1
                                 EXHIBIT 10.13


               MCI TELECOMMUNICATIONS
               CORPORATION
[MCI LOGO]
               205 North Michigan Avenue
               Chicago, IL 60601
               312 856 2121

                                THIRD AMENDMENT

This Third Amendment is made this 25th day of April, 1997 between LONG DISTANCE
DIRECT, INC. ("Customer") and MCI TELECOMMUNICATIONS CORPORATION ("MCI").

WHEREAS, Customer and MCI entered into a Carrier Agreement signed by Customer on
March 14, 1996 and subsequently accepted by MCI on March 26,1996, as Amended by
the First Amendment signed by Customer on September 23, 1996 and subsequently
accepted by MCI on September 27, 1996, as Amended by the Second Amendment signed
by Customer on February 4, 1997 and subsequently accepted by MCI on ___________,
 (together, the "Agreement").

WHEREAS, Customer and MCI desire to enter into this Third Amendment for the
purpose of amending the Agreement.

NOW, THEREFORE, for good and valuable consideration, the receipt and sufficiency
of which is hereby acknowledged, Customer and MCI agree as follows:

1.    Paragraph 4(g) is hereby deleted and replaced in its entirety with the
      following paragraph:

      4(g) CNS INTERNATIONAL OUTBOUND RATES. For CNS International Service
      terminating in international countries (excluding CNS International
      Service terminating in Canada and Mexico), Customer shall receive the
      rates provided in Exhibit A in accordance with the following:

            1) CNS international calls terminating in the countries listed in
      Table 1 of Exhibit A will receive the rate per minute in Schedule A for
      dedicated calls and the rate per minute in Schedule B for non-dedicated
      calls indicated for such country less the associated maximizer discounts
      in Paragraph 4(m).

            2) CNS international calls terminating in the Latin American
      countries listed in Table 2, of Exhibit A will receive the rate per minute
      in Schedule A for dedicated calls and the rate per minute in Schedule B
      for non-dedicated calls indicated for such country. In addition, the
      postalized rates in Table 2, may be discounted by (i) the associated
      maximizer discount in Paragraph 4(l) and 4(m) and (ii) in each month of
      the Service Term in which Customer's Monthly Usage of MCI Services equals
      or exceeds Four Hundred Thousand dollars ($400,000) a eight percent (8%)
      discount ("Latin American discount"). If Customer qualifies for both the
      maximizer discount and the Latin American discount, Customer will receive
      an additive discount off the postalized rates in Table 2. For example, if
      Customer qualifies for the maximizer discount of twenty percent (20%) and
      the Latin American discount of eight percent (8%), Customer will receive a
      total discount of twenty-eight percent (28%) off the postalized rates in
      Table 2. Such discount shall be applied to Customer's monthly usage
      charges for CNS international dedicated calls terminating in the Latin
      American countries listed in Table 2 excluding any applicable taxes (and
      gross receipt taxes) and tax-related surcharges.

            3) CNS international calls terminating in the countries listed in
      Table 3 of Exhibit A will receive the rate per minute in Schedule A for
      dedicated calls and the rate per minute in Schedule B for non dedicated
      calls indicated for such country. In addition, the postalized rates in
      Table 3 may be discounted by (i) the associated maximizer discount in
      Paragraph 4(l) and 4(m) and (ii) the applicable discount percentage in the
      table below as determined by Customer's Monthly Usage of MCI Services
      ("revenue discount"). If Customer qualifies for both the maximizer
      discount and the revenue discount, Customer will receive an additive
      discount off the postalized rates in Table 3. For example, if Customer
      qualifies for the maximizer discount of twenty percent (20%) and the
      revenue discount of five percent (5%), Customer will receive a total
      discount of twenty-five (25%) off the postalized rates


                                MCI CONFIDENTIAL
   2
      in Table 3. Such discount percent shall be applied to Customer's monthly
      usage charges for CNS international calls terminating in the countries
      listed in Table 3 excluding any applicable taxes (and gross receipt taxes)
      and tax-related surcharges.



      Monthly Usage
      of MCI Services               Discount Percentage
      ---------------               -------------------
                                 
      $        0  to   $399,999             0%
      $  400,000  to   $599,999             2%
      $  600,000  to   $749,999             5%
      $  750,000  to   $999,999             7%
      $1,000,000  and above                10%


            4) Where rates are not provided in any of the Tables in Exhibit A
      for specific countries, Customer will receive Tariff rates less the
      associated maximizer discounts in Paragraph 4(l) and 4(m).

2.    Paragraph 4(h) is hereby deleted and replaced in its entirety with the
      following paragraph:

      4(h) CNS INTERNATIONAL OUTBOUND TERMINATING IN MEXICO. For CNS
      international outbound service terminating in Mexico, Customer shall pay a
      postalized rate per minute in Table A for dedicated calls and the rate per
      minute in Table B for non-dedicated calls.

      TABLE A
      CNS International terminating to Mexico
      Dedicated (dedicated to switched)



          Range  Base Rates
                 Standard     Economy
                        
            1     0.3500      0.2750
            2     0.3900      0.3050
            3     0.4600      0.3650
            4     0.6025      0.4600
            5     0.6950      0.5300
            6     0.9500      0.7175
            7     1.2050      0.9600
            8     1.3150      1.0000


      TABLE B
      CNS International terminating to Mexico
      Non-Dedicated (switched to switched)



         Range  Base Rates
                Standard   Economy
                     
            1     0.3800   0.3025
            2     0.4200   0.3350
            3     0.4900   0.3925
            4     0.6300   0.4900
            5     0.7225   0.5600
            6     0.9800   0.7450
            7     1.2325   0.9975
            8     1.3450   1.0300


The ranges set forth in the Table A and B above correspond to the ranges for
Mexico in Table V, Part H of the Tariff (or any successor Tariff section) which
state the distance from the Mexican border to the destination in Mexico. In
addition, the postalized rates in Tables A and B above may be discounted by


                                MCI CONFIDENTIAL
                                       2
   3
(i) the associated maximizer discount in Paragraph 4(l) and 4(m) and (ii) the
applicable revenue discount, in accordance with the terms set forth in Paragraph
4(g)3).

3.    Paragraph 4(i) is hereby deleted and replaced in its entirety with the
      following paragraph:

      4(i) CNS INTERNATIONAL OUTBOUND TERMINATING IN CANADA. For CNS
      international outbound service terminating in Canada, Customer shall pay a
      postalized rate per minute of $0.245 for non-dedicated calls and a rate
      per minute of $0.2150 for dedicated calls. In addition, the postalized
      rates in this paragraph may be discounted by (i) the associated maximizer
      discount in Paragraph 4(l) and 4(m) and (ii) the applicable revenue
      discount, in accordance with the terms set forth in Paragraph 4(g)3).

4.    Paragraph 4(j) is hereby deleted and replaced in its entirety with the
      following paragraph:

      4(j) INTERNATIONAL DEDICATED AND NON-DEDICATED TOLL FREE RATES. For CNS
      international dedicated and non-dedicated toll free service, Customer
      shall pay the international toll free rates at the standard Tariff
      non-dedicated rates in Option F, Section C.3.07314 (or any successor
      Tariff section) less the associated maximizer discounts in Paragraph 4(l).
      CNS dedicated toll free service shall receive a $0.03 per minute discount
      on the International Non-Dedicated toll free rates in this paragraph
      before application of the associated maximizer discount in Paragraph 4(m).
      Customer is not eligible for any Tariff discounts on such service.

5.    Paragraph 4(k) is hereby deleted and replaced in its entirety with the
      following paragraph:

            4(k) The postalized rates set forth in Exhibit A of this Agreement
      shall be fixed for three (3) months from the Effective Date. After this
      three month period, MCI shall have the option to revise the postalized
      rates in Exhibit A on thirty (30) days prior written notice. If the rate
      increase (a) to any country is more than ten percent (10%) or (b) is for a
      country which represents more than twenty (20%) of Customer's total
      international usage of CNS International dedicated and non-dedicated
      outbound service (measured in dollars) measured at the rates set forth in
      Exhibit A, as modified by any previous rate increase resulting from a rate
      review, or for countries not listed in Exhibit A, measured at Tariff rates
      less Tariff discounts, Customer will have the option to terminate traffic
      to that country and move such traffic to another carrier.

