U.S. ROBOTICS, INC.

SPORTSTER 56K VOICE FAXMODEM (EXTERNAL)

Card Type                    Modem (asynchronous)
Chipset                      U.S. Robotics, Inc.
I/O Options                  Voice, speakerphone, speaker out
Maximum Data Rate            56Kbps
Maximum Fax Rate             14.4Kbps
Data Modulation              Bell 103A/212A

                             ITU-T V.21, V.22, V.22bis, V.23, V.32,
                             V.32bis, V.34

                             U.S. Robotics x2
Fax Modulation               ITU-T V.17, V.21CH2, V.27ter, V.29
Error Correction/Compression MNP5, V.42, V.42bis
Fax Class                    Class I & II
Data Bus                     Serial

[Image]

                                CONNECTIONS

          Function             Label            Function            Label

  AC power in                   CN1     Serial port                 CN5

  Telephone line in             CN2     Power switch                SW1

  Telephone line out            CN3     Volume                      VR1

  Speaker out                   CN4

                             DIAGNOSTIC LED(S)

    LED         Color          Status                 Condition

    AA       Unidentified        On              Auto-answer enabled

    AA       Unidentified        Off            Auto-answer disabled

    AA       Unidentified     Blinking            Phone is ringing

    CD       Unidentified        On            Carrier signal detected

    CD       Unidentified        Off         Carrier signal not detected

    CD       Unidentified     Blinking           Modem is retraining

    SD       Unidentified        On          Modem is transmitting data

    SD       Unidentified        Off          Modem is not transmitting
                                                        data

    RD       Unidentified        On            Modem is receiving data

    RD       Unidentified        Off         Modem is not receiving data

                         DIAGNOSTIC LED(S) (CON'T)

     LED            Color           Status              Condition

     TR         Unidentified          On           DTR signal is high

     TR         Unidentified         Off            DTR signal is low

     CS         Unidentified          On           CTS signal is high

     CS         Unidentified         Off            CTS signal is low

   ARQ/FAX      Unidentified          On          Modem is connected in
                                                  error correction mode

   ARQ/FAX      Unidentified         Off        Modem is not connected in
                                                  error correction mode

   ARQ/FAX      Unidentified       Blinking     Modem is connected in FAX
                                                     mode or modem is
                                                 retransmitting data due
                                                        to errors

            Note: The locations of the LEDs are unidentified.

           MISCELLANEOUS TECHNICAL NOTES

            A front panel diagram is not available.

                      SUPPORTED STANDARD COMMANDS

                           Basic AT Commands

  +++, ‘comma’, A/

  A, B, D, E, F, H, L, M, O, P, T, V, X, Z

  &C, &D, &F, &G, &P, &R, &S, &T, &W

                              S-Registers

  S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S18, S25, S38

            Note: See MHI help file for complete information.

                         Proprietary AT Command Set

   See U.S. ROBOTICS SPORTSTER 56K FAXMODEM (INTERNAL) for a full command
                                  summary.