<PAGE>


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

                                 UNITED STATES
                      SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D.C. 20549
                              -----------------

                                  FORM 10-Q

(MARK ONE)
    [X] QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE
        SECURITIES EXCHANGE ACT OF 1934
            FOR THE QUARTERLY PERIOD ENDED MARCH 31, 1998
                                      OR
    [ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE
        SECURITIES EXCHANGE ACT OF 1934
            FOR THE TRANSITION PERIOD FROM                    TO

                       COMMISSION FILE NUMBER: 0-27594

                         TRESCOM INTERNATIONAL, INC.
            (Exact Name of Registrant as Specified in Its Charter)


            FLORIDA                                       65-0454571
(State or Other Jurisdiction of             (I.R.S. Employer Identification No.)
Incorporation or Organization)                              

200 EAST BROWARD BOULEVARD, FT. LAUDERDALE, FLORIDA                      33301
 (Address of Principal Executive Offices)                             (Zip Code)

                                (954) 763-4000
             (Registrant's Telephone Number, Including Area Code)

       ----------------------------------------------------------------
  (Former Name, Former Address and Former Fiscal Year, if Changed Since Last
                                   Report)

    Indicate  by check mark  whether the  registrant:  (1) has filed all reports
required to be filed by Section 13 or 15(d) of the  Securities  Exchange  Act of
1934  during  the  preceding  12 months  (or for such  shorter  period  that the
registrant was required to file such reports),  and (2) has been subject to such
filing requirements for the past 90 days. [ X ] Yes [ ] No

    Indicate the number of shares outstanding of each of the issuer's classes of
common stock, as of the latest practicable date.

                 CLASS                                OUTSTANDING
                 -----                                -----------
        Common Stock, par value                  12,262,791 shares on
           $0.0419 per share                          May 6, 1998

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

<PAGE>

                         TRESCOM INTERNATIONAL, INC.

                                    INDEX
                                    -----

PART I.  FINANCIAL INFORMATION
------------------------------
                                                                        PAGE NO.
                                                                        --------
ITEM 1.   Financial Statements:

          Consolidated Balance Sheets as of March 31, 1998 (Unaudited)  
          and December 31, 1997.........................................    1

          Unaudited Consolidated Statements of Operations for the three
           months ended March 31, 1998 and 1997 ........................    2

          Unaudited Consolidated Statement of Shareholders' Equity at     
           March 31, 1998 ..............................................    3

          Unaudited Consolidated Statements of Cash Flows for the three    
           months ended March 31, 1998 and 1997.........................    4

          Notes to Unaudited Consolidated Financial Statements..........    5

ITEM 2.   Management's Discussion and Analysis of Financial Condition    
          and Results of Operations.....................................    8

ITEM 3.   Quantitative and Qualitative Disclosures About Market Risk....    9


PART II.  OTHER INFORMATION
---------------------------

ITEM 1.   Legal Proceedings.............................................   10

ITEM 2.   Changes in Securities and Use of Proceeds.....................   10

ITEM 3.   Default Upon Senior Securities................................   10
                
ITEM 4.   Submission of Matters to a Vote of Security Holders...........   10

ITEM 5.   Other Information.............................................   10

ITEM 6.   Exhibits and Reports on Form 8-K..............................   10

SIGNATURES..............................................................   12

<PAGE>

                                     PART I
                              FINANCIAL INFORMATION

ITEM 1.     FINANCIAL STATEMENTS.
            --------------------

                           TRESCOM INTERNATIONAL, INC.
                           CONSOLIDATED BALANCE SHEETS

                                     ASSETS
                                                          MARCH 31, DECEMBER 31,
                                                            1998       1997
                                                         -----------------------
                                                          (Unaudited)
                                                         (In thousands, except
                                                             share and per
                                                               share data)
Current assets:                                                   
  Cash...................................................  $    102    $  1,481
                                                                 
