INTER TEL INC
S-3/A, 1997-11-21
TELEPHONE & TELEGRAPH APPARATUS
Previous: SEARCH FINANCIAL SERVICES INC, 8-K, 1997-11-21
Next: UNIT INSTRUMENTS INC, SC 13G/A, 1997-11-21



       As filed with the Securities and Exchange Commission on November 20, 1997
                                                      Registration No. 333-39221
================================================================================
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                                 ---------------
                               AMENDMENT NO. 1 TO

                                    FORM S-3
                             REGISTRATION STATEMENT
                                      Under
                           THE SECURITIES ACT OF 1933
                                 ---------------
                             INTER-TEL, INCORPORATED
             (Exact name of Registrant as specified in its charter)

          Arizona                                           86-0220994
     --------------------                             ---------------------
(State or other jurisdiction of                         (I.R.S. Employer
 of incorporation or organization)                      Identification No.)


                        120 North 44th Street, Suite 200
                           Phoenix, Arizona 85304-1822
                                 (602) 302-8900
   (Address, including zip code and telephone number, including area code, of
                    Registrant's principal executive offices)
                                 ---------------
                                STEVEN G. MIHAYLO
                       Chairman of the Board of Directors
                           and Chief Executive Officer
                             Inter-Tel, Incorporated
                        120 North 44th Street, Suite 200
                           Phoenix, Arizona 85034-1822
                                 (602) 302-8900
 (Name, address, including zip code and telephone number, including area code,
                              of agent for service)
                                 ---------------
                                   Copies to:

  Jeffrey D. Saper, Esq.                            Stanton D. Wong, Esq.
 Patrick J. Schultheis, Esq.                        Karen A. Dempsey, Esq.
    Robert G. Day, Esq.                           Shannon M. Hernandez, Esq.
    Caine T. Moss, Esq.                          Pillsbury Madison & Sutro LLP
Wilson Sonsini Goodrich & Rosati                        P.O. Box 7880
  Professional Corporation                       San Francisco, California 94120
     650 Page Mill Road                                 (415) 983-1000
Palo Alto, California 94304-1050
      (650) 493-9300

                                 ---------------
        Approximate date of commencement of proposed sale to the public:
As soon as practicable after the effective date of this Registration Statement.
                                 ---------------

     If the only  securities  being  registered  on this Form are being  offered
pursuant to dividend or interest  reinvestment plans, please check the following
box. [ ]

     If any of the securities being registered on this Form are to be offered on
a delayed or continuous  basis  pursuant to Rule 415 under the Securities Act of
1933, other than securities offered only in connection with dividend or interest
reinvestment plans, check the following box. [ ]

     If this Form is filed to  register  additional  securities  for an offering
pursuant to Rule 462(b) under the Securities Act, please check the following box
and list  the  Securities  Act  registration  statement  number  of the  earlier
effective registration statement for the same offering. [ ]

     If this Form is a  post-effective  amendment  filed pursuant to Rule 462(c)
under the  Securities  Act,  check the following box and list the Securities Act
registration  statement number of the earlier effective  registration  statement
for the same offering. [ ]

     If delivery of the  prospectus is expected to be made pursuant to Rule 434,
please check the following box. [ ]

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

     The Registrant  hereby amends this  Registration  Statement on such date or
dates as may be necessary to delay its effective date until the Registrant shall
file a further  amendment  which  specifically  states  that  this  Registration
Statement shall  thereafter  become effective in accordance with Section 8(a) of
the  Securities  Act of 1933, as amended,  or until the  Registration  Statement
shall become  effective on such date as the Commission,  acting pursuant to said
Section 8(a), may determine.
================================================================================

<PAGE>


Information   contained  herein  is  subject  to  completion  or  amendment.   A
registration  statement  relating  to these  securities  has been filed with the
Securuties  and Exchange  Commission.  These  securities may not be sold nor may
offers to buy be accepted prior to the time the registration  statement  becomes
effective.  This  prospectus  shall  not  constitute  an  offer  to  sell or the
solicitation of an offer to buy nor shall there be any sale of these  securities
in any State in which such offer,  solicitation  or sale would be unlawful prior
to registration or qualification under the securities laws of any such State.

                 SUBJECT TO COMPLETION, DATED NOVEMBER 20, 1997


                                3,070,000 Shares


                                [INTER-TEL LOGO]


                                  Common Stock


     Of the 3,070,000  shares of Common Stock offered hereby,  3,000,000  shares
are being sold by Inter-Tel,  Incorporated  ("Inter-Tel"  or the  "Company") and
70,000 shares are being sold by the Selling  Shareholders.  The Company will not
receive any of the proceeds from the sale of shares by the Selling Shareholders.
The  Company's  Common Stock is traded on the Nasdaq  National  Market under the
symbol INTL.  On October 29, 1997,  the last  reported  sale price of the Common
Stock on the Nasdaq National  Market was $24.375 per share.  See "Price Range of
Common Stock."

     This offering involves a high degree of risk. See "Risk Factors" commencing
on page 5 for a  discussion  of certain  factors  that should be  considered  by
prospective purchasers of the Common Stock offered hereby.

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

    THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES
     AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE
      SECURITIES AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION
          PASSED UPON THE ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY
              REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.

<TABLE>
<CAPTION>
==============================================================================================

                                    Price to   Underwriting  Proceeds to   Proceeds to Selling
                                     Public    Discount(1)   Company(2)       Shareholders
- -----------------------------------------------------------------------------------------------
<S>                                  <C>          <C>          <C>          <C>
Per Share ........................     $            $            $            $
Total(3)  ........................   $            $            $            $
==============================================================================================

<FN>
(1)  See  "Underwriting"  for information  concerning  indemnification  of the Underwriters and
     other matters.


(2)  Before deducting expenses payable by the Company estimated at $700,000.

(3)  The Selling  Shareholders  have granted to the Underwriters a 30-day option to purchase up
     to 460,500 additional shares of Common Stock solely to cover  over-allotments,  if any. If
     the  Underwriters   exercise  this  option  in  full,  the  Price  to  Public  will  total
     $________________, the Underwriting Discount will total $________________ and the Proceeds
     to Selling Shareholders will total $________________. See "Underwriting."
</FN>
</TABLE>


     The shares of Common  Stock are offered by the several  Underwriters  named
herein,  subject to receipt and acceptance by them and subject to their right to
reject  any  order in whole or in part.  It is  expected  that  delivery  of the
certificates  representing  such shares will be made against payment therefor at
the   office   of    NationsBanc    Montgomery    Securities,    Inc.    on   or
about________________, 1997.

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

NATIONSBANC MONTGOMERY SECURITIES, INC.

                          DONALDSON, LUFKIN & JENRETTE
                             SECURITIES CORPORATION
                                                       JEFFERIES & COMPANY, INC.


                             ________________, 1997

<PAGE>


                              AVAILABLE INFORMATION

     The Company is subject to the  information  requirements  of the Securities
Exchange  Act of 1934,  as  amended  (the  "Exchange  Act"),  and in  accordance
therewith files reports,  proxy and information statements and other information
with the Securities and Exchange Commission (the "Commission").  Reports,  proxy
statements  and other  information  may be inspected  and copied (at  prescribed
rates) at the public reference  facilities  maintained by the Commission at Room
1024, 450 Fifth Street,  N.W.,  Washington,  D.C. 20549, and at the Commission's
regional offices located at 75 Park Place,  14th Floor, New York, New York 10047
and 500 West Madison Street, Suite 1400, Chicago, Illinois 60661. Copies of such
material also can be obtained from the Public Reference Branch of the Commission
at 450 Fifth Street,  N.W.,  Washington,  D.C. 20549, at prescribed  rates.  The
Commission maintains a World Wide Web site at  http://www.sec.gov  that contains
reports,  proxy  and  information  statements  and other  information  regarding
registrants that are filed electronically with the Commission.

     The Company has filed with the Commission a registration  statement on Form
S-3 (herein,  together  with all  amendments  and  exhibits,  referred to as the
"Registration  Statement")  under the  Securities  Act of 1933,  as amended (the
"Securities  Act").  This Prospectus does not contain all of the information set
forth in the  Registration  Statement,  certain  parts of which are  omitted  in
accordance  with the  rules  and  regulations  of the  Commission.  For  further
information, reference is hereby made to the Registration Statement.


                      INFORMATION INCORPORATED BY REFERENCE

     The  following  documents  filed  with the  Commission  (File No.  0-10211)
pursuant to the Exchange Act are incorporated herein by reference:

     1.  The  Company's  Annual  Report on Form 10-K for the  fiscal  year ended
         December 31, 1996.

     2.  The  Company's  Quarterly  Reports on Form 10-Q for the quarters  ended
         March 31, June 30 and September 30, 1997.

     3.  The  description  of  the  Company's  Common  Stock  contained  in  its
         Registration  Statement  on Form  8-A  filed  with  the  Commission  on
         February 26, 1982 pursuant to Section 12(g) of the Exchange Act.

     4.  All  reports  and other  documents  subsequently  filed by the  Company
         pursuant to Sections  13(a),  13(c),  14 or 15(d) of the  Exchange  Act
         after the date of this  Prospectus and prior to the termination of this
         offering.
      

     Any  statement  incorporated  herein  shall be  deemed  to be  modified  or
superseded  for  purposes  of this  Prospectus  to the extent  that a  statement
contained herein, in a Prospectus  Supplement or in any other subsequently filed
document  which  also is or is deemed to be  incorporated  by  reference  herein
modifies or supersedes such  statement.  Any statement so modified or superseded
shall not be deemed,  except as so modified or superseded,  to constitute a part
of the Registration Statement or this Prospectus.

     The Company  will provide  without  charge to each  person,  including  any
beneficial owner, to whom this Prospectus is delivered, upon the written or oral
request  of  such  person,  a copy of any and  all of the  documents  which  are
incorporated herein by reference (other than exhibits to such documents,  unless
such exhibits are  specifically  incorporated  by reference into such document).
Requests for such documents should be directed to Inter-Tel,  Incorporated,  120
North 44th Street, Suite 200, Phoenix,  Arizona 85034-1822,  or by calling (602)
302-8900.

                                   -----------

     CERTAIN PERSONS  PARTICIPATING  IN THIS OFFERING MAY ENGAGE IN TRANSACTIONS
THAT  STABILIZE,  MAINTAIN,  OR  OTHERWISE  AFFECT THE PRICE OF THE COMMON STOCK
OFFERED  HEREBY.  SUCH  TRANSACTIONS  MAY INCLUDE  STABILIZING,  THE PURCHASE OF
COMMON STOCK TO COVER  SYNDICATE  SHORT  POSITIONS AND THE IMPOSITION OF PENALTY
BIDS. FOR A DESCRIPTION OF THESE ACTIVITIES, SEE "UNDERWRITING."

     IN CONNECTION WITH THIS OFFERING,  CERTAIN  UNDERWRITERS  AND SELLING GROUP
MEMBERS (IF ANY) MAY ENGAGE IN PASSIVE MARKET MAKING  TRANSACTIONS IN THE COMMON
STOCK ON THE NASDAQ NATIONAL MARKET IN ACCORDANCE WITH RULE 103 OF REGULATION M.
SEE "UNDERWRITING."

                                   -----------

     "Inter-Tel,"   "AXXESS,"  "AXXESSORY  Talk,"  "AXXESSORY  ACD,"  "AXXESSORY
Connect," "Inter-Tel.net,"  "Visual  Mail" and "Vocal'Net" are trademarks of the
     Company. This Prospectus also includes trademarks of other companies.

                                        2

<PAGE>


                               PROSPECTUS SUMMARY

     The  following  summary is qualified  in its entirety by the more  detailed
information,  including "Risk Factors" and consolidated financial statements and
notes thereto,  appearing  elsewhere in, or incorporated by reference into, this
Prospectus. In this Prospectus,  the words "expects," "anticipates," "believes,"
"intends," "will" and similar expressions identify  forward-looking  statements,
which speak only as of the date  hereof,  and are  subject to certain  risks and
uncertainties.  The  Company's  actual  results may differ  materially  from the
results  discussed in such  forward-looking  statements.  Factors that may cause
such a  difference  include,  but are not limited to,  those  discussed in "Risk
Factors." Unless otherwise  indicated,  (i) all share and per share data in this
Prospectus have been adjusted to give effect to the Company's  two-for-one stock
split,  effected in the form of a 100% stock  dividend,  paid to shareholders on
October 21, 1997 (the "Stock  Split"),  (ii) the  information  contained in this
Prospectus  assumes no exercise of the Underwriters'  over-allotment  option and
(iii)  references in this  Prospectus to  "Inter-Tel"and  the "Company" refer to
Inter-Tel, Incorporated and its subsidiaries.


                                  The Company

     Inter-Tel  is a single point of contact,  full service  provider of digital
business  telephone  systems,   Internet  protocol  ("IP")  telephony  products,
computer-telephone  integration ("CTI") applications,  voice processing software
and long distance calling  services.  Inter-Tel's  products and services include
the AXXESS and Inter-Tel Axxent digital business  communication  platforms,  the
AXXESSORY Talk voice processing platform, the Vocal'Net IP telephony gateway and
the  Inter-Tel.net  private IP  telephony  network.  The Company  also  provides
maintenance, leasing and support services for its products. The Company believes
that it is a  leading  supplier  of  small to  medium  size  business  telephone
systems.

     The  Company's  strategy  is  to  offer  its  customers,  through  a  broad
distribution network, a single source for their full range of telecommunications
requirements and to provide its targeted market segment advanced technologies on
a  cost-effective  basis.  The Company  believes  that its  customers  prefer to
purchase telecommunications  equipment and services from a single source because
of the  convenience,  consistency of service,  ease of upgrade and confidence in
the performance of integrated systems and services.  The Company has developed a
distribution network of direct sales offices,  dealers and value added resellers
("VARs")   which  sell  the   Company's   products  to  small  and  medium  size
organizations and to divisions or departments of larger  organizations,  such as
Fortune 500 companies,  large service  organizations and governmental  agencies.
The Company has 29 direct sales offices in the United States,  one in the United
Kingdom, one in Japan and a network of hundreds of dealers and VARs who purchase
directly from the Company.

     In  September  1997,  the Company  released  Vocal'Net,  a  stand-alone  IP
telephony  gateway  that can be used with the  AXXESS  system or  virtually  any
business  telephone  system  equipped with T-1/E-1,  ISDN or analog  capability.
Vocal'Net provides a gateway for bridging traditional circuit switched telephone
networks and IP packet  switched  networks  such as the  Internet and  corporate
intranets.   With  Vocal'Net,   users  can  conduct  real-time,   two-way  voice
communications  over IP  networks  and  realize  potential  savings  compared to
standard  long  distance  phone  service.   In  addition  to  targeting  private
enterprises  for their  independent  use of the Vocal'Net  gateway,  the Company
seeks to enter into  relationships  with Internet  service  providers  ("ISPs"),
cable  television  companies,  telephone  service  providers and companies  with
extensive  IP data  networks  to  build  IP  telephony  networks.  Inter-Tel  is
developing  and  implementing  Inter-Tel.net,  a private IP network  designed to
carry long distance  telephone traffic.  To date, the Inter-Tel.net  network has
established points of presence in the San Francisco Bay Area, Washington,  D.C.,
Chicago, New York, Phoenix and Los Angeles.

     Inter-Tel was founded in 1969 and is incorporated in Arizona. The Company's
principal  offices are  located at 120 North 44th  Street,  Suite 200,  Phoenix,
Arizona 85034-1822, and its telephone number at that address is (602) 302-8900.

                                        3

<PAGE>


                                  The Offering

Common Stock offered by the Company  ..................  3,000,000 shares
Common Stock offered by the Selling Shareholders ......     70,000 shares
Common Stock to be outstanding after the Offering ..... 26,553,942 shares(1)
Use of Proceeds    .................................... To  develop  and  expand
                                                        Inter-Tel.net   and  for
                                                        potential  acquisitions,
                                                        strategic     alliances,
                                                        working    capital   and
                                                        general        corporate
                                                        purposes
Nasdaq National Market Symbol  ........................ INTL

<TABLE>

                                                 Summary Consolidated Financial Data
                                                (in thousands, except per share data)
<CAPTION>
                                                                                                                 Nine Months Ended
                                                                   Year Ended December 31,                          September 30,
                                                 ------------------------------------------------------------    -------------------
                                                   1992       1993      1994           1995          1996         1996        1997
                                                 --------   --------   --------      ----------    ----------    --------   --------
<S>                                              <C>        <C>        <C>           <C>           <C>           <C>        <C>     
Statement of Operations Data:
 Net sales ....................................  $ 88,120   $103,373   $123,878      $150,533      $185,884      $133,384   $162,061
 Gross profit .................................    34,089     40,285     49,845        62,837        80,918        58,036     72,870
 Operating income .............................     5,121      6,489      8,806        12,180(2)     13,409(3)     12,870     15,983
 Net income ...................................  $  3,164   $  3,941   $  5,940      $  8,499(2)   $  9,042(3)   $  8,372   $ 10,072
                                                 ========   ========   ========      ========      ========      ========   ========
 Net income per share(4):
  Primary .....................................  $   0.18   $   0.22   $   0.27      $   0.35(2)   $   0.34(3)   $   0.31   $   0.39
                                                 ========   ========   ========      ========      ========      ========   ========
  Fully diluted ...............................  $   0.18   $   0.22   $   0.27      $   0.35(2)   $   0.34(3)   $   0.31   $   0.37
                                                 ========   ========   ========      ========      ========      ========   ========
 Weighted average shares and share
  equivalents(4):
  Primary .....................................    17,320     18,060     21,800        24,002        26,790        26,770     26,035
  Fully diluted ...............................    17,402     18,132     21,800        24,048        26,794        26,796     27,155
</TABLE>


                                             September 30, 1997
                                         --------------------------
                                           Actual    As Adjusted(5)
                                         ---------- ---------------
Balance Sheet Data:
 Working capital ..................       $ 62,206       $130,975
 Total assets .....................        125,282        194,051
 Shareholders' equity .............         79,543        148,312

- ------------
(1)  Based upon shares  outstanding  as of  September  30,  1997.  Excludes  (i)
     3,018,150  shares reserved for issuance upon exercise of outstanding  stock
     options as of  September  30,  1997 and (ii)  1,994,776  additional  shares
     reserved for future  issuance  pursuant to the  Company's  stock option and
     employee stock purchase plans.

(2)  Operating  income in the year ended  December  31, 1995  includes a special
     charge of  $1,315,000,  which reduced net income by $815,000,  or $0.03 per
     share after tax. This special  charge  reflects the costs  associated  with
     integrating  the operations of American  Telcom Corp. of Georgia,  Inc. and
     Access  West,  Inc.  Without this special  charge,  the Company  would have
     reported operating income of approximately  $13.5 million and net income of
     approximately $9.3 million, or $0.39 per share for such period.

