraph (a) above, the entire amount of
         the Participant's benefit under the Plan (i.e., the amount attributable
         to all Class Years) will be paid as soon as reasonably practicable
         after that date, but in no event later than ninety (90) days after that
         date, based on the Fair Market Value of the Common Stock on the date of
         the Participant's death or Disability (whichever is applicable) as
         determined pursuant to Section 3(k)(ii) above.

                 (c) Except as provided in Paragraph (b) above or in Section 12
         below, no benefits will be payable at the time of termination of a
         Participant's status as a Director, but, rather, the Participant's
         benefit will be paid solely in accordance with Paragraph (a) above.

         11. FORM OF BENEFIT PAYMENTS.

                 (a) Benefits will be paid in the form of a lump sum
         distribution of cash equal to the Fair Market Value of the Common Stock
         deemed to be held in the Participant's Account on the date of the event
         on which the amount of the benefit is to be determined.

                 (b) Notwithstanding the foregoing, effective for Class Years
         beginning after July 31, 1998, a Participant may elect to have all or
         any portion of its benefits associated with a particular Class Year
         payable in the form of Common Stock in accordance with such rules and
         procedures as the Committee may prescribe. This election, once made, is
         irrevocable. Any fractional shares associated with any benefits paid in
         the form of Common Stock will be rounded to the nearest whole number of
         shares.

                 (c) Any Participant who has an account balance on July 31, 1998
         may take a one-time election in accordance with such rules and
         procedures as the Committee may prescribe, no later than December 31,
         1998, that all or any portion of the amounts in the Participant's
         Account (including amounts attributable to prior Class Years) be paid
         in the form of Common Stock. This election, once made, is irrevocable.
         To the extent the shares were vested at the time the election was made,
         those shares will be distributed as soon as reasonably practicable
         following December 31, 1998. To the extent that the shares were not
         vested, they will be distributed as soon as reasonably practicable
         following vesting.

         12. EFFECT OF CHANGE IN CONTROL.

                 (a) Notwithstanding anything in this Plan to the contrary, upon
         a Change in Control:


                                      - 7 -
<PAGE>   8

                        (i) All Accounts shall become fully vested as of that
                 date; and

                        (ii) All benefits under the Plan shall become payable as
                 soon after that date as is reasonably practicable, but in no
                 event later than ten (10) business days after that event.

                 (b) If the Participant had not previously elected that some or
         all of his or her benefit be paid in the form of Common Stock, the
         benefit will be paid in the form of cash. To the extent that the
         Participant had elected that his or her benefit be paid in the form of
         Common Stock, the benefit will be paid in the form of consideration
         paid for the Common Stock in the transaction.

         13. DESIGNATION OF BENEFICIARY. In the event of the death of a
Participant prior to the date on which the Participant's entire benefit under
the Plan is paid, the benefit (or the remaining portion thereof) shall be paid
to the Participant's estate, unless the Participant has designated a beneficiary
in accordance with such rules and procedures as the Committee may prescribe.

         14. PAYEES UNDER A LEGAL DISABILITY. If any payee is a minor, or if the
Committee reasonably believes that any payee is legally incapable of giving a
valid receipt and discharge for any payment due the payee, the Committee may
have the payment made to the person (or persons or institution) whom it believes
is caring for or supporting the payee. Any such payment shall be a payment for
the benefit of the payee and shall be a complete discharge of any liability
under the Plan to the payee.

         15. PAYMENT OF BENEFITS. All payments under the Plan shall be delivered
in person or mailed to the last address of the Participant (or, in the case of
the death of the Participant, to that of the Participant's estate or of the
Participant's designated beneficiary, whichever is applicable). Each Participant
shall be responsible for furnishing the Committee with his or her current
address and that of his or her beneficiary (if applicable).

         16. CHANGES IN CAPITALIZATION. In the event of any change in the
capitalization of the Company affecting its Common Stock (e.g., a stock split,
reverse stock split, stock dividend, recapitalization, combination, or
reclassification), the Committee shall make such adjustments as it may deem
appropriate to the aggregate number of shares of Common Stock deemed to be held
in Participants' Accounts.

         17. NON-TRANSFERABILITY OF GRANTS. Benefits under this Plan are not
assignable or transferable except by will or the laws of descent and
distribution.

         18. FUNDED STATUS OF BENEFITS.

                 (a) The Plan is intended to be an unfunded deferred
         compensation arrangement, with the benefits payable, when due, by the
         Company out of its general assets.


                                      - 8 -
<PAGE>   9

                 (b) All rights created under the Plan shall be mere unsecured
         contractual rights of Participants against the Company.

                 (c) Nothing in this Plan shall in any way diminish any rights
         of a Participant to pursue his or her rights as a general creditor of
         Company with respect to his or her benefits under the Plan.

         19. AMENDMENT AND TERMINATION. The Board may amend or terminate this
Plan at any time.

         20. NO ADDITIONAL RIGHTS.

                 (a) Neither the adoption of this Plan nor the participation of
         any Outside Director in this Plan shall:

                        (i) Affect or restrict in any way the power of the
                 Company to undertake any corporate action otherwise permitted
                 under applicable law; or

                        (ii) Confer upon any Participant the right to continue
                 performing services for the Company as a Director, nor shall it
                 interfere in any way with the right of the Stockholders to
                 terminate the services of any Participant as a Director at any
                 time, with or without cause.

                 (b) No Participant shall have any rights as a stockholder with
         respect to any shares of Common Stock payable pursuant to the terms of
         this Plan until the date a certificate for such shares has been issued
         to the Participant.

         21. SECURITIES LAW RESTRICTIONS. No shares of Common Stock shall be
issued under this Plan unless the Company shall be satisfied that the issuance
will be in compliance with applicable federal and state securities laws, as well
as the rules of any stock exchange (or other securities market) on which the
Common Stock is traded. Notwithstanding anything in the Plan to the contrary, in
no event will the Company issue more than 25,000 shares of Common Stock under
the Plan until the Company receives stockholder approval of the Plan. The
limitation of the preceding sentence shall be applied in a manner so as to
comply with Nasdaq MarketPlace Rule 4460(i)(1)(A).

         22. INDEMNIFICATION. To the maximum extent permitted by law, the
Company shall indemnify each member of the Board, as well as any other employee
of the Company with duties under this Plan, against any and all liabilities and
expenses (including any amount paid in judgment or settlement) reasonably
incurred by the individual in connection with any claims against the individual
by reason of the performance of the individual's duties under this Plan, unless
the losses are due to the individual's gross negligence or lack of good faith.

                  [remainder of page intentionally left blank]


                                      - 9 -
<PAGE>   10

         23. GOVERNING LAW. This Plan and all actions taken thereunder shall be
governed by and construed in accordance with the laws of the State of Delaware.


                                     - 10 -

<PAGE>   1
                                                                 EXHIBIT 10.24
                             OFFICE LEASE AGREEMENT
================================================================================
This Lease Agreement (this "Lease") is made this 7 day of November, 1998,
between B.O.III, LTD., (hereinafter called "Landlord"), and IXC COMMUNICATIONS
SERVICES, INC., a (hereinafter called ("Tenant"). Ibis Lease consists of this
paragraph, the Basic Lease Provisions, the Supplemental Lease Provisions and
each exhibit, rider, schedule and addendum attached to the Basic Lease
Provisions and Supplemental Lease Provisions. Each capitalized term used, but
not defined, in the Supplemental Lease Provisions shall have the meaning
assigned to such term in the Basic Lease Provisions.

                             BASIC LEASE PROVISIONS

1 .     Building:
        a.  Name:                    Barton Oaks III
            Address:                 901 South Mopac Expressway, Building 111,
                                     Austin, Texas 78746.
        b.  Agreed Rentable Area:    121,432 square feet.

2.      Premises:

        a.  Suite #:                 200
            Floors:                  Second Floor.
        b.  Agreed Rentable Area:    24,134 square feet. The number of rentable
                                     square feet in the Premises is determined
                                     by multiplying the number of usable square
                                     feet in the Premises (calculated in
                                     accordance with the BOMA Standard
                                     [hereinafter defined] by 1. 15). The term
                                     "BOMA Standard" shall mean the American
                                     National Standard method of measuring floor
                                     area in office buildings of the Building
                                     Owners and Managers Association (ANSI 265.1
                                     - 1996).

3.      a.     Basic Rent (See Article 2, Supplemental Lease Provisions):

<TABLE>
<CAPTION>
                                                  Basic           Basic
                       Rent Rate                  Annual          Monthly
  Period               Square Foot                Rent            Rent
  ------               -----------                ----            ----
<S>                    <C>                        <C>             <C>
1/15/99- 1/31/2002     $17.50 per square foot     $422,345.00     $35,195.42
</TABLE>

        b.     Each "Lease Year" shall be a twelve (12) month period commencing
               with the Commencement Date or any anniversary date of the
               Commencement Date and ending on but not including the next
               occurring anniversary date of the Commencement Date; provided,
               however, the last Lease Year shall mean the period of time from
               and including the anniversary date of the Commencement Date that
               immediately precedes the Expiration Date to and including the
               Expiration Date. Each "Lease Month" shall be a period of time
               commencing on the same numeric day as the Commencement Date and
               ending on (but not including) the day in the next calendar month
               that is the same numeric date as the Commencement Date.

4.      Tenant's Pro Rata Share Percentage: 19.87% (the Agreed Rentable Area of
        the Premises divided by the Agreed Rentable Area of the Building,
        expressed in a percentage).

5.      Term:               Three (3) years (see Article 1, Supplemental Lease
                            Provisions).

6.      Commencement Date:  January 15, 1999 (see Article 1, Supplemental Lease
                            Provisions).

7.      Expiration Date:    January 31, 2002 (see Article 1, Supplemental Lease
                            Provisions).

8.      Security Deposit:   $102,569.50 (see Article 3, Supplemental Lease
                            Provisions).

9.      Tenant's Broker:    CB Richard Ellis (such broker is represented by
                            Charles Dixon/Volney Campbell .

10.     Permitted Use:      General Office Purposes Only (see Article 4,
                            Supplemental Lease Provisions).

11.     All payments shall be sent to Landlord in care of Hill Partners
        Management Co., Inc. ("Property Manager") at 2800 Industrial Terrace,
        Austin, Texas 78758-7604 or such other place as Landlord may designate
        from time to time. All payments shall be in the form of check until
        otherwise designated by Landlord, provided that payment by check shall
        not be deemed made if the check is not duly honored with good funds.

12.     Parking:            SEE SECTION 15.17 and Exhibit F, if any, attached to
                            the Supplemental Lease Provisions.

13.     Addresses for notices due under this Lease (see Article 14, Supplemental
        Lease Provisions):

        LANDLORD:                             Tenant:
        B.O. III, LTD.                        IXC COMMUNICATIONS SERVICES, INC.
        By: Office/Industrial, Inc.,
            General Partner

        By: /s/ RICHARD S. HILL               By: /s/ STUART K. COPPENS
            ------------------------------        ------------------------------
        By: Richard S. Hill, President        By: Stuart K. Coppens
            c/o Hill Partners Management          Vice President
            Company, Inc.                         1122 S. Capital of TX Hwy
            2800 Industrial Terrace               Austin, TX  78746
            Austin, TX 78758                      Atten:
            Atten: BethAnn Signor                 Telephone:  512/427-3757
            Telephone: 512/719-3050               Fax:  512/329-8638
            Fax: 512/835-1222

Landlord and Tenant are initialing these Basic Lease Provisions in the
appropriate space provided below as an acknowledgment that they are a part of
this Lease.
<PAGE>   2

                                TABLE OF CONTENTS
                                       FOR
                          SUPPLEMENTAL LEASE PROVISIONS

Description:

ARTICLE I     TERM AND POSSESSION............................................1

ARTICLE 2     RENT...........................................................2

ARTICLE 3     SECURITY DEPOSIT...............................................5

ARTICLE 4     OCCUPANCY AND USE..............................................5

ARTICLE 5     UTILITIES AND SERVICES.........................................7

ARTICLE 6     MAINTENANCE, REPAIRS, ALTERATIONS AND IMPROVEMENTS.............9

ARTICLE 7     INSURANCE, FIRE AND CASUALTY..................................10

ARTICLE 8     CONDEMNATION..................................................13

ARTICLE 9     LIENS.........................................................13

ARTICLE 10    TAXES ON TENANT'S PROPERTY....................................13

ARTICLE 11    SUBLETTING AND ASSIGNING......................................14

ARTICLE 12    TRANSFERS BY LANDLORD, SUBORDINATION AND TENANT'S 
              ESTOPPEL CERTIFICATE..........................................16

ARTICLE 13    DEFAULT.......................................................16

ARTICLE 14    NOTICES.......................................................19

ARTICLE 15    MISCELLANEOUS PROVISIONS......................................19

                           LIST OF EXHIBITS AND RIDERS
                                       TO
                          SUPPLEMENTAL LEASE PROVISIONS

        Exhibit A      Floor Plan
        Exhibit B     Land Legal Description
        Exhibit C     Intentionally Omitted
        Exhibit D     Work Letter
        Exhibit E     Acceptance of Premises Memorandum
        Exhibit F     Parking Agreement

        Rider 1       Right to Audit
        Rider 2       Right to Sublease or Assign to Affiliate and Additional
                      Subleasing Rights
        Rider 3       Cap on Certain Operating Expenses
        Rider H- I    Tenant's Study, Testing and Inspection Rights


                                       ii

<PAGE>   3

                          SUPPLEMENTAL LEASE PROVISIONS

                                    ARTICLE I
                               TERM AND POSSESSION

SECTION 1.1 LEASE OF PREMISES, COMMENCEMENT AND EXPIRATION.

 1.101  Lease of Premises. In consideration of the mutual covenants herein,
        Landlord hereby leases to Tenant and Tenant hereby leases from Landlord,
        subject to all the terms and conditions of this Lease, the portion of
        the Building (as described in Item 1 of the Basic Lease Provisions)
        described as the Premises in Item 2 of the Basic Lease Provisions and
        that is more particularly described by the crosshatched area on Exhibit
        A attached hereto (hereinafter called the "Premises"). The Building, the
        land (the "Land") on which the Building is situated (which Land is more
        particularly described on Exhibit B attached hereto), the parking
        garage, if any, located on the Land and serving the Building (the
        "Garage") and all other improvements located on and appurtenances to the
        Building, the Garage and the Land are referred to collectively herein as
        the "Property".

 1.102  Agreed Rentable Area. The agreed rentable area of the Premises is hereby
        stipulated to be the "Agreed Rentable Area" of the Premises set forth in
        Item 2b of the Basic Lease Provisions. The agreed rentable area of the
        Building is hereby stipulated to be the "Agreed Rentable Area" of the
        Building set forth in Item lb of the Basic Lease Provisions.

 1.103  Initial Term and Commencement. The initial term of this Lease shall be
        the period of time specified in Item 5 of the Basic Lease Provisions.
        The initial term shall commence on the Commencement Date (herein so
        called) set forth in Item 6 of the Basic Lease Provisions (as such
        Commencement Date may be adjusted pursuant to Section 3 of the Work
        Letter attached hereto as Exhibit D) and, unless sooner terminated
        pursuant to the terms of this Lease, the initial term of this Lease
        shall expire, without notice to Tenant, on the Expiration Date (herein
        so called) set forth in Item 7 of the Basic Lease Provisions (as such
        Expiration Date may be adjusted pursuant to Section 3 of the Work
        Letter).

SECTION 1.2 INSPECTION AND DELIVERY OF PREMISES, CONSTRUCTION OF LEASE SPACE
            IMPROVEMENTS AND POSSESSION.

 1.201  Delivery. Tenant hereby accepts delivery of the Premises. Tenant
        acknowledges that Tenant has inspected the Premises and the Common Areas
        (as hereinafter defined) and, except for punch list items and latent
        defects discovered and reported to Landlord by Tenant within 180 days
        from the Commencement Date, hereby (a) accepts the Common Areas in "as
        is" condition for all purposes and (a) subject to Landlord's completion
        of its obligations under the Work Letter, Tenant hereby accepts the
        Premises (including the suitability of the Premises for the Permitted
        Use) for all purposes.

 1.202  Completion. Landlord will perform or cause to be performed the work
        and/or construction of Tenant's Improvements (as defined in the Work
        Letter) in accordance with the terms of the Work Letter and will use
        reasonable efforts to Substantially Complete (as defined in the Work
        Letter) Tenant's Improvements by the Commencement Date. If Tenant's
        Improvements are not Substantially Complete by the Commencement Date set
        forth in Item 6 of the Basic Lease Provisions for any reason whatsoever,
        Tenant's sole remedy shall be an adjustment of the Commencement Date and
        the Expiration Date to the extent permitted under Section 3 of the Work
        Letter.

 1.203  Acceptance of Premises Memorandum. Upon Substantial Completion (as
        defined in the Work Letter) of Tenant's Improvements, Landlord and
        Tenant shall execute the Acceptance of Premises Memorandum (herein so
        called) attached hereto as Exhibit E. If Tenant occupies the Premises
        without executing an Acceptance of Premises Memorandum, Tenant shall be
        deemed to have accepted the Premises for all purposes and Substantial
        Completion shall be deemed to have occurred on the earlier to occur of
        (i) actual occupancy or (ii) the Commencement Date set forth in Item 6
        of the Basic Lease Provisions.

SECTION 1.3 REDELIVERY OF THE PREMISES.

 1.301  Obligation to Redeliver. Upon the expiration or earlier termination of
        this Lease or upon the exercise by Landlord of its right to re-enter the
        Premises without terminating this Lease, Tenant shall immediately
        deliver to Landlord the Premises free of offensive odors and in a safe,
        clean, neat, sanitary and operational condition, ordinary wear and tear
        excepted, together with all keys and parking and access cards. Tenant
        shall, by the Expiration Date or, if this Lease is earlier terminated,
        within seven (7) days after the termination, at the sole expense of
        Tenant, remove from the Premises (unless Landlord is asserting its lien
        rights therein) any equipment, machinery, trade fixtures and personalty
        installed or placed in the Premises by or on behalf of Tenant. All
        removals and work described above shall be accomplished in a good and
        workmanlike manner and shall be conducted so as not to damage the
        Premises or the Building or the plumbing, electrical lines or other
        utilities serving the Building. Tenant shall, at its expense, promptly
        repair any damage caused by any such removal or work. If Tenant fails to
        deliver the Premises in the condition aforesaid, then Landlord may
        restore the Premises to such a condition at Tenant's expense. All
        property required to be removed pursuant to this Section not removed
        within time period required hereunder shall thereupon be conclusively
        presumed to have been abandoned by Tenant and Landlord may, at its
        option, take over possession of such property and either (a) declare the
        same to be the property of Landlord by written notice to Tenant at the
        address provided herein or (b) at the sole cost and expense of Tenant,
        remove and store and/or dispose of the same or any part thereof in any
        manner that Landlord shall choose without incurring liability to Tenant
        or any other person.

 1.302  Failure to Deliver. Notwithstanding any provision or inference to the
        contrary herein contained, in the event that Tenant fails to deliver to
        Landlord (and surrender possession of) all of the Premises upon the
        expiration or earlier termination of this Lease (or the applicable
        portion of the Premises if this Lease expires or terminates as to only a
        portion of the Premises) on the date of expiration or earlier
        termination, then Landlord may, without judicial process and without
        notice of any kind, immediately enter upon and take absolute possession
        of the Premises or applicable portion thereof, expel or remove Tenant
        and any other person or entity who may be occupying the Premises or
        applicable portion thereof, change the locks to the Premises or
        applicable portion


                                       1

<PAGE>   4

        thereof (in which event, Tenant shall have no right to any key for the
        new locks), limit elevator access to the Premises or APPLICABLE portion
        thereof, and take any other actions as are necessary for Landlord to
        take absolute possession of the Premises or applicable portion thereof
        The foregoing rights are without prejudice and in addition to, and shall
        not in any way limit Landlord's rights under, Section 1.4 below.

SECTION 1.4 HOLDING OVER. In the event Tenant or any party under Tenant claiming
        rights to this Lease, retains possession of the Premises after the
        expiration or earlier termination of this Lease, such possession shall
        constitute and be construed as a tenancy at will only, subject, however,
        to all of the terms, provisions, covenants and agreements on the part of
        Tenant hereunder; such parties shall be subject to immediate eviction
        and removal and Tenant or any such party shall pay Landlord as rent for
        the period of such holdover an amount equal to one and one-half (I -
        1/2) times the Basic Annual Rent and Additional Rent (as hereinafter
        defined) in effect immediately preceding expiration or termination, as
        applicable, prorated on a daily basis. Tenant shall also pay any and all
        damages sustained by Landlord as a result of such holdover provided
        Landlord has notified Tenant, 30 days prior, of the potential damages
        that Landlord will incur. The rent during such holdover period shall be
        payable to Landlord from time to time on demand; provided, however, if
        no demand is made during a particular month, holdover rent accruing
        during such month shall be paid in accordance with the provisions of
        Article 2. Tenant will vacate the Premises and deliver same to Landlord
        within 15 days of Tenant's receipt of notice from Landlord to so vacate.
        No holding over by Tenant, whether with or without consent of Landlord,
        shall operate to extend the term of this Lease; no payments of money by
        Tenant to Landlord after the expiration or earlier termination of this
        Lease shall reinstate, continue or extend the term of this Lease; and no
        extension of this Lease after the expiration or earlier termination
        thereof shall be valid unless and until the same shall be reduced to
        writing and signed by both Landlord and, Tenant.

                                    ARTICLE 2
                                      RENT

SECTION 2.1 BASIC RENT. Tenant shall pay as annual rent for the Premises the
        applicable Basic Annual Rent shown in Item 3 of the Basic Lease
        Provisions. The Basic Annual Rent shall be payable in monthly
        installments equal to the applicable Basic Monthly Rent shown in Item 3
        of the Basic Lease Provisions in advance, without demand, offset or
        deduction except as provided in this Lease, which monthly installments
        shall commence on the Commencement Date and shall continue on the first
        (I st) day of each calendar month thereafter. If the Commencement Date
        occurs on a day other than the first day of a calendar month or the
        Expiration Date occurs on a day other than the last day of a calendar
        month, the Basic Monthly Rent for such partial month shall be prorated.

SECTION 2.2 ADDITIONAL RENT.

 2.201  Definitions. For purposes of this Lease, the following definitions shall
        apply:

        (a) "Additional Rent", for a particular calendar year, shall equal the
            sum of all (i) Operating Expenses (as hereinafter defined) for the
            applicable calendar year multiplied by Tenant's Pro Rata Share
            Percentage (as set forth in Item 4-.a 4 of the Basic Lease
            Provisions) plus (ii) Real Estate Taxes (as hereinafter defined) for
            the applicable calendar year multiplied by Tenant's Pro Rata Share
            Percentage plus (iii) Additional Pass Through Costs (as hereinafter
            defined) for the applicable calendar year multiplied by Tenant's Pro
            Rata Share Percentage.

        (b) "Operating Expenses" shall mean all of the costs and expenses
            Landlord incurs, pays or becomes obligated to pay in connection with
            operating, maintaining, insuring and managing the Property for a
            particular calendar year or portion thereof as determined by
            Landlord in accordance with generally accepted accounting
            principles, including, but not limited to, the following: (i)
            insurance premiums ("Insurance Premiums"); (ii) water, sewer,
            electrical and other utility charges ("Utility Expenses"); (iii)
            service, testing and other charges incurred in the operation and
            maintenance of the elevators and the plumbing, fire sprinkler,
            security, heating, ventilation and air conditioning system; (iv)
            cleaning and other janitorial services inclusive of window
            cleaning); (v) tools and supplies costs; (vi) repair costs; (vii)
            costs of landscaping, including landscape maintenance and sprinkler
            maintenance costs and rental and supply costs in connection
            therewith; (viii) security and alarm services; (ix) license, permit
            and inspection fees; (x) management fees; (xi) wages and related
            benefits payable to employees, including taxes and insurance
            relating thereto; (xii) accounting services; (xiii) legal services,
            unless incurred in connection with tenant defaults or lease
            negotiations; (xiv) trash removal; (xv) garage and parking
            maintenance, repair, repaving and operating costs; and (xvi) the
            charges assessed against the Property pursuant to any contractual
            covenants or recorded declaration of covenants or the covenants,
            conditions and restrictions of any other similar instrument
            affecting the Property. Notwithstanding the foregoing, Operating
            Expenses shall not include:

            (1) Real Estate Taxes;

            (2) Additional Pass Through Costs;

            (3) Repairs or other work occasioned by fire, windstorm or other
                casualty or condemnation;

            (4) Leasing commissions, attorneys' fees, costs and disbursements
                and other expenses incurred in connection with negotiations or
                disputes with tenants, other occupants, or prospective tenants
                or other occupants or legal fees incurred in connection with
                this Lease or the operation of the Property that are not for the
                benefit of all tenants in the Building;

            (5) Costs incurred in renovating or otherwise improving or
                decorating, painting, or redecorating space for tenants or other
                occupants or vacant space;

            (6) Depreciation and amortization;

            (7) Costs of a capital nature, including, but not limited to,
                capital improvements, capital replacements, capital repairs,
                capital equipment and capital tools, all in connection with
                generally accepted accounting principles consistently applied.
                In the event the Building is not in compliance at the time this
                Lease is executed with any Federal, State or local regulations
                or building codes, the expense to bring the Building into
                compliance with be considered capital and not an Operating
                Expense;


                                       2

<PAGE>   5

            (8)  Costs (including penalties, fines and legal expenses) incurred
                 due to violation by Landlord of the terms and conditions of
                 this Lease or any other lease in the Building or any other
                 rental arrangement covering space in the Building or the Garage
                 or any portion thereof other than costs Landlord would be
                 permitted to include in Operating Expenses absent such
                 violation;

            (9)  Fees or other compensation paid to subsidiaries or affiliates
                 of Landlord for services on or to the Property, to the extent
                 that the costs of such services exceed competitive costs of
                 such services were they not so rendered by a subsidiary of
                 affiliate;

            (10) Interest on debt or amortization payments on any mortgage(s)
                 COVERING THE PROPERTY OR ANY PART thereof, rental concessions,
                 and rental under ground or underlying lease(s);

            (11) Landlord's general partnership or corporate overhead and
                 general administrative expenses for services not specifically
                 performed for the Building; or wages, salaries, or other
                 compensation of any kind or nature paid to any executive
                 employees above the grade of building manager;

            (12) Any compensation paid to clerks, attendants, or other persons
                 in commercial concessions operated by Landlord;

            (13) Rentals and other related expenses incurred in leasing air
                 conditioning systems, elevators, or other equipment ordinarily
                 considered to be of a capital nature, except equipment which is
                 used in providing janitorial services and which is not fixed to
                 the Building;

            (14) All items and services for which Tenant reimburses Landlord or
                 pays third persons other than through Operating Expense
                 reimbursements, or for or with respect to which Landlord
                 provides selectively to one or more tenants of the Building
                 other than Tenant, without reimbursement;

            (15) Advertising and promotional expenditures;

            (16) Any costs, fines, penalties, legal fees or costs of litigation
                 incurred due to violations by Landlord, its employees, agents,
                 contractors or assigns, of any governmental rule or authority,
                 other than costs Landlord would be permitted to include in
                 Operating Expenses absent such violation;

            (17) Costs for sculpture, paintings or other objects of art;

            (18) Repairs or replacements of the roof, foundation, structure,
                 exterior walls, equipment or components of the Building caused
                 by deficient design, selection of materials or construction or
                 grossly negligent conduct of Landlord;

            (19) Interest or penalties due to late payments of taxes, utility
                 bills and other costs;

            (20) Federal and state taxes on income; death, estate or inheritance
                 taxes; franchise taxes and any taxes imposed or measured on or
                 by the income of Landlord from the operation of the Building;

            (21) Any expense in excess of Landlord's actual operating costs
                 (consequently, Landlord may not pass on to the Tenant any cost
                 which Landlord did not actually incur);

            (22) Janitor and cleaning costs related to construction;

            (23) Costs of security provided for particular tenants which is not
                 available to Tenant;

            (24) Overtime HVAC charges paid by other tenants;

            (25) Management fees paid to an affiliate of Landlord in excess of
                 three percent (3%) of the gross rentals of the Building plus
                 escalations in any calendar year or, if higher, what is
                 considered market rate for first class office buildings in
                 Austin, Texas; and

            (26) Costs attributable to repairs and replacements for which the
                 Landlord is reimbursed pursuant to any warranty.