  Accounts and notes receivable, net of allowance
     for doubtful accounts of $7,918 and $8,149,
     respectively........................................    26,956      31,743
  Other current assets...................................     2,492       2,406
                                                          ---------    --------
Total current assets.....................................    29,550      35,630
Property and equipment, at cost:
  Transmission and communications equipment..............    30,517      29,720
  Furniture, fixtures and other..........................    10,272       9,620
                                                          ---------    --------
                                                             40,789      39,340
  Less accumulated depreciation and amortization.........   (10,894)     (9,668)
                                                          ---------    --------
                                                             29,895      29,672
Other assets:
  Customer bases, net of accumulated amortization of
    $2,650 and $2,385, respectively......................     3,010       3,274
  Excess of cost over net assets of businesses acquired,
    net of accumulated amortization of $3,830 and $3,508,
    respectively.........................................    38,596      38,826
  Other..................................................       940       1,027
                                                           --------    --------
Total assets.............................................  $101,991    $108,429
                                                           ========    ========

                      LIABILITIES AND SHAREHOLDERS' EQUITY

Current liabilities:
  Accounts payable.......................................  $    907    $  1,237
  Accrued network costs..................................    18,667      19,497
  Other accrued expenses.................................     4,733       6,365
  Long-term obligations due within one year..............     1,299       1,098
  Deferred revenue and other current liabilities.........     1,762       1,689
                                                           --------    --------
Total current liabilities................................    27,368      29,886
Long-term obligations....................................    19,842      19,593

Shareholders' equity:
  Preferred stock, $.01 par value; 1,000,000 shares
     authorized; no shares issued and outstanding........        --          --
   Common stock, $.0419 par value; 50,000,000 shares
     authorized; 12,161,844 shares issued and outstanding;
     12,104,960 shares issued and outstanding ...........       508         505
  Deferred compensation..................................      (391)       (551)
  Additional paid-in capital.............................   108,497     108,354
  Accumulated deficit....................................   (53,833)    (49,358)
                                                           --------    --------
Total shareholders' equity...............................    54,781      58,950
                                                           --------    --------
Total liabilities and shareholders' equity...............  $101,991    $108,429
                                                           ========    ========

                            See accompanying notes.

                                       1

<PAGE>

                           TRESCOM INTERNATIONAL, INC.
                      CONSOLIDATED STATEMENTS OF OPERATIONS
                                   (UNAUDITED)

                                                    THREE MONTHS ENDED MARCH 31,
                                                        1998          1997
                                                    ----------------------------
                                                        (In thousands, except
                                                           per share data)

Revenues......................................        $  38,137      $  36,143
Cost of services..............................           30,971         27,812
Gross profit..................................            7,166          8,331
Selling, general and administrative...........            9,262          8,108
Depreciation and amortization.................            1,944          1,501
                                                      ---------      ---------
    Operating loss............................           (4,040)        (1,278)
    Interest expense (income), net............              415             (2)
    Other expense, net........................               20             --
                                                      ---------      ---------
Net loss......................................        $  (4,475)     $  (1,276)
                                                      =========      =========

Basic and diluted net loss per share of       
   common stock...............................        $   (0.37)     $   (0.11)
                                                      =========      =========

Weighted average number of shares of common
   stock outstanding..........................           12,146         11,816
                                                      =========      =========


                            See accompanying notes.

                                       2

<PAGE>

                           TRESCOM INTERNATIONAL, INC.
                CONSOLIDATED STATEMENT OF SHAREHOLDERS' EQUITY
                                 (UNAUDITED)


<TABLE>
<CAPTION>

                                                 Common Stock
                                      --------------------------------
                                                            Additional                               Total
                                                              Paid-in    Deferred    Accumulated  Shareholders'
                                          Shares   Amount     Capital  Compensation    Deficit       Equity
                                      ------------------------------------------------------------------------
                                                            (In thousands, except share data)

<S>                                     <C>          <C>       <C>         <C>         <C>             <C>
Balance at December 31, 1997.........   12,104,960   $ 505    $ 108,354   $  (551)    $(49,358)       $ 58,950
Exercise of stock options............       56,884       3          143        --           --             146
Non-cash compensation expense........           --      --           --       160           --             160
Net loss.............................           --      --           --        --       (4,475)         (4,475)
                                       =======================================================================
Balance at March 31, 1998............   12,161,844   $ 508    $ 108,497   $  (391)    $(53,833)       $ 54,781
                                       =======================================================================

</TABLE>

                            See accompanying notes.