(3)  Operating  income in the year ended  December  31, 1996  includes a special
     charge of $4,542,000,  which reduced net income by $2,725,000, or $0.10 per
     share after tax. This special  charge  reflects the decision by the Company
     to replace its MIS software. Without this special charge, the Company would
     have  reported  operating  income of  approximately  $18.0  million and net
     income of approximately $11.8 million, or $0.44 per share for such period.

(4)  Financial  data for all  periods  have been  restated  to reflect the Stock
     Split.

(5)  Adjusted to give  effect to the sale of  3,000,000  shares of Common  Stock
     offered  by the  Company  hereby at an  assumed  public  offering  price of
     $24.375 per share and the receipt of the estimated net proceeds  therefrom.
     See "Use of Proceeds" and "Capitalization."

                                        4

<PAGE>


                                  RISK FACTORS

     This Prospectus contains forward-looking  statements that involve risks and
uncertainties.  The statements  contained in this Prospectus that are not purely
historical are  forward-looking  statements within the meaning of Section 27A of
the Securities Act of 1933, as amended,  including without limitation statements
regarding  the  Company's  expectations,   beliefs,   intentions  or  strategies
regarding the future. All  forward-looking  statements included in this document
are based on  information  available to the Company on the date hereof,  and the
Company assumes no obligation to update any such forward-looking statements. The
cautionary statements made in this Prospectus should be read as being applicable
to  all  related  forward-looking   statements  wherever  they  appear  in  this
Prospectus.  The Company's  actual  results could differ  materially  from those
anticipated in these forward-looking  statements as a result of certain factors,
including  those set forth in the  following  risk factors and elsewhere in this
Prospectus.  In evaluating the Company's business,  prospective investors should
consider  carefully the following  factors in addition to the other  information
set forth in this Prospectus.


Rapid Technological Change; Dependence On Recently Introduced Products

     The  market  for  the   Company's   software,   products  and  services  is
characterized  by rapid  technological  change  and  continuing  demand  for new
products, features and applications.  Current competitors or new market entrants
may develop new products or product  features  that could  adversely  affect the
competitive  position  of  the  Company's  products.   Accordingly,  the  timely
introduction   of  new   products   and  product   features,   as  well  as  new
telecommunications  applications,  will be key factors in the  Company's  future
success.

     During the past twelve months,  the Company introduced unified messaging on
its AXXESSORY Talk platform,  developed a number of enhancements to its existing
AXXESS and AXXESSORY  Talk platforms and  introduced  Vocal'Net.  The Company is
also  currently in the later stages of  developing  the AXXESS 5.0  platform,  a
significant  software  upgrade and  enhancement to its AXXESS and AXXESSORY Talk
platforms.  The Company's  future success will depend,  in large part,  upon the
timely and  successful  introduction  of the AXXESS 5.0 platform.  The Company's
future  success will also depend upon market  acceptance of the Company's  other
new products or  enhancements,  including  Vocal'Net.  There can be no assurance
that these introduced products and enhancements will be successful. In the event
that the Company were to fail to successfully  introduce new software,  products
or services or  upgrades  to its  existing  systems or products on a regular and
timely basis, demand for the Company's existing software,  products and services
could  decline,  which  could have a material  adverse  effect on the  Company's
business and operating results.  Further, if the markets for IP network products
or CTI  applications  fail to  develop  or grow  more  slowly  than the  Company
anticipates,  or if the Company is unable for any reason to capitalize on either
of these  emerging  market  opportunities,  the  Company's  business,  financial
condition and results of operations could be materially adversely affected.

     Occasionally, new products contain undetected program errors or "bugs" when
released.  Such bugs may result from  defects  contained  in  software  products
offered by the  Company's  suppliers or other third parties that are intended to
be compatible with the Company's products,  over which the Company has little or
no control.  For example,  in the third quarter of 1996, the Company's operating
results were  adversely  impacted by a recall of the  Inter-Tel  Axxent  digital
communication  platform.  Although  the Company  seeks to minimize the number of
bugs in its products by its test procedures and quality control, there can be no
assurance  that  its new  products  will be  error  free  when  introduced.  Any
significant delay in the commercial  introduction of the Company's  products due
to bugs, any design modifications  required to correct bugs or any impairment of
customer  satisfaction as a result of bugs could have a material  adverse effect
on the Company's business and operating results. In addition, new products often
take  several  months  before their  manufacturing  costs  stabilize,  which may
adversely affect operating results for a period of time following introduction.


Developing Market for IP Network Telephony; Uncertain Regulatory Environment

     The market for IP network voice  communications  products has only recently
begun to develop,  is rapidly  evolving and is  characterized  by an  increasing
number of market entrants who have introduced or

                                        5

<PAGE>


developed  products  and  services  for  Internet  or  other  IP  network  voice
communications.  As  is  typical  in  the  case  of  a  new and rapidly evolving
industry,  the  demand  for  and  market  acceptance  of  recently introduced IP
network  products  and  services  are  subject  to a high degree of uncertainty.
There  can  be  no  assurance  that  voice  communications over IP networks will
become  widespread.  Further,  even  if  voice  communications  over IP networks
achieve  broad  market  acceptance, there can be no assurance that the Company's
products, in particular Vocal'Net, will achieve market acceptance.

     The adoption of voice  communications  over IP networks  generally requires
the  acceptance  of  a  new  way  of  exchanging  information.   In  particular,
enterprises that have already invested  substantial  resources in other means of
communicating  information  may be  reluctant or slow to adopt a new approach to
communications.  The lack of  control  over IP network  infrastructure  and each
user's system  configuration may cause users of IP network voice  communications
delays in the  transmission of speech,  loss of voice packets and inferior sound
quality  relative to standard  telephony  networks.  If these  factors cause the
market for IP network voice communications to fail to develop or to develop more
slowly than the Company anticipates, the Company's IP network telephony products
could fail to  achieve  market  acceptance,  which in turn could have a material
adverse  effect on the Company's  business,  financial  condition and results of
operations.

     The  regulatory   environment  for  IP  network  telephony  is  subject  to
substantial  uncertainty.  There can be no assurance that the sale and use of IP
network telephony products such as Vocal'Net will not violate telecommunications
or other  regulations in any of the countries in which such products are or will
be marketed and used. In the United States,  the Company believes that there are
currently few laws or regulations  directly  applicable to voice  communications
over IP  networks  or to access  to, or  commerce  on,  IP  networks  generally.
However,  changes in the  regulatory  environment,  particularly  in regulations
relating  to the  telecommunications  industry,  could have a  material  adverse
effect on the Company's business.  The increased commercial  acceptance of voice
communications  over IP networks could result in  intervention  by  governmental
regulatory  agencies  in the  United  States or  elsewhere  in the  world  under
existing or newly enacted  legislation and in the imposition of fees, charges or
taxes on users and providers of products and services in this area. There can be
no assurance  that such  intervention  or imposition  of fees,  charges or taxes
would not have a material adverse effect upon the acceptance and  attractiveness
of  IP  network  voice  communications.  Moreover,  legislative  proposals  from
international,  federal and state  government  bodies  could  impose  additional
regulations  and  obligations  upon  on-line  service  providers.   The  growing
popularity and use of the Internet has increased  public focus and could lead to
increased pressure on legislatures to impose such regulations. While the Company
is not aware of any other proposed  legislation or regulation directly affecting
its  business,  the  Company  cannot  predict  the  likelihood  that any  future
legislation or regulation will be enacted,  nor the financial impact, if any, of
such resulting  legislation or regulation.  In the future,  the Company may also
develop and introduce  other products with new or additional  telecommunications
capabilities or services,  which could be subject to existing federal government
regulations or result in the imposition of new government regulations, either in
the United States or elsewhere.


Risks  Associated  with  Vocal'Net;  Dependence upon IP Network Infrastructures;
Risk of System Failure; Security Risks

     In September 1997, the Company began commercial shipment of Vocal'Net,  its
stand-alone IP telephony gateway product and, to date, revenues from the sale of
this product have not been significant. To achieve market acceptance,  Vocal'Net
will be required to demonstrate its functionality,  scalability and reliability,
of which there can be no assurance. In addition,  there can be no assurance that
Vocal'Net  will comply with industry  standards or that industry  standards will
not change and render Vocal'Net  obsolete.  In the event that Vocal'Net fails to
achieve  market  acceptance,  the Company's  business,  financial  condition and
results of operations could be materially and adversely affected.

     The success of Vocal'Net  will also depend upon,  among other  things,  the
continued  expansion of the  Internet  and other IP networks  and their  network
infrastructures.   There  can  be  no  assurance  that  the   infrastructure  or
complementary  products  necessary  to make the  Internet  a  viable  commercial
network will  continue to be developed.  In addition,  there can be no assurance
that IP networks will retain their

                                        6

<PAGE>


current  volume, distance and time-of-day-independent pricing structure, or that
the  costs of access to IP networks, lack of capacity or poor voice transmission
quality  of  IP  networks  will  not  adversely affect the market for IP network
products  and  services. Moreover, critical issues concerning the commercial use
of  the  Internet (including security, reliability, cost, ease of use and access
and  quality  of  service)  remain  unresolved  and  may affect the growth of IP
network  use.  There  can be no assurance that the Internet will be able to meet
additional  demand  or  its users' changing requirements on a timely basis, at a
commercially reasonable cost, or at all.

     The  Vocal'Net  gateway can be  vulnerable  to computer  viruses or similar
disruptive problems.  Computer viruses or problems caused by third parties could
lead to interruptions,  delays or cessation of service.  Further,  inappropriate
use of the  Internet  or other IP networks by third  parties  could  potentially
jeopardize the security of confidential information, such as credit card or bank
account  information or the content of conversations over the IP network,  which
may deter certain persons from ordering and using the Company's products.  Until
more comprehensive security technologies are developed, the security and privacy
concerns of existing and  potential  users may inhibit the growth of IP networks
in general and the market for the Company's IP network products in particular.


Development and Maintenance of Inter-Tel.net Network

     The Company is currently utilizing its Vocal'Net  technology to develop and
expand  its own IP  network,  Inter-Tel.net,  to carry  telephone  traffic.  The
Inter-Tel.net  network is in its initial stages of deployment and,  accordingly,
is subject to a high  degree of risk.  To date,  the  Inter-Tel.net  network has
established points of presence in the San Francisco Bay Area, Washington,  D.C.,
Chicago,  New York,  Phoenix  and Los  Angeles.  If the  market  for IP  network
products fails to develop or develops more slowly than the Company  anticipates,
the  Company's  Inter-Tel.net  network  could become  financially  burdensome to
maintain or obsolete,  either of which could materially and adversely affect the
Company's business, financial condition and results of operations.

     The Company is dependent on third-party suppliers of telecommunications and
Internet network  transmission  services for implementation of Inter-Tel.net and
does not currently have long-term  contracts with such suppliers.  The Company's
ability to expand Inter-Tel.net is dependent upon its ability to obtain services
from such  suppliers.  Certain of these third party  suppliers are or may become
competitors  of the Company,  and such  suppliers  generally  are not subject to
restrictions upon their ability to compete with the Company.  To the extent that
any of these suppliers raise their rates or change their pricing structure,  the
Company may be materially  adversely affected.  Also, the Company faces the risk
that there will be a disruption in the service provided by these suppliers,  and
can give no assurance  that there will not be a  significant  disruption in such
service in the future,  thereby causing a disruption in the services provided by
the Company to its customers.

     Moreover,  although  the  Company has  devoted,  and intends to continue to
devote,  substantial resources to improve the quality of telephone conversations
using Vocal'Net and the  Inter-Tel.net  network,  there can be no assurance that
the problems of voice  communications over the Inter-Tel.net  network that exist
today, including delays in the transmission of speech, loss of voice packets and
sound  quality  inferior  to  that  of  standard  telephony  networks,  will  be
eliminated  or reduced.  In the event that the Company is unable to improve upon
the  sound  quality  and  other  limitations  of voice  communications  over the
Inter-Tel.net  network  and to offer such  improvements  to its  customers  on a
cost-effective  basis,  the  Inter-Tel.net  network could fail to achieve market
acceptance,  and the  Company's  business,  financial  condition  and results of
operations could be materially and adversely affected.


Highly Competitive Industry

     The market for the Company's  products is highly  competitive and in recent
periods has been characterized by pricing pressures and business consolidations.
The Company's  competitors  include  Lucent  Technologies,  Inc.  ("Lucent") and
Northern Telecom Limited ("NorTel"), as well as Comdial Corporation ("Comdial"),
EXECUTONE  Information  Systems,  Inc.   ("Executone"),   Iwatsu  America,  Inc.
("Iwatsu"),  Mitel  Corporation  ("Mitel"),  NEC  Corporation  ("NEC"),  Nitsuko
Corporation ("Nitsuko"), Matsushita Electric Industrial Co., Ltd. ("Panasonic"),
Siemens Rolm Communications, Inc.

                                        7

<PAGE>


("Siemens"),  Toshiba  America,  Inc.  ("Toshiba")  and  others.  Many  of these
competitors  have  significantly  greater  financial,  marketing  and  technical
resources  than the Company. The Company also competes against the regional Bell
operating  companies  ("RBOCs"),  which offer systems produced by one or more of
the   aforementioned  competitors  and  also  offer  Centrex  systems  in  which
automatic  calling  facilities  are  provided  through  equipment located in the
telephone company's central office.

     The Telecommunications Act of 1996 (the "Telecommunications  Act") and AT&T
Corporation's  ("AT&T") announcement to divide itself into three enterprises has
had  an   impact   on   competition   in  the   communications   industry.   The
Telecommunications  Act opened the market  for  telephone  and cable  television
services,  forcing telephone companies to open their networks to competitors and
giving  consumers  a choice of local  phone  carriers.  Conversely,  local phone
companies  are now able to offer long  distance  services.  In  addition,  cable
television  companies can offer telephone  services and Internet  access.  These
changes  have  increased  competition  in the  communications  industry and have
created additional  competition and opportunities in customer premise equipment,
as these new services and interfaces have become available.

     In the market for voice processing applications,  including voice mail, the
Company competes against Applied Voice Technology,  Inc.  ("AVT"),  Active Voice
Corporation    ("Active   Voice"),    Centigram    Communications    Corporation
("Centigram"), Lucent and other competitors, certain of which have significantly
greater  resources than the Company.  In the market for long distance  services,
the  Company  competes  against  AT&T,  MCI  Communication  Corporation,  Sprint
Corporation  and other  competitors,  many of which have  significantly  greater
resources  than the  Company.  The Company  also  expects to compete with RBOCs,
cable  television  companies,  satellite and other  wireless  broadband  service
providers and others for long  distance  business as those  companies  gradually
respond to the  Telecommunications  Act. Key competitive  factors in the sale of
telephone systems and related applications include price, performance, features,
reliability,  service and support, name recognition and distribution capability.
The Company  believes that it competes  favorably in its markets with respect to
the price,  performance  and  features of its  systems,  as well as the level of
service and support that the Company  provides to its customers.  Certain of the
Company's   competitors   have   significantly   greater  name  recognition  and
distribution capabilities than the Company. The Company expects that competition
will continue to be intense in the markets  addressed by the Company,  and there
can be no  assurance  that  the  Company  will be able to  continue  to  compete
successfully.

     In the market for IP  telephony  products,  the  Company  competes  against
existing IP telephony  gateway providers such as Lucent,  NetSpeak  Corporation,
VocalTec  Communications Ltd., Vienna Systems Corporation and others. Several of
these  competitors  have been active in  developing  and  marketing IP telephony
products  for a  greater  period  of time  than the  Company  and  have  already
established  relationships with customers within their market. In addition,  the
Company could face  significant  competition from vendors such as Cisco Systems,
Inc.,  Bay  Networks,   Inc.,  3Com  Corporation,   Motorola,   Inc.  and  MICOM
Communications  Corp.,  should such established data vendors choose to enter the
market for IP telephony  products.  Such companies  currently  produce  products
that, if equipped with voice capabilities, could represent a considerable threat
to the Company within that market. Moreover,  should the market for IP telephony
products become fully developed or develop at a rapid rate, large companies such
as IBM Corporation ("IBM") and Microsoft Corporation  ("Microsoft") could choose
to develop proprietary  software designed to facilitate voice communication over
an IP network.

     As the  Company  enters the  markets  for local  telephone  service  and IP
network  access,  it will  face  additional  competition  from  RBOCs  and other
providers,  which have larger marketing and sales  organizations,  significantly
greater  financial  and technical  resources  and a larger and more  established
customer  base than the Company.  In addition,  RBOCs and other  providers  have
greater  name  recognition,  more  established  positions in the market and long
standing relationships with customers. Therefore, there can be no assurance that
the Company will compete successfully in these markets.

     Many  of the  Company's  current  and  potential  competitors  have  longer
operating  histories,  are  substantially  larger,  and have greater  financial,
manufacturing,  marketing,  technical  and other  resources.  A number also have
greater  name  recognition  and a larger  installed  base of  products  than the
Company.

                                        8

<PAGE>


Competition   in   the   Company's  markets  may  result  in  significant  price
reductions.  As  a result of their greater resources, many current and potential
competitors  may  be  better  able  than  the  Company to initiate and withstand
significant  price  competition  or  downturns  in  the economy. There can be no
assurance  that the Company will be able to continue to compete effectively, and
any  failure  to  do  so  would  have a material adverse effect on the Company's
business, financial condition and operating results.


Management of Growth; Implementation of New Management Information Systems

     The  growth in the  Company's  business  has  placed,  and is  expected  to
continue to place, a significant strain on the Company's  personnel,  management
and  other  resources.  The  Company's  ability  to  manage  any  future  growth
effectively will require it to attract, train, motivate and manage new employees
successfully,  to integrate new  employees  into its overall  operations  and to
continue  to improve  its  operational,  financial  and  management  information
systems.

     The  Company  implemented  a new MIS  system  late in 1995.  The MIS system
significantly  affected  many aspects of the Company's  business,  including its
accounting, operations, purchasing, sales and marketing functions. Following the
date of  implementation,  the Company  experienced  difficulty  with the new MIS
software,  which  increased the Company's  costs,  had an adverse  effect on the
Company's  ability to provide products and services to its customers on a timely
basis and caused delays in coordinating accounting and financial results. During
the fourth quarter of 1996, the Company  determined  that the limitations of the
existing system software would prevent Inter-Tel from establishing an integrated
and centralized  dispatch and  telemarketing  center.  As a result,  the Company
signed an agreement with a large,  established  software and database  vendor to
replace its existing MIS software and implement,  maintain and support alternate
MIS  software to be utilized  throughout  the Company.  Accordingly,  during the
fourth  quarter  of  1996,  the  Company  wrote  off the  software  license  and
implementation costs relating to the system software being replaced.

     The actions to replace the MIS software  could result in  additional  costs
and delays  associated with obtaining a fully  functional MIS system,  including
but not limited to the costs of procuring  additional or alternate  hardware and
software  required but not available in the current  system  configuration,  and
additional  personnel.  Any such cost or delay  could  have a  material  adverse
effect on the Company's business,  financial condition and operating results. In
addition,  implementation  of this system  software and the transition  from the
current  system  software to the new  information  system  software will require
substantial financial resources, time and personnel.