            If Customer elects to move such traffic to another carrier, MCI will
      reduce Customer's Monthly Commitment and International Subcommitment by an
      amount equal to the "Monthly Commitment Adjustment". The Monthly
      Commitment Adjustment shall be based on the Customer's monthly usage of
      CNS International dedicated and non-dedicated outbound service to the
      country in which Customer elects to terminate traffic during the month
      prior to the date in which Customer elects to terminate traffic to the
      country, measured at the rates set forth in Exhibit A or, for countries
      not listed in Exhibit A, measured at Tariff rates less Tariff discounts

6.    Paragraph 4(p) is hereby deleted and replaced in its entirety with the
      following paragraph:

      4(p)  INTERNATIONAL CALL BACK LIMITATIONS.

            1) If regulatory action by a foreign government agency prevents
      Customer from meeting the Monthly Commitment and International
      Subcommitment and Customer provides written notice to MCI of such action
      within thirty (30) days of its occurrence, MCI shall waive
      underutilization charges otherwise applicable to the months during which
      such regulatory action is in effect. Following such period, the Monthly
      Commitment and underutilization charges shall again be in effect.

            2) In the event that the underutilization charges are waived
      pursuant to Paragraph 4(p)1) above, the Service Term shall automatically
      be extended until the earlier of 1) the completion of the billing period
      in which Customer's usage of MCI Services pursuant to this Agreement, not
      including


                                MCI CONFIDENTIAL
                                       3
   4
      usage within the Ramp Period, totals Thirty Nine Million Five Hundred Two
      Thousand Five Hundred Dollars ($39,502,500) ("Term Commitment") or 2) the
      date which is in twenty-four (24) months from completion of the Service
      Term, upon which Customer shall pay to MCI the difference between the Term
      Commitment and Customer's actual usage of MCI Services pursuant to this
      Agreement.

            3) If MCI curtails twenty-five (25%) or more of the Customer's
      minutes of use of MCI services as a result of actions taken under
      Paragraph 4(p)4), 4(p)5) and 4(p)6), either party may either terminate
      this Agreement upon thirty (30) day written notice to the other party or
      reduce the Monthly Commitment and International Subcommitment. In the
      event Customer's Monthly Commitment and International Subcommitment are
      reduced, Customer shall continue to receive the rates and discounts set
      forth in this Agreement.

            4) If MCI detects the use of "polling" technique by Customer for
      signaling, setup or completion of calls, MCI may, subject to and without
      limitation upon the Tariff, block calls.

            5) If any action or ruling by the FCC or foreign PTT's prevent or
      impede MCI from performing any material obligation in this Agreement, MCI
      may, at its option and upon ten (10) days prior written notice to
      Customer, terminate this Agreement or the affected services herein without
      any liability.

            6) Any action or ruling by the FCC or foreign PTT's that prevents or
      effects MCI's ability to provide MCI services shall not be considered a
      breach of this Agreement. In addition, MCI's actions resulting from the
      PTT's blocking or interrupting MCI's service, or threatening to do so,
      shall not be considered a breach of this Agreement.

7.    Paragraph 7(e) is hereby deleted and replaced in its entirety with the
      following paragraph:

      7(e) MCI FEATURE CARD SERVICE. Customer will receive the rates, terms and
      conditions for MCI Feature Card Service set forth in Exhibit B.

8.    Exhibit A is hereby deleted and replaced in its entirety with the attached
      Exhibit A.

9.    Exhibit B is hereby deleted and replaced in its entirety with the attached
      Exhibit B.

10.   The terms of this Third Amendment will become effective, following
      execution by both parties, as of the first (1st) day of the first (1st)
      full month following execution by both parties.

11.   Except as expressly provided in this Third Amendment, all of the terms and
      conditions contained in the Agreement shall remain in full force and
      effect.

12.   This Third Amendment, together with the Agreement, is the complete
      agreement of the parties and supersedes all other prior agreements and
      representations concerning its subject matter.


                                MCI CONFIDENTIAL
                                        4
   5
13.   This offer will remain open and be capable of being accepted by Customer
      until FEBRUARY 28, 1997. Any and all prior offers made to Customer,
      whether written or oral, shall be in writing and signed by both parties.

LONG DISTANCE                       MCI TELECOMMUNICATIONS
DIRECT, INC.                        CORPORATION


/s/  Steven Lampert                 /s/ Edward W. Smith
- --------------------------          -----------------------------------
Signature                           Signature          EDWARD W. SMITH
                                                      EXECUTIVE DIRECTOR/
                                                      CONTROLLER, FINANCE

Steven Lampert
- --------------------------          -----------------------------------
Printed Name                        Printed Name

President
- --------------------------          -----------------------------------
Title                               Title


4/25/97                             05/09/97
- --------------------------          -----------------------------------
                    Date                                          Date


                                MCI CONFIDENTIAL
                                       5
   6
                                   EXHIBIT A

              CARRIER NETWORK SERVICE INTERNATIONAL OUTBOUND RATES


TABLE 1
SCHEDULE A
FLAT RATE COUNTRIES - DEDICATED



COUNTRY                       FLAT RATES FOR      EFFECTIVE
                              ALL TRAFFIC       RATES FOR ALL
                              LEVELS            TRAFFIC LEVELS
                                                AFTER MAXIMIZER
                                                  DISCOUNT
                                                WHEN APPLICABLE
- ---------------------------------------------------------------
                                          
CHINA                          $     1.4058       $     1.1246
- ---------------------------------------------------------------
FRANCE                         $     0.2776       $     0.2221
- ---------------------------------------------------------------
HONG KONG                      $     0.6140       $     0.4912
- ---------------------------------------------------------------
INDIA                          $     1.2875       $     1.0300
- ---------------------------------------------------------------
IRAN                           $     1.8114       $     1.4491
- ---------------------------------------------------------------
ISRAEL                         $     0.9078       $     0.7263
- ---------------------------------------------------------------
JAPAN                          $     0.4510       $     0.3608
- ---------------------------------------------------------------
KUWAIT                         $     1.1364       $     0.9091
- ---------------------------------------------------------------
LEBANON                        $     1.4373       $     1.1499
- ---------------------------------------------------------------
PAKISTAN                       $     1.7385       $     1.3908
- ---------------------------------------------------------------
RUSSIA                         $     1.3303       $     1.0642
- ---------------------------------------------------------------
SAUDI ARABIA                   $     1.3134       $     1.0507
- ---------------------------------------------------------------
SINGAPORE                      $     0.4696       $     0.3757
- ---------------------------------------------------------------
SOUTH AFRICA                   $     0.7199       $     0.5759
- ---------------------------------------------------------------
SOUTH KOREA                    $     0.6761       $     0.5409
- ---------------------------------------------------------------
SPAIN                          $     0.7140       $     0.5712
- ---------------------------------------------------------------
TAIWAN                         $     0.7092       $     0.5673
- ---------------------------------------------------------------
UNITED KINGDOM                 $     0.2186       $     0.1748
- ---------------------------------------------------------------
YEMEN ARAB REPUBLIC            $     1.1498       $     0.9198
- ---------------------------------------------------------------



                                MCI CONFIDENTIAL
                                       6
   7
                                   EXHIBIT A

              CARRIER NETWORK SERVICE INTERNATIONAL OUTBOUND RATES

TABLE 1
SCHEDULE B
FLAT RATE COUNTRIES - NON-DEDICATED




COUNTRY                         FLAT RATES           EFFECTIVE
                                FOR ALL TRAFFIC      RATES FOR ALL
                                LEVELS               TRAFFIC LEVELS
                                                     AFTER
                                                     MAXIMIZER
                                                     DISCOUNT
                                                     WHEN
                                                     APPLICABLE
- --------------------------------------------------------------------
                                            