                                       3


<PAGE>

                         TRESCOM INTERNATIONAL, INC.
                    CONSOLIDATED STATEMENTS OF CASH FLOWS
                                 (UNAUDITED)

                                                   THREE MONTHS ENDED MARCH 31,
                                                       1998            1997
                                                  ------------------------------
                                                          (In thousands)
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss.......................................       $ (4,475)        $ (1,276)
Adjustments to reconcile net loss to net cash
  used in operating activities:
   Depreciation and amortization...............          1,944            1,501
   Non-cash compensation ......................            160              162
   Changes in operating assets and liabilities,
   net of effects of acquisitions:
     Accounts and notes receivable.............          4,787           (1,770)
     Other current assets......................           (117)            (355)
     Accounts payable..........................           (330)          (1,195)
     Accrued network costs.....................           (830)           2,263
     Other accrued expenses....................         (1,632)          (1,142)
     Deferred revenue and other current
      liabilities..............................            (20)          (1,611)
                                                      --------         --------
Net cash used in operating activities..........           (513)          (3,423)

CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property and equipment............           (840)          (1,080)
Expenditures for line installations............            (13)             (72)
                                                      --------         --------
Net cash used in investing activities..........           (853)          (1,152)

CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from debt.............................             --            2,500
Proceeds from revolving  credit agreement, net.            162               --
Repayment of debt..............................             (4)              (4)
Proceeds from stock option exercise ...........            146                7
Principal payments on capital lease obligations           (317)            (176)
                                                      --------         --------
Net cash (used in) provided by financing
 activities....................................            (13)           2,327
                                                      --------         --------
Net change in cash.............................         (1,379)          (2,248)
Cash at beginning of period....................          1,481            6,020
                                                      --------         --------

Cash at end of period..........................       $    102         $  3,772
                                                      --------         --------

Interest paid..................................       $    466         $    163
                                                      --------         --------

Capital lease obligations incurred.............       $    609         $     --
                                                      --------         --------


                            See accompanying notes.

                                       4

<PAGE>


                          TRESCOM INTERNATIONAL, INC.
              NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS
                     (In thousands, except per share data)

1.    GENERAL

      ORGANIZATION AND BASIS OF PRESENTATION

      TresCom International,  Inc. (together with its subsidiaries  collectively
referred   to   as   the   "Company")   is  a   facilities-based   long-distance
telecommunications  carrier focused on international  long-distance traffic. The
Company offers telecommunications  services,  including direct dial "1 plus" and
toll-free  long  distance,  calling  and debit  cards,  international  toll-free
service,  24-hour bilingual  operator  services,  intra-island  local service in
Puerto  Rico,  private  lines,  frame  relay,   international  inbound  service,
international country to country calling services and international  callthrough
from selected markets.

      These financial statements have been prepared in accordance with generally
accepted  accounting  principles for interim financial  reporting and Securities
and  Exchange   Commission   regulations.   Certain   information  and  footnote
disclosures  normally  included in financial  statements  prepared in accordance
with generally  accepted  accounting  principles  have been condensed or omitted
pursuant to such  regulations.  In the opinion of  management,  the  information
contained  herein  reflects  all  adjustments  necessary  to make the  financial
position,  results of operations  and cash flows for the interim  periods a fair
presentation.  All  such  adjustments  are of a  normal  recurring  nature.  The
preparation  of financial  statements  in  conformity  with  generally  accepted
accounting principles requires management to make estimates and assumptions that
affect  the  reported  amounts  of assets  and  liabilities  and  disclosure  of
contingent  assets and  liabilities at the date of the financial  statements and
the reported amount of revenues and expenses during the reporting period. Actual
results could differ from those estimates.  These financial statements should be
read in conjunction with the Company's Annual Report on Form 10-K for the fiscal
year ended December 31, 1997. The results of operations for the interim  periods
shown are not necessarily indicative of results of operations to be expected for
the entire fiscal year.

2.     SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

      Reference should be made to the Notes to Consolidated Financial Statements
in the Company's  Annual Report on Form 10-K for the fiscal year ended  December
31,  1997,  specifically  Note 2, for a  summary  of the  Company's  significant
accounting policies.

      RECLASSIFICATION

      Certain prior year amounts have been  reclassified to conform with current
year presentation.