     The  Company  has made  strategic  acquisitions  in the past and expects to
continue to do so in the future.  Acquisitions  require a significant  amount of
the Company's management attention and financial and operational resources,  all
of which are limited.  The  integration of acquired  entities may also result in
unexpected  costs and disruptions and  significant  fluctuations  in, or reduced
predictability  of,  operating  results  from period to period.  There can be no
assurance   that  an  acquisition   will  not  adversely   affect  the  business
relationships  of the  Company  or  the  acquired  entity  with  its  respective
suppliers or customers. Further, there can be no assurance that the Company will
be able to successfully  integrate any acquired operations or achieve any of the
intended benefits of an acquisition.  The Company's failure to manage its growth
effectively  could have a material  adverse  effect on its  business,  financial
condition and operating results.


Dependence Upon Contract Manufacturers and Component Suppliers

     The  Company  currently  procures  certain  components  used in its digital
communication platforms, including certain microprocessors, integrated circuits,
power supplies,  voice processing  interface cards and IP telephony cards from a
single  source  or  limited   sources  of  supply  and,   accordingly,   product
availability could be limited.  As the Company deploys its IP telephony products
and the Inter-Tel.net  network,  the Company expects that it will be required to
increasingly rely upon third party software and hardware suppliers.  The Company
currently  manufactures  its  products  through  a limited  number  of  contract
manufacturers  located in the United States,  the  Philippines  and the People's
Republic of China.  Foreign  manufacturing  facilities are subject to changes in
governmental  policies,  imposition of tariffs and import restrictions and other
factors  beyond  the  Company's  control.  Varian  Associates,  Inc.  ("Varian")
currently

                                        9

<PAGE>


manufactures  a significant portion of the Company's products at Varian's Tempe,
Arizona  facility,  including  substantially  all  of the printed circuit boards
used  in  the  AXXESS and Inter-Tel Axxent digital communication platforms. From
time  to  time,  the  Company has experienced delays in the supply of components
and  finished  goods,  and  there  can be no assurance that the Company will not
experience  such  delays  in  the  future. The Company's reliance on third party
manufacturers  involves  a number of additional risks, including reduced control
over  delivery  schedules, quality assurance and costs. Any delay in delivery or
shortage  of  supply  of  components  or finished goods from Varian or any other
supplier,  or  the Company's inability to develop in a timely manner alternative
or  additional  sources  if  and  when  required,  could  damage  the  Company's
relationships  with  current  and prospective customers and could materially and
adversely  affect  the  Company's  business,  financial  condition and operating
results.  The  Company  has  no  long  term  agreements  with its suppliers that
require  such  suppliers  to  provide fixed quantities of components or finished
goods  at set prices. There can be no assurance that the Company will be able to
continue  to  obtain  components  or  finished goods in sufficient quantities or
quality or on favorable pricing and delivery terms in the future.


Product Protection and Infringement

     The  Company's  future  success  will  depend in part upon its  proprietary
technology.  Although the Company has applied to the U.S.  Patent and  Trademark
Office for a patent related to certain aspects of the Vocal'Net technology,  the
Company currently has no issued patents and relies  principally on copyright and
trade  secret  law  and  contractual  provisions  to  protect  its  intellectual
property.  There can be no  assurance  that any patent,  trademark  or copyright
owned by the Company will not be invalidated, circumvented or challenged or that
the  rights  granted  thereunder  will  provide  meaningful  protection  or  any
commercial  competitive  advantage  to the  Company.  Further,  there  can be no
assurance that others will not develop technologies that are similar or superior
to the Company's technology or that duplicate the Company's  technology.  As the
Company expands its international  operations,  effective  intellectual property
protection may be unavailable or limited in certain foreign countries. There can
be  no   assurance   that  the  steps   taken  by  the  Company   will   prevent
misappropriation of its technology. Litigation may be necessary in the future to
enforce the Company's  intellectual  property  rights,  to protect the Company's
trade secrets,  to determine the validity and scope of the proprietary rights of
others,  or to  defend  against  claims  of  infringement  or  invalidity.  Such
litigation  could result in  substantial  costs and  diversion of resources  and
could  have a  material  adverse  effect on the  Company's  business,  financial
condition and operating results.

     From  time  to  time,  the  Company  is  subject  to  proceedings  alleging
infringement  by the Company of intellectual  property rights of others.  If any
such claim is  asserted  against the  Company,  the Company may seek to obtain a
license under the third party's  intellectual  property rights.  There can be no
assurance that a license will be available on terms acceptable to the Company or
at all. In the alternative,  the Company could resort to litigation to challenge
any such  claim.  Any such  litigation  could  require  the  Company  to  expend
significant sums, divert  management's  attention and require the Company to pay
significant damages,  develop  non-infringing  technology or acquire licenses to
the technology which is the subject of the asserted  infringement,  any of which
could  have a  material  adverse  effect on the  Company's  business,  financial
condition  and  operating  results.  In the event that the  Company is unable or
chooses not to license such  technology  or decides not to challenge  such third
party's  rights,  the Company could  encounter  substantial and costly delays in
product introductions while attempting to design around such third party rights,
or could find that the  development,  manufacture or sale of products  requiring
such licenses could be foreclosed.

                                       10

<PAGE>


Reliance on Dealer Network

     A  substantial  portion of the  Company's  net sales are made  through  its
network of independent dealers. The Company faces intense competition from other
telephone system and voice  processing  system  manufacturers  for such dealers'
business, as most of the Company's dealers carry products which compete with the
Company's  products.  The Company has no  exclusive  agreements  with any of its
dealers. The loss of any significant dealer or group of dealers, or any event or
condition  adversely  affecting  the  Company's  dealer  network,  could  have a
material  adverse  effect on the  Company's  business,  financial  condition and
operating results.


Dependence on Key Personnel

     The Company is  dependent on the  continued  service of, and its ability to
attract  and  retain,  qualified  technical,  marketing,  sales  and  managerial
personnel. The competition for such personnel is intense, and the loss of any of
such  persons,  as well as the failure to recruit  additional  key technical and
sales personnel in a timely manner,  would have a material adverse effect on the
Company's  business and operating  results.  There can be no assurance  that the
Company will be able to continue to attract and retain the  qualified  personnel
necessary for the development of its business.


Risks of Providing Long Distance and Network Services

     Inter-Tel  depends  on  its  supply  of  telecommunications   services  and
information  from  several  long  distance  carriers.  Because  it does  not own
transmission facilities, the Company relies on long distance carriers to provide
network services to the Company's  customers and for billing  information.  Long
distance services are subject to extensive and uncertain governmental regulation
on both  the  federal  and  state  level.  There  can be no  assurance  that the
promulgation of certain regulations will not materially and adversely affect the
Company's business,  financial  condition and operating results.  Contracts with
the long distance  carriers from which the Company  currently  resells  services
typically  have a one year term in which the  Company's  prices  are  relatively
fixed and have minimum use  requirements.  The market for long distance services
is  currently   experiencing  and  is  expected  to  experience  in  the  future
significant price competition, resulting in decreasing end-user rates. There can
be no assurance that the Company will meet minimum use commitments, will be able
to negotiate  lower rates with carriers in the event of any decrease in end user
rates or will be able to extend its  contracts  with long  distance  carriers at
prices favorable to the Company. The Company's ability to continue to expand its
long distance  services  depends upon its ability to continue to secure reliable
long  distance  services  from a  number  of  long  distance  carriers  and  the
willingness of such carriers to continue to provide telecommunications  services
and billing information to the Company on favorable terms.


Potential Fluctuations In Quarterly Results; Limited Backlog

     The Company's quarterly operating results depend upon a variety of factors,
including the volume and timing of orders received  during the quarter,  the mix
of products sold, mix of distribution  channels,  general  economic  conditions,
patterns  of  capital   spending  by  customers,   the  timing  of  new  product
announcements  and  releases  by  the  Company  and  its  competitors,   pricing
pressures, the cost and effect of acquisitions, and the availability and cost of
products and components from the Company's  suppliers.  The Company's  customers
typically require immediate shipment and installation of platforms and software.
As a result,  the Company has  historically  operated  with a  relatively  small
backlog,  and  sales  and  operating  results  in any  quarter  are  principally
dependent  on  orders  booked  and  shipped  in that  quarter.  Historically,  a
substantial  portion of the  Company's  net sales in a given  quarter  have been
recorded in the third month of the  quarter,  with a  concentration  of such net
sales in the last two weeks of the  quarter.  Market  demand for  investment  in
capital  equipment such as digital  communication  platforms and associated call
processing and voice processing  software  applications is largely  dependent on
general economic conditions,  and can vary significantly as a result of changing
conditions in the economy as a whole. The Company's  expense levels are based in
part  on  expectations  of  future  sales  and,  if  sales  levels  do not  meet
expectations,  operating results could be adversely  affected.  Because sales of
digital  communication  platforms  through the Company's  dealers  produce lower
gross margins than sales through

                                       11

<PAGE>


the  Company's  direct  sales  organization,  operating results have varied, and
will  continue  to  vary based upon the mix of sales through direct and indirect
channels.  Although  the  Company  to  date  has  been able to resell the rental
streams   from   leases   under  its  Totalease  program  profitably  and  on  a
substantially  current basis, the timing and profitability of lease resales from
quarter   to   quarter  could  impact  operating  results,  particularly  in  an
environment  of  fluctuating  interest  rates.  Long  distance sales, which have
lower  gross  margins  than  the  Company's  core business, have grown in recent
periods  at  a  faster  rate  than the Company's overall net sales. As a result,
gross  margins  could  be  adversely  affected  in  the event that long distance
calling  services  continue  to  increase  as  a  percentage  of  net  sales. In
addition,  the  Company  is  subject to seasonality in its operating results, as
net  sales  for  the  first  and  third  quarters are frequently less than those
experienced,  in  the  fourth  and second quarters, respectively. As a result of
these  and  other factors, the Company has in the past experienced, and could in
the  future  experience,  fluctuations  in  sales  and  operating  results  on a
quarterly   basis.  See  "Management's  Discussion  and  Analysis  of  Financial
Condition and Results of Operations."


Volatility of Stock Price

     The market price for the Company's  Common Stock has been highly  volatile.
The Company believes that factors such as announcements of developments relating
to the Company's  business,  fluctuations  in the Company's  operating  results,
shortfalls in revenue or earnings relative to securities analysts' expectations,
announcements  of  technological  innovations or new products or enhancements by
the Company or its  competitors,  general  conditions in the  telecommunications
industry  or  the  worldwide  economy,  changes  in  legislation  or  regulation
affecting  the   telecommunications   industry,   an  outbreak  of  hostilities,
developments in intellectual  property rights and  developments in the Company's
relationships  with its  customers  and  suppliers  could cause the price of the
Company's Common Stock to fluctuate, perhaps substantially. Many of such factors
are beyond the Company's control. In addition,  in recent years the stock market
in general,  and the market for shares of technology stocks in particular,  have
experienced extreme price  fluctuations,  which have often been unrelated to the
operating performance of affected companies.  There can be no assurance that the
market  price of the  Company's  Common  Stock will not  experience  significant
fluctuations  in the future,  including  fluctuations  that are unrelated to the
Company's performance.


Year 2000 Compliance

     Many currently  installed  computer systems and software products are coded
to accept only two digit  entries in the date code field.  Beginning in the year
2000,  these  date code  fields  will  need to  accept  four  digit  entries  to
distinguish  21st century dates from 20th century  dates.  As a result,  in less
than three years,  computer  systems and/or  software used by many companies may
need to be upgraded to comply  with such "Year 2000"  requirements.  Significant
uncertainty  exists in the software  industry  concerning the potential  effects
associated with such compliance.  Although the Company currently offers software
products that are designed to be Year 2000 compliant,  there can be no assurance
that the Company's software products contain all necessary date code changes.

     The  Company  believes  that  the  purchasing  patterns  of  customers  and
potential  customers  may be  affected by Year 2000 issues in a variety of ways.
Many  companies  are expending  significant  resources to correct or patch their
current software systems for Year 2000 compliance. These expenditures may result
in reduced funds available to purchase  software  products such as those offered
by the Company.  Many  potential  customers may also choose to defer  purchasing
Year 2000 compliant products until they believe it is absolutely necessary, thus
resulting in potentially  stalled market sales within the industry.  Conversely,
Year 2000 issues may cause other  companies  to  accelerate  purchases,  thereby
causing an increase in short-term demand and a consequent  decrease in long-term
demand for  software  products.  Additionally,  Year 2000  issues  could cause a
significant number of companies, including existing customers of the Company, to
reevaluate their current communications  platform, IP network telephony or voice
processing  software needs, and as a result consider  switching to other systems
or suppliers.  Any of the foregoing could result in a material adverse effect on
the Company's business, financial condition and operating results.

                                       12

<PAGE>


Concentration of Ownership

     As of September 30, 1997, Steven G. Mihaylo,  the Company's Chairman of the
Board of Directors and Chief Executive Officer  beneficially owned approximately
23.4% of the  outstanding  shares of the Common Stock.  As a result,  he has the
ability to exercise  significant  influence over matters  requiring  shareholder
approval.  In addition,  the concentration of ownership could have the effect of
delaying or preventing a change in control of the Company.

                                       13

<PAGE>


                                 USE OF PROCEEDS

     The net  proceeds  from the sale of the  3,000,000  shares of Common  Stock
offered by the Company  hereby are  estimated to be $68.8  million,  based on an
assumed public  offering  price of $24.375 per share and after  deduction of the
estimated  underwriting  discount and offering expenses.  The Company intends to
use a portion of the net  proceeds  of this  offering  to develop and expand its
Inter-Tel.net  network.  The Company may use another portion of the net proceeds
to finance  acquisitions of additional  resellers of telephony  products,  other
strategic  acquisitions  or  corporate  alliances.  The Company  considers  such
acquisitions  on an  ongoing  basis  but  has no  current  commitments  for  any
acquisition  which  would have a  material  impact on the  Company's  results of
operations or financial condition. The Company intends to use the balance of the
net proceeds primarily for working capital and other general corporate purposes.
Pending such uses, the Company will invest the net proceeds in investment  grade
short or medium term income producing investments.  The Company will not receive
any proceeds from the sale of shares by the Selling Shareholders.


                                 DIVIDEND POLICY

     On September  24, 1997,  the Company's  Board of Directors  declared a cash
dividend (the "Cash Dividend") of $0.01 for every share of Common Stock, payable
to  shareholders  of record as of December 31, 1997,  with dividend  payments to
commence on or about January 15, 1997.  Prior to the Cash Dividend,  the Company
had declared no cash dividends on its Common Stock since incorporation.


                           PRICE RANGE OF COMMON STOCK

     The Company's  Common Stock is traded on the Nasdaq  National  Market under
the symbol INTL. The following table sets forth, for the periods indicated, high
and low sale  prices for the Common  Stock as  reported  on the Nasdaq  National
Market.


                                                                 High       Low
                                                               --------   ------
       1995
          First Quarter    .................................    $ 6.50    $3.44
          Second Quarter   .................................      8.06     5.78
          Third Quarter    .................................      9.88     7.44
          Fourth Quarter   .................................      8.69     6.94
       1996
          First Quarter    .................................      9.25     5.69
          Second Quarter   .................................     14.19     8.75
          Third Quarter    .................................     13.31     8.00
          Fourth Quarter   .................................     12.25     6.00
       1997
          First Quarter    .................................      9.75     5.69
          Second Quarter   .................................     11.00     4.75
          Third Quarter    .................................     26.75     9.88
          Fourth Quarter (through October 29, 1997)   ......     32.38    18.50


     On October 29, 1997,  the last  reported  sale price of the Common Stock on
the Nasdaq  National  Market was $24.375 per share.  As of October 22, 1997, the
Company had approximately 590 holders of record of its Common Stock.

                                       14

<PAGE>


                                 CAPITALIZATION

<TABLE>
     The following  table sets forth the short-term debt and  capitalization  of
the Company at September 30, 1997 and as adjusted to give effect to the issuance
and sale by the Company of 3,000,000 shares of Common Stock offered hereby at an
assumed  public  offering  price of  $24.375  per share and the  receipt  of the
estimated net proceeds therefrom.


<CAPTION>
                                                                      September 30, 1997
                                                                  ---------------------------
                                                                     Actual       As Adjusted
                                                                  ------------   ------------
                                                                        (in thousands)
<S>                                                               <C>            <C>
Short-term debt   .............................................    $     --       $    --
                                                                   =========      ========
Long-term debt    .............................................    $     --       $    --
Shareholders' equity:
 Common Stock, no par value, 30,000,000 shares authorized,
   actual, 100,000,000 shares authorized, as adjusted;
   23,553,942 shares issued and outstanding, actual, 26,553,942
   shares issued and outstanding, as adjusted(1)   ............       60,473       106,185
 Retained earnings   ..........................................       42,441        42,441
 Equity adjustment for foreign currency translation   .........         (314)         (314)
                                                                   ---------      --------
                                                                     102,600       148,312
 Less treasury stock at cost  .................................      (23,057)          --
                                                                   ---------      --------
   Total shareholders' equity    ..............................       79,543       148,312
                                                                   ---------      --------
    Total capitalization   ....................................    $  79,543      $148,312
                                                                   =========      ========

<FN>
- ------------
(1)  As adjusted  authorized shares reflect the approval of the amendment of the
     Company's articles of incorporation as of November 14, 1997 to increase the
     authorized number of shares of Common Stock from 30,000,000 to 100,000,000.
     Shares issued and  outstanding  exclude (i) 3,018,150  shares  reserved for
     issuance  upon  exercise of stock options as of September 30, 1997 and (ii)
     1,994,776  additional  shares reserved for future issuance  pursuant to the
     Company's stock option and employee stock purchase plans.
</FN>
</TABLE>

                                       15

<PAGE>


                      SELECTED CONSOLIDATED FINANCIAL DATA

<TABLE>
     The following table summarizes certain selected consolidated financial data
of the Company and its subsidiaries. The selected consolidated financial data as
of  December  31,  1995 and 1996 and for each of the three  years in the  period
ended December 31, 1996 are derived from consolidated  financial statements that
have  been  audited  by  Ernst & Young  LLP,  independent  auditors,  which  are
incorporated  by  reference  in  this  Prospectus.   The  selected  consolidated
financial  data as of December 31,  1992,  1993 and 1994 and for each of the two
years in the period  ended  December  31,  1993 are  derived  from  consolidated
financial  statements  that have been audited by Ernst & Young LLP,  independent
auditors,   which  are  not  included  or  incorporated  by  reference  in  this
Prospectus.  The selected consolidated financial data for the nine month periods
ended  September 30, 1996 and 1997 and as of September 30, 1997 are derived from
unaudited  consolidated financial statements which are incorporated by reference
into this Prospectus.  The unaudited  consolidated  financial statements include
all  adjustments,  consisting of normal  recurring  accruals,  which the Company
considers  necessary for a fair  presentation of the financial  position and the
results of operations for these periods. Operating results for nine months ended
September  30, 1997 are not  necessarily  indicative  of the results that may be
expected  for the entire  fiscal  year  ending  December  31, 1997 or for future
periods.  The  data  presented  below  should  be read in  conjunction  with the
Consolidated   Financial  Statements  and  Notes  thereto  and  other  financial
information incorporated by reference into this Prospectus.