CHINA                          $     1.4308       $     1.1446
- --------------------------------------------------------------------
FRANCE                         $     0.3026       $     0.2421
- --------------------------------------------------------------------
HONG KONG                      $     0.6390       $     0.5112
- --------------------------------------------------------------------
INDIA                          $     1.3125       $     1.0500
- --------------------------------------------------------------------
IRAN                           $     1.8364       $     1.4691
- --------------------------------------------------------------------
ISRAEL                         $     0.9328       $     0.7463
- --------------------------------------------------------------------
JAPAN                          $     0.4760       $     0.3808
- --------------------------------------------------------------------
KUWAIT                         $     1.1614       $     0.9291
- --------------------------------------------------------------------
LEBANON                        $     1.4623       $     1.1699
- --------------------------------------------------------------------
PAKISTAN                       $     1.7635       $     1.4108
- --------------------------------------------------------------------
RUSSIA                         $     1.3553       $     1.0842
- --------------------------------------------------------------------
SAUDI ARABIA                   $     1.3384       $     1.0707
- --------------------------------------------------------------------
SINGAPORE                      $     0.4946       $     0.3957
- --------------------------------------------------------------------
SOUTH AFRICA                   $     0.7449       $     0.5959
- --------------------------------------------------------------------
SOUTH KOREA                    $     0.6611       $     0.5289
- --------------------------------------------------------------------
SPAIN                          $     0.7390       $     0.5912
- --------------------------------------------------------------------
TAIWAN                         $     0.7342       $     0.5873
- --------------------------------------------------------------------
UNITED KINGDOM                 $     0.2436       $     0.1948
- --------------------------------------------------------------------
YEMEN ARAB REPUBLIC            $     1.1748       $     0.9398
- --------------------------------------------------------------------



                                MCI CONFIDENTIAL
                                       7
   8
                                   EXHIBIT A

              CARRIER NETWORK SERVICE INTERNATIONAL OUTBOUND RATES

TABLE 2
SCHEDULE A
LATIN AMERICAN COUNTRIES - DEDICATED



COUNTRY                       LATIN          EFFECTIVE       EFFECTIVE
                             AMERICAN      RATES FOR ALL     RATES AFTER
                            BASE RATES     TRAFFIC LEVELS     LATIN
                         FOR ALL TRAFFIC       AFTER         AMERICAN
                              LEVELS         MAXIMIZER          AND
                                              DISCOUNT        MAXIMIZER
                                                WHEN          DISCOUNTS
                                              APPLICABLE        WHEN
                                                              APPLICABLE
- ------------------------------------------------------------------------
                                                   
ARGENTINA                      $ 1.0481        $ 0.8385        $ 0.7547
- ------------------------------------------------------------------------
BOLIVIA                        $ 1.1201        $ 0.8961        $ 0.8065
- ------------------------------------------------------------------------
BRAZIL                         $ 0.8341        $ 0.6673        $ 0.6006
- ------------------------------------------------------------------------
CHILE                          $ 0.6211        $ 0.4969        $ 0.4472
- ------------------------------------------------------------------------
COLOMBIA                       $ 0.9916        $ 0.7933        $ 0.7140
- ------------------------------------------------------------------------
COSTA RICA                     $ 0.8223        $ 0.6578        $ 0.5921
- ------------------------------------------------------------------------
DOMINICAN REPUBLIC             $ 0.6170        $ 0.4936        $ 0.4443
- ------------------------------------------------------------------------
ECUADOR                        $ 1.1953        $ 0.9562        $ 0.8606
- ------------------------------------------------------------------------
EL SALVADOR                    $ 1.0080        $ 0.8064        $ 0.7257
- ------------------------------------------------------------------------
GUATEMALA                      $ 0.9262        $ 0.7410        $ 0.6669
- ------------------------------------------------------------------------
HAITI                          $ 1.0678        $ 0.8543        $ 0.7688
- ------------------------------------------------------------------------
HONDURAS                       $ 1.2112        $ 0.9690        $ 0.8721
- ------------------------------------------------------------------------
JAMAICA                        $ 1.0224        $ 0.8179        $ 0.7361
- ------------------------------------------------------------------------
NICARAGUA                      $ 1.0839        $ 0.8671        $ 0.7804
- ------------------------------------------------------------------------
PANAMA                         $ 1.0650        $ 0.8520        $ 0.7668
- ------------------------------------------------------------------------
PARAGUAY                       $ 1.3403        $ 1.0722        $ 0.9650
- ------------------------------------------------------------------------
PERU                           $ 0.9525        $ 0.7620        $ 0.6858
- ------------------------------------------------------------------------
TRINIDAD AND TOBAGO            $ 1.0196        $ 0.8157        $ 0.7341
- ------------------------------------------------------------------------
URUGUAY                        $ 1.1997        $ 0.9598        $ 0.8638
- ------------------------------------------------------------------------
VENEZUELA                      $ 0.6593        $ 0.5274        $ 0.4747
- ------------------------------------------------------------------------



                                MCI CONFIDENTIAL
                                       8
   9
                                   EXHIBIT A

              CARRIER NETWORK SERVICE INTERNATIONAL OUTBOUND RATES

TABLE 2
SCHEDULE B
LATIN AMERICAN COUNTRIES - NON-DEDICATED




COUNTRY                        LATIN           EFFECTIVE          EFFECTIVE
                              AMERICAN       RATES FOR ALL       RATES AFTER
                             BASE RATES     TRAFFIC LEVELS         LATIN
                          FOR ALL TRAFFIC         AFTER           AMERICAN
                               LEVELS           MAXIMIZER             AND
                                                DISCOUNT           MAXIMIZER
                                                  WHEN             DISCOUNTS
                                                APPLICABLE           WHEN
                                                                   APPLICABLE
- --------------------------------------------------------------------------------
                                                        
ARGENTINA                      $1.0759            $0.8607            $0.7747
- --------------------------------------------------------------------------------
BOLIVIA                        $1.1479            $0.9183            $0.8265
- --------------------------------------------------------------------------------
BRAZIL                         $0.8619            $0.6895            $0.6206
- --------------------------------------------------------------------------------
CHILE                          $0.6489            $0.5191            $0.4672
- --------------------------------------------------------------------------------
COLOMBIA                       $1.0194            $0.8155            $0.7340
- --------------------------------------------------------------------------------
COSTA RICA                     $0.8501            $0.6801            $0.6121
- --------------------------------------------------------------------------------
DOMINICAN REPUBLIC             $0.6448            $0.5158            $0.4643
- --------------------------------------------------------------------------------
ECUADOR                        $1.2231            $0.9785            $0.8806
- --------------------------------------------------------------------------------
EL SALVADOR                    $1.0358            $0.8286            $0.7457
- --------------------------------------------------------------------------------
GUATEMALA                      $0.9540            $0.7632            $0.6869
- --------------------------------------------------------------------------------
HAITI                          $1.0956            $0.8765            $0.7888
- --------------------------------------------------------------------------------
HONDURAS                       $1.2390            $0.9912            $0.8921
- --------------------------------------------------------------------------------
JAMAICA                        $1.0501            $0.8401            $0.7561
- --------------------------------------------------------------------------------
NICARAGUA                      $1.1116            $0.8893            $0.8004
- --------------------------------------------------------------------------------
PANAMA                         $1.0928            $0.8742            $0.7868
- --------------------------------------------------------------------------------
PARAGUAY                       $1.3681            $1.0944            $0.9850
- --------------------------------------------------------------------------------
PERU                           $0.9803            $0.7843            $0.7058
- --------------------------------------------------------------------------------
TRINIDAD AND TOBAGO            $1.0474            $0.8379            $0.7541
- --------------------------------------------------------------------------------
URUGUAY                        $1.2275            $0.9820            $0.8838
- --------------------------------------------------------------------------------
VENEZUELA                      $0.6870            $0.5496            $0.4947
- --------------------------------------------------------------------------------



                                MCI CONFIDENTIAL
                                        9
   10
                                   EXHIBIT A

              CARRIER NETWORK SERVICE INTERNATIONAL OUTBOUND RATES

TABLE 3
SCHEDULE A
BASE RATE COUNTRIES - DEDICATED

THE RATE CHART BELOW SHOWS CUSTOMER'S EFFECTIVE RATES AT EACH REVENUE
BILLING TIER AFTER BOTH THE MAXIMIZER AND REVENUE DISCOUNTS HAVE BEEN
APPLIED. ALL COUNTRIES NOT LISTED BELOW OR ABOVE WILL BE BILLED AT TARIFF
LESS TARIFF, FCC. NO 1, SECTION C.0739, PAGE NO. 19.9.1.7.8.3 OR ITS SUCCESSOR
SECTION.

