3COM CORPORATION

US ROBOTICS 33.6KBPS (EXTERNAL)

Card Type                       Modem
Chip Set                        Unidentified
I/O Options                     Line out, line in
Maximum Modem Rate              33.6Kbps
Maximum Fax Rate                14.4Kbps
Data Modulation Protocol        Bell 103A/212A, ITU-T V.21, V.22,
                                V.22bis,V.32, V.32bis, V.34, V.FC
Fax Modulation Protocol         V.17, V.21, CH2, V.27ter, V.29
Error Correction/Compression    MNP2-4, V.42
Fax Class                       Class I & II
Data Bus                        External

[Image]

                                CONNECTIONS

         Function            Label            Function             Label

  RJ-11 line in                  CN1       25-pin serial port       CN3

  RJ-11 line out                 CN2       Power Jack               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,
                                                connection established

     CD        Unidentified        Off       Carrier signal not detected

     RD            Unidentified  Blinking      Modem is receiving data

     RD        Unidentified        Off       Modem is not receiving data

     TR            Unidentified  Blinking       Modem is receiving DTR
                                              signal/DTR override is on

     TR        Unidentified        Off        Modem is not receiving DTR
                                                        signal

     CS        Unidentified         On            CTS signal is high

     CS        Unidentified        Off            CTS signal is low

  ARQ/FAX          Unidentified     On          Modem established error
                                                       control

  ARQ/FAX      Unidentified      Blinking        Modem retransmitting
                                                data/Fax mode enabled

  ARQ/FAX      Unidentified        Off         Modem has not established
                                                    error control



                         SUPPORTED COMMAND SET

                           Basic AT Commands

  AT, A/, +++

  A, B, E, F, H, M, O, P, T, V

  &C, &G, &T, &W

                              S Registers

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



                            Special Commands

  #CID



  Note: See MHI Help File for full command documentation.

   For a full command summary, see 3COM CORPORATION, US ROBOTICS 33.6KBPS
                                (INTERNAL).