      NEW ACCOUNTING PRONOUNCEMENT

      In 1997, the Financial  Accounting  Standards  Board issued  Statement No.
128,  "Earnings Per Share" ("SFAS 128").  SFAS 128 replaced the  calculation  of
primary and fully diluted earnings per share with basic and diluted earnings per
share.  Unlike primary earnings per share, basic earnings per share excludes any
dilutive  effects of  options,  warrants  and  convertible  securities.  Diluted
earnings  per share is very similar to the  previously  reported  fully  diluted
earnings per share.  All  earnings  per share  amounts for all periods have been
presented, and where appropriate, restated to conform with SFAS 128.


                                       5
<PAGE>

                          TRESCOM INTERNATIONAL, INC.
              NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS
                     (In thousands, except per share data)



3.    LONG-TERM OBLIGATIONS

      A summary of long-term obligations is as follows:

                                                      MARCH 31,     DECEMBER 31,
                                                        1998            1997
                                                     ---------------------------
     Revolving Credit Agreement, interest payable
       monthly at rates based upon the lender's 
       commercial lending rate plus 0.5%
       (9.0% at March 31, 1998), maturing in     
       July 2002.................................... $  15,808       $  15,645
     Loans payable to the Small Business
       Administration, bearing interest at 4%,
       due in monthly principal and interest
       payments of $3 through February 2015,
       collateralized by a security agreement
       covering certain assets......................       396             401
     Capital leases bearing interest at rates
       ranging from 9% to 11% and payable in 
       monthly installments totaling $167...........     4,937           4,645
                                                     ---------       ---------
                                                        21,141          20,691
     Less amounts due within one year...............     1,299           1,098
                                                     ---------       ---------
                                                     $  19,842       $  19,593
                                                     =========       =========

     The  Company has a $25,000  revolving  credit and security  agreement (the
"Revolving  Credit  Agreement")  with a commercial bank secured by the Company's
accounts  receivable.  As of March 31, 1998,  availability  under the  Revolving
Credit  Agreement  was  approximately  $19,400  of which  approximately  $16,494
(including  approximately  $686 of letters of credit) had been  utilized.  As of
March 31, 1998,  the Company was in compliance  with all covenants  contained in
the Revolving Credit  Agreement.  See  "Management's  Discussion and Analysis of
Financial   Condition  and  Results  of  Operations  --  Liquidity  and  Capital
Resources."

     Assets  totaling  $609 were  acquired via a capital lease during the first
quarter of 1998.

4.   EARNINGS PER SHARE

     The  following  table  sets  forth  the  computation  of basic and  diluted
earnings per share:

                                                    THREE MONTHS ENDED MARCH 31,
                                                         1998        1997
                                                    ----------------------------
        Numerator:
            Numerator   for  basic  and   diluted
            earnings per share - net loss
            applicable to common stock.............   $  (4,475)  $  (1,276)

        Denominator:
            Denominator  for  basic  and  diluted
            earnings per share - weighted average
            shares.................................      12,146      11,816
                                                      =========   =========

        Basic  and  diluted  net loss per share   
            of common stock........................   $   (0.37)  $   (0.11)
                                                      =========   =========
        
                                       6

<PAGE>



                          TRESCOM INTERNATIONAL, INC.
              NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS
                     (In thousands, except per share data)




5.    PROPOSED MERGER

      In February 1998, the Company entered into a definitive Agreement and Plan
of Merger, which was subsequently amended by Amendments No. 1 and 2, dated as of
April  8,  1998  and  as  of  April  16,   1998,   respectively,   with   Primus
Telecommunications   Group,   Incorporated  ("Primus")  and  Taurus  Acquisition
Corporation,  a wholly-owned  subsidiary of Primus  ("Taurus").  Pursuant to the
terms of the Agreement and Plan of Merger,  as amended,  it is contemplated that
Taurus  will  merge  with and into the  Company,  that the  Company  will be the
surviving  corporation  and that  Primus  will  acquire  100% of the  issued and
outstanding shares of the Company's common stock. The transaction is expected to
be  completed  during the second  quarter of 1998 and is subject to, among other
things, the approval of both Primus' and the Company's  shareholders and certain
regulatory authorities.