All rates below are for U.S. Origination and international termination. Billing
increments are pursuant to FCC. No. 1, Section C 3.0739, Page No. 19.9.7.8.3 or
its successor section



COUNTRY                 BASE RATES          EFFECTIVE       EFFECTIVE          EFFECTIVE             EFFECTIVE         EFFECTIVE
                                             RATES AT         RATES AT          RATES AT             RATES AT          RATES AT
                                             $200,000         $400,000          $600,000             $750,000          $1,000,000
                                           TOTAL BILLING   TOTAL BILLING     TOTAL BILLING        TOTAL BILLING       TOTAL BILLING
                                              AFTER           AFTER 2%           AFTER 5%           AFTER 7%            AFTER 10%
                                            MAXIMIZER            AND                AND                AND                 AND
                                             DISCOUNT         MAXIMIZER          MAXIMIZER          MAXIMIZER           MAXIMIZER
                                               WHEN           DISCOUNTS          DISCOUNTS          DISCOUNTS           DISCOUNTS
                                            APPLICABLE           WHEN              WHEN               WHEN                WHEN
                                                              APPLICABLE         APPLICABLE        APPLICABLE          APPLICABLE
                                                                                                     
- -----------------------------------------------------------------------------------------------------------------------------------
ANGOLA                    $2.5275            $2.0220            $1.9714            $1.8956            $1.8451            $1.7692
- -----------------------------------------------------------------------------------------------------------------------------------
ANGUILLA                  $1.1500            $0.9200            $0.8970            $0.8625            $0.8395            $0.8050
- -----------------------------------------------------------------------------------------------------------------------------------
ANTIGUA                   $0.9095            $0.7276            $0.7094            $0.6822            $0.6640            $0.6367
- -----------------------------------------------------------------------------------------------------------------------------------
ARUBA                     $0.8420            $0.6736            $0.6568            $0.6315            $0.6147            $0.5894
- -----------------------------------------------------------------------------------------------------------------------------------
AUSTRALIA                 $0.4036            $0.3229            $0.3148            $0.3027            $0.2946            $0.2825
- -----------------------------------------------------------------------------------------------------------------------------------
AUSTRIA                   $0.6672            $0.5337            $0.5204            $0.5004            $0.4870            $0.4670
- -----------------------------------------------------------------------------------------------------------------------------------
BAHAMAS                   $0.3698            $0.2958            $0.2884            $0.2773            $0.2699            $0.2589
- -----------------------------------------------------------------------------------------------------------------------------------
BAHRAIN                   $1.2546            $1.0037            $0.9786            $0.9410            $0.9159            $0.8782
- -----------------------------------------------------------------------------------------------------------------------------------
BANGLADESH                $1.9834            $1.5867            $1.5470            $1.4875            $1.4479            $1.3884
- -----------------------------------------------------------------------------------------------------------------------------------
BARBADOS                  $0.8781            $0.7025            $0.6849            $0.6586            $0.6410            $0.6147
- -----------------------------------------------------------------------------------------------------------------------------------
BELGIUM                   $0.7062            $0.5650            $0.5508            $0.5297            $0.5155            $0.4944
- -----------------------------------------------------------------------------------------------------------------------------------
BELIZE                    $1.2299            $0.9840            $0.9594            $0.9225            $0.8979            $0.8610
- -----------------------------------------------------------------------------------------------------------------------------------
BENIN                     $1.5356            $1.2284            $1.1977            $1.1517            $1.1210            $1.0749
- -----------------------------------------------------------------------------------------------------------------------------------
BERMUDA                   $0.6722            $0.5378            $0.5243            $0.5042            $0.4907            $0.4705
- -----------------------------------------------------------------------------------------------------------------------------------
BRITISH V.I               $0.8971            $0.7177            $0.6997            $0.6728            $0.6549            $0.6280
- -----------------------------------------------------------------------------------------------------------------------------------
CAMBODIA                  $3.4197            $2.7357            $2.6673            $2.5648            $2.4964            $2.3938
- -----------------------------------------------------------------------------------------------------------------------------------
CAMEROON                  $1.5973            $1.2778            $1.2459            $1.1980            $1.1660            $1.1181
- -----------------------------------------------------------------------------------------------------------------------------------
CAYMAN ISLANDS            $0.8406            $0.6725            $0.6557            $0.6305            $0.6137            $0.5884
- -----------------------------------------------------------------------------------------------------------------------------------
CROATIA                   $1.9157            $1.5326            $1.4943            $1.4368            $1.3985            $1.3410
- -----------------------------------------------------------------------------------------------------------------------------------
CYPRUS                    $1.3301            $1.0641            $1.0375            $0.9976            $0.9710            $0.9311
- -----------------------------------------------------------------------------------------------------------------------------------
CZECH REPUBLIC            $0.8101            $0.6480            $0.6318            $0.6075            $0.5913            $0.5670
- -----------------------------------------------------------------------------------------------------------------------------------
DENMARK                   $0.5992            $0.4793            $0.4674            $0.4494            $0.4374            $0.4194
- -----------------------------------------------------------------------------------------------------------------------------------
DOMINICA                  $0.9512            $0.7610            $0.7419            $0.7134            $0.6944            $0.6658
- -----------------------------------------------------------------------------------------------------------------------------------



                                MCI CONFIDENTIAL
                                       10
   11


COUNTRY                 BASE RATES          EFFECTIVE       EFFECTIVE          EFFECTIVE             EFFECTIVE         EFFECTIVE
                                             RATES AT         RATES AT          RATES AT             RATES AT          RATES AT
                                             $200,000         $400,000          $600,000             $750,000          $1,000,000
                                           TOTAL BILLING   TOTAL BILLING     TOTAL BILLING        TOTAL BILLING       TOTAL BILLING
                                              AFTER           AFTER 2%           AFTER 5%           AFTER 7%            AFTER 10%
                                            MAXIMIZER            AND                AND                AND                 AND
                                             DISCOUNT         MAXIMIZER          MAXIMIZER          MAXIMIZER           MAXIMIZER
                                               WHEN           DISCOUNTS          DISCOUNTS          DISCOUNTS           DISCOUNTS
                                            APPLICABLE           WHEN              WHEN               WHEN                WHEN
                                                              APPLICABLE         APPLICABLE        APPLICABLE          APPLICABLE
                                                                                                     