        (c) "Real Estate Taxes" shall mean (i) all real estate taxes and other
            taxes or assessments which are levied with respect to the Property
            or any portion thereof for each calendar year, (ii) any tax,
            surcharge or assessment which shall be levied as a supplement to or
            in lieu of real estate taxes, (iii) the reasonable expenses of a
            consultant, if any, or of contesting the validity or amount of such
            real estate or other taxes and (iv) any rental, excise, sales,
            transaction, privilege or other tax or levy, however denominated,
            imposed upon or measured by the rental received hereunder or on
            Landlord's business of leasing the Premises, excepting only
            Landlord's net income taxes.

        (d) "Additional Pass Through Costs" shall mean the following costs and
            expenses incurred by Landlord from and after the Commencement Date:
            (i) subject to the limitations of clause (ii), the cost of any
            improvement made to the Property by Landlord that is required under
            any governmental law or regulation which was not promulgated, or
            which was promulgated but was not applicable to the Building, at the
            time the Building was constructed, amortized on a straight line
            basis over the useful life of such improvements, together with an
            amount equal to interest at the rate of ten percent (10%) per annum
            (the "Amortization Rate") on the unamortized balance thereof; (ii)
            the cost of any improvement made to the Common Areas of the Property
            that is required under interpretations or regulations issued after
            the Commencement Date under, or amendments made after the
            Commencement Date to, the provisions of Tex. Rev. Civ. Stat. Ann.
            art. 9102 and the provisions of the Americans With Disabilities Act
            of 1990, 42 U.S.C. Sections 12101-12213 (collectively, the
            "Disability Acts"), amortized on a straight line basis over the
            useful life of such improvements, together with an amount equal to
            interest at the Amortization Rate on the unamortized balance
            thereof-, (iii) the cost of any labor-saving or energy-saving device
            or other equipment installed in the Building (provided Landlord
            reasonably anticipates that the installation thereof will reduce
            Operating Expenses), amortized on a straight line basis over the
            useful life of such improvements, together with an amount equal to
            interest at the Amortization Rate on the unamortized balance thereof
            to the extent such device actually reduces operating expenses; and
            (iv) all other expenses which would generally be regarded as
            operating, maintenance and management costs and expenses which would
            normally be amortized over a period not to exceed five (5) years.

 2.202  Gross-Up. After the initial term of this lease, Operating Expenses,
        which vary with levels of occupancy, shall be grossed up to include all
        additional costs and expenses of owning, operating, maintaining and
        managing the Building which Landlord determines that it would have
        incurred, paid or been obligated to pay during such year if the Building
        had been ninety-five (95 %) occupied.

 2.203  Payment Obligation. In addition to the Basic Rent specified in this
        Lease, Tenant shall pay to Landlord the Additional Rent, in each
        calendar year or partial calendar year during the term of this Lease,
        payable in monthly installments as hereinafter provided and subject to
        Rider 3. On or prior to the Commencement Date and at least thirty (30)
        days prior to each calendar year thereafter

                                       3

<PAGE>   6


        (or as soon thereafter as is reasonably possible), Landlord shall give
        Tenant written notice of Tenant's estimated Additional Rent for the
        applicable calendar year and the amount of the monthly installment due
        for each month during such year. Tenant acknowledges that Tenant's
        estimated Additional Rent for calendar year 1999 is $8.00 per square
        foot of Agreed Rentable Area of the Premises, and Tenant! s monthly
        installment due for each month during calendar year 1999 is $16,089.33.
        Tenant shall pay to Landlord on the Commencement Date and on the first
        day of each month thereafter the amount of the applicable monthly
        installment, without demand, offset or deduction except as provided in
        this Lease, provided, however, ifthe applicable installment covers a
        partial month, then such installment shall be prorated on a daily basis.
        Within ninety (90) days after the end of (i) each calendar year and (ii)
        the Expiration Date or as soon thereafter as is reasonably possible,
        Landlord shall prepare and deliver to Tenant a statement showing
        Tenant's actual Additional Rent for the applicable calendar year,
        provided that with respect to the calendar year in which the Expiration
        Date occurs, (iii) that calendar year shall be deemed to have commenced
        on January I of that year and ended on the Expiration Date (the "Final
        Calendar Year") and (iv) Landlord shall have the right to estimate the
        actual Operating Expenses allocable to the Final Calendar Year but which
        are not determinable within such ninety day period. If Tenant's total
        monthly payments of Additional Rent for the applicable year are less
        than Tenant's actual Additional Rent then Tenant shall pay to Landlord
        the amount of such underpayment. If Tenant's total monthly payments of
        Additional Rent for the applicable year are more than Tenant's actual
        Additional Rent, then Landlord shall credit against the next Additional
        Rent payment or payments due from Tenant the amount of such overpayment,
        provided, however, with respect to the Final Calendar Year, Landlord
        shall pay to Tenant within thirty (30) days following the Expiration
        Date or earlier termination date the amount of such excess payments,
        less any amounts then owed to Landlord. Unless Tenant takes written
        exception to any item within thirty (30) days after the furnishing of an
        annual statement, such statement shall be considered as final and
        accepted by Tenant. Any amount due Landlord as shown on any such
        statement shall be paid by Tenant within thirty (30) days after it is
        famished to Tenant.

 2.204  Billing Disputes. If there exists any dispute as to (i) the amount of
        Additional Rent, (ii) whether a particular expense is properly included
        in Additional Rent or (iii) Landlord's calculation of Additional Rent
        (each an "Additional Rent Dispute"), the events, errors, acts or
        omissions giving rise to such Additional Rent Dispute shall not
        constitute a breach or default by Landlord under this Lease and even if
        a judgment resolving the Additional Rent Dispute is entered against
        Landlord, this Lease shall remain in full force and effect.
        Notwithstanding the existence of an Additional Rent Dispute, Tenant
        shall pay timely the amount of Additional Rent which is in dispute and
        will continue to make all subsequent payments of Additional Rent as and
        when required under this Lease, provided that the payment of such
        disputed amount and other amounts shall be without prejudice to Tenant's
        s position. If an Additional Rent is resolved in favor of Tenant,
        Landlord shall forthwith pay to Tenant the amount of Tenant! s
        overpayment of Additional Rent, together with interest from the time of
        such overpayment at the annual rate of ten percent (10%).

 2.205  Revisions in Estimated Additional Rent. If Real Estate Taxes, Insurance
        Premiums, Utility Expenses or Additional Pass Through Costs increase
        once during a calendar year or if the number of square feet of rentable
        area in the Premises increases, Landlord may revise the estimated
        Additional Rent during such year by giving Tenant written notice to that
        effect and thereafter Tenant shall pay to Landlord, in each of the
        remaining months of such year, an additional amount equal to the amount
        of such increase in the estimated Additional Rent divided by the number
        of months remaining in such year.

 2.206  Real Estate Tax Protest. Section 41.413 of the Texas Property Tax Code
        may give Tenant the right to protest before the appropriate appraisal
        review board a determination of the appraised value of the Property if
        Landlord does not so protest and requires Landlord to deliver to Tenant
        a notice of any determination of the appraised value of the Property.
        Tenant acknowledges that the Property is a multi-tenant facility, that
        any filing of a protest of appraised value by Tenant will give the
        appraisal district discretion to increase or decrease the appraised
        value, that an increase in the appraised value will affect Landlord and
        the other tenants of the Property, and that an increase in the appraised
        value may increase the taxes not only for the year in question but for
        future years, potentially beyond expiration of the Lease Term.
        Accordingly, to the extent permitted by applicable law, Tenant hereby
        waives the provisions of Section 41.413 of the Texas Property Tax Code
        (or any successor thereto). In the alternative, if Section 41.413 of the
        Texas Property Tax Code may not be waived, Tenant agrees not to protest
        any valuation unless Tenant notifies Landlord in writing of Tenant's
        intent so to protest and Landlord fails to protest the valuation within
        fifteen (15) days after Landlord receives Tenant's written notice. If
        Tenant files a protest without giving the written notice required by the
        preceding sentence, such filing shall be an event of default under this
        Lease without the necessity of any notice from Landlord, regardless of
        the provisions of Section 13.102 of this Lease. Furthermore, if Tenant
        exercises the right of protest granted by Section 41.413 of the Texas
        Property Tax Code, Tenant shall be solely responsible for, and shall
        pay, all costs of such protest. If as a result of any protest filed by
        Tenant, the appraised value of the Property is increased by the
        appraisal board, Tenant shall be solely responsible for, and shall pay
        upon demand by Landlord, all taxes (not only Tenant's Pro Rata Share
        Percentage of Real Estate Taxes) assessed against the Property in excess
        of the taxes which would have been payable in the absence of the
        protest. Tenant shall continue to pay such excess taxes until the
        determination of appraised value of the Property is changed by the
        appraisal review board, regardless of whether the increased taxes are
        incurred during the term of the Lease or thereafter. Landlord agrees,
        upon request by Tenant, to provide to Tenant a copy of the determination
        of appraised value for any year. The payment obligations of Tenant under
        this Section 2.206 shall survive the expiration or other termination of
        this Lease.

SECTION 2.3 RENT DEFINED AND NO OFFSETS. Basic Annual Rent, Additional Rent and
        all other sums (whether or not expressly designated as rent) required to
        be paid to Landlord by Tenant under this Lease (including, without
        limitation, any sums payable to Landlord under any addendum, exhibit,
        rider or schedule attached hereto) shall constitute rent and are
        sometimes collectively referred to as "Rent". Each payment of Rent shall
        be paid by Tenant when due, without prior demand therefor and without
        deduction or setoff except as provided in this Lease.

SECTION 2.4 LATE CHARGES. If more than two installments in a 12 month period of
        Basic Annual Rent or Additional Rent or any other payment of Rent under
        this Lease shall not be paid within ten (10) days after due, a "Late
        Charge" of five cents ($.05) per dollar so overdue may be charged by
        Landlord to defray Landlord's administrative expense incident to the
        handling of such overdue payments. Each Late Charge shall be payable on
        demand.


                                       4

<PAGE>   7

                                    ARTICLE 3
                                SECURITY DEPOSIT

        Tenant will pay Landlord on the date this Lease is executed by Tenant
        the Security Deposit set forth in Item 8 of the Basic Lease Provisions
        as security for the performance of the terms hereof by Tenant. Tenant
        shall not be entitled to interest thereon and Landlord may commingle
        such Security Deposit with any other funds of Landlord. The Security
        Deposit shall not be considered an advance payment of rental or a
        measure of Landlord's damages in case of default by Tenant. If Tenant
        defaults with respect to any provision of this Lease and fails to cure
        such default within the applicable time period following notice from
        Landlord, Landlord may, but shall not be required to, from time to time,
        without prejudice to any other remedy, use, apply or retain all or any
        part of this Security Deposit for the payment of any Rent or any other
        sum in default or for the payment of any other amount which Landlord may
        spend or become obligated to spend by reason of Tenant's default or to
        compensate Landlord for any other loss or damage which Landlord may
        suffer by reason of Tenant's default, including, without limitation,
        costs and attorneys' fees incurred by Landlord to recover possession of
        the Premises. If Tenant shall fully and faithfully perform every
        provision of this Lease to be performed by it, the Security Deposit
        shall be returned to Tenant within thirty (30) days after the Expiration
        Date or earlier termination date. Tenant agrees that it will not assign
        or encumber or attempt to assign or encumber the monies deposited herein
        as the Security Deposit and that Landlord and its successors and assigns
        shall not be bound by any such actual or attempted assignment or
        encumbrance. Regardless of any assignment of this Lease by Tenant,
        Landlord may return the Security Deposit to the original Tenant, in the
        absence of evidence satisfactory to Landlord of an assignment of the
        right to receive the Security Deposit or any part of the balance
        thereof.

                                    ARTICLE 4
                                OCCUPANCY AND USE

SECTION 4.1 USE OF PREMISES.

 4.101  General. The Premises shall, subject to the remaining provisions of this
        Section, be used solely for the Permitted Use (herein so called)
        specified in Item 10 of the Basic Lease Provisions. Without in any way
        limiting the foregoing, Tenant will not use, occupy or permit the use or
        occupancy of the Premises for any purpose which is forbidden by or in
        violation of any law, ordinance or governmental or municipal regulation,
        order, or certificate of occupancy, or which may be dangerous to life,
        limb or property; or permit the maintenance of any public or private
        nuisance; or do or permit any other thing which may disturb the quiet
        enjoyment of any other tenant of the Property; or keep any substance or
        carry on or permit any operation which might emit offensive odors or
        conditions from the Premises; or commit or suffer or permit any waste in
        or upon the Premises; or use any apparatus which might make undue noise
        or set up vibrations in the Building; or permit anything to be done
        which would increase the fire and extended coverage insurance rate on
        the Building or Building contents and, if there is any increase in such
        rate by reason of acts of Tenant, then Tenant agrees to pay such
        increase upon demand therefor by LANDLORD. Payment by Tenant of any such
        rate increase shall not be a waiver of Tenant's duty to comply herewith.
        Tenant shall keep the Premises neat and clean at all times. Tenant shall
        comply with, and promptly correct any violation of, each and every
        governmental law, rule or regulation relating to the Premises; provided,
        however that Landlord shall deliver the Premises to Tenant in compliance
        with all governmental laws, rules and regulations, subject to 1.2 of the
        Work Letter.

 4.102  Hazardous and Toxic Materials.

        (a) For purposes of this Lease, hazardous or toxic materials shall mean
            asbestos containing materials ("ACM") and all other materials,
            substances, wastes and chemicals classified as hazardous or toxic
            substances, materials, wastes or chemicals under then-current
            applicable governmental laws, rules or regulations or that are
            subject to any right-to-know laws or requirements.

        (b) Tenant shall not knowingly incorporate into, or use or otherwise
            place or dispose of any hazardous or toxic materials at or on the
            Premises or the Property except for use and storage of cleaning and
            office supplies used in the ordinary course of Tenant's business and
            then only if (i) such materials are in small quantities, properly
            labeled and contained, (ii) such materials are handled and disposed
            of in accordance with the highest accepted industry standards for
            safety, storage, use and disposal, (iii) notice of and a copy of the
            current material safety data sheet is provided to Landlord for each
            such hazardous or toxic material and (iv) such materials are used,
            transported, stored, handled and disposed of in accordance with all
            applicable governmental laws, rules and regulations. Landlord shall
            have the right on reasonable notice to Tenant to periodically
            inspect, take samples for testing and otherwise investigate the
            Premises for the presence of hazardous or toxic materials. Landlord,
            has not, and shall not, knowingly dispose of any hazardous or toxic
            materials on the Property and shall otherwise deal with all
            hazardous or toxic materials at the Property in a manner that will
            not materially and adversely affect Tenant's access, use or
            occupancy of the Premises. If Landlord or Tenant ever has knowledge
            of the presence of hazardous or toxic materials on the Property that
            affect the Premises, the party having knowledge shall notify the
            other party thereof in writing promptly after obtaining such
            knowledge.

        (c) Prior to commencement of any tenant finish work to be performed by
            Landlord, Tenant shall have the right to make such studies and
            investigations and conduct such tests and surveys of the Premises
            from an environmental standpoint as permitted under Rider H-1
            attached hereto. If Tenant requests that Landlord commence
            construction of Tenant's Improvements prior to exercising such
            right, Tenant shall be deemed to have waived the termination right
            set forth in Rider H-1.

        (d) If Tenant or its employees, agents or contractors shall ever violate
            the provisions of paragraph (b) of this subsection 4.102 or
            otherwise contaminate the Premises or the Property with hazardous or
            toxic materials, then Tenant shall clean-up, remove and dispose of
            the material causing the violation, in compliance with all
            applicable governmental standards, laws, rules and regulations and
            then prevalent industry practice and standards and shall repair any
            damage to the Premises or Building within such period of time as may
            be reasonable under the circumstances after written notice by
            Landlord. Tenant shall notify Landlord of its method, time and
            procedure for any clean-up or removal and Landlord


                                       5

<PAGE>   8

            shall have the right to require reasonable changes in such method,
            time of procedure or to require the same to be done after normal
            business hours. Tenant's obligations under this subsection 4.102(d)
            shall survive the termination of this Lease. Tenant represents to
            Landlord that, except as has been disclosed to Landlord, Tenant has
            never been cited for or convicted of any hazardous or toxic
            materials violations under applicable laws, rules or regulations.

 4.103  Disability Acts. Landlord, at Landlord's expense, shall be obligated to
        see that all Common Areas comply with the Disability Act requirements
        that are in effect on the Commencement Date. From and after the
        Commencement Date, Tenant shall be obligated to see that the Premises
        comply with all existing requirements of and regulations issued under
        the Disability Acts for each of the following: (i) alterations or
        improvements to any portion of the Premises performed by or on behalf of
        Tenant after the Commencement Date; (ii) obligations or complaints
        arising under or out of Title I of the Americans With Disabilities Act
        or Tenant's employer-employee obligations; and (iii) obligations or
        complaints arising under or out of the conduct or operations of Tenant's
        business (if the Premises is used for other than office purposes),
        including any obligations or requirements for barrier removal to
        customers or invitees as a commercial facility or as a public
        accommodation (as defined in the Disability Acts); and (iv) any change
        in the nature of Tenant's business, or its employees, or financial net
        worth, or Tenant's business operations that triggers an obligation under
        the Disability Acts).Subject to Section 1.2 of the Work Letter, Landlord
        shall deliver the Premises to Tenant in compliance with the Disability
        Act requirements in effect on the Commencement Date.

SECTION 4.2 COMPLIANCE WITH LAWS.

 4.201  Tenant's Compliance Obligation.

        (a) Tenant shall comply with all laws, statutes, ordinances, orders,
            permits and regulations affecting (i) Tenant's use and occupancy of
            the Premises, (ii) any improvements constructed within the Building
            by or on behalf of Tenant and (iii) any equipment installed within
            the Building by Tenant or installed by a party other than Landlord
            on behalf of Tenant, provided, however, Tenant's compliance
            obligations with respect to the Disability Acts shall be governed by
            Section 4.103 above and the applicable provisions of the Work
            Letter.

        (b) If any law, statute, ordinance, order, permit or regulation with
            which Tenant is required to comply pursuant to this Lease is
            violated and Tenant is notified or otherwise has actual knowledge of
            such violation, Tenant shall take such corrective action as is
            necessary to cause compliance.

4.202   Landlord's Compliance Obligation.

        (a) Landlord shall comply with all laws, statutes, ordinances, orders
            and regulations (i) relating to the Property (exclusive, however, of
            those with which Tenant is obligated to comply by reason of
            subsection 4.103) and (ii) non-compliance with which would adversely
            affect Tenant's use or occupancy of the Premises or Tenant's rights
            under this Lease, provided, however, Landlord's compliance
            obligations with the Disability Acts shall be as provided in Section
            4.103 above and Section 4.202 (b) below.

        (b) From and after the Commencement Date, Landlord shall be responsible
            for compliance with the Disability Acts in the Common Areas;
            provided that Landlord shall not be obligated to Tenant to make any
            alterations to the Common Areas to effect such compliance.

SECTION 4.3 RULES AND REGULATIONS. Tenant will comply with such rules and
        regulations (the "Rules and Regulations") generally applying uniformly
        to tenants in the Building as may be reasonably adopted from time to
        time by Landlord for the management, safety, care and cleanliness of,
        and the preservation of good order and protection of property in, the
        Premises and the Building and at the Property. All such Rules and
        Regulations are hereby made a part hereof. The Rules and Regulations in
        effect on the date hereof are on file with the Property Manager. All
        changes and amendments to the Rules and Regulations sent by Landlord to
        Tenant in writing and conforming to the foregoing standards shall be
        carried out and observed by Tenant. Landlord hereby reserves all
        reasonable rights necessary to implement and enforce the Rules and
        Regulations and each and every provision of this Lease.

SECTION 4.4 ACCESS. Without being deemed guilty of an eviction of Tenant and
        without abatement of Rent, Landlord and its authorized agents shall have
        the right to enter the Premises, upon reasonable notice, to inspect the
        Premises, to show the Premises to prospective lenders, purchasers and
        during the last three (3) months of the Term to prospective tenants and
        to fulfill Landlord's obligations or exercise its rights (including
        without limitation Landlord's RESERVED RIGHT [AS HEREINAFTER DEFINED))
        UNDER THIS LEASE; PROVIDED that Landlord shall enter the Premises for
        showing the Premises to third parties only during the normal business
        hours of the Tenant, unless otherwise agreed by Tenant, and provided
        further THAT LANDLORD SHALL NOT UNREASONABLY INTERFERE with Tenant's use
        of the Premises in connection with any such entry. For each of the
        aforesaid purposes, Landlord shall at all times have and retain a key
        with which to unlock the doors to and within the Premises, excluding
        Tenant's vaults, files and safes. Landlord shall have the right to use
        any and all means which Landlord may deem proper to enter the Premises
        in an emergency without liability therefor other than for Landlord's
        gross negligence or willful misconduct.

SECTION 4.5 QUIET POSSESSION. Provided Tenant timely pays Rent and observes and
        performs all of the covenants, conditions and provisions on Tenant's
        part to be observed and performed hereunder, Tenant shall have the quiet
        possession of the Premises for the entire term hereof, subject to all of
        the provisions of this Lease and all laws and restrictive covenants to
        which the Property is subject.

SECTION 4.6 PERMITS. Landlord shall obtain the certificate of occupancy required
        for occupancy of the Premises following construction of Tenant's
        Improvements. Tenant shall pay for the cost of any such certificate of
        occupancy, provided that Tenant shall be entitled to have such cost
        funded from the Finish Allowance, if any, PROVIDED FOR IN THE WORK
        Letter. If any governmental license or permit shall be required for the
        proper and lawful conduct of Tenant's business in the Premises or any
        part thereof, Tenant, at its expense, shall procure and thereafter
        maintain such license or permit.


                                       6

<PAGE>   9

                                    ARTICLE 5
                             UTILITIES AND SERVICES

SECTION 5.1 SERVICES TO BE PROVIDED.

        Landlord agrees to furnish or cause to be famished to the Premises, the
        utilities and services described in subsections 5. 101 through 5.106
        below, subject to all other provisions of this Lease.

 5.101  Elevator Service. Except for holidays generally recognized by businesses
        and emergencies, Landlord shall provide automatic elevator facilities on
        generally accepted business days from 7:00 a.m. to 6:00 p.m. and on
        Saturdays from 8:00 a.m. to 1:00 p.m. and have at least one (1) elevator
        available for use at all other times.

 5.102  Heat and Air Conditioning. On generally accepted business days from 7:00
        a.m. to 6:00 p.m. and on Saturdays (other than holidays generally
        recognized by businesses) from 8:00 a.m. to 1:00 p.m., Landlord shall
        ventilate the Premises and furnish heat or air conditioning, at such
        temperatures and in such amounts as is customary in buildings of
        comparable size, quality and in the general vicinity of the Building,
        with such adjustments as Landlord reasonably deems necessary for the
        comfortable occupancy of the Premises, subject to events of force
        majeure and any governmental requirements, ordinances, rules,
        regulations, guidelines or standards relating to, among other things,
        energy conservation. Upon request, Landlord shall make available, at
        Tenant's expense, after hours heat or air conditioning. The charge and
        the hourly rate for the use of after hours heat or air conditioning
        shall be $25.00 per hour per floor.