                                       7

<PAGE>

ITEM  2.    MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION
            AND RESULTS OF OPERATIONS.

SUMMARY

      The Company is a facilities-based long-distance telecommunications carrier
focused on international long-distance traffic. The Company offers a broad array
of  competitively  priced  services,  including  long  distance,  calling cards,
prepaid debit cards, domestic and international  toll-free calling,  frame relay
and bilingual operator  services.  The Company derives its revenues by providing
international and domestic  long-distance services on a wholesale basis to other
telecommunications  carriers and resellers and on a retail basis to  residential
and commercial  customers  ranging in size from small  businesses to Fortune 500
companies.  Service  revenues  are based on minutes of use and charged at a rate
per minute which varies  according to the  termination  point of the traffic and
time of day. All revenues are billed in United States dollars.

      THREE  MONTHS  ENDED MARCH 31, 1998  COMPARED TO THE THREE  MONTHS ENDED
MARCH  31, 1997

      REVENUES.  Revenues increased 5.5%, or $2.0 million, from $36.1 million in
the first  quarter  of 1997,  to $38.1  million  in the first  quarter  of 1998.
Minutes of use increased 11.5%, or 13.4 million  minutes,  from 116.8 million in
the first  quarter  of 1997,  to 130.2  million  in the first  quarter  of 1998.
International  traffic  accounted for  approximately 79% of total revenue in the
first  quarter  of 1997,  and  approximately  77% of total  revenue in the first
quarter of 1998.  This,  combined with continued  international  wholesale price
pressures and changes within the mix of international  terminations,  caused the
overall rate per minute to decline from approximately $0.31 in the first quarter
of 1997,  to $0.29 in the first  quarter  of 1998.  Historically,  international
traffic has commanded a higher per minute rate than domestic  traffic;  however,
this gap has been  decreasing  due to increased  international  competition  and
declining international termination costs.

      COSTS OF SERVICES.  Costs of services  increased  11.5%,  or $3.2 million,
from $27.8  million in the first  quarter of 1997, to $31.0 million in the first
quarter of 1998. Costs of services increased instep with the increased volume of
traffic  carried.  On a per minute basis,  however,  the variable portion of the
cost per minute decreased from approximately $0.23 in the first quarter of 1997,
to approximately  $0.21 in the first quarter of 1998. This decline was offset by
the Company's investment in the expansion of its network,  represented by higher
fixed per minute  costs of services.

      GROSS PROFIT.  Gross profit  decreased  13.3%, or $1.1 million,  from $8.3
million in the first  quarter of 1997,  to $7.2 million in the first  quarter of
1998. As a percentage of revenues, gross profit decreased from approximately 23%
in the first quarter of 1997 to approximately 19% in the first quarter of 1998.

      SELLING,   GENERAL  AND  ADMINISTRATIVE  EXPENSE.   Selling,  general  and
administrative  expense  increased 14.8%, or $1.2 million,  from $8.1 million in
the first quarter of 1997,  to $9.3 million in the first  quarter of 1998.  This
increase was due primarily to increased  expenses,  such as additional  reserves
for bad debt.  Bad debt  expense was $1.0  million and $1.8 million in the first
quarter of 1997 and 1998, respectively.

      DEPRECIATION  AND  AMORTIZATION.  Depreciation  and  amortization  expense
increased  26.7%,  or $0.4  million,  from $1.5 million in the first  quarter of
1997, to $1.9 million in the first quarter of 1998.  This  increased  expense is
due to the depreciation of assets acquired to support continued expansion of the
Company's network and amortization  related to acquired  businesses and customer
bases.

      INTEREST EXPENSE, NET. Interest expense, net, increased to $0.4 million in
the first quarter of 1998 due to interest  associated with the Company's capital
leases and borrowings under the Revolving Credit Agreement.

      NET LOSS. Net loss increased 71.1%, or $3.2 million,  from $1.3 million in
the first quarter of 1997, to $4.5 million in the first quarter of 1998,  due to
the above factors.