<CAPTION>
                                                                                                                    Nine Months
                                                                    Year Ended December 31,                      Ended September 30,
                                                    -------------------------------------------------------      -------------------
                                                      1992       1993       1994       1995          1996          1996       1997
                                                    --------   --------   --------   --------      --------      --------   --------
                                                                        (in thousands, except per share data)
<S>                                                 <C>        <C>        <C>        <C>           <C>           <C>        <C>     
Statement of Operations Data:
 Net sales ........................................ $ 88,120   $103,373   $123,878   $150,533      $185,884      $133,384   $162,061
 Cost of sales ....................................   54,031     63,088     74,033     87,696       104,966        75,348     89,191
                                                    --------   --------   --------   --------      --------      --------   --------
 Gross profit .....................................   34,089     40,285     49,845     62,837        80,918        58,036     72,870
 Research and development .........................    3,928      4,114      4,537      5,764         6,581         4,933      5,852
 Selling, general and administrative ..............   25,040     29,682     36,502     43,578        56,386        40,233     51,035
 Special charge ...................................     --         --         --        1,315(1)      4,542(2)       --         --
                                                    --------   --------   --------   --------      --------      --------   --------
 Operating income .................................    5,121      6,489      8,806     12,180(1)     13,409(2)     12,870     15,983
 Interest and other income ........................      680        282        904      1,674         1,974         1,356        924
 Interest expense .................................      736        449        122        106            77            43         37
 Income taxes .....................................    1,901      2,381      3,648      5,249         6,264         5,811      6,798
                                                    --------   --------   --------   --------      --------      --------   --------
 Net income ....................................... $  3,164   $  3,941   $  5,940   $  8,499(1)   $  9,042(2)   $  8,372   $ 10,072
                                                    ========   ========   ========   ========      ========      ========   ========
 Net income per share(3):
  Primary ......................................... $   0.18   $   0.22   $   0.27   $   0.35(1)   $   0.34(2)   $   0.31   $   0.39
                                                    ========   ========   ========   ========      ========      ========   ========
  Fully diluted ................................... $   0.18   $   0.22   $   0.27   $   0.35(1)   $   0.34(2)   $   0.31   $   0.37
                                                    ========   ========   ========   ========      ========      ========   ========
 Weighted average shares and
  share equivalents(3):
  Primary .........................................   17,320     18,060     21,800     24,002        26,790        26,770     26,035
  Fully diluted ...................................   17,402     18,132     21,800     24,048        26,794        26,796     27,155
</TABLE>


<TABLE>
<CAPTION>
                                                                           December 31,
                                                 --------------------------------------------------------------------  September 30,
                                                   1992           1993           1994           1995           1996        1997
                                                 --------       --------       --------       --------       --------    --------
                                                                                     (in thousands)
<S>                                              <C>            <C>            <C>            <C>            <C>         <C>     
 Balance Sheet Data:
  Working capital ................               $ 12,484       $ 34,244       $ 37,220       $ 75,623       $ 79,709    $ 62,206
  Total assets ...................                 37,838         57,467         67,748        118,767        132,611     125,282
  Shareholders' equity ...........                 19,375         38,605         45,122         85,117         94,934      79,543

<FN>
- ------------
(1)  Operating  income in the year ended  December  31, 1995  includes a special
     charge of  $1,315,000,  which reduced net income by $815,000,  or $0.03 per
     share after tax. This special  charge  reflects the costs  associated  with
     integrating  the operations of American  Telcom Corp. of Georgia,  Inc. and
     Access  West,  Inc.  Without this special  charge,  the Company  would have
     reported operating income of approximately  $13.5 million and net income of
     approximately $9.3 million, or $0.39 per share, for such period.

(2)  Operating  income in the year ended  December  31, 1996  includes a special
     charge of $4,542,000,  which reduced net income by $2,725,000, or $0.10 per
     share after tax. This special  charge  reflects the decision by the Company
     to replace its MIS software. Without this special charge, the Company would
     have  reported  operating  income of  approximately  $18.0  million and net
     income of approximately $11.8 million, or $0.44 per share, for such period.

(3)  Financial  data for all  periods  have been  restated  to reflect the Stock
     Split.
</FN>
</TABLE>

                                       16

<PAGE>


                     MANAGEMENT'S DISCUSSION AND ANALYSIS OF
                  FINANCIAL CONDITION AND RESULTS OF OPERATIONS

     This  Management's  Discussion  and  Analysis of  Financial  Condition  and
Results of Operations and other parts of this Prospectus contain forward-looking
statements  that  involve  risks  and   uncertainties.   The  words   "expects,"
"anticipates,"  "believes,"  "intends," "will" and similar expressions  identify
forward-looking  statements  which are  based on  information  available  to the
Company on the date hereof,  and the Company assumes no obligation to update any
such  forward-looking  statements.  The  Company's  actual  results could differ
materially  from those  anticipated  in these  forward-looking  statements  as a
result of  certain  factors,  including  those set forth in "Risk  Factors"  and
elsewhere in this Prospectus.


General

     Inter-Tel  is a single point of contact,  full service  provider of digital
business  telephone  systems,  IP telephony  products,  CTI applications,  voice
processing software and long distance calling services. Inter-Tel's products and
services include the AXXESS and Inter-Tel Axxent digital business  communication
platforms,  the  AXXESSORY  Talk voice  processing  platform,  the  Vocal'Net IP
telephony  gateway  and the  Inter-Tel.net  private IP  telephony  network.  The
Company  also  provides  maintenance,  leasing  and  support  services  for  its
products.

     The Company has  developed  networks of direct sales  offices,  dealers and
VARs that sell the  Company's  products.  In recent  periods,  the  Company  has
focused  on  expanding  its  direct  sales  capabilities  and its dealer and VAR
network.  The Company has acquired a number of  resellers of telephony  products
and integrated these operations with its existing direct sales operations in the
same geographic areas and in other strategic markets.

     Sales of systems through the Company's dealers and VARs typically  generate
lower gross margins than sales through the Company's direct sales  organization,
although  direct sales typically  require higher levels of selling,  general and
administrative  expenses.  In addition,  the Company's long distance and network
services  typically  generate  lower gross  margins  than sales of software  and
system  products.  Accordingly,  the  Company's  margins may vary from period to
period  depending upon  distribution  channel and product mix. In the event that
sales  through  dealers  or  sales  of  long  distance  services  increase  as a
percentage of net sales, the Company's overall gross margin could decline.

     The Company's operating results depend upon a variety of factors, including
the volume and timing of orders  received  during a period,  the mix of products
sold and mix of distribution channels, general economic conditions,  patterns of
capital  spending  by  customers,  the timing of new product  announcements  and
releases by the Company and its  competitors,  pricing  pressures,  the cost and
effect of acquisitions  and the availability and cost of products and components
from  the  Company's  suppliers.  Historically,  a  substantial  portion  of the
Company's  net sales in a given quarter have been recorded in the third month of
the quarter, with a concentration of such net sales in the last two weeks of the
quarter.  In addition,  the Company is subject to  seasonality  in its operating
results,  as net sales for the first and third quarters are frequently less than
those experienced during the fourth and second quarters, respectively. See "Risk
Factors--Potential Fluctuations in Quarterly Results; Limited Backlog."

     The Company offers to its customers a package of lease  financing and other
services  under  the name  Totalease.  Totalease  provides  to  customers  lease
financing,  maintenance  and support  services,  fixed price  upgrades and other
benefits.  The Company  finances  this program  through the  periodic  resale of
monthly lease payments to financial institutions.

                                       17

<PAGE>


Results of Operations

<TABLE>
     The  following  table sets  forth  certain  statement  of  operations  data
expressed as a percentage of net sales:


<CAPTION>
                                                                                           Nine Months
                                                  Year Ended December 31,              Ended September 30,
                                          ---------------------------------------   -------------------------
                                             1994          1995          1996          1996          1997
                                          -----------   -----------   -----------   -----------   -----------
<S>                                          <C>           <C>           <C>           <C>           <C>   
Net sales ...............................    100.0%        100.0%        100.0%        100.0%        100.0%
Cost of sales ...........................     59.8          58.3          56.5          56.5          55.0
                                           -------       -------       -------       -------       -------
Gross profit ............................     40.2          41.7          43.5          43.5          45.0
Research and development ................      3.6           3.8           3.5           3.7           3.6
Selling, general and administrative .....     29.5          28.9          30.3          30.2          31.5
Special charge ..........................       --           0.9           2.5            --            --
                                           -------       -------       -------       -------       -------
Operating income ........................      7.1           8.1           7.2           9.6           9.9
Interest and other income ...............      0.7           1.1           1.1           1.0           0.5
Interest expense ........................      0.1           0.1           0.0           0.0           0.0
Income taxes ............................      2.9           3.5           3.4           4.3           4.2
                                           -------       -------       -------       -------       -------
Net income ..............................      4.8%          5.6%          4.9%          6.3%          6.2%
                                           =======       =======       =======       =======       =======
</TABLE>

Nine  Months  Ended  September 30, 1997 Compared to Nine Months Ended September
30, 1996

   
     Net Sales.  Net sales  increased  21.5% to $162.1 million in the first nine
months of 1997 from $133.4 million in the first nine months of 1996.  Sales from
the  Company's  direct sales offices and  wholesale  distribution  accounted for
approximately $19.6 million of the increase. The remaining increases occurred in
network and long distance sales and other operations.
    

     Gross  Profit.  Gross profit  increased to $72.9  million,  or 45.0% of net
sales,  in the first  nine  months of 1997 from $58.0  million,  or 43.5% of net
sales, in the first nine months of 1996. This increase was primarily a result of
higher  sales,   as  a  percentage  of  total  net  sales,   of  AXXESS  digital
communication platforms, call processing software and voice processing software.
In addition,  gross  margin  increased  based on a percentage  increase in sales
through the Company's direct sales offices compared to its dealer network.

     Research and Development.  Research and development  expenses  increased to
$5.9 million,  or 3.6% of net sales,  in the first nine months of 1997 from $4.9
million,  or 3.7% of net sales,  for the first nine months of 1996.  This dollar
increase  was  primarily  attributable  to expenses  relating  to the  continued
development  of the AXXESS  software and systems,  unified  messaging  and voice
processing  software,  Vocal'Net and CTI applications.  The Company expects that
research and development  expenses will continue to increase in absolute dollars
as the Company  continues to develop and enhance  existing and new  technologies
and products. These expenses may vary, however, as a percentage of net sales.

     Selling,  General and Administrative.  Selling,  general and administrative
expenses  increased to $51.0 million,  or 31.5% of net sales, for the first nine
months of 1997 from $40.2  million,  or 30.2% of net  sales,  for the first nine
months of 1996. This reflected increased selling, incentive,  training and other
compensation  costs  attributable  to the increased  sales through the Company's
direct sales offices,  additional personnel to support the direct dealer network
and the expansion of long distance operations,  development of the Inter-Tel.net
network and expenses associated with the expansion of international  operations.
In addition,  the Company  increased  its sales and  technical  training  staff,
expanded its credit management group and made increases in reserves for accounts
receivable.  The  Company  expects  that  selling,  general  and  administrative
expenses will increase in absolute dollars,  but may vary as a percentage of net
sales.

     Interest  and  Other   Income.   Interest   and  other   income   decreased
approximately  $400,000 in 1997  principally as a result of lower levels of cash
available for investment.

     Net  Income.  Net income  increased  20.3% to $10.1  million,  or $0.39 per
share, for the first nine months of 1997 compared to net income of $8.4 million,
or $0.31 per share, for the first nine months of 1996.

                                       18

<PAGE>


Year Ended December 31, 1996 Compared to Year Ended December 31, 1995

     Net Sales.  Net sales increased 23.5% to $185.9 million in 1996 from $150.5
million in 1995.  Sales from direct sales offices  accounted  for  approximately
$14.7 million of the increase,  and increased sales from wholesale  distribution
accounted  for  approximately  $12.2  million  of the  increase.  The  remaining
increases occurred in long distance sales and other operations.

     Gross  Profit.  Gross profit  increased to $80.9  million,  or 43.5% of net
sales in 1996 from $62.8 million,  or 41.7% of net sales in 1995. This reflected
the  continuing  transition  to the dealer  network and the  expansion of AXXESS
software and systems sales.

     Research and Development.  Research and development  expenses  increased to
$6.6  million,  or 3.5% of net sales in 1996 from $5.8  million,  or 3.8% of net
sales, in 1995.  These expenses in both 1996 and 1995 were directed  principally
to the continued  development  of the AXXESS and Inter-Tel  Axxent  software and
systems,  unified  messaging and voice  processing  software,  Vocal'Net and CTI
applications.

     Selling,  General and Administrative.  Selling,  general and administrative
expenses  increased to $56.4 million,  or 30.3% of net sales in 1996, from $43.6
million,  or 28.9% of net sales, in 1995. This reflected increased incentive and
other  compensation,  costs associated with the  implementation of the Company's
information  systems,  additional personnel to support the direct dealer network
and  expanded  long  distance  operations,  and  expenses  associated  with  the
expansion of international operations.

     Special  Charge.  During the fourth quarter of 1996, the Company decided to
replace its MIS software  with an integrated  solution  from a more  established
vendor and accordingly wrote off the software license and  implementation  costs
relating to the system  software being  replaced.  The special pre-tax charge of
$4.5 million ($0.10 per share after tax), reflects the costs associated with the
Company's  decision to abandon its  current MIS  software in favor of  different
system software.

     Other  Income.   Other  income  increased  in  1996  principally  from  the
investment of the funds received from the August 1995 public  offering and funds
generated through operating cash flow.

     Net Income. Net income increased 6.4% to $9.0 million,  or $0.34 per share,
in 1996 including the special charge recognized in the fourth quarter,  compared
to $8.5 million,  or $0.35 per share, in 1995.  Excluding the special charges in
both periods,  net income would have been $11.8 million, or $0.44 per share, for
1996  compared to $9.3 million,  or $0.39 per share for 1995.  In addition,  net
income per share in 1996 was based on additional  average shares  outstanding in
1996,  primarily  reflecting the public offering of 4.0 million shares in August
1995.


Year Ended December 31, 1995 Compared to Year Ended December 31, 1994

     Net Sales.  Net sales increased 21.5% to $150.5 million in 1995 from $123.9
million in 1994.  Sales from direct sales offices  accounted  for  approximately
$9.5 million of the  increase,  with  wholesale  distribution  sales  increasing
approximately  $11.2 million.  The remaining increases occurred in long distance
sales and other operations.

     Gross  Profit.  Gross profit  increased to $62.8  million,  or 41.7% of net
sales in 1995 from $49.8 million,  or 40.2% of net sales in 1994. This reflected
the transition to the direct dealer network and the expansion of AXXESS software
and systems sales.

     Research and Development.  Research and development  expenses  increased to
$5.8  million,  or 3.8% of net sales in 1995 from $4.5  million,  or 3.6% of net
sales, in 1994.  These expenses in both 1995 and 1994 were directed  principally
to the continued  development  of the AXXESS and Inter-Tel  Axxent  software and
systems,  unified messaging and voice processing  software  applications and CTI
applications.

     Selling,  General and Administrative.  Selling,  general and administrative
expenses  increased to $43.6 million,  or 28.9% of net sales in 1995, from $36.5
million,  or 29.5% of net sales, in 1994. This reflected increased incentive and
other compensation,  costs associated with the implementation of new information
systems,  additional personnel to support the direct dealer network and expanded
long distance  operations,  and expenses associated with expansion of operations
of the Company's Asian subsidiary.

                                       19

<PAGE>


     Special Charge. The special pre-tax charge of $1.3 million ($0.03 per share
after tax),  reflects the costs  associated  with  integrating the operations of
American Telcom Corp. of Georgia,  Inc. and Access West, Inc. The special charge
principally includes costs associated with redundancy in inventories,  equipment
abandonment,  the  combination and relocation of business  operations,  employee
reductions and the write-off of intangible assets.

     Other  Income.   Other  income  increased  in  1995  principally  from  the
investment of the funds received from the August 1995 public  offering and funds
generated through operating cash flow.

     Net Income. Net income increased 43.1% to $8.5 million, or $0.35 per share,
in 1995  after a special  charge  recognized  in the second  quarter,  from $5.9
million,  or $0.27 per share, in 1994.  Without the special  charge,  net income
would have been $9.3 million, or $0.39 per share, for the year. In addition, net
income per share in 1995 was based on  additional  average  shares  outstanding,
primarily reflecting the public offering of 4.0 million shares in August 1995.


Inflation/Currency Fluctuation

     Inflation  and currency  fluctuations  have not  previously  had a material
impact on Inter-Tel's  operations.  International  procurement  agreements  have
traditionally been denominated in U.S. currency.  Moreover, a significant amount
of  contract  manufacturing  has been or is  expected  to be  moved to  domestic
sources.  The expansion of  international  operations in the United  Kingdom and
Europe  and  increased  sales,  if any,  in Japan  and  other  parts of Asia and
elsewhere  could result in higher  international  sales as a percentage of total
revenues; however, international revenues are currently not significant.


Liquidity and Capital Resources

     At  September  30,  1997,  the  Company  had  $22.2  million  in  cash  and
equivalents,  which  represents a decrease of  approximately  $16.7 million from
December 31, 1996. The Company maintains a $7.0 million unsecured revolving line
of credit with Bank One, Arizona, NA. This credit facility is annually renewable
and is available  through July 31, 1998. Under the credit facility,  the Company
has the  option to borrow  at a prime  rate or  adjusted  LIBOR  interest  rate.
Historically,   the  credit   facility  has  been  used   primarily  to  support
international letters of credit to suppliers.

     Net cash  provided by operating  activities  totaled  $17.6 million for the
nine months ended  September  30,  1997,  compared to net cash used by operating
activities  of  $722,000  for the same  period  in 1996.  The  increase  in cash
generated in 1997 was  primarily the result of  profitable  operations  plus non
cash depreciation  charges and a slightly improved net working capital position.
Net working  capital  improved  principally  due to a $5.0  million  increase in
current  liabilities,  which was  largely  offset  by  accounts  receivable  and
inventory  increases of $4.1 million due to higher revenues and operations.  The
Company  continues  to expand  its dealer  network,  which has  required  and is
expected  to  continue  to  require  working  capital  for  increased   accounts
receivable and inventories.

     Net cash used in  investing  activities,  primarily  in the form of capital
expenditures,  was $8.8  million  and $4.6  million  for the nine  months  ended
September 30, 1997 and 1996, respectively. Capital expenditures and cash used in
an acquisition totaled approximately $8.1 million and $825,000, respectively, in
the first nine months of 1997. The Company anticipates making additional capital
expenditures during the remainder of 1997, which will relate to the expansion of
facilities, equipment and management information systems used in operations.