 5.103  Electricity.

        (a) Landlord shall furnish to the Premises electric current in such
            capacity as is required by the office lighting and receptacles
            included in Tenant's Improvements, provided, however, Tenant shall
            be solely responsible for the costs of electrical consumption
            (without duplication) by equipment which requires a voltage GREATER
            THAN 208 VOLTS SINGLE PHASE (SUCH consumption is herein referred to
            as "Excess Consumption" and the costs of Excess Consumption are
            herein referred to as "Excess Consumption Costs").

        (b) Landlord may, from time to time, engage a reputable consultant to
            conduct a survey of electrical usage within the Premises or install
            one or more submeters to measure electrical usage within the
            Premises or a particular floor of the Premises. If the survey or
            submeters reflect Excess Consumption for a 60 day period, then (i)
            Tenant shall be responsible for the costs of any such surveys and
            submeters, (ii) Landlord shall have the right to install permanent
            submeters to measure the electrical consumption within the Premises
            (which permanent submeters shall constitute a part of Tenant's
            Submeters, as hereinafter defined), (iii) Tenant shall pay for the
            cost of acquiring, maintaining, repairing and reading such
            submeters, and (iv) Tenant shall pay the Excess Consumption Costs.

        (c) Tenant shall not (i) use electric current in excess of the capacity
            of the feeders or lines to the Building as of the Commencement Date
            or the risers or wiring installation of the Building or the Premises
            as of the Commencement Date, or (ii) install any electrical plugs,
            connections or outlets which supply a voltage greater than 208 volts
            single phase without first notifying Landlord and arranging for the
            installation of a permanent submeter (which shall be deemed to be
            part of Tenant's Submeters), at Tenant's expense, to measure the
            electrical power consumed by the equipment and/or machinery hooked
            or plugged into such plugs, connections or outlets. All submeters
            installed by Landlord or Tenant to measure electrical usage by
            certain pieces of equipment located within the Premises together
            with any submeters installed by Landlord pursuant to paragraph (b)
            of this subsection are herein collectively referred to as "Tenant's
            Submeters". Landlord will maintain and repair Tenant's Submeters, at
            Tenant's cost.

        (d) Upon the installation of Tenant's Submeters, if any, Landlord will,
            at Tenant's cost, on or about the first day of each month during the
            Term of this Lease, read Tenant's Submeters and record such readings
            for purposes of determining Metered Electrical Expenses (hereinafter
            defined). The cost of electricity consumed within each separately
            metered portion of the Premises and by each separately metered piece
            of equipment within the Premises ("Metered Electrical Expenses")
            shall be equal to the sum of (i) the kilowatts of electricity
            consumed within the separately metered portions of the Premises (as
            measured by the applicable Tenant's Submeters) during the applicable
            month (or other applicable period) and (ii) the kilowatts of
            electricity consumed by each separately metered equipment within the
            Premises (as measured by the applicable Tenant's Submeters),
            multiplied by (iii) the cost per kilowatt of electricity charged to
            Landlord by the public utility for electricity consumed within the
            Building during the applicable month (or other applicable period).
            Landlord may, from time to time, invoice Tenant for Metered
            Electrical Expenses (as well as any Excess Consumption Costs
            determined by a reputable consultant) and Tenant shall, within ten
            (10) days after receiving an invoice therefor, pay Landlord the
            amount of the Metered Electrical Expenses (and/or, as applicable,
            any Excess Consumption Costs determined by a reputable consultant)
            covered by such invoice. Each such invoice submitted by Landlord to
            Tenant shall include (i) the period of consumption covered by such
            invoice, (ii) the beginning and ending readings for each of Tenant's
            Submeters for such period, (iii) Landlord's calculations of the
            Metered Electrical Expenses covered by such invoice, and (iv) if
            applicable, the independent electrical consultant's calculations of
            Excess Consumption and the Excess Consumption Costs.

 5.104  Water. Landlord shall furnish water for drinking, cleaning and lavatory
        purposes only.

 5.105  Janitorial Services. Landlord shall provide janitorial services to the
        Premises, comparable to THAT PROVIDED IN OTHER OFFICE buildings of
        similar size, quality and in the general vicinity of the Building and
        generally in the MANNER SUITABLE FOR "CLASS A" office space, provided
        the Premises are used exclusively as offices and further provided Tenant
        complies with SUBSECTION 6.201 below.


                                       7

<PAGE>   10

 5.106  Common Areas. Landlord shall perform routine maintenance in the Common
        Areas (hereinafter defined).

 5.107  Bulbs and Ballasts. Landlord shall provide Building standard bulbs and
        ballasts as necessary in the Premises. Landlord shall also provide
        non-building standard bulbs and ballasts provided Tenant shall pay the
        cost thereof All amounts due under this subsection for such non-building
        standard bulbs shall be paid to Landlord within thirty (30) days after
        receipt of an invoice therefor.

 SECTION 5.2 ADDITIONAL SERVICES. Landlord may impose a reasonable charge for
        any utilities and services, including without limitation, air
        conditioning, electrical current and water, provided by Landlord by
        reason of any use of the services at any time other than the hours set
        forth in subsection 5.102 above or beyond the levels or quantities that
        Landlord agrees herein to famish or because of special electrical,
        cooling or ventilating needs created by Tenant's hybrid telephone
        equipment, computers or other equipment. In no event will Landlord be
        required to provide any additional services if Tenant is in breach of
        its obligation to pay any Rent hereunder as and when due and payable.

 SECTION 5.3 TENANT'S OBLIGATION. Tenant agrees to cooperate fully at all times
        with Landlord and to abide by all regulations and requirements which
        Landlord reasonably prescribes for the use of the above utilities and
        services.

 SECTION 5.4 SERVICE INTERRUPTION.

 5.401  SERVICE INTERRUPTIONIWAIVER OF LANDLORD LIABILITY. LANDLORD SHALL NOT BE
        LIABLE FOR AND, EXCEPT AS PROVIDED IN SUBSECTION 5.402 BELOW, TENANT
        SHALL NOT BE ENTITLED TO ANY ABATEMENT OR REDUCTION OF RENT BY REASON OF
        LANDLORD'S FAILURE TO MAINTAIN TEMPERATURE OR ELECTRICAL CONSTANCY
        LEVELS OR TO FURNISH ANY OF THE FOREGOING SERVICES when such failure is
        caused by accident, breakage, repairs, strikes, lockouts or other labor
        disturbance or labor dispute of any character, governmental regulation,
        moratorium or other governmental action, inability to obtain
        electricity, water or fuel, or by any cause beyond Landlord's reasonable
        control (collectively, "Uncontrollable Events"), NOR SHALL ANY SUCH
        UNCONTROLLABLE EVENT OR RESULTS OR EFFECTS THEREOF BE CONSTRUED AS AN
        EVICTION (CONSTRUCTIVE OF ACTUAL) OF TENANT OR AS A BREACH OF THE
        IMPLIED WARRANTY OF SUITABILITY, OR RELIEVE TENANT FROM THE OBLIGATION
        TO PERFORM ANY COVENANT OR AGREEMENT HEREIN AND IN NO EVENT SHALL
        LANDLORD BE LIABLE FOR DAMAGE TO PERSONS OR PROPERTY (INCLUDING, WITHOUT
        LIMITATION, BUSINESS INTERRUPTION) OR BE IN DEFAULT HEREUNDER, AS A
        RESULT OF ANY SUCH UNCONTROLLABLE EVENT OR RESULTS OR EFFECTS THEREOF.

 5.402  Limited Right to Abatement of Rent. If any portion of the Premises
        becomes unfit for occupancy because Landlord fails to deliver any
        service as required under Section 5. 101 through 5.104 above (each an
        "Essential Service") for any period (other than a reconstruction period
        conducted pursuant to Section 7.1 or Article 8 below) exceeding fifteen
        (15) consecutive days after written notice by Tenant to Landlord and
        provided such failure is not caused by Tenant, Tenant's Contractors or
        any of their respective agents or employees, Tenant shall be entitled to
        a fair partial abatement of Basic Annual Rent and Additional Rent for
        any such portion of the Premises from the occurrence until such portion
        is again fit for occupancy.

 5.403  Exclusive Remedy. Tenant's sole and exclusive remedy for a failure by
        Landlord to provide any Essential Service to the Premises shall be
        Tenant's remedy set forth in subsection 5.402.

SECTION 5.5 MODIFICATIONS. Notwithstanding anything herein to the contrary,
        Landlord reserves the right from time to time to make reasonable
        modifications to the above standards for utilities and services,
        provided that such modifications do not materially decrease the level of
        utilities and services available to Tenant, and provided further that
        such modifications apply equally or no more favorably to other tenants
        in the Building.

SECTION 5.6 TELECOMMUNICATION EQUIPMENT. In the event that Tenant wishes at any
        time to utilize the services of a telephone or telecommunications
        provider whose equipment is not then servicing the Building, no such
        provider shall be permitted to install its lines or other equipment
        within the Building without first securing the prior written approval of
        the Landlord, which approval shall include, without limitation, approval
        of the plans and specifications for the installation of the lines and/or
        other equipment within the Building. Landlord's approval shall not be
        deemed any kind of warranty or representation by Landlord, including,
        without limitation, any warranty or representation as to the
        suitability, competence, or financial strength of the provider. Without
        limitation of the foregoing standard, unless all of the following
        conditions are satisfied to Landlord's satisfaction, it shall be
        reasonable for Landlord to refuse to give its approval: (i) Landlord
        shall incur no expense whatsoever with respect to any aspect of the
        provider's provision of its services, including without limitation, the
        costs of installation, materials and services; (ii) prior to
        commencement of any work in or about the Building by the provider, the
        provider shall supply Landlord with such written indemnities, insurance,
        financial statements, and such other items as LANDLORD DETERMINES to be
        reasonably necessary to protect its financial interests and the
        interests of the Building relating to the proposed activities of the
        provider; (iii) the provider agrees to abide by such rules and
        regulations, building and other codes, job site rules and such other
        requirements as are determined by Landlord to be reasonably necessary to
        protect the interests of the Building, the tenants in the Building and
        Landlord, in the same or similar manner as Landlord has the right to
        protect itself AND THE BUILDING WITH RESPECT to proposed alterations as
        described in Section 6.303 of this Lease; (iv) Landlord determines that
        there is sufficient space in the Building for the placement of all of
        the provider's equipment and materials; (v) the provider agrees to abide
        by Landlord requirements, if any, that provider use existing Building
        conduits and pipes or use BUILDING CONTRACTORS (OR OTHER CONTRACTORS
        reasonably approved by Landlord); (vi) Landlord receives from the
        provider such compensation as is determined by Landlord to compensate it
        for space used in the Building for the storage and maintenance of the
        PROVIDER'S EQUIPMENT FOR THE FAIR MARKET value of a provider's access to
        the Building, and the costs which may reasonably be expected to be
        incurred by Landlord; (vii) the provider agrees to deliver to Landlord
        detailed "as built" plans immediately after the installation of the
        provider's equipment is complete; and (viii) all of the foregoing
        matters are documented in a written license agreement between Landlord
        and the provider, the form and content of which are reasonably
        satisfactory to Landlord.

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                                    ARTICLE 6
               MAINTENANCE, REPAIRS, ALTERATIONS AND IMPROVEMENTS

 SECTION 6.1 LANDLORD'S OBLIGATION TO MAINTAIN AND REPAIR. Landlord shall
        (subject to Section 7. 1, Section 7.4, Article 8 below and Landlord's
        rights under Section 2.2 above and except for ordinary wear and tear),
        maintain the foundation, exterior walls and roof and load bearing
        elements of the Building. Except for load bearing elements of the
        Building located within the Premises, Landlord shall not be required to
        maintain or repair any portion of the Premises.

 SECTION 6.2 TENANT'S OBLIGATION TO MAINTAIN AND REPAIR.

 6.201  Tenant's Obligation.

        (a) Subject to Sections 5.107, 6.1, 7.1 and 7.4 and Article 8 of this
            Lease, Tenant shall, at Tenant's sole cost and expense, (i) maintain
            and keep the interior of the Premises (including, but not limited
            to, all fixtures, walls, ceilings, floors, doors, windows [except
            replacement of exterior plate glass], appliances and equipment which
            are a part of the Premises) in good repair and condition, (ii)
            repair or replace any damage or injury done to the Building or any
            other part of the Property caused by Tenant, Tenant's agents,
            employees, licensees, invitees or visitors or resulting from a
            breach of its obligations under this Section 6.2 and (iii) indemnify
            and hold Landlord harmless from, and reimburse Landlord for and with
            respect to, any and all costs, expenses (including reasonable
            attomeys'fees), claims and causes of action arising from or incurred
            by and/or asserted in connection with such maintenance, repairs,
            replacements, damage or injury. All repairs and replacements
            performed by or on behalf of Tenant shall be performed in a good and
            workmanlike manner and in accordance with the standards applicable
            to alterations or improvements performed by Tenant. Tenant shall
            continue to pay Rent, without abatement, during any period that
            repairs or replacements are performed or required to be performed by
            Tenant under this Section 6.2.

        (b) Subject to Sections 7.1 and 7.4 and Article 8 of this Lease, Tenant
            shall maintain and repair all supplemental HVAC units, data and
            phone cabling, and any and all other installations and equipment
            installed in the Premises, above the acoustical ceiling tiles of the
            Premises or elsewhere in the Building (such equipment and
            installations collectively referred to as the "Tenant Service
            Equipment") installed by or on behalf of Tenant and which service
            only the Premises. Tenant shall notify Landlord prior to performing
            any repair, maintenance or replacement of the Tenant Service
            Equipment and the same shall be performed in accordance with the
            standards and conditions applicable to maintenance, repairs and
            replacements performed by Tenant pursuant to subpart (a) of this
            Section 6.20 1. Except for damage caused by Landlord, Landlord shall
            have no liability for any repair, maintenance or replacement cost
            incurred in connection with the Tenant Service Equipment. All Tenant
            Service Equipment other than the LAN room HVAC supplement, shall
            become property of the Landlord if paid by Landlord or from the
            Tenant Improvement Allowance at the expiration or earlier
            termination of the Lease; provided that, if requested by Landlord at
            the time of installation of such Tenant Service Equipment, Tenant
            shall remove the Tenant Service Equipment on or before the
            Expiration Date or, if this Lease is terminated earlier, within
            seven (7) days after such termination. All removals shall be
            accomplished in accordance with the standards for removals under
            Section 1.301 hereof. Tenant shall indemnify and hold Landlord
            harmless from, and reimburse Landlord for and with respect to, any
            and all costs, expenses (including reasonable attorneys' fees),
            claims and causes of action arising from or incurred by and/or
            asserted in connection with the (i) maintenance, repair, replacement
            of the Tenant Service Equipment and (ii) any damage or injury
            arising out of or resulting from or in connection with the Tenant
            Service Equipment.

 6.202  Rights of Landlord. Landlord shall have the same rights with respect to
        repairs performed by Tenant as Landlord has with respect to improvements
        and alterations performed by Tenant under subsection 6.303 below. In the
        event Tenant fails, in the reasonable judgment of Landlord, to maintain
        the Premises in good order, condition and repair, or otherwise satisfy
        its repair and replacement obligations under subsection 6.201 above
        within ten (10) days following written notice to Tenant of reasonably
        necessary repairs, Landlord shall have the right to perform such
        maintenance, repairs and replacements at Tenant's expense. Tenant shall
        pay to Landlord within ten (10) days after demand any such cost or
        expense incurred by Landlord, together with interest thereon at the rate
        specified in Section 15. 10 below from the date of demand until paid.

SECTION 6.3 IMPROVEMENTS AND ALTERATIONS.

 6.301  Landlord's Construction Obligation. Landlord's sole construction
        obligation under this Lease is as set forth in the Work Letter.

 6.302  Alteration of Building. LANDLORD HEREBY RESERVES THE RIGHT AND AT ALL
        TIMES SHALL HAVE THE RIGHT TO REPAIR, CHANGE, REDECORATE, ALTER,
        IMPROVE, MODIFY, RENOVATE, ENCLOSE OR MAKE ADDITIONS TO ANY PART OF THE
        PROPERTY (INCLUDING, WITHOUT LIMITATION, STRUCTURAL ELEMENTS AND LOAD
        BEARING ELEMENTS WITHIN THE PREMISES) AND TO ENCLOSE AND/OR CHANGE THE
        ARRANGEMENT AND/OR LOCATION OF DRIVEWAYS OR PARKING AREAS OR LANDSCAPING
        OR OTHER COMMON AREAS OF THE PROPERTY, ALL WITHOUT BEING HELD GUILTY OF
        AN ACTUAL OR CONSTRUCTIVE EVICTION OF TENANT OR BREACH OFTHE IMPLIED
        WARRANTY OF SUITABILITY AND WITHOUT AN ABATEMENT OF RENT (THE "RESERVED
        RIGHT"). WITHOUT IN ANY WAY LIMITING THE GENERALITY OF THE FOREGOING,
        LANDLORD'S RESERVED RIGHT SHALL INCLUDE, BUT NOT BE LIMITED TO THE RIGHT
        TO DO ANY OF THE FOLLOWING: (i) erect and construct scaffolding, pipe,
        conduit and other structures on and within and outside of the Premises
        where reasonably required by the nature of the changes, alterations,
        improvements, modifications, renovations and/or additions being
        performed, (ii) perform within and outside of the Premises all work and
        other activities associated with such changes, alterations,
        improvements, modifications, renovations and/or additions being
        performed, (iii) repair, change, renovate, remodel, alter, improve,
        modify or make additions to the arrangement, appearance, location and/or
        size of entrances or passageways, doors and doorways, corridors,
        elevators, elevator lobbies, stairs, toilets or other Common Areas or
        Service Areas, (iv) temporarily close any Common Area and/or temporarily
        suspend Building services and facilities in connection with any repairs,
        changes, alterations, modifications, renovations or additions to any
        part of the Building, (v) repair, change, alter or improve plumbing,

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<PAGE>   12

        pipes and conduits located in the Building, including without
        limitation, those located within the Premises, the Common Areas, the
        Service Corridors or the Service Areas (hereinafter defined) of the
        Building and (vi) repair, change, modify, alter, improve, renovate or
        make additions to the Building central heating, ventilation, air
        conditioning, electrical, mechanical or plumbing systems. When
        exercising the Reserved Right, Landlord will interfere with Tenant's use
        and occupancy of the Premises as little as is reasonably practicable.
        Notwithstanding the foregoing, Landlord shall not make any material
        alterations to the Building or the Common Areas during the initial Term
        of this Lease unless such alterations are (i) required by applicable
        law, (ii) performed in connection with Landlord's obligations hereunder
        or in connection with any repair of the Building, or (iv) are necessary
        for the protection of the Property.

 6.303  Alterations, Additions, Improvements and Installations by Tenant. Tenant
        shall not, without the prior written consent of Landlord, make any
        changes, modifications, alterations, additions or improvements (other
        than Tenant's Improvements under the Work Letter) to, or install any
        equipment or machinery (other than office equipment and unattached
        personal property) on, the Premises (all such changes, modifications,
        alterations, additions, improvements (other than Tenant's Improvements
        under the Work Letter) and installations approved by Landlord are herein
        collectively referred to as "Installations") if any such Installations
        would (i) affect any structural or load bearing portions of the
        Building, (ii) result i n a material increase of electrical usage above
        the normal type and amount of electrical current to be provided by
        Landlord, (iii) result in an increase in Tenant's usage of heating or
        air conditioning, (iv) impact mechanical, electrical or plumbing systems
        in the Premises or the Building, (v) affect areas of the Premises which
        can be viewed from Common Areas, (vi) require greater or more difficult
        cleaning work (e.g., kitchens, reproduction rooms and interior glass
        partitions), (vii) adversely affect Landlord's ability to deliver
        Building services to other tenants of the Building or (viii) violate any
        provision in Article 4 above or Rider HI attached hereto. As to
        Installations not covered by the preceding sentence, Tenant will not
        perform same without the prior written consent of Landlord, which
        consent shall not be unreasonably withheld or delayed. All Installations
        shall be at Tenant's sole cost and expense. Without in any way limiting
        Landlord's consent rights, Landlord shall not be required to give its
        consent until (a) Landlord approves the contractor or person making such
        Installations and approves such contractor's insurance coverage to be
        provided in connection with the work, (b) Landlord approves final and
        complete plans and specifications for the work and (c) the appropriate
        governmental agency, if any, has approved the plans and specifications
        for such work. All work performed by Tenant or its contractor relating
        to the Installations shall conform to applicable governmental laws,
        rules and regulations, including, without limitation, the Disability
        Acts. Upon completion of the Installations, Tenant shall deliver to
        Landlord "as built" plans. Each payment shall be made to Landlord within
        ten (10) days after receipt of an invoice from Landlord. All
        Installations that constitute improvements constructed within the
        Premises shall be surrendered with the Premises at the expiration or
        earlier termination of this Lease, unless Landlord requests that same be
        removed pursuant to Section 1. 3 above. Tenant shall indemnify and hold
        Landlord harmless from and reimburse Landlord for and with respect to,
        any and all costs, expenses (including reasonable attorneys' fees),
        demands, claims, causes of action and liens, arising from or in
        connection with any Installations performed by or on behalf of Tenant,
        EVEN IF THE SAME IS CAUSED BY THE NEGLIGENCE OR OTHER TORTIOUS CONDUCT
        OF LANDLORD OR LANDLORD IS STRICTLY LIABLE FOR SUCH COSTS, EXPENSES OR
        CLAIMS. All Installations performed by or on behalf of Tenant will be
        performed diligently and in a first-class workmanlike manner and in
        compliance with all applicable laws, ordinances, regulations and rules
        of any public authority having jurisdiction over the BUILDING AND/OR
        TENANT'S AND LANDLORD'S insurance carriers. Landlord will have the
        right, but not the obligation, to inspect periodically the work on the
        Premises and may require changes in the method or quality of the work.

 6.304  Approvals. Any approval by Landlord (or Landlord's architect and/or
        engineers) of any of Tenant's contractors or Tenant's drawings, plans or
        specifications which are prepared in connection with any construction of
        improvements (including without limitation, Tenant's Improvements) in
        the Premises shall not in any way be construed as or constitute a
        representation or warranty of Landlord as to the abilities of the
        contractor or the adequacy or sufficiency of such drawings, plans or
        specifications or the improvements to which they relate, for any use,
        purpose or condition.

                                    ARTICLE 7
                          INSURANCE, FIRE AND CASUALTY

SECTION 7.1 TOTAL OR PARTIAL DESTRUCTION OF THE BUILDING OR THE PREMISES. In the
        event that the Building should be totally destroyed by fire or other
        casualty or in the event the Building (or any portion thereof) should be
        so damaged that rebuilding or repairs cannot be completed, in Landlord's
        reasonable opinion, within one hundred eighty (180) days after
        commencement of repairs to the Building, Landlord may, at its option,
        terminate this Lease, in which event Basic Annual Rent and Additional
        Rent shall be abated during the unexpired portion of this Lease
        effective with the date of such damage. Landlord shall exercise the
        termination right pursuant to the preceding sentence, if at all, by
        delivering written notice of termination to Tenant within sixty (60)
        days after the casualty. In the event that the Premises should be so
        damaged by fire or other casualty that rebuilding or repairs cannot be
        completed, in Landlord's reasonable opinion, within one hundred eighty
        (180) days after the commencement of repairs to the Premises, Landlord
        shall notify Tenant within 60 days after the casualty, and Tenant may,
        at its option terminate this Lease, in which event Basic Annual Rent and
        Additional RENT SHALL BE ABATED DURING THE UNEXPIRED portion of this
        Lease, effective the date of such damage. Tenant shall exercise the
        TERMINATION RIGHT PURSUANT TO the preceding sentence, if at all, by
        delivering written notice of termination to Landlord within ten (10)
        days after being advised by Landlord that the repairs cannot be
        completed within such one hundred eighty (180) day period. In the event
        the Building or the Premises should be damaged by fire or other casualty
        and, in Landlord's reasonable opinion, the rebuilding or repairs can be
        completed within one hundred. eighty (180) days after the commencement
        of repairs to the Building or Premises, as applicable, or if the damage
        should be more serious but neither Landlord nor Tenant elect to
        terminate this Lease pursuant to this Section, in either such event
        Landlord shall, within sixty (60) days after the date of such damage,
        commence (and thereafter pursue with reasonable diligence) repairing the
        Building and the Premises (including Tenant's Improvements), but only to
        the extent of insurance proceeds actually received by Landlord for such
        repairs, to substantially the same condition which existed immediately
        prior to the happening of the casualty. In no event shall Landlord be
        required to rebuild, repair or replace any part of the furniture,
        equipment, fixtures, inventory, supplies or any other personalty or any
        other improvements (except Tenant's Improvements to the extent set forth
        in the preceding sentence), which may have been placed by Tenant within
        the Building or at the Premises. If more than fifty percent (50%) of the
        Premises is rendered untenantable by fire or other CASUALTY, ALL RENT
        SHALL be abated until repairs to the Premises are completed; provided,
        however, if less than fifty percent (50%) of the Premises is rendered
        untenantable

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<PAGE>   13

        by fire or other casualty, the Refit required to be paid hereunder shall
        be abated in proportion to the portion of the Premises, if any, which is
        rendered untenantable by fire or other casualty hereunder until repairs
        of the Premises are completed, or if the Premises are not repaired,
        until the Expiration Date hereunder; provided, that if such casualty was
        caused by Tenant, its agents, employees, licensees or invitees, Basic
        Annual Rent and Additional Rent shall be abated only to the extent
        Landlord is compensated for such Basic Annual Rent and Additional Rent
        by loss of rents insurance, if any. Notwithstanding Landlord's
        restoration obligation, in the event any mortgagee under a deed of
        trust, security agreement or mortgage on the Building should require
        that the insurance proceeds be used to retire or reduce the mortgage
        debt or if the insurance company issuing Landlord's fire and casualty
        insurance policy fails or refuses to pay Landlord the proceeds under
        such policy, Landlord shall have no obligation to rebuild and this Lease
        shall terminate upon notice by Landlord to Tenant which notice must be
        delivered, if at all, within 10 days after Landlord is notified by its
        mortgagee, and if the Lease is so terminated, all Basic Annual Rent and
        Additional Rent shall be abated during the unexpired portion of this
        Lease effective from the date of such damage. Any insurance which may be
        carried by Landlord or Tenant against loss or damage to the Building or
        to the Premises shall be for the sole benefit of the party carrying such
        insurance and under its sole control.