                                       8

<PAGE>


LIQUIDITY AND CAPITAL RESOURCES

      The Company's  liquidity  requirements  arise from working  capital needs,
primarily the cost of services;  selling,  general and administrative  expenses;
debt service;  and capital costs  associated with the expansion of switching and
network capacity. The Company is a holding company the principal assets of which
are the capital stock of its direct subsidiaries. The Company has no independent
means of generating  revenues.  As a holding  company,  the  Company's  internal
sources of funds to meet its cash  needs,  including  payment of  expenses,  are
dividends   and  other   permitted   payments   from  its  direct  and  indirect
subsidiaries. Historically, the Company's working capital requirements have been
funded primarily from the sale of equity  securities,  bank borrowings and loans
from shareholders.

      As of May 6, 1998,  availability  under the Revolving Credit Agreement was
approximately  $21.0 million,  of which  approximately  $15.1 million (including
approximately $0.7 million of letters of credit) had been utilized.  As of May 6
1998,  the  Company  was in  compliance  with  all  covenants  contained  in the
Revolving Credit Agreement.

      During the first  quarter of 1998,  the Company  acquired  $0.6 million in
assets via a capital lease, financed by a commercial bank. The Company currently
has  capital  commitments  of  approximately  $1.2  million.  Pending  available
financing,  the Company has identified  approximately $9.0 million of additional
capital expenditures  designed to expand the Company's  operations.  The Company
currently is reviewing various alternative financing arrangements.  There can be
no assurance,  however,  that such alternative  financing  arrangements  will be
available, or if available, on terms acceptable to the Company.

      From time to time, the Company  evaluates  acquisitions  of businesses and
customer bases which  complement  the business of the Company.  Depending on the
cash   requirements   of  potential   transactions,   the  Company  may  finance
transactions  with cash flow from  operations,  with  funds  from the  Revolving
Credit Agreement or may raise  additional  funds by pursuing  various  financing
vehicles such as new bank  financing or one or more public  offerings or private
placements of the Company's  securities.  The Company,  however,  has no present
understanding, commitment or agreement with respect to any acquisition and there
can be no assurance that any such  acquisition  will occur, or that the funds to
finance any such acquisition will be available on reasonable terms or at all.

      Based on  management's  projections,  the Company  believes that cash from
operations  and the available  funds under the Revolving  Credit  Agreement will
provide sufficient funds for its operating needs for the foreseeable future. The
Company is seeking additional financing arrangements to fund the $9.0 million of
additional  capital  expenditures  discussed  above.  There can be no assurance,
however, that such alternative financing  arrangements will be available,  or if
available,  on terms  acceptable to the Company.  If additional funds are needed
and sources are not available,  the Company's business and results of operations
could be materially adversely affected.

      Reference  is  made  to  the  "Management's  Discussion  and  Analysis  of
Financial Condition and Results of Operations" contained in the Company's Annual
Report  on Form  10-K  for the  fiscal  year  ended  December  31,  1997,  for a
description of certain factors which may affect the Company's future results.

PROPOSED MERGER

      In February 1998, the Company entered into a definitive Agreement and Plan
of Merger, which was subsequently amended by Amendments No. 1 and 2, dated as of
April 8, 1998 and April 16, 1998, respectively, with Primus and Taurus. Pursuant
to the terms of the Agreement and Plan of Merger, as amended, it is contemplated
that Taurus will merge with and into the  Company,  that the Company will be the
surviving  corporation  and that  Primus  will  acquire  100% of the  issued and
outstanding shares of the Company's common stock. The transaction is expected to
be  completed  during the second  quarter of 1998 and is subject to, among other
things, the approval of both Primus' and the Company's  shareholders and certain
regulatory authorities.

ITEM 3.           QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK.

      This requirement currently is not applicable to the Company.


                                       9

<PAGE>

                                   PART II
                              OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS.
        ------------------

        None.

ITEM 2. CHANGES IN SECURITIES AND USE OF PROCEEDS.
        ------------------------------------------

        None.

ITEM 3. DEFAULT UPON SENIOR SECURITIES.
        -------------------------------

        None.

ITEM 4. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS.
        ----------------------------------------------------

        None.

ITEM 5. OTHER INFORMATION.
        ------------------

        None.