     Net cash used in financing  activities  totaled  $25.6 million for the nine
months ended  September 30, 1997 compared to net cash  generated of $591,000 for
the same  period  in 1996.  During  the  second  quarter  of 1997,  the  Company
initiated  a stock  repurchase  program  under  which  the  Board  of  Directors
authorized the repurchase of up to 1,470,000 shares (on a pre-Stock Split basis)
of the Common Stock. The Company expended  approximately  $7.6 million and $25.1
million for stock  repurchases  in the third  quarter and the nine months  ended
September 30, 1997,  respectively,  which were funded primarily through existing
cash balances.  The Company  reissued shares with a cost basis of  approximately
$2.1  million  and $4.1  million  in the third  quarter  and nine  months  ended
September 30, 1997, respectively,

                                       20

<PAGE>


relating  to stock option exercises and issuances. The proceeds received for the
stock  reissued  was  less  than its cost basis. Accordingly, the difference has
been recorded as a reduction to retained earnings.

     The Company  offers to its customers  lease  financing and other  services,
including  its  Totalease  program.  The Company  funds  these  programs in part
through the sale to financial  institutions  of rental income  streams under the
leases.  Resold lease rentals  totaling  $92.0 million and $66.0 million  remain
unbilled at September 30, 1997 and December 31, 1996, respectively.  The Company
is obligated to repurchase such income streams in the event of defaults by lease
customers and,  accordingly,  maintains  reserves based upon loss experience and
past due  accounts.  Although  the  Company  to date has been able to resell the
rental  streams  from  leases  under  its  lease  programs  profitably  and on a
substantially current basis, the timing and profitability of lease resales could
impact  the  Company's  business  and  operating  results,  particularly  in  an
environment  of  fluctuating  interest  rates and economic  uncertainty.  If the
Company is required to repurchase  rental  streams and realize losses thereon in
amounts  exceeding  its  reserves,  its  operating  results  will  be  adversely
affected.

     The Company  believes  that the net  proceeds  from this  offering  and its
working  capital  and  credit  facilities,  together  with cash  generated  from
operations,  will be sufficient to develop and expand its Inter-Tel.net network,
to finance  acquisitions of additional resellers of telephony products and other
strategic  acquisitions or corporate alliances,  and to provide adequate working
capital  for at least  the next  twelve  months.  However,  to the  extent  that
additional funds are required in the future to address working capital needs and
to provide  funding for capital  expenditures,  expansion of the business or the
Inter-Tel.net  network  or  additional  acquisitions,   the  Company  will  seek
additional  financing.  There can be no assurance that additional financing will
be available when required or on acceptable terms.


Impact of Recently Issued Accounting Standards

     In February 1997,  the Financial  Accounting  Standards  Board (the "FASB")
issued SFAS No. 128, "Earnings Per Share" ("SFAS No. 128"), which is required to
be adopted on December 31, 1997.  At that time,  the Company will be required to
change the method  currently  used to compute  earnings per share and to restate
all prior periods.  Under the new requirements for calculating  primary earnings
per share, the dilutive effect of stock options will be excluded.  The impact is
expected to result in an increase  in primary  earnings  per share for the third
quarter  ended  September 30, 1997 and September 30, 1996 of $0.01 and $0.00 per
share  respectively.  The impact is expected to result in an increase in primary
earnings per share for the nine months ended  September  30, 1997 and  September
30, 1996 of $0.01 and $0.02 per share  respectively.  The impact of SFAS No. 128
on the calculation of fully diluted earnings per share for these quarters is not
expected to be material.

     In June 1997, the FASB issued SFAS No. 131,  "Disclosures about Segments of
an  Enterprise  and  Related   Information"  ("SFAS  No.  131").  SFAS  No.  131
establishes  standards  for the way  that  public  business  enterprises  report
information about operating segments in annual financial statements and requires
that those enterprises  report selected  information about operating segments in
interim financial reports issued to shareholders.  It also establishes standards
for related disclosures about products and services, geographic areas, and major
customers.  SFAS No. 131 is effective for financial  statements for fiscal years
beginning  after December 15, 1997. The adoption of SFAS 131 will have no impact
on the Company's consolidated results of operations,  financial position or cash
flows.

                                       21

<PAGE>


                                    BUSINESS

     This Prospectus contains  forward-looking  statements within the meaning of
Section 27A of the  Securities  Act and Section 21E of the Exchange Act of 1934.
Readers are cautioned  that such  statements  are only  predictions  and involve
risks and  uncertainties.  Actual  results  could differ  materially  from those
projected in the forward-looking statements as a result of the factors set forth
under "Risk Factors" and elsewhere in this Prospectus.

     Inter-Tel  is a single point of contact,  full service  provider of digital
business  telephone  systems.  IP telephony  products,  CTI applications,  voice
processing software and long distance calling services. Inter-Tel's products and
services include the AXXESS and Inter-Tel Axxent digital business  communication
platforms,  the  AXXESSORY  Talk voice  processing  platform,  the  Vocal'Net IP
telephony  gateway  and the  Inter-Tel.net  private IP  telephony  network.  The
Company  also  provides  maintenance,  leasing  and  support  services  for  its
products.  Because of the modular  design and high level of software  content in
the  Company's  products,  including its AXXESS and  Inter-Tel  Axxent  systems,
customers can readily  increase the size and  functionality  of their systems as
their future  telecommunications needs change. The Company believes that it is a
leading supplier of small to medium size business telephone systems.

     The Company has developed a  distribution  network of direct sales offices,
dealers  and VARs which sell the  Company's  products  to small and medium  size
organizations  and to divisions or departments of larger  organizations  such as
Fortune 500 companies,  large service  organizations and governmental  agencies.
The Company has 29 direct sales offices in the United States,  one in the United
Kingdom, one in Japan and a network of hundreds of dealers and VARs who purchase
directly  from the  Company.  The  Company is in the  process of  expanding  its
international dealer network.


Industry Background

     In  recent  years,   advances  in   telecommunications   technologies  have
facilitated the development of increasingly  sophisticated telephone systems and
applications.  Users rely upon a variety of applications,  including  conference
calling,  speaker  phones,  automated  attendant,  voice  processing and unified
messaging (the  integration of voice mail,  facsimile and electronic  mail),  to
improve  communications  within  their  organizations  and  with  customers  and
vendors.  Digital  technology has  facilitated  the integration of computing and
telecommunications  technologies,  which  has  made  possible  a  number  of new
applications that further enhance  productivity.  Examples of these applications
include   automatic   call   distribution   (which   provides  for  queuing  and
prioritization of incoming calls), call accounting (which permits accounting for
telephone usage and toll calls), unified messaging,  electronic data interchange
between  customers  and vendors and the use of automatic  number  identification
coupled  with  database   look-up  (where  customer   information  is  retrieved
automatically from a computerized database when the customer calls).

     The emergence of high-performance, low-cost computers and the growth of the
Internet  and  other   digital  IP  networks   have  enabled   real-time   voice
communications to be transmitted on digital packet switched networks rather than
over traditional circuit switched telephone networks.  This development of voice
applications  for  the  Internet  and  other  IP  networks  reflects  a  broader
convergence  of standard  voice  communications  and data  networks.  Because IP
network telephony  converts all transmissions to the same type of packets,  both
voice and data can use the same data circuits, thereby increasing efficiency and
maximizing the use of available  bandwidth.  The lowering of federal  regulatory
barriers  to  competition   across   traditionally   distinct   sectors  of  the
telecommunications industry has opened new markets for and increased competitive
pressures  on  telecommunications  companies.  In  response  to  these  factors,
telecommunications  companies have begun to establish a presence in Internet and
other IP network voice communications services.

     Following   the  breakup  of  the  Bell  system  in  1984,   which  removed
restrictions  on  the  ability  of  the  RBOCs  to  purchase  telecommunications
equipment from independent  suppliers and to resell such equipment to end users,
the market for telecommunications systems and applications became increasingly

                                       22

<PAGE>


fragmented.   The   number   of   independent   suppliers  and  distributors  of
telecommunications  equipment  initially  increased,  but  increased  levels  of
competition  subsequently led to consolidation among suppliers and distributors.
In  addition,  different  telecommunications systems and applications were often
available  from  only  one  or  a  limited  number  of suppliers, which required
businesses  seeking  complete  systems  to  work  with  a  number  of  different
suppliers.  A  business seeking a telephone system, voice mail and long distance
services  would  most  likely  purchase  the  products  and  services from three
separate  vendors.  As business telecommunications requirements have become more
advanced,   the   integration  of  different  systems  has  become  increasingly
difficult.


Strategy

     Inter-Tel's  objective  is to  continue  to  strengthen  its  position as a
leading  single-source  provider  of  telecommunications   equipment,   software
applications  and network  services.  The Company's  strategy  incorporates  the
following key elements:

     Offer Total Telephony Solution

     The Company  intends to  continue  to offer a broad  range of products  and
services that incorporates  advanced  technologies and provides customers with a
single  source to fulfill  their  telecommunications  needs on a  cost-effective
basis.  Inter-Tel couples this  solution-oriented  approach with a high level of
customer  service  and  support  and a  commitment  to  quality  throughout  the
Company's  operations.  The Company's  telephone systems are integrated with the
Company's long distance calling services,  voice mail,  automated  attendant and
other telecommunications  applications,  support for interactive voice response.
Because of the  modular  design of the  Company's  systems and the high level of
software  content in its products,  customers can readily  increase the size and
functionality  of their  systems as their needs  change by adding  software  and
hardware  applications  or services or by  upgrading  to new systems or advanced
versions of existing systems.  The Company believes that its customers prefer to
purchase telecommunications  equipment and services from a single source because
of the  convenience,  consistency of service,  ease of upgrade,  availability of
financing  alternatives and confidence in the performance of integrated  systems
and services.


     Accelerate Adoption of Vocal'Net Gateway

     In September 1997, Inter-Tel commercially released Vocal'Net, a gateway for
bridging  public  circuit  switched  telephone  networks and IP packet  switched
networks  such as the  Internet.  The  Company  intends  to  focus  its  initial
marketing  efforts  on  existing  customers  as  well  as  other  multi-location
companies  and  international  enterprises.  Vocal'Net  can be used to reduce an
enterprise's communications costs through more effective use of its data network
and reduced use of traditional long distance services. In addition,  the Company
plans  to  pursue  relationships  with  ISPs,  long  distance  resellers,  cable
television  companies  and other  service  providers  that  choose to  establish
alternative  networks to compete with traditional long distance  services and to
provide additional applications to their customers.


     Expand Inter-Tel.net Network

     The Company is currently  developing  and  implementing  its own private IP
telephony network,  Inter-Tel.net, to carry telephone traffic at rates typically
lower than those of standard  telephone  networks.  To date,  the  Inter-Tel.net
network  has  established  points of  presence  in the San  Francisco  Bay Area,
Washington,  D.C.,  Chicago,  New York,  Phoenix  and Los  Angeles.  The Company
intends  to expand  the  number of points of  presence,  both  domestically  and
internationally,  as well as increase capacity in existing cities. Inter-Tel.net
is designed to carry long distance traffic originated from Inter-Tel's  customer
base and  provide  other  exchange  carriers,  individuals,  and  enterprises  a
cost-effective  alternative  to current  offerings of the  conventional  circuit
switched long distance carriers.


     Continue to Develop Advanced Communications Products

     The Company commits substantial research and development resources in order
to provide its customers  with  advanced  telecommunications  technologies  on a
cost-effective  basis.  The Company has  developed an extensive  C++ library and
significant  telecommunications  expertise.  In many cases, the Company develops
new technologies as software upgrades or add-ons to existing  products.  In this
regard,

                                       23

<PAGE>


the  AXXESS  5.0 platform, which is currently scheduled for release in the first
half  of  1998,  will  provide an extensive enhancement of AXXESS, the Company's
primary  product.  Ongoing  research and development efforts are directed to the
development  of  new  products,  applications  and  services  for  sale into the
Company's  existing customer base and to new customers. Through CTI applications
and  advanced  network  services, Inter-Tel provides technology that is designed
to   enable  its  customers  to  improve  their  efficiency  and  enhance  their
competitiveness.


     Expand Distribution Channels

     The Company continues to expand its distribution channels through a growing
network of direct  dealers,  expansion of the Company's  direct sales  presence,
hiring  additional  direct sales  personnel  and  extension  into  international
markets. The Company has established sales relationships with hundreds of direct
dealers and continues to expand this  network.  The Company is in the process of
establishing  dealer  networks in Japan and other parts of Asia and is expanding
its dealer  network in the United  Kingdom and Europe.  The Company has expanded
its direct sales activity in recent periods  through  strategic  acquisitions of
resellers  of  telephony  products  and  services in areas where the Company has
existing  direct  sales  offices  and other  strategic  markets,  and  considers
additional  acquisition  opportunities  on an ongoing basis. The Company also is
expanding  its  distribution  into other  channels  such as  computer  equipment
dealers, resellers of data communications equipment and software resellers.


Products and Services

     The  Company  offers a broad  range of products  and  services  designed to
support the needs of businesses and other organizations requiring voice and data
communications  systems.  The Company's principal products are digital telephone
systems which support  installations up to 512 ports, IP telephony  products and
services,  CTI  applications,  unified  messaging  software and voice processing
software.  The Company's principal system sales consist of systems supporting 10
to 300  telephones  with  suggested  retail prices of up to $300,000 per system,
depending  on  configuration.  The Company  also offers  long  distance  calling
services, network design and implementation services,  maintenance,  leasing and
support services, and resells other telecommunications products.


Digital Communication Platforms

     Inter-Tel  offers  an  extensive  line of  digital  communication  systems,
including  hardware  platforms  and C++  software  applications.  Because  these
platforms are based upon open  architecture and conform to established  computer
and telephone  industry standard  programming  interfaces and protocols (such as
TAPI,  TSAPI and TCP/IP),  customers  can choose from a variety of either server
level or desktop applications.

     AXXESS.  Inter-Tel's  primary product,  the AXXESS  platform,  incorporates
advanced technology for computer and telephone  integration providing businesses
with the ability to  customize  applications  to enhance  their  operations  and
increase  productivity.  The current  AXXESS system  release  supports up to 512
ports and includes such advanced  capabilities as primary rate ISDN,  integrated
call  recording,  voice  prompts in  different  languages,  and a  Windows-based
attendant's console.  The AXXESS 5.0 platform,  which is currently scheduled for
release  in the  first  half of  1998,  is  designed  to  allow,  through  fully
transparent  digital  networking,  two or more systems to operate as one, and to
increase capacity to 20,000 ports.

     The system  incorporates  fully-digital  processing and transmission to the
desktop and open architecture interfaces which allow the system to be integrated
with and  controlled by attached  computers  such as PCs and  workstations.  The
system incorporates object-oriented C++ software developed by the Company, which
facilitates   upgrades  and  the   incorporation  of  additional   features  and
functionality.

     AXXESS system telephones incorporate  user-friendly,  6-by-16 character LCD
displays  with menu keys that  permit  the user to  select  from  multiple  menu
choices or access additional menu screens.  AXXESSORY Talk, permits  push-button
selection of voice processing commands to appear on the telephone's LCD display,
as well as voice-prompted selections through the telephone keypad. The

                                       24

<PAGE>


AXXESS  system  is  multi-lingual,  currently offering English or Japanese voice
prompts  and  LCD  displays and allowing the user to switch from one language to
the other. Additional languages can be added in the future.

     The open  architecture  interface  permits tight  integration  with a PC or
workstation  system bus, using several  industry-standard  interfaces to provide
efficient  access  to  voice  processing  and  other  applications  on the PC or
workstation.  Applications  include database  look-up (which utilizes  Caller-ID
information to retrieve customer  information  automatically from a computerized
database),  automated  attendant,  interactive  voice  response,  automatic call
distribution (which queues and prioritizes  incoming calls), and call accounting
(which  permits the  monitoring  of telephone  usage and toll cost).  The AXXESS
system is managed through a Microsoft  Windows-based graphical user interface on
a PC to facilitate installation, system configuration and programming.

     The AXXESS  system  utilizes  advanced  software to  configure  and utilize
real-time   digital   signal   processor   semiconductor   components   ("DSPs")
incorporated  into the system  hardware.  The use of DSPs and  related  software
lowers  system  costs,   permits  higher   functionality  and  increases  system
flexibility.  For  example,  DSPs can be  configured  by the system  manager for
different  combinations  of  speakerphones,  conference  capabilities  and other
DSP-based  facilities.   The  system's  speakerphones   incorporate  full-duplex
technology,  which permits  speakerphones  to transmit in both directions at the
same time  without the  necessity  to override  one  speaker's  voice to prevent
feedback interference.

     The AXXESS  software is written in a high-level,  object-oriented  language
which can operate on many commonly used  processors.  Accordingly,  the software
can be readily ported to other hardware  platforms.  The Company intends to port
the AXXESS  software to faster  microprocessors  which will permit the AXXESS to
grow  to a  much  larger  size,  in  order  to  enhance  the  functionality  and
performance  of these  larger  systems and to permit a  migration  path from the
smaller AXXESS system as a customer's system requirements increase.

     Inter-Tel  Axxent.   Small  businesses  are  demanding  advanced  telephony
applications formerly reserved only for large corporations. The Inter-Tel Axxent
is designed to bring many of the  advanced  features  and  functionality  of the
AXXESS system to smaller  installations on a cost-effective basis while enabling
users to migrate to an AXXESS system as their  telecommunications  needs evolve.
The Inter-Tel  Axxent supports 24 lines and 12 trunks and provides  capabilities
such as computer telephone integration, DSP technology, real-time ACD reporting,
and integrated voice processing. Housed in a compact, PC-type mid-tower chassis,
the Inter-Tel  Axxent platform also offers the convenience of a default database
so the system is fully  operational  as soon as it is plugged in. Basic database
programming can also be performed through the digital telephone terminals.


IP Network Gateway and Inter-Tel.net Network

     Gateway  products are designed as transition  points  between two different
network types, such as between the public circuit switched telephone network and
a packet  switched IP network such as the  Internet.  Gateway  products  convert
regular voice  transmissions  to or from the compressed data packets that travel
over packetized networks.

     In September 1997, the Company released Vocal'Net, a stand-alone IP network
telephony solution available for use with the AXXESS system or other traditional
telephone systems equipped with T-1/E-1, ISDN or analog capability.  It provides
a gateway for bridging  the  telephone  network and a company's  intranet or the
Internet. With the Vocal'Net gateway, users can conduct real-time, two-way voice
communications  over the  Internet  and realize  potential  savings  compared to
standard long  distance  telephone  service.  Designed to meet the needs of most
businesses, the Vocal'Net gateway is available in multiple port sizes.