SECTION 7.2 TENANTS INSURANCE.

 7.201  Types of Coverage. Tenant covenants and agrees that from and after the
        date of delivery of the Premises from Landlord to Tenant, Tenant will
        carry and maintain, at its sole cost and expense, the insurance set
        forth in paragraphs (a), (b) and (c) of this subsection.

        (a) Commercial General Liability Insurance. Commercial General Liability
            Insurance covering the Premises and Tenant's use thereof against
            claims for personal or bodily injury or death or property damage
            occurring upon, in or about the Premises (including contractual
            indemnity and liability coverage), such insurance to insure both
            Tenant and, as additional named insureds, Landlord and the Property
            Manager, and to afford protection to the limit of not less than $
            1,000,000.00, combined single limit, in respect to injury or death
            to any number of PERSONS AND ALL PROPERTY DAMAGE ARISING out of any
            one (1) occurrence, with a deductible acceptable to Landlord. IF THE
            AGREED RENTABLE AREA OF THE Premises is more than 30,000 square
            feet, then, in addition to and not in lieu of the above stated
            coverage, Tenant shall carry umbrella or so called excess coverage
            in an amount not less than $1,000,000.00 over Tenant's base coverage
            amount. All insurance coverage required under this subparagraph (a)
            shall extend to any liability of Tenant arising out of the
            indemnities provided for in this Lease. Additionally, each policy
            evidencing the insurance required under this subparagraph shall
            expressly insure Tenant; in addition, each such policy shall
            expressly provide that Landlord and Property Manager are named as
            additional insureds, IT BEING THE INTENT THAT SUCH POLICIES AFFORD
            INSURANCE COVERAGE TO LANDLORD AND THE PROPERTY MANAGER AGAINST
            CLAIMS FOR PERSONAL OR BODILY INJURY OR DEATH OR PROPERTY DAMAGE
            OCCURRING UPON, IN OR ABOUT THE PREMISES AS THE RESULT OF THE
            NEGLIGENCE OF LANDLORD OR THE PROPERTY MANAGER, whether or not
            required by the other provisions of this Lease.

        (b) Fire and Extended Coverage Insurance. Property insurance on an
            all-risk extended coverage basis (including coverage against fire,
            wind, tornado, vandalism, malicious mischief, water damage and
            sprinkler leakage) covering all fixtures, equipment and personalty
            located in the Premises and endorsed to provide one hundred percent
            (100%) replacement cost coverage. Such policy will be written in the
            names of Tenant, Landlord and any other parties reasonably
            designated by Landlord from time to time, as their respective
            interests may appear. The property insurance may, with the consent
            of the Landlord, provide for a reasonable deductible.

        (c) Workers Compensation and Employer's Liability Insurance. To the
            extent required by applicable law, Worker's compensation insurance
            insuring against and satisfying Tenant's obligations and liabilities
            under the worker's compensation laws of the State of Texas, together
            with employer's liability insurance in an amount not less than $
            1,000,000.00. The insurance required by this part (c) shall include
            provisions waiving all subrogation rights against Landlord.

 7.202  Other Requirements of Insurance. All such insurance will be issued and
        underwritten by companies reasonably acceptable to Landlord and will
        contain endorsements that (a) such insurance may not lapse with respect
        to Landlord or Property Manager or be canceled or amended with respect
        to Landlord or Property Manager without the insurance company giving
        Landlord and Property Manager at least thirty (30) days prior written
        notice of such cancellation or amendment, (b) Tenant will be solely
        responsible for payment of premiums, (c) in the event of payment of any
        loss covered by such policy, Landlord or Landlord's designees will be
        paid first by the insurance company for Landlord's loss and (d) Tenant's
        insurance is primary in the event of overlapping coverage which may be
        carried by Landlord.

 7.203  Proof of Insurance. Tenant shall deliver to Landlord within ten (10)
        days prior to the COMMENCEMENT OF CONSTRUCTION of Tenants Improvements,
        duplicate originals of all policies of insurance required by this
        Section 7.2 or duly executed originals of the evidence of such insurance
        (on ACORD Form 27 or a similar form) evidencing in-force coverage,
        stating that Landlord is an additional insured thereunder and agreeing
        to give Landlord at least thirty (30) days written notice prior to
        termination, cancellation or modification adversely affecting Landlord.
        Further, Tenant shall deliver to Landlord renewals thereof at least ten
        (10) days prior to the expiration of the respective policy terms.

SECTION 7.3 LANDLORD'S INSURANCE.

 7.301  Types of Coverage. Landlord covenants and agrees that throughout the
        Term of this Lease, Landlord will carry and maintain, at its sole cost
        and expense, the insurance set forth in paragraphs (a) and (b) of this
        subsection.

        (a) Commercial General Liability Insurance. Commercial General Liability
            Insurance covering the Building and all Common Areas, but excluding
            the Premises, insuring against claims for personal or BODILY INJURY
            OR DEATH OR PROPERTY damage occurring upon, in or about the Building
            or Common Areas to afford protection to the limit of not less than

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<PAGE>   14

            $2,000,000.00 combined single limit in respect to injury or death to
            any number of persons and property damage arising out of any one (1)
            occurrence. This insurance coverage shall extend to any liability of
            Landlord arising out of the indemnities provided for in this Lease.

        (b) Fire and Extended Coverage Insurance. Landlord shall at all times
            during the term hereof maintain in effect a policy or policies of
            all risk extended coverage insurance covering the Building
            (excluding property required to be insured by Tenant) endorsed to
            provide full replacement cost coverage and providing protection
            against perils included within the standard Texas form of fire and
            extended coverage insurance policy, together with insurance against
            sprinkler damage, vandalism, malicious mischief and such other risks
            as Landlord may from time to time determine and with any such
            deductibles as Landlord may from time to time determine.

 7.302  Self Insurance. Any insurance provided for in subsection 7.301 above may
        be effected by a policy or policies of blanket insurance covering
        additional items or locations or assureds, provided that the
        requirements of this Section 7.3 are otherwise satisfied. Tenant shall
        have no rights in any policy or policies maintained by Landlord,

SECTION 7.4 WAIVER OF SUBROGATION. Landlord and Tenant each hereby waives any
        rights it may have against the other (including, but not limited to, a
        direct action for damages) on account of any loss or damage occasioned
        to Landlord or Tenant, as the case may be (EVEN IF (i) SUCH LOSS OR
        DAMAGE IS CAUSED BY THE FAULT, NEGLIGENCE OR OTHER TORTIOUS CONDUCT,
        ACTS OR OMISSIONS OF THE RELEASED PARTY OR THE RELEASED PARTY'S
        DIRECTORS, EMPLOYEES, AGENTS OR INVITEES, OR (ii) THE RELEASED PARTY IS
        STRICTLY LIABLE FOR SUCH LOSS OR DAMAGE), TO THEIR RESPECTIVE PROPERTY,
        THE PREMISES, ITS CONTENTS OR TO ANY OTHER PORTION OF THE BUILDING OR
        THE PROPERTY ARISING FROM ANY RISK (WITHOUT REGARD TO THE AMOUNT OF
        COVERAGE OR THE AMOUNT OF DEDUCTIBLE) COVERED BY THE ALL RISK FULL
        REPLACEMENT COST PROPERTY INSURANCE REQUIRED TO BE CARRIED BY TENANT AND
        LANDLORD, RESPECTIVELY, UNDER SUBSECTIONS 7.201 (b) AND 7.301 (b) ABOVE.
        The foregoing waiver shall be effective even if either or both parties
        fail to carry the insurance required by sections 7.201(b) and 7.301(b)
        above. If a party waiving rights under this Section is carrying an all
        risk full replacement cost insurance policy in the promulgated form used
        in the State of Texas and an amendment to such promulgated form is
        passed, such amendment shall be deemed not a part of such promulgated
        form until it applies to the policy being carried by the waiving party.
        Without in any way limiting the foregoing waivers and to the extent
        permitted by applicable law, the parties hereto each, on behalf of their
        respective insurance companies insuring the property of either Landlord
        or Tenant against any such loss, waive any right of subrogation that
        Landlord or Tenant or their respective insurers may have against the
        other party or their respective officers, directors, employees, agents
        or invitees and all rights of their respective insurance companies based
        upon an assignment from its insured. Each party to this Lease agrees
        immediately to give to each such insurance company written notification
        of the terms of the MUTUAL WAIVERS CONTAINED IN THIS Section and to have
        said insurance policies properly endorsed, if necessary, to prevent the
        invalidation of said insurance coverage by reason of said waivers. The
        foregoing waiver shall be effective whether or not the parties maintain
        the required insurance.

SECTION 7.5 INDEMNITY.

 7.501  Tenant's Indemnity. Subject to the limitation and exclusions set forth
        below in this subsection, Tenant will indemnify and hold harmless
        Landlord, Property Manager, their respective officers, directors, and
        employees and any other parties for whom Landlord and/or Property
        Manager are responsible (each a "Landlord Indemnified Party") from, and
        shall reimburse each Landlord Indemnified Party for and with respect to,
        any and all costs, expenses (including, without limitation, reasonable
        attorneys' fees), claims, demands, actions, proceedings, judgments,
        hearings, damages, losses and liabilities brought or asserted by or
        payable to any third party, on account of personal injury, death,
        property damage or any other form of injury or damage (each a "Claim"
        and collectively, the "Claims") arising out of or relating to (A) an
        incident or event which occurred within or on the Premises, (B) any
        breach of this Lease by Tenant and which resulted in a Claim, EVEN IF
        THE CLAIM IS THE RESULT OF OR CAUSED BY THE NEGLIGENT ACTS OR OMISSIONS
        OF ANY LANDLORD INDEMNIFIED PARTY OR THE LANDLORD INDEMNIFIED PARTY IS
        STRICTLY LIABLE FOR SUCH CLAIM. The indemnification and reimbursement
        obligations of Tenant under this subsection (i) shall be limited to the
        greater of the amount of Commercial General Liability Insurance required
        to be carried by such party under this Lease or $5,000,000 and (ii)
        shall not apply to a Claim (a) waived by Landlord under Section 7.4
        above or any other provision of this Lease, (b) related to hazardous or
        toxic materials and caused by an act or omission that does not
        constitute a breach by Tenant of the provisions of subsection 4.102
        above, (c) arising out of the gross negligence or intentional misconduct
        of the Landlord Indemnified Party or (d) resulting from host liquor
        liability. If a third party files a lawsuit or brings any other legal
        action asserting a Claim against a Landlord Indemnified Party and that
        is covered by Tenant's indemnity, then Tenant, upon notice from the
        Landlord Indemnified Party, shall resist and defend such Claim through
        counsel reasonably satisfactory to the Landlord Indemnified Party.
        Tenant's obligations under this subsection shall survive the termination
        of this Lease.

 7.502  Landlord's Indemnity. Subject to the limitation and exclusions set forth
        below in this subsection, Landlord will indemnify and hold harmless
        Tenant and its officers, directors, and employees and any other parties
        for whom Tenant is responsible (each a "Tenant Indemnified Party") from,
        and shall reimburse each Tenant Indemnified Party for and with respect
        to, any and all Claims (as defined in subsection 7.501 preceding)
        arising out of or relating to (a) an incident or event which occurred
        within or on the Common Areas, or (b) any breach of this Lease by
        Landlord and which resulted in a Claim, EVEN IF THE CLAIM IS THE RESULT
        OF OR CAUSED BY THE NEGLIGENT ACTS OR OMISSIONS OF ANY TENANT
        INDEMNIFIED PARTY OR THE TENANT INDEMNIFIED PARTY IS STRICTLY LIABLE FOR
        SUCH CLAIM. The indemnification and reimbursement obligations of
        Landlord under this subsection (i) shall be limited to the greater of
        the amount of Commercial General Liability Insurance required to be
        carried by such party under this Lease or $5,000,000 and (ii) shall not
        apply to a Claim (a) waived by Tenant under Section 7.4 above or any
        other provision of this Lease, (b) related to hazardous or toxic
        materials and caused by an act or omission that does not constitute a
        breach by Landlord of the provisions of subsection 4.102

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<PAGE>   15

        above; (c) arising out of the gross negligence or intentional misconduct
        of the Tenant Indemnified Party or (d) resulting from host liquor
        liability. If a third party files a lawsuit or brings any other legal
        action asserting a Claim against a Tenant Indemnified Party and that is
        covered by Landlord's indemnity, then Landlord, upon notice from the
        Tenant Indemnified Party, shall resist and defend such Claim through
        counsel reasonably satisfactory to the Tenant Indemnified Party.
        Landlord's obligations under this subsection shall survive the
        termination of this Lease.

                                    ARTICLE 8
                                  CONDEMNATION

SECTION 8.1 CONDEMNATION RESULTING IN CONTINUED USE NOT FEASIBLE. If the
        Property or any portion thereof that, in Landlord's reasonable opinion,
        is necessary to the continued efficient and/or economically feasible use
        of the Property shall be taken or condemned in whole or in part for
        public purposes, or sold to a condemning authority in lieu of taking,
        then the term of this Lease shall, at the option of Landlord, forthwith
        cease and terminate.

SECTION 8.2 TOTAL CONDEMNATION OF PREMISES. In the event that any portion of the
        Property is taken or condemned or sold in lieu thereof and such taking
        or condemnation prevents Tenant from conducting its business in the
        Premises in a manner reasonably comparable to that conducted immediately
        before such taking or condemnation (including a significant reduction in
        the parking spaces available) or Tenant will be unable to use a
        substantial portion of the Premises for a period of one hundred eighty
        (180) consecutive days by reason of a temporary taking, either Landlord
        or Tenant may terminate this Lease by delivering written notice thereof
        to Landlord within ten (10) business days after the taking, condemnation
        or sale in lieu thereof.

SECTION 8.3 CONDEMNATION WITHOUT TERMINATION. If a taking or condemnation or
        sale in lieu of the taking of all or less than all of the Property does
        not give Landlord or Tenant the right to terminate, or gives either
        LANDLORD or Tenant the right to terminate this Lease pursuant to Section
        8.1 or 8.2 above and neither Landlord NOR TENANT ELECT TO exercise such
        termination right, then this Lease shall continue in full force and
        effect, provided that, if the taking, condemnation or sale includes any
        portion of the Premises, the Basic Annual Rent and Additional Rent shall
        be redetermined on the basis of the remaining square feet of Agreed
        Rentable Area of the Premises or if the taking or condemnation includes
        other portions of the Building or Land, the Basic Annual Rent and
        Additional Rent shall be adjusted on such equitable basis as is
        reasonable under the circumstances. Landlord, at Landlord's sole option
        and expense, shall restore and reconstruct the Building to substantially
        its former condition to the extent that the same may be reasonably
        feasible, but such work shall not be required to exceed the scope of the
        work done by Landlord in originally constructing the Building, nor shall
        Landlord in any event be required to spend for such work an amount in
        excess of the amount received by Landlord as compensation or damages
        (over and above amounts going to the mortgagee of the property taken)
        for the part of the Building or the Premises so taken.

SECTION 8.4 CONDEMNATION PROCEEDS. Landlord shall receive the entire award
        (which shall include sales proceeds) payable as a result of a
        condemnation, taking or sale in lieu thereof. Tenant hereby expressly
        assigns to Landlord any and all right title and interest of Tenant now
        or hereafter arising in and to any such award. Tenant shall, however,
        have the right to recover from such authority through a separate award
        which does not reduce Landlord's award, any compensation as may be
        awarded to Tenant on account of moving and relocation expenses and,
        depreciation to and removal of Tenant's physical property and the loss
        of Tenant's use of the Premises.

                                    ARTICLE 9
                                      LIENS

        Tenant shall keep the Premises and the Property free from all liens
        arising out of any work performed, materials furnished or obligations
        incurred by or for Tenant AND TENANT SHALL INDEMNIFY AND HOLD HARMLESS
        LANDLORD FROM AND AGAINST, AND REIMBURSE LANDLORD FOR AND WITH RESPECT
        TO, ANY AND ALL CLAIMS, CAUSES OF ACTION, DAMAGES, EXPENSES (INCLUDING
        REASONABLE ATTORNEYS' FEES), ARISING FROM OR IN CONNECTION WITH ANY SUCH
        LIENS. In the event that Tenant shall not, within thirty (30) days
        following notification to Tenant of the imposition of any such lien,
        cause the same to be released of record by payment or the posting of a
        bond in amount, form and substance acceptable to Landlord, Landlord
        shall have, in addition to all other remedies provided herein and by
        law, the right but not the obligation, to cause the same to be released
        by such means as it shall deem proper, including payment of or defense
        against the claim giving rise to such lien. All amounts paid or incurred
        by Landlord in connection therewith shall be paid by Tenant to Landlord
        on demand and shall bear interest from the date of demand until paid at
        the rate set forth in Section 15. 10 below. Nothing in this Lease shall
        be deemed or construed in any way as constituting the consent or request
        of Landlord, express or implied, by inference or otherwise, to any
        contractor, subcontractor, laborer or materialman for the performance of
        any labor or the furnishing of any materials for any specific
        IMPROVEMENT, ALTERATION OR REPAIR of or to the Building or the Premises
        or any part thereof, nor as giving Tenant any right, power or authority
        to CONTRACT FOR OR permit the rendering of any services or the
        furnishing of any materials that would give rise to the filing of any
        mechanic's or other liens against the interest of Landlord in the
        Property or the Premises.

                                   ARTICLE 10
                           TAXES ON TENANT'S PROPERTY

        Tenant shall be liable for and shall pay, prior to their becoming
        delinquent, any and all taxes and assessments levied against, and any
        increases in Real Estate Taxes as a result of, any personal property or
        trade or other fixtures placed by Tenant in or about the Premises and
        any improvements (other than Tenant's Improvements) constructed in the
        Premises by or on behalf of Tenant. In the event Landlord pays any such
        additional taxes or increases, Tenant will, within ten (10) days after
        demand, reimburse Landlord for the amount thereof.

                                       13

<PAGE>   16

                                   ARTICLE I I
                            SUBLETTING AND ASSIGNING

SECTION 11.1 SUBLEASE AND ASSIGNMENT. Except as provided below and as provided
        in Rider 2 to the Lease, Tenant shall not assign this Lease, or allow it
        to be assigned, in whole or in part, by operation of law or otherwise
        (it being agreed that for purposes of this Lease, assignment shall
        include, without limitation, the transfer of a majority interest of
        stock, PARTNERSHIP or other forms of ownership interests, merger or
        dissolution) or mortgage or pledge the same, or sublet the Premises or
        any part thereof or permit the Premises to be occupied by any firm,
        person, partnership or corporation or any combination thereof, other
        than Tenant, without the prior written consent of Landlord. In no event
        shall any assignment or sublease ever release Tenant from any obligation
        or liability hereunder. Without limiting Landlord's consent rights and
        as a condition to obtaining Landlord's consent, (i) each assignee must
        assume all obligations under this Lease and (ii) each sublessee must
        confirm that its sublease is subject and subordinate to this Lease. In
        addition, each assignee and sublessee shall agree to cause the Premises
        to comply at all times with all requirements of the Disability Acts (as
        amended), including, but not limited to, obligations arising out of or
        associated with such assignee's or subtenant's use of or activities or
        business operations conducted within the Premises to the extent Tenant
        would be required to so comply under this Lease. No assignee or
        sublessee of the Premises or any portion thereof may assign or sublet
        the Premises or any portion thereof. Consent by Landlord to one or more
        assignments or sublettings shall not operate as a waiver of Landlord's
        rights as to any subsequent assignments and/or sublettings. Tenant shall
        deliver to Landlord a copy of each assignment or sublease entered into
        by Tenant promptly after the execution thereof, whether or not
        Landlord's consent is required in connection therewith. Any assignment
        made by Tenant shall be in RECORDABLE FORM AND SHALL CONTAIN A covenant
        of assumption by the assignee running to Landlord. All reasonable legal
        fees and expenses INCURRED BY LANDLORD IN CONNECTION with any assignment
        or sublease proposed by Tenant will be the responsibility of Tenant and
        will be paid by Tenant within five (5) days of receipt of an invoice
        from Landlord. In addition, Tenant will pay to Landlord an
        administrative overhead fee of $500.00 in consideration for Landlord's
        review of any requested assignment or sublease.

SECTION 11.2 LANDLORD'S RIGHTS.

11.201  Landlord's Termination and Consent Rights.

        (a) If, at any time during the term of this Lease, Tenant determines
            that it desires to sublease more than fifty percent (50%) of the
            then existing Premises (other than to an Affiliate (as defined in
            Rider 2 to the Lease)) for a term equal to or greater than
            seventy-five percent (75%) of the remaining Term if one (1) or more
            years remains in the term of this Lease or for the remaining Term if
            less than one (1) year remains in the term of this Lease, Tenant
            may, prior to commencing any marketing efforts to locate a suitable
            subtenant, deliver notice to Landlord, specifying the portion of the
            Premises that Tenant desires to sublease (the "Proposed Sublease
            Space"), and the proposed effective date of such sublease ("Tenant's
            Preliminary Transfer Notice"). Landlord shall have a period of
            fifteen (15) business days following receipt of Tenant's Preliminary
            Transfer Notice (the "Exercise Period") in which to notify Tenant
            that it will terminate this Lease with respect to the Proposed
            Sublease Space pursuant to subsection 11. 20 1 (c) below or that it
            will not terminate this Lease with respect to the Proposed Sublease
            Space. If Landlord fails to notify Tenant of its election within the
            Exercise Period, Landlord shall be deemed to have elected not to
            terminate with Lease with respect to the Proposed Sublease Space,
            and Tenant shall be free to commence its marketing efforts in
            respect of the Proposed Sublease Space; provided that if Tenant has
            not executed a sublease agreement covering the Proposed Sublease
            Space within the one hundred fifty (150) day period following the
            expiration of the Exercise Period, Landlord's election not to
            terminate this Lease shall expire and Landlord shall be entitled,
            within twenty (20) business days following delivery of a second
            Preliminary Transfer Notice to exercise its recapture rights as
            provided above. The above procedure shall continue in the event that
            Tenant does not execute a sublease agreement covering the Proposed
            Sublease Space within any one hundred fifty (150) day period
            following the expiration of any Exercise Period, Landlord's election
            not to terminate this Lease shall expire and Landlord shall be
            entitled, within twenty (20) business days following delivery of
            another Preliminary Transfer Notice to exercise its recapture rights
            as provided above. The above PROCEDURE SHALL CONTINUE in the event
            that Tenant does not execute a sublease agreement covering the
            Proposed Sublease Space within any one hundred fifty (150) day
            period following the expiration of any Exercise Period.

        (b) If Tenant desires to sublease any portion of the Premises to any
            party other than as provided in Rider 2 or assign this Lease to any
            party other than an Affiliate, Tenant shall submit to Landlord (a)
            in writing the name of the proposed subtenant or assignee, the
            nature of the proposed subtenant's or assignee's business and, in
            the event of a sublease, the portion of the Premises which Tenant
            desires to sublease (if the proposed sublease space is less than all
            of the Premises, such portion is herein referred to as the "Proposed
            Sublease Space"), (b) a current balance sheet and income statement
            for such proposed subtenant or assignee, (c) a copy of the proposed
            form of sublease or assignment, and (d) such other information as
            Landlord may reasonably request (collectively, the "Required
            Information").

        (c) Landlord shall, within fifteen (15) days after Landlord's receipt of
            the Required Information deliver to Tenant a written notice (each
            such notice, a "Landlord Response") in which Landlord either (i)
            TERMINATES THIS LEASE, if Tenant desires to sublease all of the
            Premises or assign this Lease, unless Landlord has waived such right
            pursuant to subsection 11.20 1 (a) above, (ii) terminates this Lease
            only as to the Proposed Sublease Space, if the Proposed Sublease
            Space is less than the entire Premises, unless Landlord has waived
            such right pursuant to subsection 11.201(a) above, (iii) consents to
            the proposed sublease or assignment, or (iv) withholds its consent
            to the proposed sublease or assignment, which consent shall not be
            unreasonably withheld so long as Landlord does not elect to
            terminate this Lease under subparts (i) or (ii) above and so long as
            Landlord has received all Required Information. Notwithstanding the
            foregoing, Landlord shall not have the right to terminate this Lease
            with respect to any Proposed Sublease Space if the Agreed Rentable
            Area of such space, together with the Agreed Rentable Area of all
            other portions of the Premises then subject to a sublease, is less
            than fifty percent (50%) of the Agreed Rentable Area of the
            Premises. Landlord shall be deemed to have reasonably withheld its
            consent to any sublease or assignment if the refusal is based on (i)
            Landlord's determination (in its commercially reasonable discretion)
            that such subtenant or assignee is not of the character or quality
            of a tenant to whom Landlord would GENERALLY LEASE SPACE OF THE
            BUILDING, (II) THE fact that such sublease or assignment is not in
            form and of substance reasonably satisfactory to Landlord, (iii)
            such sublease or

                                       14

<PAGE>   17

            assignment conflicts in any material manner with this Lease,
            including, but not limited to, the Permitted Use under Item 10 of
            the Basic Lease Provisions or Section 4.1 of the Supplemental Lease
            Provisions, (iv) the proposed subtenant or assignee is a
            governmental entity or a medical office, (v) the proposed
            subtenant's or assignee's primary business is prohibited by any
            non-compete clause then affecting the Building, (vi) the proposed
            subtenant or assignee is a tenant of the Building or Landlord is
            negotiating with the proposed subtenant or assignee to become a
            tenant of the Building, (vii) the character of the business to be
            conducted within the Premises by the proposed subtenant or assignee
            is likely to substantially increase the expenses or costs or
            providing Building services, or the burden on parking, existing
            janitorial services or elevators in the Building, (viii) the
            sublease or assignment would cause Landlord to breach any recorded
            covenants or contractual obligations to which the Property or
            Landlord is subject or (ix) such sublessee or assignee has a net
            worth reasonably unsatisfactory to Landlord at the time Tenant
            submits the Required Information.