ITEM 6. EXHIBITS AND REPORTS ON FORM 8-K.
        ---------------------------------

        (a)    EXHIBITS

        *2.1   Amendment  No. 1 to  Agreement  and Plan of  Merger,  dated as of
               April   8,   1998,    by   and   among   the   Company,    Primus
               Telecommunications  Group,  Incorporated  and Taurus  Acquisition
               Corporation (filed as Exhibit 2.1 to the Company's Current Report
               on Form 8-K, dated April 10, 1998).

        *2.2   Amendment  No. 2 to  Agreement  and Plan of  Merger,  dated as of
               April   16,   1998,   by   and   among   the   Company,    Primus
               Telecommunications  Group,  Incorporated  and Taurus  Acquisition
               Corporation (filed as Exhibit 2.1 to the Company's Current Report
               on Form 8-K, dated April 24, 1998).

        *10.1  Amendment  No.  1 to the  Stockholder  Agreement,  dated  as of
               April 16, 1998, by and among Primus  Telecommunications  Group,
               Incorporated,  Taurus Acquisition  Corporation,  K. Paul Singh,
               Warburg,  Pincus  Investors,  L.P.  and the  Company  (filed as
               Exhibit  10.1 to the  Company's  Current  Report  on Form  8-K,
               dated April 24, 1998).

        27.1   Financial Data Schedule for the quarterly  period ended March 31,
               1998.

        27.2   Restated  Financial Data Schedule for the quarterly  period ended
               March 31, 1997.

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

*   Incorporated herein by reference.


                                       10

<PAGE>


        (b)    REPORTS ON FORM 8-K

               On  February  9, 1998,  the  Company  filed a report on Form 8-K,
        under Item 5,  disclosing  that the Company,  Primus  Telecommunications
        Group,   Incorporated  ("Primus")  and  Taurus  Acquisition  Corporation
        ("Taurus")  had entered into a definitive  Agreement  and Plan of Merger
        providing  for the merger of the Company and Taurus and the  acquisition
        by Primus of 100% of the issued and outstanding  shares of the Company's
        common stock.


                                       11

<PAGE>

                                  SIGNATURES


  Pursuant to the  requirements  of the  Securities  Exchange  Act of 1934,  the
Registrant  has duly  caused  this  Report  to be  signed  on its  behalf by the
undersigned,  thereunto duly authorized, in the City of Ft. Lauderdale, State of
Florida, on the 14th of May, 1998.

                                    TRESCOM INTERNATIONAL, INC.
                                            (Registrant)


                                    By:   /S/ WESLEY T. O'BRIEN
                                       -----------------------------------------
                                       Wesley T. O'Brien
                                       President and Chief Executive Officer




                                    By:   /S/ MICHAEL BRACHFELD
                                       -----------------------------------------
                                       Michael Brachfeld
                                       Principal Financial and Accounting
                                       Officer



                                       12

<PAGE>

                                EXHIBIT INDEX

EXHIBIT NO.                             DESCRIPTION

   *2.1      Amendment No. 1 to Agreement and Plan of Merger,  dated as of April
             8, 1998, by and among the Company, Primus Telecommunications Group,
             Incorporated and Taurus  Acquisition  Corporation (filed as Exhibit
             2.1 to the Company's  Current  Report on Form 8-K,  dated April 10,
             1998).
   *2.2      Amendment No. 2 to Agreement and Plan of Merger,  dated as of April
             16,  1998,  by and among  the  Company,  Primus  Telecommunications
             Group,  Incorporated and Taurus  Acquisition  Corporation (filed as
             Exhibit  2.1 to the  Company's  Current  Report on Form 8-K,  dated
             April 24, 1998).
  *10.1      Amendment  No. 1  to  the Stockholder Agreement,  dated as of April
             16,  1998,  by   and  among   Primus   Telecommunications    Group,
             Incorporated,   Taurus   Acquisition  Corporation,  K.  Paul Singh,
             Warburg,   Pincus   Investors,  L.P.  and  the  Company  (filed  as
             Exhibit  10.1  to  the Company's  Current Report on Form 8-K, dated
             April 24, 1998).
   27.1      Financial  Data  Schedule for  the  quarterly  period  ended  March
             31, 1998.
   27.2      Restated  Financial  Data  Schedule  for the quarterly period ended
             March 31, 1997.

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

*   Incorporated herein by reference.