- -----------------------------------------------------------------------------------------------------------------------------------
EGYPT                     $1.2717            $1.0174            $0.9919            $0.9538            $0.9284            $0.8902
- -----------------------------------------------------------------------------------------------------------------------------------
ETHIOPIA                  $2.0585            $1.6468            $1.6056            $1.5438            $1.5027            $1.4409
- -----------------------------------------------------------------------------------------------------------------------------------
FINLAND                   $0.5026            $0.4021            $0.3920            $0.3770            $0.3669            $0.3518
- -----------------------------------------------------------------------------------------------------------------------------------
GAMBIA                    $1.0233            $0.8186            $0.7982            $0.7675            $0.7470            $0.7163
- -----------------------------------------------------------------------------------------------------------------------------------
GERMANY                   $0.4358            $0.3486            $0.3399            $0.3268            $0.3181            $0.3050
- -----------------------------------------------------------------------------------------------------------------------------------
GHANA                     $1.5165            $1.2132            $1.1829            $1.1374            $1.1071            $1.0616
- -----------------------------------------------------------------------------------------------------------------------------------
GREECE                    $0.8883            $0.7107            $0.6929            $0.6662            $0.6485            $0.6218
- -----------------------------------------------------------------------------------------------------------------------------------
GRENADA                   $1.0143            $0.8115            $0.7912            $0.7607            $0.7405            $0.7100
- -----------------------------------------------------------------------------------------------------------------------------------
GUADELOUPE                $1.3679            $1.0943            $1.0670            $1.0259            $0.9986            $0.9575
- -----------------------------------------------------------------------------------------------------------------------------------
GUAM                      $0.9583            $0.7666            $0.7475            $0.7187            $0.6995            $0.6708
- -----------------------------------------------------------------------------------------------------------------------------------
GUINEA                    $2.5783            $2.0626            $2.0111            $1.9337            $1.8821            $1.8048
- -----------------------------------------------------------------------------------------------------------------------------------
GUYANA                    $1.3473            $1.0779            $1.0509            $1.0105            $0.9835            $0.9431
- -----------------------------------------------------------------------------------------------------------------------------------
HUNGARY                   $0.9724            $0.7779            $0.7584            $0.7293            $0.7098            $0.6806
- -----------------------------------------------------------------------------------------------------------------------------------
ICELAND                   $0.9859            $0.7887            $0.7690            $0.7394            $0.7197            $0.6901
- -----------------------------------------------------------------------------------------------------------------------------------
INDONESIA                 $1.2674            $1.0139            $0.9885            $0.9505            $0.9252            $0.8872
- -----------------------------------------------------------------------------------------------------------------------------------
IRAQ                      $2.0853            $1.6683            $1.6266            $1.5640            $1.5223            $1.4597
- -----------------------------------------------------------------------------------------------------------------------------------
IRELAND                   $0.6156            $0.4925            $0.4802            $0.4617            $0.4494            $0.4309
- -----------------------------------------------------------------------------------------------------------------------------------
ITALY                     $0.7011            $0.5609            $0.5469            $0.5258            $0.5118            $0.4908
- -----------------------------------------------------------------------------------------------------------------------------------
IVORY COAST               $2.0244            $1.6195            $1.5790            $1.5183            $1.4778            $1.4171
- -----------------------------------------------------------------------------------------------------------------------------------
JORDAN                    $1.5004            $1.2003            $1.1703            $1.1253            $1.0953            $1.0503
- -----------------------------------------------------------------------------------------------------------------------------------
KENYA                     $1.4266            $1.1413            $1.1128            $1.0700            $1.0414            $0.9986
- -----------------------------------------------------------------------------------------------------------------------------------
LIBERIA                   $1.1473            $0.9178            $0.8949            $0.8605            $0.8375            $0.8031
- -----------------------------------------------------------------------------------------------------------------------------------
LUXEMBOURG                $0.6228            $0.4983            $0.4858            $0.4671            $0.4547            $0.4360
- -----------------------------------------------------------------------------------------------------------------------------------
MALAYSIA                  $0.8440            $0.6752            $0.6583            $0.6330            $0.6161            $0.5908
- -----------------------------------------------------------------------------------------------------------------------------------
MOROCCO                   $1.8628            $1.4902            $1.4530            $1.3971            $1.3598            $1.3039
- -----------------------------------------------------------------------------------------------------------------------------------
MOZAMBIQUE                $2.3399            $1.8719            $1.8251            $1.7549            $1.7081            $1.6379
- -----------------------------------------------------------------------------------------------------------------------------------
MYANMAR (BURMA)           $4.9308            $3.9446            $3.8460            $3.6981            $3.5995            $3.4516
- -----------------------------------------------------------------------------------------------------------------------------------
NETHERLANDS               $0.3444            $0.2755            $0.2686            $0.2583            $0.2514            $0.2411
- -----------------------------------------------------------------------------------------------------------------------------------
NETHERLANDS ANTILLES      $0.6472            $0.5177            $0.5048            $0.4854            $0.4724            $0.4530
- -----------------------------------------------------------------------------------------------------------------------------------
NEW CALEDONIA             $2.5085            $2.0068            $1.9566            $1.8814            $1.8312            $1.7560
- -----------------------------------------------------------------------------------------------------------------------------------
NEW ZEALAND               $0.6168            $0.4934            $0.4811            $0.4626            $0.4503            $0.4318
- -----------------------------------------------------------------------------------------------------------------------------------
NIGERIA                   $1.0308            $0.8246            $0.8040            $0.7731            $0.7525            $0.7215
- -----------------------------------------------------------------------------------------------------------------------------------
NORWAY                    $0.3955            $0.3164            $0.3085            $0.2966            $0.2887            $0.2769
- -----------------------------------------------------------------------------------------------------------------------------------
OMAN                      $2.1301            $1.7041            $1.6615            $1.5976            $1.5550            $1.4911
- -----------------------------------------------------------------------------------------------------------------------------------
PHILIPPINES               $1.1464            $0.9171            $0.8942            $0.8598            $0.8369            $0.8025
- -----------------------------------------------------------------------------------------------------------------------------------
POLAND                    $0.8996            $0.7197            $0.7017            $0.6747            $0.6567            $0.6298
- -----------------------------------------------------------------------------------------------------------------------------------
PORTUGAL                  $0.8413            $0.6730            $0.6562            $0.6309            $0.6141            $0.5889
- -----------------------------------------------------------------------------------------------------------------------------------
QATAR                     $1.5538            $1.2430            $1.2120            $1.1653            $1.1343            $1.0877
- -----------------------------------------------------------------------------------------------------------------------------------
ROMANIA                   $1.5425            $1.2340            $1.2032            $1.1569            $1.1260            $1.0798
- -----------------------------------------------------------------------------------------------------------------------------------
SAO TOME                  $3.2256            $2.5805            $2.5160            $2.4192            $2.3547            $2.2579
- -----------------------------------------------------------------------------------------------------------------------------------
SENEGAL                   $2.3730            $1.8984            $1.8509            $1.7797            $1.7323            $1.6611
- -----------------------------------------------------------------------------------------------------------------------------------
SIERRA LEONE              $1.9871            $1.5897            $1.5499            $1.4903            $1.4506            $1.3910
- -----------------------------------------------------------------------------------------------------------------------------------
SRI LANKA                 $1.7643            $1.4114            $1.3761            $1.3232            $1.2879            $1.2350
- -----------------------------------------------------------------------------------------------------------------------------------
ST. KITTS                 $1.0732            $0.8586            $0.8371            $0.8049            $0.7834            $0.7513
- -----------------------------------------------------------------------------------------------------------------------------------
ST. LUCIA                 $1.0732            $0.8586            $0.8371            $0.8049            $0.7834            $0.7513
- -----------------------------------------------------------------------------------------------------------------------------------
ST. VINCENT/GRENADINES    $1.0742            $0.8594            $0.8379            $0.8057            $0.7842            $0.7520
- -----------------------------------------------------------------------------------------------------------------------------------
SURINAME                  $2.0348            $1.6279            $1.5872            $1.5261            $1.4854            $1.4244
- -----------------------------------------------------------------------------------------------------------------------------------
SWEDEN                    $0.3356            $0.2685            $0.2618            $0.2517            $0.2450            $0.2349
- -----------------------------------------------------------------------------------------------------------------------------------
SWITZERLAND               $0.3659            $0.2927            $0.2854            $0.2744            $0.2671            $0.2561
- -----------------------------------------------------------------------------------------------------------------------------------
SYRIA                     $2.1861            $1.7489            $1.7052            $1.6396            $1.5959            $1.5303
- -----------------------------------------------------------------------------------------------------------------------------------



                                MCI CONFIDENTIAL
                                       11
   12


COUNTRY                 BASE RATES          EFFECTIVE       EFFECTIVE          EFFECTIVE             EFFECTIVE         EFFECTIVE
                                             RATES AT         RATES AT          RATES AT             RATES AT          RATES AT
                                             $200,000         $400,000          $600,000             $750,000          $1,000,000
                                           TOTAL BILLING   TOTAL BILLING     TOTAL BILLING        TOTAL BILLING       TOTAL BILLING
                                              AFTER           AFTER 2%           AFTER 5%           AFTER 7%            AFTER 10%
                                            MAXIMIZER            AND                AND                AND                 AND
                                             DISCOUNT         MAXIMIZER          MAXIMIZER          MAXIMIZER           MAXIMIZER
                                               WHEN           DISCOUNTS          DISCOUNTS          DISCOUNTS           DISCOUNTS
                                            APPLICABLE           WHEN              WHEN               WHEN                WHEN
                                                              APPLICABLE         APPLICABLE        APPLICABLE          APPLICABLE
                                                                                                       