        (d) If Landlord does not timely exercise its termination right with
            respect to the proposed sublease or assignment within the required
            fifteen (15) days period, then Landlord shall be deemed to have
            waived its right, if any, to terminate this Lease with respect to
            the applicable assignment or sublease, but Landlord shall have the
            right to consent or withhold its consent to the applicable proposed
            assignment or sublease, by delivering written notice thereof to
            Tenant WITHIN SUCH FIFTEEN (15) DAY PERIOD. If Landlord does not
            exercise its right to consent or withhold its consent in respect of
            a proposed assignment or sublease within the required fifteen (15)
            day period, then Landlord shall be deemed to have consented to the
            proposed assignment or sublease.

11.202  Effect of Termination. If Landlord timely exercises its option to
        terminate this Lease as to the entire Premises as provided in subsection
        11.201, then this Lease shall terminate on a date specified by Landlord
        in the Landlord Response (the "Specified Termination Date"), which
        Specified Termination Date shall not be sooner than 30 days after the
        date of Landlord's Response, nor later than 90 days after the date of
        Landlord's Response, and the Basic Rent and Additional Rent shall be
        paid and apportioned to the Specified Termination Date. If Landlord
        timely exercises its option to terminate this Lease as to only the
        Proposed Sublease Space, then (i) this Lease shall end and expire with
        respect to the Proposed Sublease Space on the applicable Specified
        Termination Date, (ii) from and after the applicable Specified
        Termination Date, the Basic Rent shall be reduced by the amount of Basic
        Rent that was being paid in respect of the Proposed Sublease Space as of
        the applicable Specified Termination Date, (iii) Tenant's Pro Rata Share
        Percentage shall be recalculated based on the square feet of rentable
        area included in the Premises (exclusive of such Proposed Sublease
        Space), (iv) Tenant's estimated payments of Additional Rent shall be
        recalculated on the basis of the revised Tenant's Pro Rata Share
        Percentage, and (v) if the Proposed Sublease Space adjoins another
        portion of the Premises, Tenant shall, at Tenant's sole cost and
        expense, construct and finish such demising walls as are necessary to
        physically separate the Premises from the Proposed Sublease Space, and
        (vi) if the Proposed Sublease Space is part of a floor which is fully
        included in the Premises, then Landlord shall have the right, at Tenant!
        s sole cost and expense, (a) to construct and finish in accordance with
        Building standards or to cause Tenant to construct and finish in
        accordance with Building standards such demising walls as are necessary
        (x) to construct a public corridor so as to convert the floor to a
        multi-tenant floor and (y) to convert the restrooms on such floor
        (including access thereto) to restrooms, which will serve the entire
        floor, as opposed to only the Premises, and (b) to make such revisions,
        if any, are necessary, to properly light, heat, cool and ventilate the
        public corridor and public restrooms. The alterations performed by
        Tenant pursuant to this paragraph shall be deemed Installations and
        therefore subject to the provisions of subsection 6.303.

SECTION 11.3 LANDLORD'S RIGHTS RELATING TO ASSIGNEE OR SUBTENANT. To the extent
        the rentals or income derived from any sublease or assignment exceed the
        rentals due hereunder, one-half ('/2) of such excess rentals, after
        deducting Tenant's costs of entering into the sublease or assignment,
        (the "Excess Sublease Rentals") shall be the property of and paid over
        to Landlord in consideration for Landlord's consent to the applicable
        assignment or sublease. Landlord may at its option collect directly from
        such assignee or sublessee all rents becoming due to Tenant under such
        assignment or sublease Tenant hereby authorizes and directs any such
        assignee or sublessee to make such payments of rent direct to Landlord
        upon receipt of notice from Landlord and Tenant agrees that any such
        payments made by an assignee or sublessee to Landlord shall, to the
        extent of the payments so made, be a full and complete release and
        discharge of rent owed to Tenant by such assignee or sublessee. No
        direct collection by Landlord from any such assignee or sublessee shall
        be construed to constitute a novation or a release of Tenant or any
        guarantor of Tenant from the further performance of its obligations
        hereunder. Receipt by Landlord of rent from any assignee, sublessee or
        occupant of the Premises or any part thereof shall not be deemed a
        waiver of the above covenant in this Lease against assignment and
        subletting or a release of Tenant under this Lease. IN THE EVENT THAT,
        FOLLOWING AN ASSIGNMENT or subletting, this Lease or Tenant's right to
        possession of the Premises is TERMINATED BY LANDLORD FOR ANY REASON,
        INCLUDING WITHOUT limitation in connection with default by or bankruptcy
        of Tenant (which, for the purposes of this Section 11.2, shall include
        all persons or entities claiming by or through Tenant), Landlord may, at
        its SOLE OPTION, CONSIDER THIS LEASE TO BE THEREAFTER a direct lease to
        the assignee or subtenant of Tenant upon the terms and conditions
        contained in this Lease, in which event all rentals payable under such
        lease to which Landlord would otherwise be entitled after the
        termination of this Lease or Tenant's right to possession of the
        Premises shall be deemed the property of Landlord.

SECTION 11.4 ASSIGNMENT AND BANKRUPTCY.

11.401  Assignments after Bankruptcy. If, pursuant to applicable bankruptcy law
        (as hereinafter defined in Section 13.104), Tenant (or its successor in
        interest hereunder) is permitted to assign this Lease in disregard of
        the restrictions contained in this Article I I (or if this Lease shall
        be assumed by a trustee for such person), the trustee or assignee shall
        cure any default under this Lease and shall provide adequate assurance
        of future performance by the trustee or assignee, including (i) THE
        SOURCE OF PAYMENT of Basic Annual Rent and performance of other
        obligations under this Lease (for which ADEQUATE ASSURANCE SHALL MEAN
        THE DEPOSIT of cash security with Landlord in an amount equal to the sum
        of one (1) YEAR'S BASIC ANNUAL RENT, ADDITIONAL RENT AND OTHER RENT THEN
        RESERVED HEREUNDER FOR THE CALENDAR YEAR PRECEDING the year in which
        such ASSIGNMENT IS INTENDED TO BECOME EFFECTIVE, which deposit shall be
        held by Landlord, without interest, for the balance of THE TERM AS
        SECURITY FOR THE FULL AND FAITHFUL performance of all of the obligations
        under this Lease on the part of Tenant yet to be PERFORMED AND THAT ANY
        SUCH ASSIGNEE of this Lease shall have a net worth exclusive of good
        will, computed in accordance with the generally accepted accounting
        principles, equal to at least ten (10) times the aggregate of the Basic
        Annual Rent RESERVED HEREUNDER); AND (II) THAT THE USE OF the Premises
        shall be in accordance with the requirements of Article 4 hereof and,
        FURTHER, SHALL IN NO WAY DIMINISH THE REPUTATION of the Building as a
        first-class office building or impose any additional BURDEN UPON THE
        Building or increase the

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<PAGE>   18

        services to be provided by Lan - lord. If all defaults are not cured and
        such adequate ssurance is not provided within sixty (60) days after
        there has been an order for relief under applicable bankruptcy law, then
        this Lease shall be deemed rejected, Tenant or any other person in
        possession shall immediately vacate the Premises, and Landlord shall be
        entitled to retain any Basic Annual Rent, Additional Rent and any other
        Rent, together with any security deposit previously received from the
        Tenant, and shall have no further liability to Tenant or any person
        claiming through Tenant or any trustee.

11.402  Bankruptcy of Assignee. If Tenant assigns this Lease to any party and
        such party or its successors or representatives causes termination or
        rejection of this Lease pursuant to applicable bankruptcy law, then,
        notwithstanding any such termination or rejection, Tenant (i) shall
        remain fully liable for the performance of all covenants, agreements,
        terms, provisions and conditions contained in this Lease, as though the
        assignment never occurred and (ii) shall, without in any way limiting
        the foregoing, in writing ratify the terms of this Lease, as same
        existed immediately prior to the termination or rejection.

                                   ARTICLE 12
                    TRANSFERS BY LANDLORD, SUBORDINATION AND
                          TENANT'S ESTOPPEL CERTIFICATE

SECTION 12.1 SALE OF THE PROPERTY. In the event of any transfer of title to the
        Building, the transferor shall automatically be relieved and freed of
        all obligations of Landlord under this Lease accruing after such
        transfer, provided that if a Security Deposit has been made by Tenant,
        Landlord shall not be released from liability with respect thereto
        unless Landlord transfers the Security Deposit to the transferee and the
        transferee assumes in writing the obligations of the Landlord with
        respect to the Security Deposit.

SECTION 12.2 SUBORDINATION, ATTORNMENT AND NOTICE. This Lease is subject and
        subordinate to (i) any lease wherein Landlord is the tenant and to the
        liens of any and all mortgages and deeds of trust, regardless of whether
        such lease, mortgage or deed of trust now exists or may hereafter be
        created with regard to all or any part of the Property, (ii) any and all
        advances (including interest thereon) to be made under any such lease,
        mortgage or deed of trust and (iii) all modifications, consolidations,
        renewals, replacements and extensions of any such lease, mortgage or
        deed of trust; provided that the foregoing subordination in respect of
        any mortgage or deed of trust placed on the Property after the date
        hereof shall not become effective until and unless the holder of such
        mortgage or deed of trust delivers to Tenant a commercially reasonable
        non-disturbance agreement (which may include Tenant's agreement to
        attorn as set forth below) permitting Tenant, if Tenant is not then in
        default under, or in breach of any provision of, this Lease, to remain
        in occupancy of the Premises in the event of a foreclosure of any such
        mortgage or deed of trust. Tenant also agrees that any lessor, mortgagee
        or trustee may elect (which election shall be revocable) to have this
        Lease superior to any lease or lien of its mortgage or deed of trust
        and, in the event of such election and upon notification by such lessor,
        mortgagee or trustee to Tenant to that effect, this Lease shall be
        deemed superior to the said lease, mortgage or deed of trust, whether
        this Lease is dated prior to or subsequent to the date of said lease,
        mortgage or deed of trust. Tenant shall, in the event of the sale or
        assignment of Landlord's interest in the Premises (except in a
        sale-leaseback financing transaction), or in the event of the
        termination of any lease in a sale-leaseback financing transaction
        wherein Landlord is the lessee, attorn to and recognize such purchaser,
        assignee or mortgagee as Landlord under this Lease, provided that any
        purchaser or assignee assumes the obligations of Landlord under this
        Lease in writing, or any mortgagee provides Tenant with a nondisturbance
        agreement. Tenant shall, in the event of any proceedings brought for the
        foreclosure of, or in the event of the exercise of the power of sale
        under, any mortgage or deed of trust covering the Premises, attorn to
        and recognize purchaser at such sale, assignee or mortgagee, as the case
        may be, as Landlord under this Lease, PROVIDED THAT TENANT HAS received
        a nondisturbance agreement. 'Me above subordination and attornment
        clauses shall be self-operative and no further instruments of
        subordination or attornment need be required by any mortgagee, trustee,
        lessor, purchaser or assignee. In confirmation thereof, Tenant agrees
        that, upon the request of Landlord, or any such lessor, mortgagee,
        trustee, purchaser or assignee, Tenant shall execute and deliver
        whatever instruments may be reasonably required for such purposes and to
        carry out the intent of this Section 12.2.

SECTION 12.3 TENANT'S ESTOPPEL CERTIFICATE. Tenant shall, upon the reasonable
        request of Landlord or any mortgagee of Landlord, without additional
        consideration, deliver an estoppel certificate, consisting of reasonable
        statements required by Landlord, any mortgagee or purchaser of any
        interest in the Property, which statements may include but shall not be
        limited to the following: this Lease is in full force and effect with
        rent paid through a specified date; this Lease has not been modified or
        amended; Landlord is not in default and Landlord has fully performed all
        of Landlord's obligations hereunder; and such other statements as may
        reasonably be required by the requesting party. If Tenant is unable to
        make any of the statements contained in the estoppel certificate because
        the same is untrue, Tenant shall with specificity state the reason why
        such statement is untrue. Tenant shall, if requested by Landlord or any
        such mortgagee, deliver to Landlord a fully executed instrument in form
        reasonably satisfactory to Landlord evidencing the agreement of Tenant
        to the mortgage or other hypothecation by Landlord of the interest of
        Landlord hereunder.

                                   ARTICLE 13
                                     DEFAULT

SECTION 13.1 DEFAULTS BY TENANT. The occurrence of any of the events described
        in subsections 13. 101 through 13.108 shall constitute a default by
        Tenant under this Lease.

13.101  Failure to Pay Rent. With respect to the first two payments of Rent not
        made by Tenant WHEN DUE IN ANY TWELVE (12) MONTH period, the failure by
        Tenant to make either such payment to Landlord within three (3) business
        days after Tenant receives written notice specifying that the payment
        was not made when due. With respect to any other payment of Rent, the
        failure by Tenant to make such payment of Rent to Landlord when due, no
        notice of any such failure being required.

13.102  Failure to Perform. Except for a failure covered by subsection 13. 101
        above or 13.103 below, any failure by Tenant to observe and perform any
        provision of this Lease to be observed or performed by Tenant where such
        failure continues for thirty (30) days after written notice to Tenant,
        provided that if such failure cannot be cured within said fifteen (15)
        day period, Tenant shall not

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<PAGE>   19

        be in default hereunder so long as Tenant commences curative action
        within such fifteen (15) day period, diligently and continuously pursues
        the curative action and fully and completely cures the failure within
        sixty (60) days after such written notice to Tenant.

13.103  Continual Failure to Perform. The third failure by Tenant in any twelve
        (12) month period to perform and observe a particular provision of this
        Lease to be observed or performed by Tenant (other than the failure to
        pay Rent, which in all instances will be covered by subsection 13. 101
        above), no notice being required for any such third failure.

13.104  Bankruptcy, Insolvency, Etc. Tenant or any guarantor of Tenant's
        obligations hereunder (hereinafter called "Guarantor", whether one (1)
        or more), (i) declared insolvent according to any law, (ii) makes a
        transfer in fraud of creditors according to any applicable law, (iii)
        assigns or conveys all or a substantial portion of its property for the
        benefit of creditors, or (iv) Tenant or Guarantor files a petition for
        relief under the Federal Bankruptcy Code or any other present or future
        federal or state insolvency, bankruptcy or similar law (collectively,
        "applicable bankruptcy law"); a receiver or trustee is appointed for
        Tenant or Guarantor or its property; the interest of Tenant or Guarantor
        under this Lease is levied on under execution or under other legal
        process; any involuntary petition is filed against Tenant or Guarantor
        under applicable bankruptcy law; or any action is taken in bankruptcy to
        reorganize or modify Tenant's or Guarantor's capital structure if either
        Tenant or Guarantor be a corporation or other entity (provided that no
        such levy, execution, legal process or petition filed against Tenant or
        Guarantor shall constitute a breach of this Lease if Tenant or Guarantor
        shall vigorously contest the same by appropriate proceedings and shall
        remove or vacate the same within ninety (90) days from the date of its
        creation, service or filing).

13.105  Intentionally Omitted.

13.106  Intentionally Omitted.

13.107  Loss of Right to do Business. If Tenant is a corporation or limited
        partnership, Tenant fails to maintain its right to do business in the
        State of Texas or fails to pay any applicable annual franchise taxes as
        and when same become finally due and payable, and Tenant fails to cure
        within thirty (30) days following notice of such failure.

13.108  Dissolution or Liquidation. If Tenant is a corporation or partnership,
        Tenant dissolves or liquidates or otherwise fails to maintain its
        corporate or partnership structure, as applicable, and Tenant fails to
        cure within thirty (30) days following notice of such failure.

        With respect to the defaults described in subsections 13.103 through
        13.108, Landlord shall not be obligated to give Tenant notices of
        default and Tenant shall have no right to cure such defaults.

SECTION 13.2 REMEDIES OF LANDLORD.

13.201  Termination. of the Lease. Upon the occurrence of a default by Tenant
        hereunder, Landlord may, without judicial process, terminate this Lease
        by giving written notice thereof to Tenant (whereupon all obligations
        and liabilities of Landlord hereunder shall terminate) and, without
        further notice and without liability, repossess the Premises. Landlord
        shall be entitled to recover all loss and damage Landlord may suffer by
        reason of such termination, whether through inability to relet the
        Premises on satisfactory terms or otherwise, including without
        limitation, the following (without duplication of any element of
        damages):

        (a) accrued Rent to the date of termination and Late Charges, plus
            interest thereon at the rate established under Section 15. 10 below
            from the date due through the date paid or date of any judgment or
            award by any court of competent jurisdiction, the unamortized cost
            of Tenant's Improvements, brokers' fees and commissions, attorneys'
            fees, moving allowances and any other costs incurred by Landlord in
            connection with making or executing this Lease, the cost of
            recovering the Premises and the reasonable costs of reletting the
            Premises (including, without limitation, advertising costs,
            brokerage fees, leasing commissions, reasonable attorneys' fees and
            refurbishing costs and other costs in readying the Premises for a
            new tenant);

        (b) the present value of the Rent (discounted at a rate of interest
            equal to eight percent [8%] per annum [the "Discount Rate"]) that
            would have accrued under this Lease for the balance of the Lease
            term but for such termination, reduced by the reasonable fair market
            rental value of the Premises for such balance of the Lease term
            (determined from the present value of the actual base rents,
            discounted at the Discount Rate, received and to be received from
            Landlord's reletting of the Premises or, if the Premises are not
            relet, the base rents, discounted at the Discount Rate, that with
            reasonable efforts could be collected by Landlord by reletting the
            Premises, calculated in accordance with subsection 13.206);

        (c) plus any other costs or amounts reasonably necessary to compensate
            Landlord for its damages.

13.202  Repossession and Re-Entry. Upon the occurrence of a default by Tenant
        hereunder, LANDLORD MAY, WITHOUT JUDICIAL PROCESS, immediately terminate
        Tenant's right of possession of the Premises (whereupon all OBLIGATIONS
        AND LIABILITY OF LANDLORD hereunder shall terminate), but not terminate
        this Lease, and, without notice, demand or liability, enter upon the
        Premises or any part thereof, take absolute possession of the same,
        expel or remove Tenant and any OTHER PERSON OR ENTITY WHO MAY BE
        OCCUPYING the Premises and change the locks. If Landlord terminates
        Tenant's possession of THE PREMISES UNDER THIS SUBSECTION 13.202, (i)
        Landlord shall have no obligation whatsoever to tender to Tenant a key
        for new LOCKS INSTALLED IN THE PREMISES, (ii) Tenant shall have no
        further right to possession of the Premises and (iii) Landlord will HAVE
        THE RIGHT TO RELET THE PREMISES or any PART THEREOF on such TERMS AS
        LANDLORD DEEMS advisable, taking into account the FACTORS DESCRIBED IN
        SUBSECTION 13.206. Any rent received by Landlord from reletting the
        Premises or a part thereof shall be applied first, to the payment of any
        indebtedness other than Rent due hereunder from Tenant to Landlord (in
        such order as Landlord shall designate), second, to the payment of any
        cost of such reletting, including, without limitation, refurbishing
        costs, reasonable attorneys' fees, advertising costs, brokerage fees and
        leasing commissions and third, to the payment of Rent due and unpaid
        hereunder (in such order as Landlord shall designate), and Tenant shall
        satisfy and pay to Landlord any deficiency upon demand therefor from
        time to time. Landlord shall not be responsible or liable for any
        failure to relet the Premises or any PART THEREOF OR FOR ANY FAILURE to
        collect

                                       17

<PAGE>   20

        any rent due upon any such reletting No such re-entry or taking of
        possession of the Premises by Landlord shall be construed as an election
        on Landlord's part to terminate this Lease unless a written notice of
        such termination is given to Tenant pursuant to subsection 13.201 above.
        If Landlord relets the Premises, either before or after the termination
        of this Lease, all such rentals received from such lease shall be and
        remain the exclusive property of Landlord and Tenant shall not be, at
        any time, entitled to recover any such rental. Any rents received shall
        be credited against amounts owed by Tenant. Landlord may at any time
        after a reletting elect to terminate this Lease.

13.203  Cure of Default. Upon the occurrence of a default hereunder by Tenant,
        Landlord may, without judicial process and without having any liability
        therefor, enter upon the Premises and do whatever Tenant is obligated to
        do under the terms of this Lease and Tenant agrees to reimburse Landlord
        on demand for any expenses which Landlord may incur in effecting
        compliance with Tenant's obligations under this Lease, and Tenant
        further agrees that Landlord shall not be liable for any damages
        resulting to Tenant from such action, WHETHER CAUSED BY THE NEGLIGENCE
        OF LANDLORD OR OTHERWISE, UNLESS CAUSED BY LANDLORD'S GROSS NEGLIGENCE
        OR WILLFUL MISCONDUCT.

13.204  Continuing Obligations. No repossession of or re-entering upon the
        Premises or any part thereof pursuant to subsection 13.202 or 13.203
        above or otherwise and no reletting of the Premises or any part thereof
        pursuant to subsection 13.202 above shall relieve Tenant or any
        Guarantor of its liabilities and obligations hereunder, all of which
        shall survive such repossession or re-entering. In the event of any such
        repossession of or re-entering upon the Premises or any part thereof by
        reason of the occurrence of a default, Tenant will continue to pay to
        Landlord Rent required to be paid by Tenant.

13.205  Cumulative Remedies. No right or remedy herein conferred upon or
        reserved to Landlord is intended to be exclusive of any other right or
        remedy set forth herein or otherwise available to Landlord at law or in
        equity and each and every right and remedy shall be cumulative and in
        addition to any other right or remedy given hereunder or now or
        hereafter existing at law or in equity or by statute. In addition to the
        other remedies provided in this Lease and without limiting the preceding
        sentence, Landlord shall be entitled, to the extent permitted by
        applicable law, to injunctive relief in case of the violation, or
        attempted or threatened violation, of ANY of the covenants, agreements,
        conditions or provisions of this Lease, or to a decree compelling
        performance of any of the covenants, agreements, conditions or
        provisions of this Lease, or to any other remedy allowed to Landlord at
        law or in equity.

13.206  Mitigation of Damages. For purposes of determining any recovery of rent
        or damages by Landlord that depends upon what Landlord could collect by
        using reasonable efforts to relet the Premises, whether the
        determination is required under subsections 13.201 or 13.202 or
        otherwise, it is understood and agreed that:

        (a) Landlord may reasonably elect to lease other comparable, available
            space in the Building, if any, before reletting the Premises.


        (b) Landlord may reasonably decline to incur out-of-pocket costs to
            relet the Premises, other than customary leasing commissions and
            legal fees for the negotiation of a lease with a new tenant.

        (c) Landlord may reasonably decline to relet the Premises at rental
            rates below then prevailing market rental rates, because of the
            negative impact lower rental rates would have on the value of the
            Building and because of the uncertainty of actually receiving from
            Tenant the greater damages that Landlord would suffer from and after
            reletting at the lower rates.

        (d) Before reletting the Premises to a prospective tenant, Landlord may
            reasonably require the prospective tenant to demonstrate the same
            financial wherewithal that Landlord would require as a condition to
            leasing other space in the Building to the prospective tenant.

        (e) Identifying a prospective tenant to relet the Premises, negotiating
            a new lease with such tenant and making the Premises ready for such
            tenant will take time, depending upon market conditions when the
            Premises first become available for reletting, and during such time
            Landlord cannot reasonably be expected to collect any revenue from
            reletting.

        (f) Listing the Premises with a broker in a manner consistent with parts
            (a) through (e) above constitutes reasonable efforts on the part of
            Landlord to relet the Premises.

SECTION 13.3 DEFAULTS BY LANDLORD. Landlord shall be in default under this Lease
        if Landlord fails to perform any of its obligations hereunder and said
        failure continues for a period of fifteen (15) days after Tenant
        delivers written notice thereof to Landlord (to each of the addresses
        required by this Section) and each mortgagee who has a lien against any
        portion of the Property and whose name and address has been provided to
        Tenant, provided that if such FAILURE CANNOT REASONABLY BE CURED WITHIN
        said fifteen (15) day period, Landlord shall not be in default hereunder
        if the curative action is commenced within said fifteen (15) day period
        and is thereafter diligently pursued until cured. In no event shall (i)
        Tenant claim a constructive or actual eviction or that the Premises have
        become unsuitable hereunder or (ii) a constructive or actual eviction or
        breach of the implied warranty of suitability be deemed to have occurred
        under this Lease, prior to the expiration of THE NOTICE AND CURE PERIODS
        PROVIDED under this Section 13.3. Any notice of a failure to perform by
        Landlord shall be sent to Landlord at the addresses and to the attention
        of the parties set forth in the Basic Lease Provisions. Any notice of a
        failure to perform by Landlord not sent to Landlord at all addresses
        and/or to the attention of all parties required under this Section and
        to each mortgagee who is entitled to notice or not sent in compliance
        with Article 14 below shall be of no force or effect.