     Vocal'Net  does  not  require  customized  telephone  sets  or  specialized
software or cards in each desktop computer.  Further, Vocal'Net does not rely on
the central processing unit of the computer for the compression or packetization
of information,  but instead uses high speed DSPs, enabling the server to handle
additional functions such as unified messaging.

                                       25

<PAGE>


     A caller can dial from a standard telephone to the Vocal'Net gateway, which
connects the call from the circuit switched telephone network,  converts it into
the  compressed,  digitized  data packets used by an IP network,  and routes the
call via the IP  network  to  another  Vocal'Net  gateway.  The  second  gateway
connects with the regular telephone system and dials the final destination. (See
illustration below.)


                               [GRAPHIC OMITTED]


     When  used in a  corporate  environment,  Vocal'Net  can be  attached  to a
T-1/E-1,  ISDN or analog trunk  interface  on the PBX,  and the PBX's  Automatic
Route   Selection  or  Least  Cost  Routing   features  will  be  programmed  to
automatically  route  calls for other  locations  that  have  Vocal'Net  Servers
through that trunk interface. When phone users wish to place a call, they simply
dial the desired  telephone  number like any other call.  The PBX will route the
call to Vocal'Net, which converts it into the compressed, digitized data packets
used by an IP  network,  and  routes  the call  via the IP  network  to  another
Vocal'Net  gateway.  The second gateway  connects with the far-end PBX and dials
either the extension  number of the desired party or accesses a trunk on the PBX
and makes a call into the switched network. (See illustration below.)


                               [GRAPHIC OMITTED]


     Because IP network telephony converts all transmissions to the same type of
packets, both voice and data can use the same data circuits,  thereby increasing
efficiency  and maximizing the use of bandwidth.  Bandwidth  utilization  can be
maximized to a point that some users may be able to reduce the overall number of
circuits needed.

     In its  initial  commercial  release,  Vocal'Net  is  designed to work with
business telephone systems that operate over T-1/E-1, ISDN and analog lines, and
to handle up to 24 simultaneous calls per server.  Vocal'Net servers can also be
networked to operate  seamlessly  in  configurations  consisting of thousands of
ports. The Company is currently developing  additional  enhancements,  including
industry standard

                                       26

<PAGE>


compatibility  (H.323)  for  integration with PC-based software applications and
other  types  of  gateways as well as a fax gateway to provide fax and broadcast
fax  capabilities  across  the  Internet.  Other  planned  enhancements  to  the
Vocal'Net  include  functionality designed to allow businesses to create virtual
offices,  enabling traveling or off-site employees to connect to the main office
from   remote   locations.   Another   planned  application  is  "Touch-To-Talk"
telephony-enabled  web  pages,  which  will allow users to press a link on a web
page  and  to  automatically  connect  over  an  IP  network to talk to customer
service agents.

     Utilizing Vocal'Net  technology,  Inter-Tel continues to develop and expand
Inter-Tel.net,  a private IP network  designed to carry long distance  telephone
traffic at rates  typically  lower than  traditional  long  distance  providers.
Inter-Tel.net  is  currently  being used by the  Company's  employees  for calls
between  Inter-Tel.net's  six points of presence:  the San  Francisco  Bay Area,
Washington  D.C.,  Chicago,  New York,  Phoenix and Los Angeles.  In its initial
commercial  release,  the Vocal'Net gateway supports calls placed from telephone
to  telephone.  Later  releases  are  planned  to  support  communications  from
telephone  to  computer,  computer to  telephone,  computer  to  computer  and a
facsimile machine to facsimile machine. See "Risk Factors--Developing Market for
IP Network Telephony;  Uncertain  Regulatory  Environment,"  "--Risks Associated
with  Vocal'Net;  Dependence  upon IP  Network  Infrastructures;  Risk of System
Failure;  Security Risks" and  "--Development  and Maintenance of  Inter-Tel.net
Network."


Computer-Telephone Integration

     Through  CTI,  the  computer  and  the   telephone   are  linked  into  one
environment.  Inter-Tel's  AXXESSORY  Connect  software  for the  AXXESS  system
enables  users to receive  phone calls  through  their  desktop PC. Using Caller
I.D., a caller's  information can be retrieved from the company's  database even
before the call is accepted.  On an individual desktop or a company-wide network
basis,  Inter-Tel offers a variety of products,  such as AXXESSORY ACD, that can
manage  automatic  call  distribution  at  peak  efficiency  or  route  incoming
telephone calls, based on various parameters,  to a specific person. It can also
collect,  analyze and report  real-time call  processing  information  for staff
forecasting and analysis.

     Inter-Tel's software  applications  integrate,  through the use of Novell's
TSAPI and  Microsoft's  TAPI  standard  interfaces,  with other  "off-the-shelf"
Windows applications such as personal information managers, call routing or call
management  software that can further enhance  customer service while increasing
call efficiency and employee  productivity.  Inter-Tel has formed  relationships
with a number  of third  party  software  developers  to  integrate  with  their
existing  applications to create a working  environment  for database,  personal
organizer, or terminal emulation programs.

     If these "off-the-shelf" applications do not adequately meet the needs of a
customer,  the open design of Inter-Tel's  software enables independent software
developers to write custom applications through Inter-Tel's Developer's Program.
Alternatively,   Inter-Tel's  CTI  Solutions  Group  can  provide   professional
consulting  services or development  of individual  customer  applications,  for
either desktop or local area network ("LAN")-based applications.


Unified Messaging and Voice Processing Software

     Inter-Tel's unified messaging  software,  Visual Mail, works in conjunction
with  a  variety  of  messaging  platforms,  including  the  Microsoft  Exchange
messaging  application,  Lotus Notes,  Lotus  cc:Mail,  Novell's  GroupWise  and
Internet mail applications such as Qualcomm's Eudora. Visual Mail integrates all
types of messages into a single-user interface on a PC, supports both voice mail
and  facsimile  mail  and  provides   another  means  for  improving   workplace
productivity and retrieving messages from a PC connected to a modem.

     Inter-Tel's  AXXESSORY  Talk,  Axxent Talk and IVX500 are voice  processing
platforms  that  work  with  Inter-Tel's   communication  platforms.  All  three
applications  use the  Multi-Vendor  Interface  Protocol  ("MVIP"),  an industry
standard for connecting  multi-vendor PC-based boards in voice processing,  data
switching and video systems.


Other Services and Products

     Networking  Technologies  Integration.  To develop a solid  foundation  for
state-of-the-art  data  and  telecommunications  networking,  customers  require
strategic network expertise from their networking

                                       27

<PAGE>


provider. Inter-Tel designs, installs and supports the complete integration of a
customer's   complex  data  and   telecommunications   network,   from  LANs  to
geographically dispersed wide area networks ("WANs").

     By forming  relationships with major manufacturers of hardware and software
technologies,  Inter-Tel provides the routers,  ATM, LAN and WAN switches,  file
servers,  intelligent  hubs and any other  device  required  for the  customer's
intranet  or for  usage  of  the  Internet.  Pre-sale  design  support,  project
coordination for  implementation,  and  installation  support are offered on the
full line of Inter-Tel server-based telephony products and services.

     Network and Long  Distance  Services.  The Company,  through its  Inter-Tel
NetSolutions,  Inc.  subsidiary,  resells a  variety  of long  distance  calling
services,  including  domestic and international  calling services,  800 calling
services,  dedicated services, voice and video conferencing,  customized billing
and a variety of other  telecommunication  services.  The Company  believes that
certain of its  customers  desire the  convenience  of acquiring  long  distance
calling  services through the same vendor that the customer uses to purchase its
other  telephony  equipment and  services.  The Company  currently  resells long
distance  services  pursuant to contracts with four of the six largest U.S. long
distance  carriers.  There can be no  assurance  that the Company  will meet its
minimum use commitments,  will be able to negotiate lower rates with carriers in
the  event of any  decrease  in end user  rates  or will be able to  extend  its
contracts with long distance carriers on prices favorable to the Company.

     Call centers using T-1 access for incoming toll-free traffic, sales offices
using NetSolutions' switched long distance or companies linking multiple offices
throughout the country on a frame relay network are examples of the applications
currently supported by Inter-Tel NetSolutions.

     Leasing  Services.  The Company  offers its Totalease  program  through its
Inter-Tel Leasing,  Inc. subsidiary.  Totalease enables an end user to acquire a
full range of telephony systems, applications, maintenance and support services,
as well as  lease  financing,  from a  single  vendor.  The  Totalease  contract
provides a total  system  solution to the customer at a set monthly  cost,  with
system expansion available at predictable additional fees. The typical Totalease
contract  has a term of 60  months,  with the  customer  entitled  to renew  the
contract at a specified price for up to an additional 36 months.

     Inter-Tel  also offers a line of low cost lease purchase  financing.  Lease
terms  range  from 24 to 84  months  with  $1.00,  fixed and fair  market  value
purchase options.  In addition,  Inter-Tel will customize  financing packages to
suit customers with special  financial needs. By offering this type of financing
to acquire  Inter-Tel  products  and  services,  the  customer  is able to lease
directly from the manufacturer and Inter-Tel,  or the Inter-Tel  dealer, is able
to maintain a close customer relationship.

     Other Products. Inter-Tel also distributes other leading telecommunications
products from its Factored  Products  Division through its direct sales offices,
dealers and VARs.  Factored  Products  represents  products  that  Inter-Tel has
endorsed  as leading  communications  peripherals  utilized  in many  day-to-day
functions.  Businesses require telecommunications  products to provide increased
productivity,  ease  of  operations  and  reliability.  Many of  these  products
interface  with  Inter-Tel  telephone  systems.  Inter-Tel's  product  selection
consists of  videoconferencing,  battery  backup,  headsets,  surge  protection,
paging equipment, wireless communications and data multiplexers.


Sales and Distribution

     The Company has developed a  distribution  network of direct sales offices,
dealers  and VARs which  market the  Company's  products to small to medium size
organizations  and  divisions or  departments  of larger  organizations.  In the
United States, the Company has 29 direct sales offices and a network of hundreds
of dealers who purchase  systems  directly from the Company.  Direct dealers are
typically  located in  geographic  areas in which the Company  does not maintain
direct sales offices.  The Company also  distributes its products  through VARs.
These resellers have traditionally sold complex data solutions to customers, and
the Company is seeking to leverage  this  distribution  network to capitalize on
the merging of the computer and telephony  industries.  The Company  maintains a
dealer support office and direct sales

                                       28

<PAGE>


office  in the United Kingdom and has a network of dealers in the United Kingdom
and  Europe.  In  addition,  the  Company  maintains a dealer support office and
direct  sales  office  in Japan and is in the process of establishing dealers in
other parts of Asia.

     The Company  believes that its success depends in part upon the strength of
its  distribution  channels  and the ability of the  Company to  maintain  close
access to its end user customers.  In recent periods,  the Company has sought to
improve its access to end user customers by effecting strategic  acquisitions of
resellers of telephony products and services in markets in which the Company has
existing direct sales offices and in other strategic markets.

     Direct  dealers  and  VARs  typically  enter  into  non-exclusive  reseller
contracts  for a term of one or  more  years.  The  Company  generally  provides
support  and  other  services  to the  reseller  pursuant  to the  terms  of the
agreement.  The agreements often include  requirements that the reseller meet or
use its best efforts to meet minimum annual purchase  quotas.  The Company faces
intense  competition  from other telephone  system and voice  processing  system
manufacturers for its dealers' attention, as most of the Company's dealers carry
products  which compete with the Company's  products.  There can be no assurance
that any such dealer will not promote the products of the Company's  competitors
to the detriment of the Company's  products.  The loss of any significant dealer
or group of dealers, or any event or condition adversely affecting the Company's
dealer network,  could have a material adverse effect on the Company's business,
financial condition and operating results. See "Risk Factors--Reliance on Dealer
Network."

     International  sales,  which to date  have not been  significant,  are made
through the Company's  United Kingdom and Japan  subsidiaries.  In order to sell
its products to customers in other countries, the Company must comply with local
telecommunications standards. The Company's AXXESS system can be readily altered
through  software  modifications,  which the Company  believes  will  facilitate
compliance with these local regulations. In addition, the AXXESS system has been
designed to support multi-lingual functionality,  and currently supports English
and Japanese. The Company is presently establishing dealer networks in Japan and
other  parts of Asia and is working  to expand its dealer  network in the United
Kingdom  and  Europe.  International  sales  are  subject  to a number of risks,
including  changes  in foreign  government  regulations  and  telecommunications
standards, export license requirements, tariffs and taxes, other trade barriers,
fluctuations  in currency  exchange  rates,  difficulty in  collecting  accounts
receivable, difficulty in staffing and managing foreign operations and political
and economic  instability.  Fluctuations in currency  exchange rates could cause
the Company's  products to become  relatively  more  expensive to customers in a
particular  country,  leading to a reduction in sales or  profitability  in that
country. In addition,  the costs associated with developing  international sales
may not be offset by increased sales in the short term, or at all.


Customer Service and Support

     The Company  believes  that  customer  service  and  support  are  critical
components of customer  satisfaction and the success of the Company's  business.
The Company operates a technical support hotline to provide a range of telephone
support to its distributors,  dealers and end user customers through a toll-free
number.  The Company also provides  on-site customer support and, through remote
diagnostic  procedures,  has the ability to detect and correct  system  problems
from its technical support facilities.

     Information   taken  from  customer  call  records  allows   feedback  into
Inter-Tel's Quality First continuous  improvement process, thus providing a road
map for continuous product and service enhancements. Each direct sales office is
given  a  periodic  service   activity  report   summarizing  the  reasons  that
technicians  are  asking for  assistance  and  common  issues  that give rise to
technical  inquiries.  This  allows  them to  analyze  trends  in their  service
operations and provide better customer service.


Research and Development

     The Company  believes  that its  ability to enhance  its current  products,
develop and  introduce new products on a timely  basis,  maintain  technological
competitiveness  and meet customer  requirements  are essential to the Company's
success. The Company's research and development efforts over the last several

                                       29

<PAGE>


years  have  been  focused  primarily  on  enhancing  the  existing  AXXESS  and
AXXESSORY  Talk  systems  with  additional  applications, capacity and features,
developing   a   unified   messaging   software   application,   developing   a
telecommunications  networking  package,  and  developing  new products like the
Vocal'Net  Server.  Current  efforts  are related to support the development and
enhancement  of  IP telephony products like the Vocal'Net Server, development of
additional   applications   and  features  of  the  AXXESS  and  AXXESSORY  Talk
communications  products.  The  software-based architecture of the AXXESS system
facilitates  maintenance  and support, upgrades, and incorporation of additional
features and functionality.

     The Company had a total of 94 personnel engaged in research and development
as of September 30, 1997.  Research and development  expenses were $4.5 million,
$5.8  million,  $6.6 million and $5.9 million in 1994,  1995,  1996 and the nine
months ended September 30, 1997, respectively.


Manufacturing

     The Company  manufactures  substantially  all of its systems  through third
party  subcontractors  located in the United States,  China and the Philippines.
These  subcontractors use both standard and proprietary  integrated circuits and
other  electronic   devices  and  components  to  produce  telephone   switches,
telephones   and   printed   circuit   boards  to  the   Company's   engineering
specifications  and designs.  The suppliers  also inspect and test the equipment
before delivering them to the Company, which in some cases then performs systems
integration,   software   loading,   final  testing  and  shipment.   Varian,  a
multinational electronic company,  currently manufacturers a significant portion
of the Company's  products,  including  substantially all of the printed circuit
boards used in the AXXESS and  Inter-Tel  Axxent  systems,  at  Varian's  Tempe,
Arizona  facility.  If Varian or any of the Company's other  manufacturers  were
unable or unwilling to  manufacture  the Company's  products in the future,  the
Company could  experience  substantial  delays in finding  alternative  sources,
which  could  have a  material  adverse  effect on the  Company's  business  and
operating  results.  The Company maintains written agreements with its principal
suppliers. The Company provides a forecast schedule to its suppliers and revises
the forecast on a periodic basis.

     Foreign  manufacturing  facilities  are subject to changes in  governmental
policies,  imposition  of tariffs  and import  restrictions,  and other  factors
beyond  the  Company's  control.  Certain  of  the  microprocessors,  integrated
circuits and voice processing  interface cards used in the Company's systems are
currently  available  from a single or limited  sources of supply.  From time to
time,  the Company  experiences  delays in the supply of components and finished
goods. Delay or lack of supply from existing sources or the inability to develop
alternative  sources if and when  required in the future  could  materially  and
adversely affect operating results.  See "Risk  Factors--Dependence  on Contract
Manufacturers and Component Suppliers."


Quality

     The Company believes that the quality of its systems,  customer service and
support,  and other aspects of its organization is a critical element of meeting
the needs of its  customers.  Through its Quality First  continuous  improvement
process initiated in 1991, Inter-Tel implements quality processes throughout its
business  operations.  The Company has established  formal  procedures to ensure
responsiveness  to customer  requests,  to monitor response times and to measure
customer  satisfaction.  The Company has also established means by which all end
users,  including  customers  of  the  Company's  resellers,  can  make  product
enhancement  requests directly to the Company.  The Company supports its dealers
and VARs through an extensive  training program at the Company's facility and at
dealer sites, a toll-free telephone number for sales and technical support,  and
the provision of end user marketing materials.  The Company typically provides a
one year  warranty on its systems to end users.  In  manufacturing,  the Company
continuously  monitors the quality of the products produced on its behalf by the
Company's manufacturing  subcontractors,  and is extending the Company's Quality
First continuous improvement process to its suppliers.


Competition

     The market for the Company's  products is highly  competitive and in recent
periods has been characterized by pricing pressures and business consolidations.
The Company's competitors include

                                       30

<PAGE>


Lucent  and  NorTel, as well as Comdial, Executone, Iwatsu, Mitel, NEC, Nitsuko,
Panasonic,   Siemens,  Toshiba  and  others.  Many  of  these  competitors  have
significantly  greater  financial,  marketing  and  technical resources than the
Company.  The  Company  also  competes  against  the  RBOCs, which offer systems
produced  by  one  or  more  of  the  aforementioned  competitors and also offer
Centrex  systems  in  which  automatic  calling  facilities are provided through
equipment located in the telephone company's central office.

     The  Telecommunications  Act and AT&T's  announcement to divide itself into
three  enterprises  has  had an  impact  on  competition  in the  communications
industry.  The  Telecommunications Act opened the market for telephone and cable
television  services,  forcing  telephone  companies  to open their  networks to
competitors and giving  consumers a choice of local phone carriers.  Conversely,
local phone companies are now able to offer long distance services. In addition,
cable companies can offer telephone services and Internet access.  These changes
have  increased  competition  in the  communications  industry  and have created
additional competition and opportunities in customer premise equipment, as these
new services and interfaces have become available.