- -----------------------------------------------------------------------------------------------------------------------------------
TANZANIA                  $1.5139            $1.2111            $1.1809            $1.1355            $1.1052            $1.0598
- -----------------------------------------------------------------------------------------------------------------------------------
THAILAND                  $1.1835            $0.9468            $0.9231            $0.8876            $0.8640            $0.8285
- -----------------------------------------------------------------------------------------------------------------------------------
TOGO                      $1.7806            $1.4245            $1.3889            $1.3355            $1.2998            $1.2464
- -----------------------------------------------------------------------------------------------------------------------------------
TUNISIA                   $1.6010            $1.2808            $1.2488            $1.2008            $1.1687            $1.1207
- -----------------------------------------------------------------------------------------------------------------------------------
TURKEY                    $0.9594            $0.7676            $0.7484            $0.7196            $0.7004            $0.6716
- -----------------------------------------------------------------------------------------------------------------------------------
TURKS & CAICOS ISL        $1.0799            $0.8639            $0.8423            $0.8099            $0.7883            $0.7559
- -----------------------------------------------------------------------------------------------------------------------------------
UGANDA                    $1.4726            $1.1780            $1.1486            $1.1044            $1.0750            $1.0308
- -----------------------------------------------------------------------------------------------------------------------------------
UKRAINE                   $1.2015            $0.9612            $0.9372            $0.9011            $0.8771            $0.8411
- -----------------------------------------------------------------------------------------------------------------------------------
UNITED ARAB EMIRATES      $0.8279            $0.6623            $0.6458            $0.6209            $0.6044            $0.5795
- -----------------------------------------------------------------------------------------------------------------------------------
VIETNAM                   $1.7597            $1.4077            $1.3725            $1.3197            $1.2845            $1.2318
- -----------------------------------------------------------------------------------------------------------------------------------
ZAIRE                     $1.5172            $1.2137            $1.1834            $1.1379            $1.1075            $1.0620
- -----------------------------------------------------------------------------------------------------------------------------------
ZAMBIA                    $1.6011            $1.2809            $1.2489            $1.2008            $1.1688            $1.1208
- -----------------------------------------------------------------------------------------------------------------------------------
ZIMBABWE                  $1.2854            $1.0283            $1.0026            $0.9640            $0.9383            $0.8998
- -----------------------------------------------------------------------------------------------------------------------------------



                                MCI CONFIDENTIAL
                                       12
   13
                                   EXHIBIT A

              CARRIER NETWORK SERVICE INTERNATIONAL OUTBOUND RATES

TABLE 3
SCHEDULE B
BASE RATE COUNTRIES - NON-DEDICATED

THE RATE CHART BELOW SHOWS CUSTOMER'S EFFECTIVE RATES AT EACH REVENUE
BILLING TIER AFTER BOTH THE MAXIMIZER AND REVENUE DISCOUNTS HAVE BEEN
APPLIED. ALL COUNTRIES NOT LISTED BELOW OR ABOVE WILL BE BILLED AT TARIFF
LESS TARIFF DISCOUNTS, FCC. NO 1, SECTION C.0739, PAGE NO. 19.9.1.7.8.3 OR ITS
SUCCESSOR SECTION.

All rates below are for U.S. Origination and international termination. Billing
increments are pursuant to FCC. No. 1, Section C 3.0739, Page No. 19.9.7.8.3 or
its successor section.



COUNTRY                    BASE RATES         EFFECTIVE          EFFECTIVE        EFFECTIVE          EFFECTIVE           EFFECTIVE
                                               RATES AT           RATES AT         RATES AT           RATES AT           RATES AT
                                              $200,000            $400,000          $600,000          $750,000          $1,000,000
                                            TOTAL BILLING       TOTAL BILLING     TOTAL BILLING     TOTAL BILLING      TOTAL BILLING
                                                 AFTER            AFTER 2%          AFTER 5%           AFTER 7%          AFTER 10%
                                               MAXIMIZER            AND               AND                AND                AND
                                               DISCOUNT          MAXIMIZER         MAXIMIZER          MAXIMIZER          MAXIMIZER
                                                 WHEN            DISCOUNTS         DISCOUNTS          DISCOUNTS          DISCOUNTS
                                              APPLICABLE           WHEN              WHEN                WHEN               WHEN
                                                                 APPLICABLE        APPLICABLE         APPLICABLE         APPLICABLE
- ----------------------------------------------------------------------------------------------------------------------------------
                                                                                                       
ANGOLA                      $2.5561            $2.0448            $1.9937            $1.9170            $1.8659            $1.7892
ANGUILLA                    $1.1785            $0.9428            $0.9193            $0.8839            $0.8603            $0.8250
ANTIGUA                     $0.9381            $0.7505            $0.7317            $0.7036            $0.6848            $0.6567
ARUBA                       $0.8706            $0.6965            $0.6791            $0.6530            $0.6355            $0.6094
AUSTRALIA                   $0.4322            $0.3457            $0.3371            $0.3241            $0.3155            $0.3025
AUSTRIA                     $0.6958            $0.5566            $0.5427            $0.5218            $0.5079            $0.4870
BAHAMAS                     $0.3984            $0.3187            $0.3107            $0.2988            $0.2908            $0.2789
BAHRAIN                     $1.2832            $1.0266            $1.0009            $0.9624            $0.9367            $0.8982
BANGLADESH                  $2.0120            $1.6096            $1.5693            $1.5090            $1.4687            $1.4084
BARBADOS                    $0.9067            $0.7254            $0.7072            $0.6800            $0.6619            $0.6347
BELGIUM                     $0.7348            $0.5878            $0.5731            $0.5511            $0.5364            $0.5144
BELIZE                      $1.2585            $1.0068            $0.9816            $0.9439            $0.9187            $0.8810
BENIN                       $1.5641            $1.2513            $1.2200            $1.1731            $1.1418            $1.0949
BERMUDA                     $0.7008            $0.5606            $0.5466            $0.5256            $0.5116            $0.4905
BRITISH V.I                 $0.9256            $0.7405            $0.7220            $0.6942            $0.6757            $0.6480
CAMBODIA                    $3.4482            $2.7586            $2.6896            $2.5862            $2.5172            $2.4138
CAMEROON                    $1.6258            $1.3007            $1.2682            $1.2194            $1.1869            $1.1381
CAYMAN ISLANDS              $0.8692            $0.6954            $0.6780            $0.6519            $0.6345            $0.6084
CROATIA                     $1.9443            $1.5555            $1.5166            $1.4582            $1.4193            $1.3610



                                MCI CONFIDENTIAL
                                       13
   14


COUNTRY                    BASE RATES         EFFECTIVE          EFFECTIVE        EFFECTIVE          EFFECTIVE           EFFECTIVE
                                               RATES AT           RATES AT         RATES AT           RATES AT           RATES AT
                                              $200,000            $400,000          $600,000          $750,000          $1,000,000
                                            TOTAL BILLING       TOTAL BILLING     TOTAL BILLING     TOTAL BILLING      TOTAL BILLING
                                                 AFTER            AFTER 2%          AFTER 5%           AFTER 7%          AFTER 10%
                                               MAXIMIZER            AND               AND                AND                AND
                                               DISCOUNT          MAXIMIZER         MAXIMIZER          MAXIMIZER          MAXIMIZER
                                                 WHEN            DISCOUNTS         DISCOUNTS          DISCOUNTS          DISCOUNTS
                                              APPLICABLE           WHEN              WHEN                WHEN               WHEN
                                                                 APPLICABLE        APPLICABLE         APPLICABLE         APPLICABLE
- ----------------------------------------------------------------------------------------------------------------------------------
                                                                                                       