SECTION 13.4 LANDLORD'S LIABILITY.

13.401  Tenant's Rights in Respect of Landlord Default. Tenant is granted no
        contractual right of termination by this Lease, except to the extent and
        only to the extent set forth in Sections 7.1 and 8.2 above and Rider H-
        I attached hereto If Landlord is in default, Tenant's exclusive remedy
        shall bean action for damages. If Tenant shall recover a money judgment
        against Landlord, such

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<PAGE>   21

        judgment shall be satisfied only out of the right, title and interest of
        Landlord in the Property as the same may then be encumbered and Landlord
        shall not be liable for any deficiency. If Landlord is found to be in
        default hereunder by reason of its failure to give a consent that it is
        required to give hereunder, Tenant's sole remedy will be an action for
        specific performance or injunction. The foregoing sentence shall in no
        event be construed as mandatorily requiring Landlord to give consents
        under this Lease. In no event shall Landlord be liable to Tenant for
        consequential or special damages by reason of a failure to perform (or a
        default) by Landlord hereunder or otherwise. In no event shall Tenant
        have the right to levy execution against any property of Landlord other
        than its interest in the Property as hereinbefore expressly provided.

13.402  Certain Limitations on Landlord's Liability. UNLESS COVERED BY
        SUBSECTION 7.502 ABOVE OR CAUSED BY LANDLORD'S GROSS NEGLIGENCE OR
        WILLFUL MISCONDUCT AND WITHOUT LIMITING THE PROVISIONS OF SECTION 7.4,
        LANDLORD SHALL NOT BE LIABLE TO TENANT FOR ANY CLAIMS, ACTIONS, DEMANDS,
        COSTS, EXPENSES, DAMAGE OR LIABILITY OF ANY KIND (i) arising out of the
        use, occupancy or enjoyment of the Premises by Tenant or any person
        therein or holding under Tenant or by or through the acts or omissions
        of any of their respective employees, officers, agents, invitees or
        contractors, (ii) caused by or arising out of fire, explosion, falling
        sheetrock, gas, electricity, water, rain, snow or dampness, or leaks in
        any part of the Premises, (iii) caused by or arising out of damage to
        the roof, pipes, appliances or plumbing works or any damage to or
        malfunction of heating, ventilation or air conditioning equipment, or
        (iv) caused by tenants or any persons either in the Premises or
        elsewhere in the Building (other than Common Areas) or by occupants of
        property adjacent to the Building or Common Areas or by the public or by
        the construction of any private, public or quasi-public work. In no
        event shall Landlord be liable to Tenant for any loss of or damage to
        property of Tenant or of others located in the Premises, the Building or
        any other part of the Property by reason of theft or burglary.

SECTION 13.5 WAIVER OF TEXAS DECEPTIVE TRADE PRACTICES ACT

TENANT HEREBY WAIVES ALL ITS RIGHTS UNDER THE TEXAS DECEPTIVE TRADE PRACTICES
- - CONSUMER PROTECTION ACT, SECTION 17.41 ET. SEQ. OF THE TEXAS BUSINESS AND
COMMERCE CODE (THE "DTPA"), A LAW THAT GIVES CONSUMERS SPECIAL RIGHTS AND
PROTECTIONS. AFTER CONSULTATION WITH AN AT-FORNEY OF TENANT'S OWN SELECTION,
TENANT VOLUNTARILY CONSENTS TO THIS WAIVER.

SECTION 13.6 LANDLORD'S LIEN. Intentionally Omitted.

                                   ARTICLE 14
                                     NOTICES

        Any notice or communication required or permitted in this Lease shall be
        given in writing, sent by (a) personal delivery, with proof of delivery,
        (b) expedited delivery service, with proof of delivery, (c) United
        States mail, postage prepaid, registered or certified mail, return
        receipt requested or (d) prepaid telegram (provided that such telegram
        is confirmed by expedited delivery service or by mail in the manner
        previously described), addressed as provided in Item 13 of the Basic
        Lease Provisions and Section 13.3 above or to such other address or to
        the attention of such other person as shall be designated from time to
        time in writing by the applicable party and sent in accordance herewith.
        Notice also may be given by telex or fax, provided each such
        transmission is confirmed (and such confirmation is supported by
        documented evidence) as received and further provided a telex or fax
        number, as the case may be, is set forth in Item 13 of the Basic Lease
        Provisions. Any such notice or communication shall be deemed to have
        been given either at the time of personal delivery or, in the case of
        delivery service or mail, as of the date of first attempted delivery at
        the address and in the manner provided herein, or in the case of
        telegram or telex or fax, upon receipt.

                                   ARTICLE 15
                            MISCELLANEOUS PROVISIONS

SECTION 15.1 BUILDING NAME AND ADDRESS. Tenant shall not, without the written
        consent of Landlord, use the name of the Building for any purpose other
        than as the address of the business to be conducted by Tenant in the
        Premises and in no event shall Tenant acquire any rights in or to such
        names. Landlord shall have the right at any time to change the name,
        number or designation by which the Building is known, upon reasonable
        notice to Tenant.

SECTION 15.2 SIGNAGE. Except as provided below, Tenant shall not inscribe,
        paint, affix or display any signs, advertisements or notices on or in
        the Building, except for such tenant identification information as
        Landlord permits to be included or shown on the directory in the main
        lobby and adjacent to the access door or doors to the Premises. Landlord
        agrees that Tenant may, at Tenant's expense, maintain a sign over its
        reception desk (or at such other location visible from the elevator
        lobby of the Building) bearing Tenant's name (subject to Landlord's
        reasonable approval of the size, DESIGN, FORM, CONTENT AND LOCATION of
        such sign) on each floor of the Building on which any part of the Leased
        Premises are located. Tenant shall be solely responsible for all costs
        of designing, installing and repairing such signage, diligently
        construct such building signage to completion in a good and workmanlike
        manner and maintain such signage in an attractive condition, and comply
        with all governmental codes and regulations. Landlord shall, at
        Landlord's expense, maintain a Building directory, and shall furnish
        Tenant with space on the directory identifying Tenant.

SECTION 15.3 NO WAIVER. No waiver by Landlord or by Tenant of any provision of
        this Lease shall be deemed to be a waiver by either party of any other
        provision of this Lease. No waiver by Landlord of any breach by Tenant
        shall be deemed a waiver of any subsequent breach by Tenant of the same
        or any other provision. No waiver by Tenant of any breach by Landlord
        shall be deemed a waiver of any subsequent breach by Landlord of the
        same or any other provision. The failure of Landlord or Tenant to insist
        at any time upon the strict performance of any covenant or agreement or
        to exercise any option, right, power or remedy contained in this Lease
        shall not be construed as a waiver or a relinquishment THEREOF FOR THE
        FUTURE. Landlord's consent to or approval of any act by Tenant requiring
        Landlord's consent or approval shall not be deemed to render unnecessary
        the obtaining of Landlord's consent to or approval of any subsequent act
        of Tenant. Tenant s consent to or approval of any act by Landlord
        requiring Tenant's consent or approval shall not be deemed to render
        unnecessary the obtaining of Tenant's consent

                                       19

<PAGE>   22

        to or approval of any subsequent act of Landlord. No act or thing done
        by Landlord or Landlord's agents during the term of this Lease shall be
        deemed an acceptance of a surrender of the Premises, unless done in
        writing signed by Landlord. The delivery of the keys to any employee or
        agent of Landlord shall not operate as a termination of this Lease or a
        surrender of the Premises. The acceptance of any Rent by Landlord
        following a breach of this Lease by Tenant shall not constitute a waiver
        by Landlord of such breach or any other breach. The payment of Rent by
        Tenant following a breach of this Lease by Landlord shall not constitute
        a waiver by Tenant of any such breach or any other breach. No waiver by
        Landlord or Tenant of any provision of this Lease shall be deemed to
        have been made unless such waiver is expressly stated in writing signed
        by the waiving party. No payment by Tenant or receipt by Landlord of a
        lesser amount than the monthly installment of Rent due under this Lease
        shall be deemed to be other than on account of the earliest Rent due
        hereunder, nor shall any endorsement or statement on any check or any
        letter accompanying any check or payment as Rent be deemed an accord and
        satisfaction and Landlord may accept such check or payment without
        'prejudice to Landlord's right to recover the balance of such rent or
        pursue any other remedy which may be available to Landlord.

SECTION 15.4 APPLICABLE LAW. This Lease shall be governed by and construed in
        accordance with the laws of the State of Texas.

SECTION 15.5 COMMON AREAS. "Common Areas" will mean all areas, spaces,
        facilities and equipment (whether or not located within the Building)
        made available by Landlord for the common and joint use of Landlord,
        Tenant and others designated by Landlord using or occupying space in the
        Building, including but not limited to, tunnels, walkways, sidewalks and
        driveways necessary for access to the Building, Building lobbies,
        landscaped areas, public corridors, public rest rooms, Building stairs,
        elevators open to the public, service elevators (provided that such
        service elevators shall be available only for TENANTS OF the Building
        and others designated by Landlord), drinking fountains and any such
        other areas and facilities, if any, as are designated by Landlord from
        time to time as Common Areas. "Service Corridors" shall mean all loading
        docks, loading areas and all corridors that are not open to the public
        but which are available for use by Tenant and others designated by
        Landlord. "Service Areas" will refer to areas, spaces, facilities and
        equipment serving the Building (whether or not located within the
        Building) but to which Tenant and other occupants of the Building will
        not have access, including, but not limited to, mechanical, telephone,
        electrical and similar rooms and air and water refrigeration equipment.
        Tenant is hereby granted a nonexclusive right to use the Common Areas
        and Service Corridors during the term of this Lease for their intended
        purposes, in common with others designated by Landlord, subject to the
        terms and conditions of this Lease, including, without limitation, the
        Rules and Regulations. The Building, Common Areas, Service Corridors and
        Service Areas will be at all times under the exclusive control,
        management and operation of the Landlord. Tenant agrees and acknowledges
        that the Premises (whether consisting of less than one floor or
        consisting of one or more full floors within the Building) do not
        include, and Landlord hereby expressly reserves for its sole and
        exclusive use, any and all mechanical, electrical, telephone and similar
        rooms, janitor closets, elevator, pipe and other vertical shafts and
        ducts, flues, stairwells, any area above the acoustical ceiling and any
        other areas not specifically shown on Exhibit A as being part of the
        Premises.

SECTION 15.6 SUCCESSORS AND ASSIGNS. Subject to Article I I hereof, all of the
        covenants, conditions and provisions of this Lease shall be binding upon
        and shall inure to the benefit of the parties hereto and their
        respective heirs, personal representatives, successors and assigns.

SECTION 15.7 BROKERS. Tenant warrants that it has had no dealings with any real
        estate broker or agent in connection with the negotiation of this Lease,
        excepting only the broker named in Item 9 of the Basic Lease Provisions
        and that it knows of no other real estate brokers or agents who are or
        might be entitled to a commission in connection with this Lease. Tenant
        agrees to indemnify and hold harmless Landlord from and against any
        liability or claim, whether meritorious or not, arising in respect to
        brokers and/or agents not so named. Landlord has agreed to pay the fees
        of the broker (but only the broker) named in Item 9 of the Basic Lease
        Provisions to the extent that Landlord has agreed to do so pursuant to a
        written agreement with such broker.

SECTION 15.8 SEVERABILITY. If any provision of this Lease or the application
        thereof to any person or circumstances shall be invalid or unenforceable
        to any extent, the application of such provisions to other persons or
        circumstances and the remainder of this Lease shall not be affected
        thereby and shall be enforced to the greatest extent permitted by law.

SECTION 15.9 EXAMINATION OF LEASE. Submission by Landlord of this instrument to
        Tenant for examination or signature does not constitute a reservation of
        or option for lease. This Lease will be effective as a lease or
        otherwise only upon execution by and delivery to both Landlord and
        Tenant.

SECTION 15.10 INTEREST ON TENANT'S OBLIGATIONS. Any amount due from Tenant to
        Landlord which is not paid within thirty (30) days after the date due
        shall bear interest at the lower of (i) ten percent (10%) per annum or
        (ii) the highest rate from time to time allowed by applicable law, from
        the date such payment is due until paid, but the payment of such
        interest shall not excuse or cure the default.

SECTION 15.11 TIME. Time is of the essence in this Lease and in each and all of
        the provisions hereof. Whenever a period of days is specified in this
        Lease, such period shall refer to calendar days unless otherwise
        expressly stated in this Lease.

SECTION 15.12 DEFINED TERMS AND MARGINAL HEADINGS. The words "Landlord" and
        "Tenant" as used herein shall include the plural as well as singular. If
        more than one person is named as Tenant, the obligations of such persons
        are joint and several. The headings and titles to the articles, sections
        and subsections of this Lease are not a part of this Lease and shall
        have no effect upon the construction or interpretation of any part of
        this Lease.

SECTION 15.13 AUTHORITY OF TENANT. Tenant and each person signing this Lease on
        behalf of Tenant represents to Landlord as follows: Tenant, if a
        corporation, is duly incorporated and legally existing under the laws of
        the state of its incorporation and is duly qualified to do business in
        the State of Texas. Tenant, if a partnership or joint venture, is duly
        organized under the Texas Uniform Partnership Act. Tenant, if a limited
        partnership, is duly organized under the applicable limited partnership
        act of the State of Texas or, if organized under the laws of a state
        other than Texas, is qualified under said Texas limited partnership act.
        Tenant has all requisite power and all governmental certificates of
        authority, licenses, permits,

                                       20

<PAGE>   23

        qualifications and other documentation to lease the Premises and to
        carry on its business as now conducted and as contemplated to be
        conducted. Each person signing on behalf of Tenant is authorized to do
        so. The foregoing representations in this Section 15.13 shall also apply
        to any corporation, partnership, joint venture or limited partnership
        which is a general partner or joint venturer of Tenant.

SECTION 15.14 FORCE MAJEURE. Whenever a period of time is herein prescribed for
        action to be taken by Landlord or Tenant, the party taking the action
        shall not be liable or responsible for, and there shall be excluded from
        the computation for any such period of time, any delays due to strikes,
        riots, acts of God, shortages of labor or materials, war, governmental
        laws, regulations or restrictions or any other causes of any kind
        whatsoever which are beyond the reasonable control of such party;
        provided, however, in no event shall the foregoing apply to the
        financial obligations of either Landlord or Tenant to the other under
        this Lease, including Tenant's obligation to pay Basic Annual Rent,
        Additional Rent or any other amount payable to Landlord hereunder.

SECTION 15.15 RECORDING. This Lease shall not be recorded. However, Landlord
        shall have the right to record a short form or memorandum hereof, at
        Landlord's expense, at any time during the term hereof and, if
        requested, Tenant agrees (without charge to Landlord) to join in the
        execution thereof.

SECTION 15.16 NO REPRESENTATIONS. Landlord and Landlord's agents have made no
        warranties, representations or promises (express or implied) with
        respect to the Premises, the Building or any other part of the Property
        (including, without limitation, the condition, use or suitability of the
        Premises, the Building or the Property), except as herein expressly set
        forth and no rights, easements or licenses are acquired by Tenant by
        implication or otherwise except as expressly set forth in the provisions
        of this Lease.

SECTION 15.17 PARKING. If the Property includes a Garage, there shall be an
        Exhibit F. If there is no Garage included in the Property, then the
        remaining provisions of this Section shall be applicable with respect to
        parking. The parking areas shall be designated for automobile parking on
        a non-exclusive basis for all Property tenants (including Tenant) and
        their respective employees, customers, invitees and visitors. Parking
        and delivery areas for all vehicles shall be in accordance with parking
        regulations established from time to time by Landlord, with which Tenant
        agrees to conform. Tenant shall only permit parking by its employees,
        customers and agents of automobiles in appropriate designated parking
        areas.

SECTION 15.18 ATTORNEYS' FEES. In the event of any legal action or proceeding
        brought by either party against the other arising out of this Lease, the
        prevailing party shall be entitled to recover reasonable attorneys' fees
        and costs incurred in such action (including, without limitation, all
        costs of appeal) and such amount shall be included in any judgment
        rendered in such proceeding.

SECTION 15.19 NO LIGHT, AIR OR VIEW EASEMENT. Any diminution or shutting off of
        light, air or view by any structure which may be erected on the Property
        or lands adjacent to the Property shall in no way affect this Lease or
        impose any liability on Landlord (even if Landlord is the adjacent land
        owner).

SECTION 15.20 SURVIVAL OF INDEMNITIES. Each indemnity agreement and hold
        harmless agreement contained herein shall survive the expiration or
        termination of this Lease.

SECTION 15.21 ENTIRE AGREEMENT. This Lease contains all of the agreements of the
        parties hereto with respect to any matter covered or mentioned in this
        Lease and no prior agreement, understanding or representation pertaining
        to any such matter shall be effective for any purpose. No provision of
        this Lease may be amended or added to except by an agreement in writing
        signed by the parties hereto or their respective successors in interest.

        IN WITNESS WHEREOF, the parties hereto have executed and delivered this
        Lease, as of the date first written in this Lease.


                                              LANDLORD:
                                              B.0. 111, LTD.
                                              By: Office/Industrial, Inc.,
                                                  General Partner

                                              By: /s/ RICHARD S. HILL
                                                  ----------------------------
                                              Name: Richard S. Hill
                                              Title: President


                                              TENANT: 
                                              IXC COMMUNICATIONS SERVICES, INC.

                                              By: /s/ STUART K. COPPENS
                                                  ----------------------------
                                              Name: Stuart K. Coppens
                                              Title: VP

                                       21

<PAGE>   24

                                   EXHIBIT A

                          FLOOR PLAN FOR THE PREMISES





                                      A-1


<PAGE>   25


                                   EXHIBIT B

                             LAND LEGAL DESCRIPTION

BUILDING:             Barton Oaks III

LEGAL DESCRIPTION:    Building C, Unit No. 3, Barton Oaks Plaza Condominium, a
                      condominium project in Travis County, Texas, according to
                      the second Amended and Restated Declaration of Condominium
                      for Barton Oaks Plaza Condominium and amendments thereto,
                      recorded in Volume 12236, Page 567 of the Real Property
                      Records of Travis County, Texas, together with an
                      undivided interest in and to the common elements 
                      appurtenant thereto. 

ADDRESS:              901 South Mopac Expressway, Suite 200
                      Austin, Texas 78746



                                      B-1

<PAGE>   26

                                    EXHIBIT C

                              INTENTIONALLY OMITTED





                                      C-1

<PAGE>   27

                                    EXHIBIT D

                                   WORK LETTER
                    PLANS TO BE AGREED UPON/FINISH ALLOWANCE

        This Exhibit is attached to and apart of that certain Lease Agreement
dated as of December 7, 1998, executed by and between B. 0. 111, LTD.,
("Landlord") and IXC COMMUNICATIONS SERVICES, INC. ("Tenant"). Any capitalized
term used but not defined herein shall have the meaning assigned to it in the
provisions designated in the Lease as the Supplemental Lease Provisions.
Landlord and Tenant mutually agree as follows:

I . Plans.

1.1 Space Plan. On or before November 7 , 1998 , Landlord's designated space
planner, at Tenant's expense, shall prepare and deliver to Tenant a space plan
for the Premises showing, regardless of the quantities of such items, the
location of all partitions and doors and the lay-out of the Premises. Tenant
will at all times cooperate with Landlord's space planner, furnishing all
reasonable information and material concerning Tenant's organization, staffing,
growth expectations, physical facility needs (including, without limitation,
needs arising by reason of the Disability Acts), equipment, inventory, etc.,
necessary for the space planner to efficiently and expeditiously arrive at an
acceptable lay-out of the Premises. Tenant will approve or disapprove in writing
the space plan within five (5) business days after receipt from Landlord and if
disapproved, Tenant shall provide Landlord and Landlord's space planner with
specific reasons for disapproval. If Tenant fails to approve or disapprove the
space plan on or before the end of such five (5) business day period, Tenant
shall be deemed to have approved the last submitted space plan. The foregoing
process shall be repeated until Tenant has approved (which shall include deemed
approval) the space plan (such space plan, when approved by Landlord and Tenant,
is herein referred to as the "Space Plan").

1.2 Compliance With Disability Acts. Tenant shall promptly provide Landlord and
Landlord's space planner and/or architect as applicable, with all information
needed to cause the construction of Tenant's Improvements to be completed such
that Tenant, the Premises and Tenant's Improvements (as constructed) will be in
compliance with the Disability Acts. TENANT SHALL BE RESPONSIBLE FOR AND SHALL
INDEMNIFY AND HOLD HARMLESS LANDLORD FROM AND AGAINST ANY AND ALL CLAIMS,
LIABILITIES AND EXPENSES (INCLUDING, WITHOUT LIMITATION REASONABLE ATTORNEYS'
FEES AND EXPENSES) INCURRED BY OR ASSERTED AGAINST LANDLORD BY REASON OF OR IN
CONNECTION WITH ANY VIOLATION OF THE DISABILITY ACTS ARISING FROM OR OUT OF (x)
information or design and space plans furnished to Landlord by Tenant (or the
lack of complete and accurate information so furnished) concerning Tenant's
Improvements, (y) Tenant's employer-employee obligations, or (z) after the
Commencement Date, violations by Tenant and/or Tenant's Improvements or the
Premises not being in compliance with the Disability Acts as the result of
changes in regulations or law or interpretations thereof not in effect on the
Commencement Date. The foregoing indemnity shall not include any claims,
liabilities or expenses (including reasonable attorneys' fees and expenses)
arising out of the negligence or gross negligence of Landlord or Landlord's
employees, agents or contractors. Without limiting the foregoing, if Landlord
constructs Tenant's Improvements based on any special requirements or
improvements required by Tenant, or upon information furnished by Tenant that
later proves to be inaccurate or incomplete resulting in any violation of the
Disability Acts, Tenant shall be solely liable to correct such violations and to
bring the improvements into compliance with the Disability Acts as promptly as
is practicable.

1.3 Construction Plans. On or before fifteen (15) days after approval of the
Space Plan, the Design and Color Scheme and the Above Standard Product
Specification List by Landlord and Tenant, Landlord's space planner and
engineer, at Tenant's expense, will prepare construction plans (such
construction plans, when approved, and all changes and amendments thereto agreed
to by Landlord and Tenant in writing, are herein called the "Construction
Plans") for all of Tenant's improvements requested pursuant to the Space Plan,
the Design and Color Scheme and the Above Standard Product Specification List
(all improvements required by the Construction Plans are herein called "Tenant's
Improvements"), including complete detail and finish drawings for partitions,
doors, reflected ceiling, telephone outlets, electrical switches and outlets and
Building standard heating, ventilation and air conditioning equipment and
controls. Within ten (10) business days after construction plans are delivered
to Tenant, Tenant shall approve (which approval shall not be unreasonably
withheld) or disapprove same in writing and if disapproved, Tenant shall provide
Landlord and Landlord's space planner and engineer specific reasons for
disapproval. The foregoing process shall continue until the construction plans
are approved by Tenant; provided that if Tenant fails to respond in any ten (10)
business day period, Tenant shall be deemed to have approved the last submitted
construction plans.

1.4 Changes to Approve Plans. If any re-drawing or re-drafting of either the
Space Plan or the Construction Plans is necessitated by Tenant's requested
changes (all of which shall be subject to approval by Landlord and, if
applicable, the Texas Department of Licensing & Regulation and any other
governmental agency or authority to which the plans and specifications are
required to be submitted), the expense of any such re-drawing or re-drafting
required in connection therewith and the expense of any work and improvements
necessitated by such re-drawing or re-drafting will be charged to Tenant.

1.5 Coordination of Planners and Designers. If Tenant shall arrange for interior
design services, whether with Landlord's space planner or any other planner or
designer, it shall be Tenant's responsibility to cause necessary coordination of
its agents' efforts with Landlord's agents to ensure that no delays are caused
to either the planning or construction of the Tenant's Improvements.

1.6 Building Shell. Landlord shall perform the following Building shell work at
Landlord's sole cost and expense:

     (a) Building standard VAV system, rigid duct work, perimeter slot diffusers
         (excluding internal zone flex duct and supply grills).

     (b) Building standard window treatments.

     (c) Building standard ceiling grid installed with 2 x 4 ceiling tile
         stacked on the floor and 2 x 4 parabolic light fixtures at a ratio of 1
         per 90 useable square feet stacked on the floor.

     (d) Sprinkler heads installed at 1 per 225 useable square feet.

     (e) All Building common areas installed.


                                      D-1

<PAGE>   28

2.       Construction and Costs of Tenant's Improvements.

2.1      Construction Obligatio and Finish Allowance.

     (a) Landlord agrees to construct Tenant's Improvements, at Tenant's cost
         and expense; provided, however, Landlord shall provide Tenant with an
         allowance of $15.00 per rentable square foot in the Premises (the
         "Finish Allowance"), which allowance shall be disbursed by Landlord,
         from time to time, for payment of (in the following priority) (i) the
         contract sum required to be paid to the general contractor engaged to
         construct Tenant's Improvements, which contract sum shall include
         without limitation, the costs of any and all payment and performance
         bonds required by Landlord in connection with the construction of
         Tenant's Improvements and any other costs incurred by such general
         contractor to comply with the construction requirements applicable to
         the Building (THE "CONTRACT SUM"), (II) THE FEES of the preparer of the
         Construction Plans, (iii) payment of the Construction Management Fee
         (hereinafter defined), and (iv) such other costs related to the
         leasehold improvements (such as equipment, appliances and furnishings)
         as Tenant shall specify. Upon completion of Tenant's Improvements and
         in consideration of Landlord administering the construction of Tenant's
         Improvements, Tenant agrees to pay Landlord a fee equal to four percent
         (4%) of the Contract Sum to construct Tenant's Improvements (the
         "Construction Management Fee") (the foregoing costs are collectively
         referred to as the "Permitted Costs").