     In the market for voice processing applications,  including voice mail, the
Company  competes  against  AVT,  Active  Voice,  Centigram,  Lucent  and  other
competitors,  certain of which have  significantly  greater  resources  than the
Company. In the market for long distance services,  the Company competes against
AT&T,  MCI,  Sprint  Corporation  and  other  competitors,  many of  which  have
significantly  greater resources than the Company. The Company will also compete
with RBOCs, cable television  companies,  satellite and other wireless broadband
service  providers,  and others for long  distance  business as those  companies
gradually respond to the Telecommunications  Act. Key competitive factors in the
sale of telephone systems and related applications  include price,  performance,
features,  reliability,  service and support,  name recognition and distribution
capability.  The Company believes that it competes favorably in its markets with
respect to the price,  performance  and features of its systems,  as well as the
level of service and support that the Company provides to its customers. Certain
of the Company's  competitors  have  significantly  greater name recognition and
distribution  capabilities than the Company,  although the Company believes that
it has  developed  a  competitive  distribution  presence  in  certain  markets,
particularly  those  where the  Company has direct  sales  offices.  The Company
expects that competition will continue to be intense in the markets addressed by
the  Company,  and there can be no  assurance  that the Company  will be able to
continue to compete successfully.

     In the market for IP  telephony  products,  the  Company  competes  against
existing IP telephony  gateway providers such as Lucent,  NetSpeak  Corporation,
Vocaltec  Communications Ltd., Vienna Systems Corporation and others. Several of
these  competitors  have been active in  developing  and  marketing IP telephony
products  for a  greater  period  of time  than the  Company  and  have  already
established  relationships with customers within their market. In addition,  the
Company could face  significant  competition from vendors such as Cisco Systems,
Inc.,  Bay  Networks,   Inc.,  3Com  Corporation,   Motorola,  Inc.,  and  MICOM
Communications  Corp.,  should such established data vendors choose to enter the
market for IP telephony  products.  Such companies  currently  produce  products
that, if equipped with voice capabilities, could represent a considerable threat
to the Company within that market. Moreover,  should the market for IP telephony
products become fully developed or develop at a rapid rate, large companies such
as IBM and Microsoft could choose to develop  proprietary  software  designed to
facilitate voice communication over an IP network.

     As the  Company  enters the  markets  for local  telephone  service  and IP
network  access,  it will  face  additional  competition  from  RBOCs  and other
providers,  which have larger marketing and sales  organizations,  significantly
greater  financial  and technical  resources  and a larger and more  established
customer  base than the Company.  In addition,  RBOCs and other  providers  have
greater  name  recognition,  more  established  positions in the market and long
standing relationships with customers. Therefore, there can be no assurance that
the Company will compete successfully in these markets.

                                       31

<PAGE>


Intellectual Property Rights

     The  Company's  future  success  will  depend in part upon its  proprietary
technology.  Although the Company has applied to the U.S.  Patent and  Trademark
Office for a patent related to certain aspects of the Vocal'Net technology,  the
Company currently has no issued patents and relies  principally on copyright and
trade  secret  law  and  contractual  provisions  to  protect  its  intellectual
property.  There can be no  assurance  that any patent,  trademark  or copyright
owned by the Company will not be invalidated, circumvented or challenged or that
the  rights  granted  thereunder  will  provide  meaningful  protection  or  any
commercial  competitive  advantage  to the  Company.  Further,  there  can be no
assurance that others will not develop technologies that are similar or superior
to the Company's technology or that duplicate the Company's  technology.  As the
Company expands its international  operations,  effective  intellectual property
protection may be unavailable or limited in certain foreign countries. There can
be  no   assurance   that  the  steps   taken  by  the  Company   will   prevent
misappropriation of its technology. Litigation may be necessary in the future to
enforce the Company's  intellectual  property  rights,  to protect the Company's
trade secrets,  to determine the validity and scope of the proprietary rights of
others,  or to  defend  against  claims  of  infringement  or  invalidity.  Such
litigation  could result in  substantial  costs and  diversion of resources  and
could have a material  adverse  effect on the  Company's  business and operating
results.

     From  time  to  time,  the  Company  is  subject  to  proceedings  alleging
infringement  by the Company of intellectual  property rights of others.  If any
such claim is  asserted  against the  Company,  the Company may seek to obtain a
license under the third party's  intellectual  property rights.  There can be no
assurance that a license will be available on terms acceptable to the Company or
at all. In the alternative,  the Company could resort to litigation to challenge
any such  claim.  Any such  litigation  could  require  the  Company  to  expend
significant  sums and could  require  the  Company to pay  significant  damages,
develop non-infringing technology or acquire licenses to the technology which is
the  subject of the  asserted  infringement,  any of which could have a material
adverse  effect on the Company's  business and operating  results.  In the event
that the Company is unable or chooses not to license such  technology or decides
not to  challenge  such  third  party's  rights,  the  Company  could  encounter
substantial  and costly  delays in product  introductions  while  attempting  to
design  around  such third  party  rights,  or could find that the  development,
manufacture or sale of products requiring such licenses could be foreclosed.


Employees

     As of September 30, 1997,  the Company had a total of 1,220  employees,  of
whom 964 were engaged in sales,  marketing and customer support,  57 in quality,
manufacturing and related operations, 94 in research and development, and 105 in
finance,  leasing and  administration.  The Company's future success will depend
upon its ability to attract, retain and motivate highly qualified employees, who
are in great  demand.  The Company  believes  that its  employee  relations  are
excellent.


Property

     The Company maintains its corporate headquarters in 23,000 square feet of a
building  located in Phoenix,  Arizona pursuant to a lease that expires in 2000,
and its  principal  manufacturing  operations  in an 85,000 square foot building
located in  Chandler,  Arizona  pursuant  to a lease that  expires in 2008.  The
Company also leases sales and support  offices in a total of 28 locations in the
United  States  and two  locations  overseas.  The  Company  believes  that  its
facilities  will be adequate to meet its current  needs and that  additional  or
alternative  space will be available as necessary in the future on  commercially
reasonable terms. See "Risk Factors--Management of Growth; Implementation of New
Management Information Systems."


Legal Proceedings

     The Company is involved from time to time in  litigation  incidental to its
business.  The Company believes that the outcome of current  litigation will not
have a material adverse effect upon its business, financial condition or results
of operations and will not disrupt the normal operations of the Company.

                                       32

<PAGE>


                                   MANAGEMENT

<TABLE>
     The executive officers and directors of the Company are as follows:


<CAPTION>
            Name               Age                               Position
- ----------------------------- -----   ---------------------------------------------------------------
<S>                            <C>    <C>
Steven G. Mihaylo   .........  54     Chairman of the Board of Directors and Chief Executive Officer
Thomas C. Parise    .........  43     President and Chief Operating Officer
Craig W. Rauchle    .........  42     Executive Vice President
Ross McAlpine    ............  46     President of Inter-Tel Leasing, Inc.
Kurt R. Kneip    ............  35     Vice President, Chief Financial Officer, Secretary and
                                        Assistant Treasurer
J. Robert Anderson  .........  61     Director
Gary Edens    ...............  55     Director
Maurice H. Esperseth   ......  72     Director
C. Roland Haden  ............  57     Director
Norman Stout  ...............  40     Director
</TABLE>

     Mr.  Mihaylo,  the  founder of the  Company,  has served as Chairman of the
Board of Directors of the Company since  September  1983 and as Chief  Executive
Officer of the  Company  since its  inception  in July  1969.  From July 1969 to
September  1983 and from March 1984 to December 1994, Mr. Mihaylo also served as
President  of the  Company,  and from July 1969 to October 1982 he served as the
Company's Chairman of the Board of Directors.  Mr. Mihaylo also is a director of
MicroAge, Inc. and Microtest, Inc.

     Mr. Parise was elected President and Chief Operating Officer of the Company
in December  1994.  Since 1986,  he has been  President of Inter-Tel  Integrated
Services,  Inc., a wholly  owned  research and  development,  manufacturing  and
distribution subsidiary of the Company. From 1986 to December 1994, he served as
Senior Vice  President  of the  Company.  From joining the Company in 1981 until
1986, Mr. Parise served in various sales  management  and executive  capacities.
Mr. Parise also is a director of Globe Business Resources, Inc. He has also been
a director of the American  Electronics  Association  (the "AEA") since 1995 and
was elected to the Executive Committee of the AEA in 1997.

     Mr.  Rauchle was elected  Executive Vice President in December 1994. He had
served as Senior Vice  President  of the  Company,  and serves as  President  of
Inter-Tel  Technologies,  Inc., a wholly-owned  sales subsidiary of the Company.
Mr. Rauchle joined the Company in 1979 as a Branch General Manager of the Denver
direct sales office and in 1983 was appointed  Central Region Vice President and
subsequently the Western Regional Vice President.

     Mr. McAlpine has served as President of Inter-Tel  Leasing,  Inc., a wholly
owned  subsidiary  of the  Company,  since April 1993.  From April 1992 to April
1993, Mr.  McAlpine  served as the Company's  Treasurer,  and from April 1991 to
April  1992  served as Vice  President  of  Inter-Tel  Communications,  Inc.,  a
wholly-owned  subsidiary  of the Company.  He joined the Company in July 1991 in
connection  with the Company's  acquisition of  Telecommunications  Specialists,
Inc., a  telecommunications  firm. Prior to joining Inter-Tel,  Mr. McAlpine was
employed in the leasing and financial services industry for 17 years.

     Mr. Kneip has served as Vice President and Chief  Financial  Officer of the
Company since September 1993, and as Secretary and Treasurer since October 1994.
He joined the  Company in May 1992 as  Director of  Corporate  Tax,  after being
employed for seven years with the accounting firm of Ernst & Young. Mr. Kneip is
a Certified  Public  Accountant,  and holds a B.S. in Commercial  Economics from
South Dakota State  University and a masters degree in Professional  Accountancy
from the University of South Dakota.

     Mr.  Anderson  was elected as a director  of the Company in February  1997.
From 1991 to 1994, Mr. Anderson served as Vice Chairman, Chief Financial Officer
and a director  of the  Grumman  Corporation.  From 1983 to 1991,  Mr.  Anderson
served in various senior management capacities for the Firestone Tire and Rubber
Company,  including  Vice Chairman of  Bridgestone/Firestone,  Inc. from 1989 to
1991. Mr. Anderson worked for Ford Motor Company from 1963 to 1983, serving from
1978 to 1983 as President of the Ford Motor Land  Development  Corporation.  Mr.
Anderson  retired in 1994,  and has been an active  leader in various  business,
civic and philanthropic organizations.

                                       33

<PAGE>


     Mr. Edens was elected as a director of the Company in October  1994.  He is
presently the President of the Hanover Companies, Inc., an investment firm. From
1970 to October,  he served in various  executive  management  capacities in the
broadcasting  media industry,  including Chairman and Chief Executive Officer of
Edens  Broadcasting,  Inc.  from 1984 to 1994.  Mr. Edens is an active leader in
various business, civic and philanthropic organizations.

     Mr.  Esperseth has been a director of the Company  since October 1986.  Mr.
Esperseth  joined the Company in January 1983 as Senior Vice  President-Research
and  Development,  after a 32-year  career with GTE  Corporation,  and served as
Executive Vice President of Inter-Tel from 1986 to 1988. Mr.  Esperseth  retired
as an officer of the Company in December 1989.

     Dr. Haden has been a director of the Company since 1983. Dr. Haden has been
Vice  Chancellor and Dean of  Engineering  of Texas A&M  University  since 1993.
Previously, he served as Vice Chancellor of Louisiana State University from 1991
to 1993,  Dean of the College of  Engineering  and  Applied  Sciences at Arizona
State  University  from 1989 to 1991,  Vice  President  for Academic  Affairs at
Arizona  State  University  from  1987  to  1988,  and  Dean of the  College  of
Engineering and Applied  Sciences at Arizona State University from 1978 to 1987.
Dr. Haden holds a doctoral degree in Electrical  Engineering from the University
of Texas and has served on the faculties of the University of Oklahoma and Texas
A&M University.

     Mr. Stout was elected a director of the Company in October 1994.  Mr. Stout
has been President of Superlite  Block, a manufacturer of concrete block,  since
February  1993.  Since  1996 Mr.  Stout has also  been  President  of  Oldcastle
Architectural  West,  the  parent  company  of  Superlite  Block and four  other
concrete  product  plants.  Mr.  Stout was  employed by  Bouhem-Fields,  Inc. of
Dallas,  Texas, a manufacturer of crushed stone, as Chief Executive Officer from
1990 to 1993 and as Chief Financial Officer from 1986 to 1990.  Previously,  Mr.
Stout was a Certified Public Accountant with Coopers & Lybrand.

     The Board of Directors has an Audit Committee and a Compensation Committee.
The Audit Committee,  consisting of Messrs.  Anderson,  Stout and Esperseth,  is
charged with  reviewing the Company's  annual audit and meets with the Company's
independent  auditors to review the  Company's  internal  controls and financial
management  practices.   The  Compensation  Committee,   consisting  of  Messrs.
Esperseth,  Edens and Stout,  recommends to the Board of Directors  compensation
for the  Company's  key employees  and  administers  the Company's  stock option
plans.

                                       34

<PAGE>


                              SELLING SHAREHOLDERS

<TABLE>
     The following table sets forth certain information regarding the beneficial
ownership  of the  Company's  Common  Stock as of  September  30,  1997,  and as
adjusted to reflect the sale of Common  Stock  offered  hereby,  of each Selling
Shareholder:


<CAPTION>
                                                                                                Shares Beneficially
                                Shares Beneficially           Including                             Owned After
                            Owned Prior to Offering(1)      All Vested and       Number             Offering(1)
                           -----------------------------       Unvested        of Shares     -------------------------
      Name of Owner          Number       Percentage(2)        Options         Offered(3)      Number       Percent(2)
- -------------------------- -----------   ---------------   ----------------   ------------   -----------   -----------
<S>                        <C>                <C>             <C>                <C>        <C>              <C>
Steven G. Mihaylo   ...... 5,500,000          23.4%           5,900,000            --       5,500,000        20.7%
Thomas C. Parise    ......  187,380             *               561,380          40,000       147,380           *
Craig W. Rauchle    ......   97,900             *               385,400          30,000        67,900           *

<FN>
- ------------
*    Less than 1%

(1)  Unless  otherwise  indicated  below,  the persons and entities named in the
     table have sole voting and sole investment power with respect to all shares
     beneficially  owned,  subject to community  property laws where applicable.
     Shares of Common Stock  subject to options or warrants  that are  currently
     exercisable or exercisable  within 60 days of September 30, 1997 are deemed
     to be outstanding and to be  beneficially  owned by the person holding such
     options for the  purpose of  computing  the  percentage  ownership  of such
     person but are not treated as outstanding  for the purpose of computing the
     percentage ownership of any other person.

(2)  Based  on  23,553,942  shares  of  Common  Stock  outstanding  prior to the
     offering and 26,553,942 shares outstanding after the offering.

(3)  Assumes  that the  Underwriters'  over-allotment  option to  purchase up to
     340,000 shares from Steven G. Mihaylo,  72,951 shares from Thomas C. Parise
     and 47,549 shares from Craig W. Rauchle has not been exercised.
</FN>
</TABLE>

                                       35

<PAGE>


                                  UNDERWRITING

     NationsBanc  Montgomery  Securities,  Inc.,  Donaldson,  Lufkin &  Jenrette
Securities  Corporation  and  Jefferies  &  Company,  Inc.  (collectively,   the
"Underwriters")  have severally agreed,  subject to the terms and conditions set
forth in the  Underwriting  Agreement,  to  purchase  from the  Company  and the
Selling  Shareholders  the number of shares of Common Stock as  indicated  below
opposite  their   respective  names  at  the  public  offering  price  less  the
underwriting  discount  set  forth on the  cover  page of this  Prospectus.  The
Underwriting  Agreement  provides that the obligations of the  Underwriters  are
subject to certain conditions precedent, and that the Underwriters are committed
to purchase all of such shares if any are purchased.


     Underwriters                                               Number of Shares
     -------------                                              ----------------
     NationsBanc Montgomery Securities, Inc.   .................
     Donaldson, Lufkin & Jenrette Securities Corporation   .....
     Jefferies & Company, Inc.  ................................   ---------
           Total    ............................................   3,070,000
                                                                   =========


     The Underwriters have advised the Company and the Selling Shareholders that
they propose  initially to offer the Common Stock to the public on the terms set
forth on the  cover  page of this  Prospectus.  The  Underwriters  may  allow to
selected  dealers a concession  of not more than  $________  per share,  and the
Underwriters may allow, and such dealers may reallow, a concession not more than
$________ per share to certain other dealers.  After the offering,  the offering
price and other  selling  terms may be changed by the  Underwriters.  The Common
Stock is offered subject to receipt and acceptance by the  Underwriters,  and to
certain other conditions, including the right to reject orders in whole or part.

     The  Selling  Shareholders  have  granted  an  option  to the  Underwriters
exercisable  during  the  30-day  period  after the date of this  Prospectus  to
purchase   up  to   460,500   additional   shares  of  Common   Stock  to  cover
over-allotments,  if any, at the same price per share as the  initial  3,070,000
shares to be purchased by the Underwriters.  To the extent that the Underwriters
exercise this option,  each of the  Underwriters  will be committed,  subject to
certain conditions, to purchase such additional shares in approximately the same
proportion as set forth in the above table.  The  Underwriters may purchase such
shares only to cover over-allotments made in connection with this offering.

     The  Underwriting  Agreement  provides  that the  Company  and the  Selling
Shareholders   will   indemnify  the  several   Underwriters   against   certain
liabilities,  including  civil  liabilities  under the  Securities  Act, or will
contribute  to  payments  the  Underwriters  may be  required to make in respect
thereof.

     The Company's executive officers,  including the Selling Shareholders,  who
will collectively hold an aggregate of approximately  5,577,000 shares of Common
Stock after this  offering,  have agreed that without the consent of NationsBanc
Montgomery Securities,  Inc., they will not, directly or indirectly offer, sell,
contract  to sell or  otherwise  dispose  of any  shares of Common  Stock or any
securities  convertible  into or  exchangeable  therefor for a period of 90 days
from the date of this  Prospectus.  The Company has agreed that, for a period of
90 days from the date of this  Prospectus,  it will  not,  without  the  written
consent of  NationsBanc  Montgomery  Securities,  Inc.,  directly or indirectly,
offer, sell, contract to sell or otherwise dispose of any shares of Common Stock
or any  securities,  convertible or  exchangeable  therefor,  subject to limited
exceptions.

     Until the  distribution  of the  Common  Stock is  completed,  rules of the
Commission may limit the ability of the  Underwriters  and certain selling group
members to bid for and  purchase  the Common  Stock.  As an  exception  to these
rules,  an  Underwriter  is  permitted  to engage in certain  transactions  that
stabilize the price of the Common Stock.  Such  transactions  consist of bids or
purchases  for the purpose of pegging,  fixing or  maintaining  the price of the
Common Stock. If the Underwriters create a short position in the Common Stock in
connection  with the  offering,  i.e.,  if they sell more shares of Common Stock
than are set forth on the cover page of this  Prospectus,  the  Underwriters may
reduce that short  position by purchasing  Common Stock in the open market.  The
Underwriters  may also elect to reduce any short  position by exercising  all or
part of the over-allotment option described above. The Underwriters may also

                                       36

<PAGE>


impose  a  penalty  bid on certain selling group members. This means that if the
Underwriters  purchase shares of Common Stock in the open market to reduce their
short  position  or to stabilize the price of the Common Stock, they may reclaim
the  amount  of  the  selling concession from the selling group members who sold
those shares as part of the offering.