CYPRUS                      $1.3587            $1.0869            $1.0598            $1.0190            $0.9918            $0.9511
CZECH REPUBLIC              $0.8386            $0.6709            $0.6541            $0.6290            $0.6122            $0.5870
DENMARK                     $0.6277            $0.5022            $0.4896            $0.4708            $0.4583            $0.4394
DOMINICA                    $0.9798            $0.7838            $0.7642            $0.7348            $0.7152            $0.6858
EGYPT                       $1.3003            $1.0402            $1.0142            $0.9752            $0.9492            $0.9102
ETHIOPIA                    $2.0870            $1.6696            $1.6279            $1.5653            $1.5235            $1.4609
FINLAND                     $0.5312            $0.4249            $0.4143            $0.3984            $0.3878            $0.3718
GAMBIA                      $1.0519            $0.8415            $0.8205            $0.7889            $0.7679            $0.7363
GERMANY                     $0.4643            $0.3715            $0.3622            $0.3482            $0.3390            $0.3250
GHANA                       $1.5451            $1.2361            $1.2052            $1.1588            $1.1279            $1.0816
GREECE                      $0.9169            $0.7335            $0.7152            $0.6877            $0.6693            $0.6418
GRENADA                     $1.0429            $0.8343            $0.8135            $0.7822            $0.7613            $0.7300
GUADELOUPE                  $1.3965            $1.1172            $1.0892            $1.0474            $1.0194            $0.9775
GUAM                        $0.9868            $0.7895            $0.7697            $0.7401            $0.7204            $0.6908
GUINEA                      $2.6068            $2.0855            $2.0333            $1.9551            $1.9030            $1.8248
GUYANA                      $1.3759            $1.1007            $1.0732            $1.0319            $1.0044            $0.9631
HUNGARY                     $1.0009            $0.8007            $0.7807            $0.7507            $0.7307            $0.7006
ICELAND                     $1.0145            $0.8116            $0.7913            $0.7609            $0.7406            $0.7101
INDONESIA                   $1.2959            $1.0367            $1.0108            $0.9719            $0.9460            $0.9072
IRAQ                        $2.1139            $1.6911            $1.6489            $1.5854            $1.5432            $1.4797
IRELAND                     $0.6442            $0.5154            $0.5025            $0.4832            $0.4703            $0.4509
ITALY                       $0.7297            $0.5838            $0.5692            $0.5473            $0.5327            $0.5108
IVORY COAST                 $2.0530            $1.6424            $1.6013            $1.5397            $1.4987            $1.4371
JORDAN                      $1.5290            $1.2232            $1.1926            $1.1468            $1.1162            $1.0703
KENYA                       $1.4552            $1.1642            $1.1350            $1.0914            $1.0623            $1.0186
LIBERIA                     $1.1758            $0.9407            $0.9172            $0.8819            $0.8584            $0.8231
LUXEMBOURG                  $0.6514            $0.5211            $0.5081            $0.4886            $0.4755            $0.4560
MALAYSIA                    $0.8725            $0.6980            $0.6806            $0.6544            $0.6370            $0.6108
MOROCCO                     $1.8913            $1.5131            $1.4752            $1.4185            $1.3807            $1.3239
MOZAMBIQUE                  $2.3685            $1.8948            $1.8474            $1.7764            $1.7290            $1.6579
MYANMAR (BURMA)             $4.9594            $3.9675            $3.8683            $3.7195            $3.6203            $3.4716
NETHERLANDS                 $0.3730            $0.2984            $0.2909            $0.2797            $0.2723            $0.2611
NETHERLANDS                 $0.6757            $0.5406            $0.5271            $0.5068            $0.4933            $0.4730
ANTILLES
NEW CALEDONIA               $2.5371            $2.0297            $1.9789            $1.9028            $1.8521            $1.7760
NEW ZEALAND                 $0.6454            $0.5163            $0.5034            $0.4840            $0.4711            $0.4518
NIGERIA                     $1.0594            $0.8475            $0.8263            $0.7945            $0.7733            $0.7415
NORWAY                      $0.4241            $0.3393            $0.3308            $0.3181            $0.3096            $0.2969
OMAN                        $2.1586            $1.7269            $1.6837            $1.6190            $1.5758            $1.5111
PHILIPPINES                 $1.1749            $0.9400            $0.9165            $0.8812            $0.8577            $0.8225
POLAND                      $0.9282            $0.7426            $0.7240            $0.6962            $0.6776            $0.6498
PORTUGAL                    $0.8698            $0.6959            $0.6785            $0.6524            $0.6350            $0.6089
QATAR                       $1.5824            $1.2659            $1.2342            $1.1868            $1.1551            $1.1077
ROMANIA                     $1.5711            $1.2569            $1.2254            $1.1783            $1.1469            $1.0998
SAO TOME                    $3.2542            $2.6034            $2.5383            $2.4407            $2.3756            $2.2779
SENEGAL                     $2.4015            $1.9212            $1.8732            $1.8012            $1.7531            $1.6811
SIERRA LEONE                $2.0157            $1.6125            $1.5722            $1.5118            $1.4714            $1.4110
SRI LANKA                   $1.7929            $1.4343            $1.3984            $1.3446            $1.3088            $1.2550
ST. KITTS                   $1.1018            $0.8814            $0.8594            $0.8263            $0.8043            $0.7713



                                MCI CONFIDENTIAL
                                       14


   15


COUNTRY                    BASE RATES         EFFECTIVE          EFFECTIVE        EFFECTIVE          EFFECTIVE           EFFECTIVE
                                               RATES AT           RATES AT         RATES AT           RATES AT           RATES AT
                                              $200,000            $400,000          $600,000          $750,000          $1,000,000
                                            TOTAL BILLING       TOTAL BILLING     TOTAL BILLING     TOTAL BILLING      TOTAL BILLING
                                                 AFTER            AFTER 2%          AFTER 5%           AFTER 7%          AFTER 10%
                                               MAXIMIZER            AND               AND                AND                AND
                                               DISCOUNT          MAXIMIZER         MAXIMIZER          MAXIMIZER          MAXIMIZER
                                                 WHEN            DISCOUNTS         DISCOUNTS          DISCOUNTS          DISCOUNTS
                                              APPLICABLE           WHEN              WHEN                WHEN               WHEN
                                                                 APPLICABLE        APPLICABLE         APPLICABLE         APPLICABLE
- ----------------------------------------------------------------------------------------------------------------------------------
                                                                                                       
ST. LUCIA                   $1.1018            $0.8814            $0.8594            $0.8263            $0.8043            $0.7713
ST. VINCENT/GRENADINES      $1.1028            $0.8823            $0.8602            $0.8271            $0.8051            $0.7720
SURINAME                    $2.0634            $1.6507            $1.6095            $1.5476            $1.5063            $1.4444
SWEDEN                      $0.3642            $0.2914            $0.2841            $0.2731            $0.2659            $0.2549
SWITZERLAND                 $0.3945            $0.3156            $0.3077            $0.2959            $0.2880            $0.2761
SYRIA                       $2.2147            $1.7718            $1.7275            $1.6610            $1.6167            $1.5503
TANZANIA                    $1.5425            $1.2340            $1.2032            $1.1569            $1.1260            $1.0798
THAILAND                    $1.2121            $0.9697            $0.9454            $0.9091            $0.8848            $0.8485
TOGO                        $1.8092            $1.4473            $1.4112            $1.3569            $1.3207            $1.2664
TUNISIA                     $1.6296            $1.3037            $1.2711            $1.2222            $1.1896            $1.1407
TURKEY                      $0.9880            $0.7904            $0.7707            $0.7410            $0.7212            $0.6916
TURKS & CAICOS ISL          $1.1085            $0.8868            $0.8646            $0.8314            $0.8092            $0.7759
UGANDA                      $1.5011            $1.2009            $1.1709            $1.1258            $1.0958            $1.0508
UKRAINE                     $1.2301            $0.9841            $0.9595            $0.9226            $0.8980            $0.8611
UNITED ARAB EMIRATES        $0.8565            $0.6852            $0.6680            $0.6424            $0.6252            $0.5995
VIETNAM                     $1.7882            $1.4306            $1.3948            $1.3412            $1.3054            $1.2518
ZAIRE                       $1.5457            $1.2366            $1.2057            $1.1593            $1.1284            $1.0820
ZAMBIA                      $1.6297            $1.3038            $1.2712            $1.2223            $1.1897            $1.1408
ZIMBABWE                    $1.3139            $1.0511            $1.0249            $0.9854            $0.9592            $0.9198
- ----------------------------------------------------------------------------------------------------------------------------------



                                MCI CONFIDENTIAL
                                       15
   16
                                   EXHIBIT B

                          MCI FEATURE CARD SERVICE AND
                      ASSOCIATED FEATURE SERVICES DISCOUNT

A.    MCI FEATURE CARD SERVICE (OPTION T).

      When used under this Paragraph A, MCI Feature Card Service shall refer to
      such service only as accessed by dialing the unique 800 access number
      assigned by MCI to the MCI Feature Card Service.