     (b) Title to any equipment, appliances, furnishings or personalty installed
         in the Premises and purchased with any portion of the Finish Allowance
         shall pass to Landlord upon payment of the invoice cost thereof and
         Tenant shall not remove any such equipment, appliances, furnishings or
         personalty from the Premises without Landlord's express, prior written
         consent or unless requested by Landlord in connection with the
         expiration or earlier termination of the Lease.

2.2 Excess Costs. If the sum of the Permitted Costs exceeds the Finish
Allowance, then Tenant shall pay all such excess costs ("Excess Costs"),
provided, however, Landlord will, prior to the commencement of construction of
Tenant's Improvements, advise Tenant of the Excess Costs, if any, and the
Contract Sum. Tenant shall have five (5) business days from and after the
receipt of such advice within which to approve or disapprove the Contract Sum
and Excess Costs. If Tenant fails to approve same by the expiration of the
second such business day, then Tenant shall be deemed to have approved the
Proposed Contract Sum and Excess Costs. If Tenant disapproves the Contract Sum
and Excess Costs within such five (5) business day period, then Tenant shall
either reduce the scope of Tenant's Improvements such that there shall be no
Excess Costs or, at Tenant's option, Landlord shall obtain two (2) additional
bids, provided that each day beyond such five (5) business day period and until
the rebid is accepted by Tenant shall constitute a Tenant Delay hereunder.
Subject to the last sentence of this subsection, the foregoing process shall
continue until a Contract Sum and resulting Excess Costs, if any, are accepted
or deemed accepted by Tenant. Landlord and Tenant must approve (or be deemed to
have approved) the Contract Sum for the construction of Tenant's Improvements in
writing prior to the commencement of construction. If Tenant fails to accept a
Contract Sum by December 15, 1998, Tenant will be in Tenant delays. If Landlord
does not complete the premises within sixty (60) days after the later to occur
of (i) the date Tenant approves the contract sum and (ii) the date a building
permit for the construction of the Tenant's Improvement is issued. Landlord
shall incur a $ 1,000.00 per day penalty for each day delay.

2.3 Liens Arising from Excess Costs. Tenant agrees to keep the Premises free
from any liens arising out of nonpayment of Excess Costs. In the event that any
such lien is filed and Tenant, within thirty (30) days following such filing
fails to cause same to be released of record by payment or posting of a proper
bond, Landlord shall have, in addition to all other remedies provided herein and
by law, the right, but not the obligation, to cause the same to be released by
such means as it in its sole discretion deems proper, including payment of or
defense against the claim giving rise to such lien. All sums paid by Landlord in
connection therewith shall constitute Rent under the Lease and a demand
obligation of Tenant to Landlord and such obligation shall bear interest at the
rate provided for in Section 15. 10 of the Supplemental Lease Provisions from
the date of payment by Landlord until the date paid by Tenant.

2.4 Construction Deposi . Tenant shall remit to Landlord an amount (the
"Prepayment") equal to fifty percent (50%) of the projected Excess Costs, if
any, within five (5) working days after commencement of construction by
Landlord. On or prior to the Commencement Date, Tenant shall deliver to Landlord
the actual Excess Costs, minus the Prepayment previously paid. FAILURE BY TENANT
TO TIMELY TENDER to Landlord the full Prepayment shall permit Landlord to stop
all work until the Prepayment is received. All sums due Landlord under this
Section 2.4 shall be considered Rent under the terms of the Lease and nonpayment
shall constitute a DEFAULT UNDER THE LEASE AND entitle Landlord to any and all
remedies specified in the Lease.

3. Delays. Delays in the completion of construction of Tenant's Improvements or
in obtaining a certificate of occupancy, if required by the applicable
governmental authority, caused by Tenant, Tenant's Contractors (hereinafter
defined) or any person, firm or corporation employed by Tenant or Tenant's
Contractors shall constitute "Tenant Delays". In the event THAT TENANT'S
IMPROVEMENTS ARE not Substantially Complete by the Commencement Date referenced
in Item 6 of the Basic Lease Provisions, then the Commencement Date referenced
in Item 6 shall be amended to be the Adjusted Substantial Completion Date
(hereinafter defined) and the Expiration Date referenced in Item 7 of the Basic
Lease Provisions shall be adjusted forward by the same number of days as is the
Commencement Date, so that the term of the Lease will be the term set forth in
Item 5 of the Basic Lease Provisions. The Adjusted Substantial Completion Date
shall be the date Tenant's Improvements are Substantially Complete, adjusted
backward, however, by one day for each day of Tenant Delays, if any. The
foregoing adjustments in the Commencement Date and the Expiration Date shall be
Tenant's sole and exclusive remedy in the event Tenant's Improvements are not
Substantially Complete by the initial Commencement Date set FORTH IN ITEM 6 OF
the Basic Lease Provisions.

4. Substantial Completio and Punch List. The terms "Substantial Completion" and
"SUBSTANTIALLY COMPLETE," AS APPLICABLE, SHALL mean ten (10) days after the date
when Tenant's Improvements are sufficiently completed in accordance with the
Construction Plans and a certificate of occupancy has been issued for the
Premises so that Tenant can reasonably use the Premises for the Permitted Use
(as described in Item 10 of the Basic Lease Provisions). When Landlord considers
Tenant's Improvements to be SUBSTANTIALLY COMPLETE,

                                      D-2

<PAGE>   29

Landlord will notify Tenant and within two (2) business days thereafter,
Landlord's representative and Tenant's representative shall conduct a
walk-through of the Premises and identify any necessary touch-up work, repairs
and minor completion items as are necessary FOR FINAL COMPLETION ofTenant's
Improvements. Neither Landlord's representative nor Tenant's representative
shall unreasonably withhold his agreement on punch list items. Landlord will use
reasonable efforts to cause the contractor to complete all punch list items
within thirty (30) days after agreement thereon.

5. Tenant's Contractors. If Tenant should desire to enter the Premises or
authorize its agent to do so prior to the Commencement Date of the Lease, to
perform approved work not requested of the Landlord, Landlord shall permit such
entry if

     (a) Tenant shall use only such contractors which Landlord shall approve in
         its reasonable discretion and Landlord shall have approved the plans to
         be utilized by Tenant, which approval will not be unreasonably
         withheld; and

     (b) Tenant, its contractors, workmen, mechanics, engineers, space planners
         or such others as may enter the Premises (collectively, "Tenant's
         Contractors"), work in harmony with and do not in any way disturb or
         interfere with Landlord's space planners, architects, engineers,
         contractors, workmen, mechanics or other agents or independent
         contractors in the performance of their work (collectively, "Landlord's
         Contractors"), it being understood and agreed that if entry of Tenant
         or Tenant's Contractors would cause, has caused or is causing a
         material disturbance to Landlord or Landlord's Contractors, then
         Landlord may, with notice, refuse admittance to Tenant or Tenant's
         Contractors causing such disturbance; and

     (c) Tenant (notwithstanding the first sentence of subsection 7.201 of the
         Supplemental Lease Provisions), Tenant's Contractors and other agents
         shall provide Landlord sufficient evidence that each is covered under
         such Worker's Compensation, public liability and property damage
         insurance as Landlord may reasonably request for its protection.

Landlord shall not be liable for any injury, loss or damage to any of Tenant's
installations or decorations made prior to the Commencement Date and not
installed by Landlord. Tenant shall indemnify and hold harmless Landlord and
Landlord's Contractors from and against any and all costs, expenses, claims,
liabilities and causes of action arising out of or in connection with work
performed in the Premises by or on behalf of Tenant (but excluding work
performed by Landlord or Landlord's Contractors). Landlord is not responsible
for the function and maintenance of Tenant's Improvements which are different
than Landlord's standard improvements at the Property or improvements,
equipment, cabinets or fixtures not installed by Landlord. Such entry by Tenant
and Tenant's Contractors pursuant to this Section 5 shall be deemed to be under
all of the terms, covenants, provisions and conditions of the Lease except the
covenant to pay Rent,

6. Construction Representatives. Landlord's and Tenant's representatives for
coordination of construction and approval of change orders will be as follows,
provided that either party may change its representative upon written notice to
the other:

LANDLORD'S REPRESENTATIVE:

NAME:          Sam J. Houston Ben Greider
ADDRESS:       2800 Industrial Terrace
               Austin, Texas 78758-7604
PHONE:         512.835.4455

TENANTS REPRESENTATIVE:

NAME: ADDRESS:__________________________
              __________________________
PHONE:__________________________________
      __________________________________

                                      D-3

<PAGE>   30

                                   EXHIBIT E

                       ACCEPTANCE OF PREMISES MEMORANDUM

       THIS Acceptance of Premises Memorandum is being executed pursuant to that
certain Lease Agreement (the "Lease") between B. 0. 111, LTD., ("Landlord"), and
IXC COMMUNICATIONS SERVICES, INC., ("Tenant"), pursuant to which Landlord leased
to Tenant and Tenant leased from Landlord certain space in the office building
located at 901 S. Mopac Expressway Building III in Austin, Texas (the
"Building"). Landlord and Tenant hereby agree that:

1.   Except for the Punch List Items (as shown on the attached Punch List),
     Landlord has fully completed the construction work required under the terms
     of the Lease and the Work Letter attached thereto.

2.   The Premises are tenantable, Landlord has no further obligation for
     construction (except with respect to Punch List Items) and Tenant
     acknowledges that the Building, the Premises and Tenant's Improvements are
     satisfactory in all respects, except for the Punch List Items and are
     suitable for the Permitted Use.

3.   The Commencement Date of the Lease is ______________. If the date set forth
     in Item 6 of the Basic Lease Provisions is different than the date set
     forth in the preceding sentence, then Item 6 of the Basic Lease Provisions
     is hereby amended to be the Commencement Date set forth in the preceding
     sentence.

4.   The Expiration Date of the Lease is ________________ If the date set forth
     in Item 7 of the Basic Lease Provisions is different than the date set
     forth in the preceding sentence, then Item 7 of the Basic Lease Provisions
     is hereby amended to be the Expiration Date set forth in the preceding
     sentence.

5.   Tenant acknowledges receipt of the current Rules and Regulations for the
     Building.

6.   Tenant represents to Landlord that Tenant has obtained a Certificate of
     Occupancy covering the Premises.

7.   Tenant's telephone number at the Premises is ____________________. Tenant's
     facsimile number at the Premises is ______________.

8.   All capitalized terms not defined herein shall have the meaning assigned to
     them in the Lease.

     AGREED and EXECUTED this ____________day of ___________________, ________.


                                        LANDLORD:
                                        B.O. III, LTD.
                                        By: Office/Industrial, Inc., 
                                            General Partner

                                        Name: Richard S. Hill
                                              ----------------------------------
                                        Title: President
                                        Address: 2800 Industrial Terrace
                                                 Austin, TX 78758

                                        TENANT:
                                        IXC COMMUNICATIONS SERVICES, INC.

                                        By: ____________________________________
                                        Name: __________________________________
                                        Title: _________________________________
                                        Address: _______________________________
                                        ________________________________________


                                      E-1


<PAGE>   31

                                   EXHIBIT F

                            GARAGE PARKING AGREEMENT
                    RESERVED AND NON-RESERVED PARKING SPACES

        This Exhibit is attached to and apart of that certain Lease Agreement
dated as of December 7, 1998, executed by and between B. 0. 111, LTD.,
("Landlord") and IXC COMMUNICATIONS SERVICES, INC. ("Tenant"). Any capitalized
term used but not defined herein shall have the meaning assigned to it in the
provisions designated in the Lease as the Supplemental Lease Provisions.
Landlord and Tenant mutually agree as follows:

1.      PARKING Spaces. So long as the Lease remains in effect, Tenant or
        persons designated by Tenant shall have the right (but not the
        obligation) to rent in the Garage on (i) a reserved basis up to five (5)
        parking spaces in the Garage during the term of this Lease and (ii) an
        unreserved and non-exclusive basis up to 84 parking spaces in the Garage
        during the term of this Lease.

2.      Parking RENTAL. On the execution date of the Lease, the monthly rate for
        each unreserved parking space is $0.00 plus applicable sales tax and the
        monthly rate for each reserved parking space is $0.00 plus applicable
        sales tax. Landlord shall provide Tenant at least thirty (30) days
        notice of any change in the parking rates at the Garage and the giving
        of such notice shall be deemed an amendment to this Agreement and Tenant
        shall thereafter pay the adjusted rent. All payments of rent for parking
        spaces shallbe made (i) at the same time as Basic Monthly Rent is due
        under the Lease and (ii) to Landlord or to such persons (for example but
        without limitation, the manager of the Garage) as Landlord may direct
        from time to time.

3.      LOST PARKIN CARDS. There will be a replacement charge payable by Tenant
        equal to the amount posted from time to time by Landlord for loss of any
        magnetic parking card or parking sticker issued by Landlord.

4.      VALIDATION. Tenant may validate visitor parking, by such method or
        methods as Landlord or the Garage operator may approve, at the
        validation rate from time to time generally applicable to visitor
        parking. Landlord expressly reserves the right to redesignate parking
        areas and to modify the parking structure for other uses or to any
        extent.

5.      PARKING STICKERS AND CARDS. Parking stickers or any other device or form
        of identification supplied by Landlord shall remain the property of
        Landlord and shall not be transferable.

6.      DAMAGE TO OR CONDEMNATION OF GARAGE. If Landlord fails or is unable to
        provide any parking space to Tenant in the Garage because of damage or
        condemnation, such failure or inability shall never be deemed to be a
        default by Landlord as to permit Tenant to terminate the Lease, either
        in whole or in part, but Tenant's obligation to pay rent for any such
        parking space which is not provided by Landlord shall be abated for so
        long as Tenant does not have the use of such parking space and such
        abatement shall constitute full settlement of all claims that Tenant
        might otherwise have against Landlord by reason of such failure or
        inability to provide Tenant with such parking space.

7.      RULES AND REGULATIONS. A condition of any parking shall be compliance by
        the parker with Garage rules and regulations, including any sticker or
        other identification system established by Landlord. Garage managers or
        attendants are not authorized to make or allow any exceptions to these
        Rules and Regulations. The following rules and regulations are in effect
        until notice is given to Tenant of any change. Landlord reserves the
        right to modify and/or adopt such other reasonable and generally
        applicable rules and regulations for the Garage as it deems necessary
        for the operation of the Garage.

        (a) Cars must be parked entirely within the stall lines painted on the
            floor.

        (b) All directional signs and arrows must be observed,

        (c) The speed limit shall be five (5) miles per hour.

        (d) Parking is prohibited in areas not striped for parking, aisles,
            areas where "no parking" signs are posted, in cross hatched areas
            and in such other areas as may be designated by Landlord or
            Landlord's agent(s) including, but not limited to, areas designated
            as "Visitor Parking" or reserved spaces not rented under this
            Agreement.

        (e) Every parker is required to park and lock his own car. All
            responsibility for damage to cars or persons or loss of personal
            possessions is assumed by the parker.

        (f) Spaces which are designated for small, intermediate or full-sized
            cars shall be so used. No intermediate or full-size cars shall be
            parked in parking spaces limited to compact cars.

8.      DEFAULT. Failure to promptly pay the rent required hereunder shall
        constitute a default under the Lease and Landlord, may, at
        its option and in addition to all other remedies provided for in the
        Lease, terminate Tenant's rights to use the Garage. Landlord may refuse
        to permit any person who violates the rules to park in the Garage and
        any violation of the rules shall subject the car to removal at the car
        owner's expense. No such refusal or removal shall create any liability
        on Landlord or be deemed to interfere with Tenant's right to quiet
        possession of the Premises.


                                      F-1

<PAGE>   32

                                     RIDER 1

                                 RIGHT TO AUDIT

        This Exhibit is attached to and a part of that certain Lease Agreement
dated as of December 7, 1998 executed by and between B. 0. 111, LTD.
("Landlord") and IXC COMMUNICATIONS SERVICES, INC. ("Tenant"). ANY CAPITALIZED
TERM USED BUT NOT DEFINED herein shall have the meaning assigned to it in the
provisions designated in the Lease as the Supplemental Lease Provisions.
Landlord and Tenant mutually agree as follows:

        Tenant shall have the right to perform an annual audit at Tenant's
expense on Landlord's books and records to the extent necessary to verify
Landlord's calculation of actual Additional Rent for the prior calendar year,
provided the auditor's report reflecting the results of such audit shall be
promptly delivered to Landlord. Any such audit shall be conducted, if at all,
(i) within sixty (60) days after the receipt of the annual statement of actual
Additional Rent from Landlord, (ii) during Landlord's normal business hours,
(iii) at the place where Landlord maintains its records (or such other place as
Landlord shall deliver the appropriate records) and (iv) only after Landlord has
received ten (10) days prior written notice. If the audit report reflects that
estimated Additional Rent was overcharged or undercharged in the audited
calendar year and provided Landlord does not successfully dispute such audit,
Tenant shall within thirty (30) days following receipt of thereof report pay to
Landlord the amount of any underpayment or, if applicable, Landlord shall allow
Tenant a credit against the next accruing installments of Additional Rent in the
amount of any overpayment or if the Term has expired, or is about to expire,
Landlord shall pay such overpayment to Tenant within thirty (30) days after the
audit. Landlord shall reimburse Tenant for one-half (1/2) the reasonable cost of
any audit which results in a five percent (5 %) or greater reduction of Tenant's
pro rata share of Operating Expenses.




                                    Rider 1

<PAGE>   33

                                    RIDER 2

                    RIGHT TO SUBLEASE OR ASSIGN TO AFFILIATE
                        AND ADDITIONAL SUBLEASING RIGHTS

        This Exhibit is attached to and a part of that certain Lease Agreement
dated as of December 7, 1998. executed by and between B.O. III, LTD ("Landlord")
and IXC COMMUNICATIONS SERVICES, INC ("Tenant"). Any capitalized term used but
not defined herein shall have the meaning assigned to it in the provisions
designated in the Lease as the Supplemental Lease Provisions. Landlord and
Tenant mutually agree as follows:

        Notwithstanding the restrictions against assignment and subleasing
contained in Sections 11. 1 and 11.2 of the Supplemental Lease Provisions,
Tenant may, without the prior written consent of Landlord, but only after giving
Landlord at least thirty (30) days prior written notice (Which notice shall
include the identity of the Affiliate (hereinafter defined) and the relationship
of the Affiliate to Tenant), sublet the Premises or any put thereto or any part
thereof to an Affiliate or assign this Lease to an Affiliate or permit occupancy
of any portion of the Premises by an Affiliate. If Tenant is a partnership, the
term "Affiliate" shall mean (i) any entity which, directly or indirectly,
controls or is controlled by or is under common control with the general partner
of Tenant (ii) any entity not less than fifty percent (50%) of whose outstanding
stock shall, at the firm be owned directly or indirectly by Tenant's general
partner or (iii) any partnership or joint venture in which Tenant or the general
partner of Tenant is a general partner or joint venturer (with joint and several
liability for all of the partnership's or venture's obligations). If Tenant is a
corporation, limited liability company or individual, the term "Affiliate" shall
mean (i) any entity which, directly or indirectly, controls or is controlled by
or is under common control with Tenant or (ii) any corporation or limited
liability company not less than fifty percent (50%) of whose outstanding stock
or interests shall, at the time, be owned directly or indirectly by Tenant or
Tenant's parent corporation or limited liability company. For purposes of this
Rider, "control" shall mean the possession, directly or indirectly, of the power
to direct or cause the direction of the management and policies of such entity,
whether through the ownership of voting securities or by contract or otherwise
and ownership of the liabilities, losses, profits and tax benefits for such
entity.

        In addition, Tenant shall have the right to assign or otherwise transfer
this Lease Agreement to any parent subsidiary or affiliate of itself or any
corporation into which it may be merged or consolidated or which purchases all
or substantially all of its assets; provided, however, that any such assignment
or transfer shall be subject to Landlord's rights under THIS Lease Agreement and
any assignee or transferee shall commit to perform Tenant's obligations to
Landlord under THIS Lease Agreement Further, notwithstanding the restrictions
against subleasing contained in Sections 11. 1 and 11.2 of the Supplemental
Lease Provisions, Tenant may, without the prior written consent of Landlord,
permit the occupancy by or sublease up to forty-five percent (45%) of the Agreed
Rentable Area of office space within the Premises to an entity related to
Tenant; provided that the portion of the Premises subject to such occupancy or
sublease shall not be separately demised from the remaining Premises. It is the
intent of the Landlord and Tenant that the right described in the foregoing
sentence is to be used by Tenant in connection with permitting the occupancy of
or subleasing a particular office or offices within the Premises to a third
party, but not to permit the related entity to occupy separate space which is
directly accessible without entering the Premises. In the event Tenant grants
any occupancy rights or executes any sublease pursuant to the provisions of THIS
paragraph, then notwithstanding anything to the contrary in Article I I of the
Lease, Landlord shall not be entitled to cancel the Lem with respect to such
space and Landlord shall not be entitled to any compensation in connection
therewith.


                                    Rider 2
<PAGE>   34

                                    RIDER 3

                       CAP ON CERTAIN OPERATING EXPENSES

        This Rider is attached to and a part of that certain Lease Agreement
dated as of December 7, 1998, executed by and between B.0. 111, LTD.
("Landlord"), and, IXC COMMUNICATIONS SERVICES, INC. ("Tenant"). Any capitalized
term used but not defined herein shall have the meaning assigned to it in the
provisions designated in the Lease as the Supplemental Lease Provisions.
Landlord and Tenant mutually agree as follows:

        For the purpose of determining Additional Rent, Operating Expenses
(exclusive of the Non-Capped Operating Expenses, as hereinafter defined) for any
calendar year shall not be increased over the amount of Operating Expenses
(exclusive of Non-Capped Operating Expenses) during the calendar year in which
the term of this Lease commences by more than EIGHT percent (8%) per year on a
cumulative basis, compounded annually. For example, if Operating Expenses
(exclusive of Non-Capped Operating Expenses) during the calendar year in which
the term of this Lease commences were $ 100,000, the cap on Operating Expenses
(exclusive of Non-Capped Operating Expenses) for the fourth full calendar year
would be $ , 136,048.89 ($ 100,000 times 1.08 times 1.08 times 1.08 times 1.28).
It is understood and agreed that there shall be no cap on Non-Capped Operating
Expenses, which are hereby defined to mean all Utility Expenses and Insurance
Premiums.


                                    Rider 3
<PAGE>   35

                                   RIDER H-1

                 TENANT'S STUDY, TESTING AND INSPECTION RIGHTS

        This Exhibit is attached to and a part of that certain Lease Agreement
dated as of December 7, 1998 executed by and between B.0. 111, LTD. ("Landlord")
and IXC COMMUNICATIONS SERVICES- INC. ("Tenant"). Any capitalized term used but
not defined herein shall have the meaning assigned to it in the provisions
designated in the Lease as the Supplemental Lease Provisions. Landlord and
Tenant mutually agree as follows:

        Prior to commencement of any tenant finish work to be performed by
Landlord, Tenant shall have the right to make such studies and investigations
and conduct such tests and surveys of the Premises from an environmental
standpoint as Tenant deems necessary or appropriate, subject to the condition
that all such studies and investigations shall be completed prior to the
commencement of any tenant finish work to be performed by Landlord. TENANT SHALL
INDEMNIFY AND HOLD HARMLESS LANDLORD FROM, AND REIMBURSE LANDLORD FOR AND WITH
RESPECT TO, ANY AND ALL LOSS, DAMAGES, AND CLAIMS RESULTING FROM OR RELATING TO
TENANT'S STUDIES, TESTS AND INVESTIGATIONS. If such study, test, investigation
or survey evidences hazardous or toxic materials which affect the Premises,
Tenant shall have the right to terminate this Lease provided such right shall be
exercised, if at all, prior to the commencement of any tenant finish work to be
performed by Landlord and, in any event, within five (5) days after Tenant
receives the evidence of hazardous or toxic materials. If Tenant does not
exercise such right prior to commencement of any such tenant finish work and
within such five (5) day period, Tenant's right to terminate this Lease shall be
null and void and of no further force or effect.


<PAGE>   1
                                                                                
                                                                 EXHIBIT 10.25


                              EMPLOYMENT AGREEMENT

        This employment agreement ("Agreement") is made as of December 17, 1998
by and between IXC Communications, Inc., a Delaware corporation (the "Company"),
and Michael W. Vent ("Employee").

                                   BACKGROUND

        Employee is now, and has been for several years, employed by the Company
as an "at will" employee. The Company and Employee now desire to enter into a
formal employment contract with a fixed term and certain non-compete and other
provisions, all as set forth herein.

        NOW, THEREFORE, in consideration of the premises and the mutual
covenants and agreements contained herein, the parties hereto, intending to be
legally bound, hereby agree as follows:

 SECTION 1. CAPACITY AND DUTIES

        1.1 Employment, Acceptance of Employment Effective December 17, 1998,
the Company employs Employee as President, Network Services, and Employee hereby
accepts such employment with the Company, for the period and upon the terms and
conditions hereinafter set forth.

        1.2 Capacity and Duties.

        (a) Employee shall be employed by the Company as President, Network
Services, and shall perform such duties and shall have such authority,
consistent with his position, as may from time to time reasonably be specified
by the Board of Directors of the Company (the "Board").