     In general,  purchases of a security for the purpose of stabilization or to
reduce a short  position could cause the price of the security to be higher than
it might be in the absence of such  purchases.  The  imposition of a penalty bid
might also have an effect on the price of a security  to the extent that it were
to  discourage  resales of the  security.  Neither  the  Company  nor any of the
Underwriters  makes any  representation  or  predictions  as to the direction or
magnitude of any effect that the  transactions  described  above may have on the
price of the Common  Stock.  In  addition,  neither  the  Company nor any of the
Underwriters makes any representation  that the Underwriters will engage in such
transactions or that such transactions, once commenced, will not be discontinued
without notice.

     In  connection  with this  offering,  certain  Underwriters  may  engage in
passive market making  transactions  in the Common Stock on the Nasdaq  National
Market  immediately  prior to the  commencement  of sales in this  offering,  in
accordance  with Rule 103 under  Regulation M. Passive market making consists of
displaying bids on the Nasdaq National Market that are limited by the bid prices
of independent market makers and completing  purchases in response to order flow
at prices  limited by such bids. Net purchases by a passive market maker on each
day are limited to a specified  percentage of the passive market maker's average
daily trading  volume in the Common Stock during a specified  period and must be
discontinued  for any day in which such limit is reached.  Passive market making
may  stabilize  the market price of the Common Stock at a level above that which
might otherwise prevail and, if commenced, may be discontinued at any time.

     From time to time,  certain of the  Underwriters  or their  affiliates have
provided,  and may  continue  to  provide,  investment  banking  services to the
Company.


                                  LEGAL MATTERS

     The validity of the shares of Common Stock offered hereby and certain other
matters  relating  to Arizona law will be passed upon for the Company by John L.
Gardner,  the Company's  General Counsel.  Certain other legal matters are being
passed  upon for the  Company and the  Selling  Shareholders  by Wilson  Sonsini
Goodrich & Rosati,  Professional Corporation,  Palo Alto, California.  Pillsbury
Madison & Sutro LLP,  San  Francisco,  California,  is acting as counsel for the
Underwriters in connection with certain legal matters  relating to the shares of
Common Stock offered hereby.


                                     EXPERTS

     The  consolidated  financial  statements  of the Company  appearing  in the
Company's  Annual Report on Form 10-K for the year ended  December 31, 1996 have
been audited by Ernst & Young LLP, independent  auditors,  as set forth in their
report  thereon  included  therein and  incorporated  herein by reference.  Such
consolidated  financial  statements  are  incorporated  herein by  reference  in
reliance  upon such report  given upon the  authority of such firm as experts in
accounting and auditing.

                                       37

<PAGE>


================================================================================
     No dealer,  sales representative or any other person has been authorized to
give any  information  or to make any  representations  in connection  with this
offering other than those contained in this  Prospectus,  and, if given or made,
such  information  or  representations  must not be relied  upon as having  been
authorized by the Company,  any Selling  Shareholder or the  Underwriters.  This
Prospectus  does not constitute an offer to sell or a solicitation  of any offer
the shares of Common Stock to which it relates or an offer to, or a solicitation
of, any person in any jurisdiction  where such an offer or solicitation would be
unlawful.  Neither the delivery of this  Prospectus  nor any sale made hereunder
shall,  under any  circumstances,  create an implication  that there has been no
change in the affairs of the  Company or that  information  contained  herein is
correct as of any time subsequent to the date hereof.


                               ------------------
                                TABLE OF CONTENTS
                               ------------------

                                                           Page
                                                           -----
          Available Information   .....................      2
          Information Incorporated by Reference  ......      2
          Prospectus Summary   ........................      3
          Risk Factors   ..............................      5
          Use of Proceeds   ...........................     14
          Dividend Policy   ...........................     14
          Price Range of Common Stock   ...............     14
          Capitalization ..............................     15
          Selected Consolidated Financial Data   ......     16
          Management's Discussion and Analysis
             of Financial Condition and Results of
             Operations  ..............................     17
          Business ....................................     22
          Management  .................................     33
          Selling Shareholders ........................     35
          Underwriting   ..............................     36
          Legal Matters  ..............................     37
          Experts  ....................................     37

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

                                3,070,000 Shares


                                [INTER-TEL LOGO]


                                  Common Stock


                              ---------------------
                                   PROSPECTUS
                              ---------------------

                             NATIONSBANC MONTGOMERY
                                SECURITIES, INC.


                          DONALDSON, LUFKIN & JENRETTE
                             SECURITIES CORPORATION


                           JEFFERIES & COMPANY, INC.


                                 ________, 1997


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


<PAGE>


                                     PART II

                     INFORMATION NOT REQUIRED IN PROSPECTUS



ITEM 14. Other Expenses of Issuance and Distribution

     The following  table sets forth the various  costs and expenses  payable by
the Company, other than underwriting discounts and commissions,  of the sale and
distribution of the securities  being  registered.  All of the amounts shown are
estimates except the Securities and Exchange  Commission  registration  fee, the
Nasdaq Stock Market listing fee and the NASD filing fee.


         SEC Registration Fee    ...............  $ 23,805
         NASD Filing Fee   .....................     8,356
         Nasdaq Stock Market Listing Fee  ......    17,500
         Blue Sky Fees and Expenses    .........     5,000
         Legal Fees and Expenses    ............   200,000
         Accounting Fees and Expenses  .........    30,000
         Directors' and Officers' Insurance  ...   300,000
         Printing    ...........................    70,000
         Transfer Agent and Registrar Fees   ...    10,000
         Miscellaneous  ........................    35,339
                                                  ---------
            Total    ...........................  $700,000
                                                  =========


ITEM 15. Indemnification of Directors and Officers

     The Company's  Restated  Articles of  Incorporation  limit,  to the maximum
extent  permitted  by Arizona law,  the  personal  liability  of  directors  for
monetary  damages  for  breach  of their  fiduciary  duties as a  director.  The
Company's  Restated  Articles of  Incorporation  provide that the Company  shall
indemnify  its officers and  directors to the fullest  extent  permitted by law,
subject to certain  exceptions.  The Company has  entered  into  indemnification
agreements with its officers and directors  containing  provisions  which are in
some respects broader than the specific indemnification  provisions contained in
the Arizona Revised  Statutes.  The  indemnification  agreements may require the
Company,  among other things,  to indemnify such officers and directors  against
certain  liabilities  that may  arise by reason of their  status or  service  as
directors or officers (other than liabilities arising from willful misconduct of
a  culpable  nature),  to advance  their  expenses  incurred  as a result of any
proceeding  against  them as to which they could be  indemnified,  and to obtain
directors'  and  officers'  insurance,  if available on  reasonable  terms.  The
Company  believes  that these  agreements  are  necessary  to attract and retain
qualified persons as directors and officers.

     At present,  there is no pending  litigation  or  proceeding  involving any
director,  officer,  employee or agent of the Company where indemnification will
be required or permitted.  The Company is not aware of any threatened litigation
or proceeding which may result in a claim for such indemnification.

     The  Company  currently   maintains   directors'  and  officers'  liability
insurance.

     Reference  is  also  made  to  Section  11 of  the  Underwriting  Agreement
contained  in Exhibit 1.1 hereto,  indemnifying  officers  and  directors of the
Registrant against certain liabilities.

                                      II-1

<PAGE>


ITEM 16. Exhibits


Exhibit
 Number                          Description
- -------   ----------------------------------------------------------------------
 1.1     Form of Underwriting Agreement.+
 4.1     Articles of Amendment to Articles of Incorporation of Registrant.
 5.1     Opinion of John L.  Gardner,  General  Counsel,  regarding  legality of
           securities being registered.
23.1     Consent of Ernst & Young LLP.
23.2     Consent of John L. Gardner, General Counsel (included in Exhibit 5.1).
24.1     Power of Attorney (see page II-3).+

- ------------
+    Previously filed.


ITEM 17. Undertakings

     The  undersigned   Registrant  hereby  undertakes  that,  for  purposes  of
determining  any  liability  under  the  Securities  Act,  each  filing  of  the
Registrant's  annual  report  pursuant to Section  13(a) or Section 15(d) of the
Securities  Exchange Act that is incorporated  by reference in the  Registration
Statement  shall be deemed to be a new  Registration  Statement  relating to the
securities  offered  therein,  and the offering of such  securities at that time
shall be deemed to be the initial bona fide offering thereof.

     Insofar as indemnification for liabilities arising under the Securities Act
may  be  permitted  to  directors,  officers  and  controlling  persons  of  the
Registrant pursuant to provisions of the Company's Articles of Incorporation and
Bylaws, the Arizona Revised Statutes,  the Underwriting  Agreement or otherwise,
the  Registrant  has been  advised  that in the  opinion of the  Securities  and
Exchange  Commission such  indemnification is against public policy as expressed
in the  Securities  Act and is,  therefore,  unenforceable.  In the event that a
claim for  indemnification  against such liabilities  (other than the payment by
the  Registrant  of  expenses  incurred  or  paid  by  a  director,  officer  or
controlling  person of the Registrant in the  successful  defense of any action,
suit or proceeding) is asserted by such director,  officer or controlling person
in connection with the securities  being  registered  hereunder,  the Registrant
will,  unless in the  opinion of its counsel the  question  has been  settled by
controlling  precedent,  submit  to a  court  of  appropriate  jurisdiction  the
question  of whether  such  indemnification  by it is against  public  policy as
expressed in the Securities  Act and will be governed by the final  adjudication
of such issue.

     The undersigned Registrant hereby undertakes that:

         (1) For purposes of determining any liability under the Securities Act,
     the information  omitted from the form of Prospectus  filed as part of this
     Registration  Statement in reliance  upon Rule 430A and contained in a form
     of Prospectus filed by the Registrant  pursuant to Rule 424(b)(1) or (4) or
     497(h)  under  the  Securities  Act  shall  be  deemed  to be  part of this
     Registration Statement as of the time it was declared effective.

         (2) For the purpose of determining  any liability  under the Securities
     Act, each post-effective amendment that contains a form of Prospectus shall
     be deemed to be a new  Registration  Statement  relating to the  securities
     offered therein,  and the offering of such securities at that time shall be
     deemed to be the initial bona fide offering thereof.

                                      II-2

<PAGE>


                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, as amended, the
Registrant, Inter-Tel,  Incorporated, a corporation organized and existing under
the law of the State of Arizona,  certifies  that it has  reasonable  grounds to
believe  that it meets all of the  requirements  for  filing on Form S-3 and has
duly caused this  Amendment  to the  Registration  Statement to be signed on its
behalf by the undersigned,  thereunto duly  authorized,  in the City of Phoenix,
State of Arizona, on November 20, 1997.


                                        Inter-Tel, Incorporated


                                        By: /s/ KURT R. KNEIP
                                           ------------------------------------
                                           Kurt R. Kneip,
                                           Chief Financial Officer


<TABLE>
     Pursuant to the  requirements  of the  Securities  Act of 1933, as amended,
this  Amendment  to the  Registration  Statement  has been  signed  below by the
following persons in the capacities and on the dates indicated:


<CAPTION>
           Signature                                  Title                               Date
- -------------------------------   ----------------------------------------------   ------------------
<S>                               <C>                                               <C>
           *                      Chairman and Chief Executive Officer              November 20, 1997
- -------------------------           (Principal Executive Officer)
  Steven G. Mihaylo

 /s/ KURT R. KNEIP                Chief Financial Officer (Principal Financial      November 20, 1997
- -------------------------           Officer and Principal Accounting Officer)
    Kurt R. Kneip

           *                      Director                                          November 20, 1997
- -------------------------
    Gary D. Edens

           *                      Director                                          November 20, 1997
- -------------------------
  Maurice H. Esperseth

           *                      Director                                          November 20, 1997
- -------------------------
    C. Roland Haden

           *                      Director                                          November 20, 1997
- -------------------------
     Norman Stout

           *                      Director                                          November 20, 1997
- -------------------------
   J. Robert Anderson

*By: /s/ KURT R. KNEIP
- -------------------------
      Kurt R. Kneip
   (Attorney-in-Fact)
</TABLE>

                                                 II-3

<PAGE>


                             Inter-Tel, Incorporated

                       REGISTRATION STATEMENT ON FORM S-3

                                  EXHIBIT INDEX

                                                                    Sequentially
 Exhibit                                                              Numbered
 Number                   Description                                   Page
- -------  ----------------------------------------------------     -------------
 1.1     Form of Underwriting Agreement.+
 4.1     Articles of Amendment to  Articles of Incorporation of
           Registrant.
 5.1     Opinion of John L. Gardner, General Counsel, regarding
           legality of securities being registered.
23.1     Consent of Ernst & Young LLP.
23.2     Consent of John  L. Gardner, General Counsel (included
           in Exhibit 5.1).
24.1     Power of Attorney (see page II-3).+

- ------------
+    Previously filed.

                                      II-4



                              ARTICLES OF AMENDMENT

                                       TO

                            ARTICLES OF INCORPORATION

                                       OF

                             INTER-TEL, INCORPORATED


Pursuant to the provisions of Section  10-061,  Arizona  Revised  Statutes,  the
undersigned  corporation  adopts the  following  Articles  of  Amendment  to its
Articles of Incorporation.

FIRST:   The name of the corporation is Inter-Tel, Incorporated.

SECOND:  Attached hereto as Exhibit A is the text of each amendment adopted.

THIRD:   The  amendment does  not provide  for an  exchange, reclassification or
         cancellation of issued shares.

FOURTH:  The amendment was adopted the 14th day of November 1997.

FIFTH:   The amendment was approved  by the  shareholders.  There is  one voting
         group eligible  to vote on the  amendment.  The  designation of  voting
         groups entitled to vote separately on the amendment was adopted and the
         votes cast for and against the amendment were as follows.

         The voting group consisting of 23,563,464  outstanding shares of Common
Stock is entitled to 23,563,464  votes.  There were 11,969,168  votes present at
the meeting. The voting group cast 9,899,140 votes for approval, 1,751,065 votes
against  approval of the  amendment and 318,963  abstentions  from voting on the
amendment to article V paragraph 1. The number of votes cast for approval of the
amendment was sufficient for approval by the voting group.

         DATED AS OF THIS November 18, 1997.

                                             Inter-Tel, Incorporated


                                             By: /s/ John Abbot
                                                -----------------------

                                             Title:  Treasurer
                                                   --------------------
Attest:


/s/ John L. Gardner
- ------------------------
John L. Gardner, Assistant Secretary
<PAGE>
                                ACKNOWLEDGEMENTS


State of Arizona           )
                           )  ss.
County of Maricopa         )



         The foregoing  instrument was  acknowledged  before me this 18th day of
November,  1997,  by  John  Abbott  of  Inter-Tel,   Incorporated,   an  Arizona
corporation, on behalf of the corporation.



                                           /s/ Dina Lansdell
                                           ---------------------------------
                                           Notary Public


My Commission Expires: 6-11-99


                                ACKNOWLEDGEMENTS


State of Arizona           )
                           )  ss.
County of Maricopa         )


         The foregoing  instrument was  acknowledged  before me this 18th day of
November,  1997,  by John L.  Gardner  of  Inter-Tel,  Incorporated,  an Arizona
corporation, on behalf of the corporation.



                                           /s/ Dina Lansdell
                                           ---------------------------------
                                           Notary Public
<PAGE>
                                   EXHIBIT "A"
                     AMENDMENT TO ARTICLES OF INCORPORATION


The first paragraph of Article V of the Articles of  Incorporation of Inter-Tel,
Incorporated is hereby amended to read as follows:

                                    ARTICLE V

This Corporation is authorized to issue only one class of shares, which shall be
designated  Common  Shares.  The  total  authorized  number  of such  shares  is
100,000,000.

                                                               
                                                               


November 19, 1997

Inter-Tel, Incorporated
120 N. 44th Street, Suite 200
Phoenix, Arizona 85034-1822

Re:      Registration Statement on Form S-3

Ladies and Gentlemen:

I have  examined  the  Registration  Statement  on Form S-3 filed by  Inter-Tel,
Incorporated,  an Arizona  corporation (the "Company"),  with the Securities and
Exchange  Commission (the "Commission") on October 31, 1997, and Amendment No. 1
to the Company's Registration Statement on Form S-3 filed with the Commission on
or about November 19, 1997  (collectively,  the  "Registration  Statement"),  in
connection with the  registration  under the Securities Act of 1933, as amended,
of 3,530,500  shares of the Company's Common Stock, no par value (the "Shares"),
which amount includes  3,000,000  Shares to be sold by the Company (the "Company
Shares")  and,  530,500  Shares  to be  sold  by  certain  selling  shareholders
(including an option to purchase  460,500 Shares granted to the  underwriters to
cover over-allotments,  if any (the "Selling Shareholder  Shares")).  The Shares
are to be sold to the  underwriters for resale to the public as described in the
Registration  Statement and pursuant to the  Underwriting  Agreement filed as an
exhibit  thereto.  As  general  counsel  to the  Company,  I have  examined  the
proceedings  proposed to be taken in  connection  with said sale and issuance of
the Shares.

It is my opinion  that the  Company  Shares,  when issued and sold in the manner
described in the  Registration  Statement  and paid for by the  underwriters  in
accordance with the Underwriting Agreement,  will be legally and validly issued,
fully  paid and  nonassessable.  Further,  it is my  opinion  that  the  Selling
Shareholder  Shares have been legally and validly  issued and are fully paid and
nonassessable.

I  consent  to  the  use of  this  opinion  as an  exhibit  to the  Registration
Statement,  and further consent to the use of my name wherever  appearing in the
Registration  Statement,  including the Prospectus  constituting a part thereof,
and any amendment or amendments thereto.


/s/ John L. Gardner
- -------------------
John L. Gardner
General Counsel



                                                                   EXHIBIT 23.1


                        CONSENT OF INDEPENDENT AUDITORS

     We  consent  to the  reference  to our firm  under the  captions  "Selected
Consolidated   Financial   Data"  and  "Experts"  in  Amendment  No.  1  to  the
Registration  Statement (Form S-3 No.  333-39221) and the related  Prospectus of
Inter-Tel,  Incorporated  for the registration of 3,530,500 shares of its common
stock and to the incorporation by reference therein of our report dated February
28, 1997 with respect to the consolidated  financial  statements and schedule of
Inter-Tel,  Incorporated included in its Annual Report on Form 10-K for the year
ended December 31, 1996, filed with the Securities and Exchange Commission.


                                             /s/ ERNST & YOUNG LLP


November 20, 1997
Phoenix, Arizona



© 2022 IncJournal is not affiliated with or endorsed by the U.S. Securities and Exchange Commission