      1) For domestic (i.e., within the U.S., but excluding Alaska, Hawaii,
      Puerto Rico and the U.S. Virgin Islands) interstate usage of MCI Feature
      Card (exclusive of monthly recurring charges, taxes, surcharges,
      installation charges, MCI Feature Card surcharges, Directory Assistance
      charges, charges for local access/egress services or facilities, and
      enhanced feature charges associated with MCI Feature Card Service),
      Customer shall pay a postalized rate of $0.2225 per minute.

      2)(a) For domestic intrastate usage of MCI Feature Card (exclusive of
      monthly recurring charges, taxes, surcharges, installation charges, MCI
      Feature Card surcharges, Directory Assistance charges, charges for local
      access/egress services or facilities, and enhanced feature charges
      associated with MCI Feature Card Service), Customer shall pay standard
      tariff rates for MCI Feature Card Service in each applicable MCI state
      tariff.

      (b) Customer shall receive a credit for domestic intrastate usage of MCI
      Feature Card Service, which when combined with the rates identified in
      2)(a) above, shall yield the postalized rate of $0.2225 per minute
      (exclusive of monthly recurring charges, taxes, surcharges, installation
      charges, MCI Feature Card surcharges, Directory Assistance charges,
      charges for local access/egress services or facilities, and enhanced
      feature charges associated with MCI Feature Card Service).

      (c) The credit amount in 2)(b) above shall be applied to Customer's
      domestic interstate monthly usage charges (exclusive of monthly recurring
      charges, taxes, surcharges, installation charges, MCI Feature Card
      surcharges, Directory Assistance charges, charges for local access/egress
      services or facilities and enhanced feature charges associated with the
      MCI Feature Card Service). The credit amount in any month shall not exceed
      such interstate monthly usage charges and shall not be carried forward to
      any subsequent month.

      3) During each month of the Service Term, Customer shall receive a credit
      calculated by multiplying thirty percent (30%) times Customer's domestic
      interstate, intrastate (after application of the credit described in
      Paragraph 2)(b) above) and international usage charges of MCI Feature Card
      Service (exclusive of monthly recurring charges, taxes, surcharges,
      installation charges, MCI Feature Card surcharges, Directory Assistance
      charges, charges for local access/egress services or facilities, and
      enhanced feature charges associated with MCI Feature Card Service).

      The credit amount shall be applied to Customer's domestic interstate
      monthly usage charges (exclusive of monthly recurring charges, taxes,
      surcharges, installation charges, MCI Feature Card surcharges, Directory
      Assistance charges, charges for local access/egress services or facilities
      and enhanced feature charges associated with the MCI Feature Card
      Service). The credit amount in any month shall not exceed such interstate
      monthly usage charges and shall not be carried forward to any subsequent
      month.

      4) The following MCI Feature Card surcharges shall be charged on all
      direct dial MCI Feature Card calls.



      FROM                          TO                                                               SURCHARGE
      ----                          --                                                               ---------
                                                                                               
      United States ("U.S")         U.S., Puerto Rico, U.S. Virgin Islands, Alaska & Hawaii             $0.000

      U.S.                          U.S., within the same State (domestic intrastate)                    $0.25



                                MCI CONFIDENTIAL
                                       16
   17

                                                                                               
      Puerto Rico                   U.S.                                                                $0.250

      U.S. Virgin Islands           U.S.                                                                $0.250

      U.S., Puerto Rico
      & U.S. Virgin Island          Canada                                                              $0.250

      U.S., Puerto Rico
      & U.S. Virgin Islands         International Locations other than Canada                           $1.250

      Canada                        U.S., Puerto Rico & U.S. Virgin Islands                             $1.000

      Canada                        International Locations                                             $1.250


      5) The above discounts for MCI Feature Card Service are in lieu of any
      Tariff discounts including, without limitation, the discounts for MCI
      Feature Card Service available under MCI VIP, MCI VIP Plus, MCI MOD and
      MCI CAS Service.

      6) For MCI Feature Card Service, Customer shall pay MCI for the
      fulfillment costs associated with Customer's usage of MCI Feature Card
      Service, plus an administrative charge for handling fulfillment in an
      amount equal to fifteen percent (15%) of the fulfillment costs.

      7) For MCI Feature Card Service, MCI shall provide the fraud detection
      procedures set forth in Exhibit C, attached hereto and incorporated herein
      by reference. Customer shall be responsible for all fraud associated with
      its usage of MCI Feature Card Service, except as set forth in Exhibit C.

B.    DISCOUNTS ON NON-TARIFFED FEATURE SERVICES.

      1) Customer will be entitled to the following applicable incremental
      discounts on Customer's usage of non-tariffed Feature Card Services (MCI
      Messenger Service, *3 Flexible Routing for Voice Mail, Voice News Network
      and Speed Dialing) as determined by Customer's Non-Tariffed Feature
      Services Monthly Usage (as defined below):



                  Non-Tariffed
                  Feature Services            Discount
                  Monthly Usage              Percentage
                  -------------              ----------
                                          
                  $      0 to $    999          3.0%
                  $  1,000 to $ 19,999          6.0%
                  $ 20,000 to $ 49,999          6.5%
                  $ 50,000 to $ 99,999          7.0%
                  $100,000 to $249,999          7.5%
                  $250,000 to $374,999          8.0%
                  $375,000 and above            8.5%


      The above discounts shall apply only to Customer's usage of non-tariffed
      Feature Services provided pursuant to MCI's standard terms and conditions
      for such services, but not to charges for installation, taxes or
      surcharges, and charges for local access/egress services or facilities
      associated with non-tariffed Feature Services.

      2) Non-Tariffed Feature Services Monthly Usage shall mean Customer's
      monthly combined recurring and usage charges for non-tariffed Feature
      Services at standard pricing but not including taxes (and gross receipts
      taxes), surcharges, and any charges for MCI Tariff or state tariff
      services.


                                MCI CONFIDENTIAL
                                       17
   18
C.    DISCOUNTS ON TARIFFED FEATURE SERVICES.

      1) Customer will be entitled to the following applicable incremental
      discounts on Customer's usage of tariffed Feature Card Services (i.e.,
      conference calling) as determined by Customer's Tariffed Feature Services
      Monthly Usage (as defined below):



            Tariffed
            Feature Services                Discount
            Monthly Usage                  Percentage
            -------------                  ----------
                                        
            $      0 to $  1,499              3.0%
            $  1,500 to $ 37,499             12.0%
            $ 37,500 to $112,499             13.0%
            $112,500 to $187,499             14.0%
            $187,500 to $374,999             15.0%
            $375,000 to $562,499             16.0%
            $562,500 and above               17.0%


      The above discounts shall apply only to Customer's usage of tariffed
      Feature Services provided pursuant to MCI's standard terms and conditions
      for such services, but not to charges for installation, taxes or
      surcharges, and charges for local access/egress services or facilities
      associated with tariffed Feature Services.

      2) Tariffed Feature Services Monthly Usage shall mean Customer's monthly
      combined recurring and usage charges for tariffed Feature Services at
      standard pricing but not including taxes (and gross receipts taxes),
      surcharges, and any charges for MCI Tariff or state tariff services.


                                MCI CONFIDENTIAL
                                       18