        (b) Employee shall devote Employee's full-time attention, energies,
skills, learning and best efforts to the business of the Company and, during the
term of this Agreement, shall not be engaged, directly or indirectly, in any
other business activity or render services of a business, professional or
commercial nature to any other person, firm or corporation, in competition with
the Company, except as otherwise agreed to in writing by the Company.

 SECTION 2. TERM OF EMPLOYMENT

        2.1 Term. The term of Employee's employment hereunder shall commence on
December 17, 1998, and shall continue until December 31, 2000, unless earlier
terminated as hereinafter provided. Upon the expiration of such term, Employees
employment with the Company shall continue on an at will employment basis until
terminated by either party.

<PAGE>   2

SECTION 3. COMPENSATION

        3.1 Basic Compensation. As compensation for Employee's services
hereunder, the Company shall pay to Employee a salary at the annual rate of
$270K payable in periodic installments in accordance with the Company's regular
payroll practices in effect from time to time, or at such higher annual rate as
the Board shall from time to time determine in its sole discretion. The Board
shall review Employee's salary no less frequently than annually.

        3.2 Incentive Compensation. In addition to the base salary provided in
Section 3.1 hereof, Employee shall be eligible to receive an annual bonus in
accordance with the Company's policy, targeted at the same percentage of base
salary as other senior executives of the Company, upon meeting the defined
corporate objectives set by the Board and the personal objectives set by the
CEO.

        3.3 Health and Dental Benefits. In addition to the compensation provided
for in Section 3.1 and Section 3.2 hereof, Employee shall be entitled to all
rights and benefits for which Employee is eligible under any health and dental
insurance policies that IXC provides to its employees or officers in comparable
positions during the term of this Agreement.

        3.4 Vacation. Employee shall be entitled to paid vacation during the
term of his employment hereunder in accordance with the Company's vacation
policy.

        3.5 Reimbursement of Business Expenses. The Company will, upon
submission of appropriate documentation, promptly reimburse employee for
reasonable and authorized business expenses (including travel, entertainment,
business meetings, telephone and similar items) incurred by Employee during the
term of this Agreement in accordance with the Company's policy.

        3.6 Stock Options. In consideration of Employee entering into this
Agreement and specifically agreeing to the noncompetition provisions of
paragraph 5.1 below, Employee shall be granted stock options covering 100,000
shares of common stock of IXC Communications, Inc. issued at a strike price
equal to the closing market price on the date Employee commences employment
hereunder. These options will vest equally over four (4) years, twenty-five
percent on each one year anniversary of the commencement of Employees
employment, under the terms of the standard Stock Option Agreement for SLT
members to be subsequently executed between Company and Employee. Such stock
options shall be granted by the Administrative Committee of the Board.

        3.7 Loan. The Company will loan Employee $200,000.00. Such loan will
bear interest at the rate of seven percent (7%) per annum, compounded annually,
and will be due and payable one hundred twenty (120) days after termination of
Employee's employment with the company. The loan, including all interest accrued
thereon, will be subject to forgiveness at the time of, and in accordance with,
the following provisions: 


                                      -2-

<PAGE>   3

            3.7.1 Twenty-five percent (25%) of the outstanding balance of the
                  loan, including all interest thereon, will be forgiven on each
                  one year anniversary of the commencement of this Agreement
                  (December 17th of each year), provided Employee is still
                  employed by the Company on such date.

            3.7.2 The outstanding balance of the loan, including all interest
                  accrued thereon, will be forgiven upon the termination of
                  Employee's employment hereunder in accordance with the
                  provisions of paragraphs 4.1, 4.2, or 4.4 of this Agreement,
                  or a Change of Control as that term is defined in Section 4:
                  CHANGE IN CONTROL in Employee's Non-Qualified Stock Option
                  Agreement under the IXC Communications, Inc. 1998 Stock Plan.

        3.8 Other Benefits. In addition to the benefits set forth in this
Section 3, Employee shall be entitled to all other rights and benefits that IXC
provides to its employees or officers in comparable positions during the term of
this Agreement.

SECTION 4. TERMINATION OF EMPLOYMENT

        4.1 Death of Employee Employee's employment hereunder shall immediately
terminate upon his death.

        4.2 Disability of Employee. If Employee, in the reasonable opinion of a
physician selected by the Board, is materially unable, due to a physical, mental
or emotional illness or condition, to perform his duties hereunder for a period
of three consecutive months, the Board shall have the right to terminate
Employee's employment upon 30 days' prior written notice to Employee at any time
during the continuation of such inability.

        4.3 Termination for Cause. The Board may terminate Employee's employment
hereunder for "cause" immediately upon written notice to Employee. As used
herein, "cause" shall mean the following:

            (a) fraud committed in connection with Employee's employment, or
theft, misappropriation or embezzlement of the Company's funds or property;

            (b) conviction of any felony, crime involving fraud or
misrepresentation, or any other crime the effect of which is likely to
materially adversely affect the Company;


                                      -3-

<PAGE>   4

            (c) failure to follow a reasonable lawful directive of the Board or
an authorized Company officer or director following two business days' notice
that such failure shall constitute grounds for termination for cause; or

            (d) abuse of alcohol or other drugs which materially interferes with
the performance by Employee of his duties hereunder, provided that Employee has
been given 30 days' prior written notice by the Board of its intent to terminate
Employee pursuant to this provision during which time Employee has not
demonstrated the cessation of such abuse to the reasonable satisfaction of the
Board.

        4.4 Termination Without Cause. If the Employee's employment is
terminated by the Company for any reason other than as set forth above,
Employee's termination shall be considered "without cause."

        4.5 Payments upon Termination.

            (a) If Employee's employment is terminated as a result of his death,
the Company shall not thereafter be obligated to make any further payments under
this Agreement other than amounts payable hereunder accrued as of the date of
Employee's death in accordance with generally accepted accounting principles.

            (b) If Employee's employment is terminated by the Company pursuant
to Section 4.2 (disability), the Company shall not thereafter be obligated to
make any further payments under this Agreement other than amounts payable
hereunder accrued as of the date of Employee's termination in accordance with
generally accepted accounting principles.

            (c) If Employee's employment is terminated by the Company pursuant
to Section 4.3 (cause), the Company shall not thereafter be obligated to make
any further payments under this Agreement other than amounts payable hereunder
accrued as of the date of Employee's termination in accordance with generally
accepted accounting principles.

            (d) If Employee's employment is terminated by the Company pursuant
to Section 4.4 (without cause) the Company shall not thereafter be obligated to
make any further payments under this Agreement other than (i) amounts payable
hereunder accrued as of the date of Employee's termination in accordance with
generally accepted accounting principles, and (ii) severance payments in an
amount equal to the sum of the payments and obligations set forth in Sections
3.1, and 3.3 from the date of such termination until December 31, 2000.
Moreover, if Employee's employment is terminated by the Company pursuant to
Section 4.4 (without cause), it is understood that only for purposes of
Employee's Stock Option Agreement and the provisions of paragraph 3.7,
Employee's termination shall be deemed to have occurred on December 31, 2000.


                                      -4-


<PAGE>   5

        4.6 No Mitigation. There shall be no requirement on the part of Employee
to seek other employment or otherwise mitigate damages in order to be entitled
to the full amount of any payments or benefits to be made pursuant to this
Agreement and payments due in respect of periods following the termination of
employment shall not be diminished by any amounts earned by Employee from any
other employment.

SECTION 5. MISCELLANEOUS

        5.1 Noncompetition. During the term of Employee's employment hereunder,
and continuing until the earliest to occur of the following: (i) January 1, 2001
provided that Employee continues to be employed by the Company on such date (ii)
six months after termination of Employees employment hereunder in the event that
employee resigns on or before December 31, 2000 or (iii) a Change of Control as
defined in paragraph 3.7.2, Employee shall not, directly or indirectly, engage
in, render services of any nature to, provide financial support for, plan for,
be connected in any manner with or organize any business which is competitive
with or similar to the business of the Company if such other business has
operations or planned operations anywhere in the world where the Company or its
subsidiaries has or plans to have operations, by becoming an owner, officer,
director, shareholder (except for less than 2% of a publicly traded stock for
investment purposes only), partner, creditor, associate, employee, agent,
representative or consultant or serve in any other capacity in connection with
such other business without the Company's prior written consent. Each of the
parties hereto acknowledges that the restrictions, prohibitions and other
provisions hereof are reasonable, fair and equitable in scope, terms and
duration, are necessary to protect the legitimate business interests of the
Company given the current scope of the Companies business and Employees
expertise, and are a material inducement to the Company to enter into this
Agreement. The provisions of this section shall survive the termination of this
Agreement.

        5.2 Nonsolicitation. During the term of Employee's employment and
continuing for one year thereafter, Employee shall not, directly or indirectly;
(i) hire or solicit any employee, consultant, sales representative, sales agent
or advisor of the Company or any of its affiliates or encourage any such
employee, consultant, sales representative, sales agent or advisor to leave such
employment for any business whether or not a competitor of the Company; or (ii)
solicit or divert or attempt to divert to any competitor any business of the
Company or solicit or divert or attempt to divert any customers or suppliers of
the Company.

        5.3 Confidentiality/Trade Secrets. Since the work for which Employee is
employed and upon which Employee will be engaged will include knowledge and
information of a confidential nature to, and the secret property of, the
Company, or persons, firms, entities or corporations with whom the Company is
affiliated, or customers of the Company or its affiliates (including but not
limited to inventions, improvements, designs systems, ideas, financial and
technical data, trade secrets, business plans, financing systems and techniques,
sales techniques and approaches, and customer and supplier information),
Employee shall receive all knowledge and information in confidence, and shall
not at any time (during or after employment with the Company) except as required
in the conduct of the Company business, or authorized in writing


                                      -5-

<PAGE>   6

                                                                                
by the Company, publish, disclose or use or authorize anyone else to publish,
disclose or make use of any such information or knowledge unless and until such
information or knowledge shall have ceased to be secret or confidential as
evidenced by general public knowledge. In the event that Employee's employment
with the Company shall cease, Employee authorizes the Company to send a copy of
this section in its sole discretion, to any and all future employers which
Employee may have AND TO ANY AND ALL PERSONS, firms, entities and corporations
with whom Employee may become affiliated in a business or commercial enterprise,
and inform any and all such employers, persons, firms, entities or corporations
that the Company intends to exercise its legal rights should Employee breach the
terms of this Agreement or should another party induce a breach by Employee. The
provisions of this section shall survive the termination of this Agreement.

        5.4 Property. All results and proceeds of Employee's services hereunder,
and all inventions, improvements, systems, designs, ideas, business plans, sales
techniques and approaches which Employee made or conceived or which Employee may
make or conceive, at any time after the commencement of Employee's employment
with the Company and until the termination thereof, either individually or
jointly with others, or which Employee utilizes in carrying out Employee's
duties hereunder (hereinafter "Property"), shall be the exclusive property of
the Company as a "work for hire", and Employee hereby assigns and agrees to
assign to the Company all of Employee's rights in and to all such Property, and
to all copyrights (statutory and common law), covering any or all of the
Property. The provisions of this section shall survive the termination of this
Agreement.

        5.5 Injunction, Confidential Materials. Employee hereby consents and
agrees that for any violation of any of the provisions of Section 5.3
(Confidentiality/Trade Secrets), or Section 5.4 (Property) of this Agreement, a
restraining order and/or an injunction may issue against Employee in addition to
any other rights the Company may have at law or in equity. Employee agrees that
records containing secret or confidential knowledge and information prepared by
Employee or which come into Employee's possession during Employee's employment
by the Company, are and remain the property of the Company, and if and when
Employee's employment with the Company terminates, all such records and all
copies thereof shall be left with the Company.

        5.6 Remedies. Employee acknowledges and agrees that the services to be
rendered by Employee hereunder and the rights and privileges herein granted to
the Company are by reason of Employee's skill and experience, of a special,
unique, unusual, extraordinary and intellectual character which gives them a
peculiar value, the loss of which cannot reasonably or adequately be compensated
in damages in an action at law, and that a breach by Employee of any of the
provisions contained herein, including, without limitation, the provisions of
Section 5.1 (Noncompetition), will cause the Company irreparable injury and
damage. Employee expressly agrees that the Company shall be entitled as a matter
of right to injunctive or other equitable relief to prevent a breach of this
Agreement by Employee. Resort to such equitable relief, however, shall not be
construed as a waiver of any other rights or remedies which the Company

                                      -6-

<PAGE>   7

may have for damages or otherwise hereunder. Employee specifically agrees that
the Company may recover by appropriate action the amount of the actual damage
caused the Company by any failure, refusal or neglect of Employee to keep and
perform all of the agreements and warranties herein contained.

        5.7 Prior Employment. Employee represents and warrants that he is not a
party to any other employment, non-competition or other agreement or restriction
which could interfere with his employment with the Company or his or the
Company's rights and obligations hereunder; and that his acceptance of
employment with the Company and the performance of his duties hereunder will not
breach the provisions of any contract, agreement, or understanding to which he
is party or any duty owed by him to any other person.

        5.8 Severability. The invalidity or unenforceability of any particular
provision or part of any provision of this Agreement shall not affect the other
provisions or parts hereof.

        5.9 Assignment. This Agreement shall not be assignable by Employee, and
shall be assignable by the Company only to any person or entity which may become
a successor in interest (by purchase of assets or stock, or by merger, or
otherwise) to the Company. Subject to the foregoing, this Agreement and the
rights and obligations set forth herein shall inure to the benefit of, and be
binding upon, the parties hereto and each of their respective permitted
successors, assigns, heirs, executors and administrators.

        5.10 Notices. All notices hereunder shall be in writing and shall be
sufficiently given if hand-delivered, sent by documented overnight delivery
service or registered or certified mail, postage prepaid, return receipt
requested or by facsimile (confirmed by U.S. mail), confirmation received,
addressed as set forth below or to such other person and/or at such other
address as may be furnished in writing by any party hereto to the other. Any
such notice shall be deemed to have been given as of the date received, in the
case of personal delivery, or on the date shown on the receipt of confirmation
therefor, in all other cases. Any and all service of process and any other
notice in any action, suite or proceeding shall be effective against any party
if given as provided in this Agreement; provided that nothing herein shall be
deemed to affect the right of any party to serve process in any other manner
permitted by law.

               (a) If to the Company:

                        IXC Communications, Inc.
                        1122 South Capital of Texas Highway
                        Austin, TX 78746

                        Attention: Contract Administration
                        Tel: 512-427-4152
                        Fax: 512-328-7902


                                       -7-

<PAGE>   8

               (b) If to Employee:

                       Mr. Michael W. Vent
                       5116 Jenkins Cove
                       Austin, TX

                       Tel: 512-346-2606
                       Fax: 512-346-9456

        5.11 Entire Agreement and Modification. This Agreement constitutes the
entire agreement between the parties hereto with respect to the matters
contemplated herein and supersedes all prior agreements and understandings with
respect thereto. Any amendment, modification or waiver of this Agreement shall
not be effective unless in writing. Neither the failure nor any delay on the
part of any party to exercise any right, remedy, power or privilege hereunder
shall operate as a waiver thereof, nor shall any single or partial exercise of
any right, remedy, power or privilege preclude any other or further exercise of
the same or any other right, remedy, power or privilege with respect to any
occurrence be construed as a waiver of any right, remedy, power or privilege
with respect to any other occurrence.

        5.12 Binding Arbitration. The parties hereby consent to the resolution
by binding arbitration of all claims or controversies in any way arising out of,
relating to or associated with this Agreement. Any arbitration required by this
Agreement shall be conducted before a single arbitrator in Austin, Texas in
accordance with the commercial arbitration rules of the American Arbitration
Association then existing, and any award, order or judgment pursuant to such
arbitration may be enforced in any court of competent jurisdiction. The
arbitrator shall apply rules of Texas law and the parties expressly waive any
claim or right to an award of punitive damages. All such arbitration proceedings
shall be conducted on a confidential basis. Notwithstanding the foregoing,
either party may seek injunctive or other equitable relief in a court of law
without proceeding through arbitration.

        5.13 Amendment. This Agreement may only be amended by an agreement in
writing signed by the Company and Employee.

        5.14 Governing Law. This Agreement is made pursuant to, and shall be
construed and enforce in accordance with, the internal laws of the State of
Texas, without giving effect to otherwise applicable principles of law.

        5.15 Headings; Counterparts. The headings of paragraphs in this
Agreement are for convenience only and shall not affect its interpretation. This
Agreement may be executed in two or more counterparts, each of which shall be
deemed to be an original an all of which, when taken together, shall be deemed
to constitute but one and the same Agreement.

                                      -8-

<PAGE>   9

        5.16 Further Assurances. Each of the parties hereto shall execute such
further instruments and take such other actions as any other party shall
reasonably request in order to effectuate the purposes of this Agreement.

        IN WITNESS WHEREOF, the parties have executed this Agreement as of the
date first above written.

                                              IXC Communications Inc.

                                              By: [SIG]
                                                  ------------------------------
                                                  Name:
                                                  Title:

                                              Employee:

                                              /s/ Michael W. Vent
                                              ----------------------------------
                                              Michael W. Vent


                                      -9-

<PAGE>   1
                                                                    EXHIBIT 21.1

                         SUBSIDIARIES OF THE REGISTRANT

<TABLE>
<CAPTION>
                                                     STATE OR OTHER            OTHER NAMES
                                                     JURISDICTION OF           UNDER WHICH
                                                    INCORPORATION OR         SUBSIDIARY DOES
        NAME OF SUBSIDIARY                            ORGANIZATION               BUSINESS                  TYPE OF ENTITY
        ------------------                          -----------------        ---------------          --------------------------
<S>                                                 <C>                      <C>                      <C>
IXC Communications Services, Inc.                       Delaware                   None               Corporation
IXC Business Services, LLC                              Delaware                   None               Limited Liability Company
IXC International, Inc.                                 Delaware                   None               Corporation
IXC Internet Services, Inc.                             Delaware                   None               Corporation
Applied Theory, Inc.                                    New York                   None               Corporation
Storm Telecommunications, Ltd.                          United Kingdom             None               Corporation
The Data Place, Inc.                                    Delaware                   None               Corporation
PSINet, Inc.                                            New York                   None               Corporation
IXC Leasing, LLC                                        Delaware                   None               Limited Liability Company
IXC Communications Services Europe Limited.             United Kingdom             None               Corporation
NTR.NET                                                 Kentucky                   None               Corporation
Telecom One, Inc.                                       Delaware                   None               Corporation
Network Evolutions, Inc.                                Virginia                   None               Corporation
Delaware Capital Provisioning, Inc.                     Delaware                   None               Corporation
Eclipse Telecommunications, Inc.                        Delaware                   None               Corporation
MSM Associates, Limited Partnership                     Delaware                   None               Partnership
Mutual Signal Corp.                                     New York                   None               Corporation
Mutual Signal Corporation of Michigan                   New York                   None               Corporation
Mutual Signal Holding Corporation                       Delaware                   None               Corporation
Atlantic States Microwave Transmission Company          Nevada                     None               Corporation
Central States Microwave Transmission Company           Ohio                       None               Corporation
Telcom Engineering, Inc.                                Texas                      None               Corporation
Tower Communication Systems Corp.                       Ohio                       None               Corporation
West Texas Microwave Company                            Texas                      None               Corporation
Western States Microwave Transmission Company           Nevada                     None               Corporation
Rio Grande Transmission, Inc.                           Delaware                   None               Corporation
Grupo Marca-Tel S.A. de C.V.                            Mexico                     None               Corporation
Progress International, L.L.C.                          Texas                      None               Limited Liability Company
UniDial Communications Services, LLC                    Kentucky                   None               Limited Liability Company
</TABLE>


<PAGE>   1
                                                                    EXHIBIT 23.1


                         CONSENT OF INDEPENDENT AUDITORS

      We consent to the incorporation by reference in the Registration Statement
on Form S-8 (File No. 333-11409), Registration Statement on Form S-8 (File No.
333-18467), Registration Statement on Form S-8 (File No. 333-49817),
Registration Statement on Form S-8 (File No. 333-66361), Registration Statement
on Form S-8 (File No. 333-66367), Amendment No. 1 to Registration Statement on
Form S-3 (File No. 333-33421) and Amendment No. 1 to Registration Statement on
Form S-3 (File No. 333-52433) of our report dated February 4, 1999, with respect
to the consolidated financial statements of IXC Communications, Inc. included in
the Form 10-K for the year ended December 31, 1998.

                                       /s/  ERNST & YOUNG LLP

Austin, Texas
     March 26, 1999


<PAGE>   1
                                                                    EXHIBIT 23.2


                    CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS

      As independent public accountants, we hereby consent to the incorporation
by reference of our report included in this Form 10-K, into IXC Communications,
Inc.'s previously filed registration statements on Form S-3 (File No.
333-33421), Form S-3 (File No. 333-52433), Form S-8 (File No. 333-11409), Form
S-8 (File No. 333-18467), Form S-8 (File No. 333-49817), Form S-8 (File No.
333-66361) and Form S-8 (File No. 333-66367).

                                       /s/  ARTHUR ANDERSEN LLP

Jackson, Mississippi
   March 26, 1999

<PAGE>   1
                                                                    EXHIBIT 23.3


                          INDEPENDENT AUDITORS' CONSENT

      We consent to the incorporation by reference in Registration Statement on
Form S-8 (File No. 333-11409), Registration Statement on Form S-8 (File No.
333-18467), Registration Statement on Form S-8 (File No. 333-49817),
Registration Statement on Form S-8 (File No. 333-66361), Registration Statement
on Form S-8 (File No. 333-66367), Amendment No. 1 to Registration Statement on
Form S-3 (File No. 333-33421) and Amendment No. 1 to Registration Statement on
Form S-3 (File No. 333-52433) of our report on National Teleservice, Inc. dated
July 28, 1997, appearing in this Form 10-K of IXC Communications, Inc. dated
March 26, 1999.

                                       /s/  DELOITTE & TOUCHE LLP

Minneapolis, Minnesota
   March 26, 1999

<PAGE>   1

                                                                    EXHIBIT 23.4

                   CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS

     As independent public accountants, we hereby consent to the incorporation
by reference of our report included in this Form 10-K into IXC Communications,
Inc.'s previously filed registration statements on Form S-3 (File No.
333-33421), Form S-3 (File No. 333-52433), Form S-8 (File No. 333-11409), Form
S-8 (File No. 333-18467), Form S-8 (File No. 333-49817), Form S-8 (File No.
333-66351) and Form S-8 (File No. 333-66367).

                                       /s/ Arthur Andersen LLP

Monterrey, N.L.
March 26, 1999.

<PAGE>   1

                                                                    EXHIBIT 23.5

To the Shareholders of Grupo Marca Tel, S.A. de C.V.:

We have audited the accompanying consolidated balance sheets of GRUPO MARCA 
TEL, S.A. DE C.V. and subsidiaries ("the Company"), stated in U.S. dollars, as 
of December 31, 1998 and 1997, and the related consolidated statements of 
income, statements of changes in shareholders' equity and cash flows for the 
years then ended. 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 the auditing standards generally 
accepted in the United States. 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 Grupo Marca Tel, S.A. de C.V. 
and subsidiaries as of December 31, 1998 and 1997, and the results of their 
operations and their cash flows for the years then ended, in accordance with 
the accounting principles generally accepted in the United States.

The accompanying financial statements have been prepared assuming that the 
Company will continue as a going concern. As described in Note 9, the Company 
has incurred significant operating losses during the years ended December 31, 
1998 and 1997, current liabilities exceed current assets by $27,858,588 and it 
has accumulated losses of $42,717,907 at December 31, 1998, representing a 
reduction of more than two thirds of its capital stock, which may result in a 
situation of dissolution according to the Mexican General Law of Mercantile 
Organizations. This action could be requested by an interested party through a 
judicial order, however Siemens Credit Corporation, the creditor representing 
approximately 77% of the company's total liabilities has expressed interest in 
financially supporting the company by renegotiating the debt as is described in 
Note 5. Additionally, Siemens Credit Corporation participates in the capital 
stock in the company with neutral shares (Series "L"). Rights of Series "L" 
shares are described in Note 7. Realization of the carrying amounts of the 
company's assets and the classification of its liabilities are dependent on the 
success of future operations.


                                       /s/ Arthur Andersen

Monterrey, N.L.
February 28, 1999



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<ARTICLE> 5
<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>                                         264,826
<SECURITIES>                                   219,880
<RECEIVABLES>                                  107,558
<ALLOWANCES>                                    16,664
<INVENTORY>                                          0
<CURRENT-ASSETS>                                10,965
<PP&E>                                       1,193,655
<DEPRECIATION>                                 209,979
<TOTAL-ASSETS>                               1,748,237
<CURRENT-LIABILITIES>                          196,666
<BONDS>                                        450,815
                          447,858
                                          2
<COMMON>                                           364
<OTHER-SE>                                    (72,912)
<TOTAL-LIABILITY-AND-EQUITY>                 1,748,237
<SALES>                                        668,568
<TOTAL-REVENUES>                               668,568
<CGS>                                          433,300
<TOTAL-COSTS>                                  699,377
<OTHER-EXPENSES>                                32,760
<LOSS-PROVISION>                                55,113
<INTEREST-EXPENSE>                            (31,683)
<INCOME-PRETAX>                               (80,913)
<INCOME-TAX>                                  (13,925)
<INCOME-CONTINUING>                           (95,504)
<DISCONTINUED>                                       0
<EXTRAORDINARY>                               (66,952)
<CHANGES>                                            0
<NET-INCOME>                                 (162,456)
<EPS-PRIMARY>                                   (6.15)
<EPS-DILUTED>                                   (6.15)
        

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