
3COM CORPORATION

SPORTSTER VOICE 28.8 FAXMODEM (EXTERNAL)

Card Type                    Modem, Fax
Chip Set                     Unidentified
I/O Options                  Serial ports (2 RJ-11), power jack, speaker
                             jack
Maximum Modem Rate           28.8Kbps
Maximum Fax Rate             14.4Kbps
Data Modulation Protocol     Bell 103A/212A

                             V.21, V.22, V.22bis, V.23, V.32, V.32bis,
                             V.34
Fax Modulation Protocol      Unidentified
Error Correction/Compression MNP 2-4, MNP5, V.42, V.42bis
Fax Class                    Class I & II
Data Bus                     External

[Image]

                                CONNECTIONS

        Function           Label             Function              Label

  Power jack                    CN1      Speaker jack               CN4

  RJ-11 line in                 CN2      RS-232/422                 CN5

  RJ-11 line out                CN3

                              DIAGNOSTIC LEDS

    LED           Color           Status              Condition

     AA        Unidentified         On           Auto answer enabled

     AA            Unidentified    Off           Auto answer disabled

     AA            Unidentified  Blinking        Auto answer receiving
                                                    incoming call

     CD        Unidentified         On         Carrier signal detected

     CD        Unidentified        Off       Carrier signal not detected

     RD            Unidentified  Blinking      Modem is receiving data

     RD        Unidentified        Off       Modem is not receiving data

     SD        Unidentified      Blinking      Modem transmitting data

     SD        Unidentified        Off       Modem not transmitting data

     TR            Unidentified     On            DTR signal is high

     TR        Unidentified        Off            DTR signal is low

     CS            Unidentified     On        Modem ready to accept data

     CS        Unidentified        Off       Modem is not ready to accept
                                                         data

  ARQ/FAX          Unidentified     On          Modem established error
                                                       control

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

     OH        Unidentified         On            Modem is off-hook

     OH        Unidentified        Off             Modem is on-hook

                           SUPPORTED COMMAND SET

                             Basic AT Commands

  AT, +++, comma, A/

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

  &C, &D, &G, &M, &P, &S, &T, &V, &X

                                S Registers

  S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S14, S18, S25,
  S38



  Note: See MHI Help File for full command documentation.

                         PROPRIETARY AT COMMAND SET

                                   DIAL

  Type:                  Immediate

  Format:                AT [cmds] D<#> [cmds]

  Description:           Dials telephone number according to any
                         modifiers included in the string

  Note:                  Any combination of modifiers can be used to
                         produce the desired dial functions in sequence.

        Command                              Function

          DL             Re-dial last number

          DR             Answer mode enabled; originate mode disabled
                         following handshake initiation.

          DP             Pulse dialing enabled

         DS=n            Dial stored telephone number n

         D#, *           Extended touch tone pads

          DT             Tone dialing enabled/Pulse dialing disabled

          D/             Delays for 125ms before proceeding with dial
                         string

          DW             Dialing resumed following dial tone detection

          D,             Dialing paused for amount of time specified in
                         S8 register

          D!             Flash function initiated. Modem commanded to go
                         off-hook for specified time before returning
                         on-hook.

          D@             Wait for Quite Answer function enabled. Modem
                         waits until a "quiet answer," a ring-back signal
                         followed by silence up to the time specified in
                         S7, is received prior to executing the rest of
                         the dial string.

          D$             Displays a list of dial commands

          D;             Modem returned to idle state after dialing. The
                         semicolon can only be placed at the end of the
                         dial command.

                            REPORT INFORMATION

  Type:          Immediate

  Format:        AT [cmds] In [cmds]

  Description:   Displays information requested

    Command                              Function

       I0        Reports modem model and speed

       I1        Reports ROM checksum

       I2        Tests and reports RAM checksum

       I3        Reports product type

       I4        Reports current modem settings

       I5        Reports nonvolatile memory (NVRAM) settings

       I6        Reports link diagnostics

       I7        Reports product confirmation

       I9        Reports Plug & Play information

      I11        Reports call statistics

                              SPEAKER VOLUME

  Type:          Configuration

  Format:        AT [cmds] Ln [cmds]

  Description:   Controls speaker volume

    Command                              Function

       L0        Low volume setting

       L1        Low volume setting

       L2        Medium volume setting

       L3        Highest volume setting

                               RESULT CODES

  Type:          Configuration

  Format:        AT [cmds] Qn [cmds]

  Description:   Enables modem to send result codes to the DTE

    Command                              Function

       Q0        Result code sending enabled

       Q1        Result code sending disabled

       Q2        Result code sending only in Originate mode

       Q3        Result code sending only in Ring mode

                           LONG SPACE DISCONNECT

  Type:             Configuration

  Format:           AT [cmds] Yn [cmds]

  Description:      Commands the modem to disconnect after a 1.6 second
                    break is detected

     Command                              Function

        Y0          Default is profile 0 setting

        Y1          Default is profile 1 setting

        Y2          Generic template (&F0)

        Y3          Hardware flow control (&F1)

        Y4          Software flow control (&F2)

                                SOFT RESET

  Type:                Immediate

  Format:              AT [cmds] Zn [cmds]

  Description:         Restores modem profiles previously saved in
                       non-volatile RAM using the &W command.

       Command                              Function

          Z0           Restore setting selected by Y command

          Z1           Restore setting 0

          Z2           Restore setting 1

          Z3           Restore to factory default profile 0 (&F0)

          Z4           Restore to factory default profile 1 (&F1)

          Z5           Restore to factory default profile 2 (&F2)

                      AUTO-ANSWER - ORIGINATE/ANSWER

  Type:          Configuration

  Format:        AT [cmds] &An [cmds]

  Description:   Selects originate or answer mode when in Auto-Answer
                 mode

    Command                              Function

      &A0        ARQ result codes disabled

      &A1        ARQ result codes enabled

      &A2        V-modulation indicator added

      &A3        Protocol indicators added

                             SERIAL PORT RATE

  Type:          Configuration

  Format:        AT [cmds] &Bn [cmds]

  Description:   Selects fixed or variable serial port rate

    Command                              Function

      &B0        Variable , follows connection rate

      &B1        Fixed serial port rate

      &B2        Fixed in ARQ mode, variable in non-ARQ mode

                          FACTORY DEFAULT PROFILE

  Type:             Configuration

  Format:           AT [cmds] &F [cmds]

  Description:      Sets values in active profile to values found in the
                    default profile

     Command                              Function

       &F0          Generic template

       &F1          Hardware flow control template

       &F2          Software flow control template

                        TRANSMIT DATA FLOW CONTROL

  Type:          Configuration

  Format:        AT [cmds] &H [cmds]

  Description:   Sets transmit data flow control

    Command                              Function

      &H0        Generic template

      &H1        Hardware flow control template

      &H2        Software flow control template

      &H3        Hardware and software flow control templates

                     RECEIVE DATA SOFWARE FLOW CONTROL

  Type:          Configuration

  Format:        AT [cmds] &I [cmds]

  Description:   Sets transmit data flow control

    Command                              Function

      &I0        Software flow control

      &I1        XON/XOFF signals to your modem and remote system

      &I2        XON/XOFF signals to your modem only

                               FLOW CONTROL

  Type:          Configuration

  Format:        AT [cmds] &Kn [cmds]

  Description:   Enables flow control options

    Command                              Function

      &K0        Flow control disabled

      &K1        Auto enable/disable

      &K2        XON/XOFF flow control enabled

      &K3        MNP5 compression disabled

                            COMMUNICATIONS MODE

  Type:          Configuration

  Format:        AT [cmds] &Mn [cmds]

  Description:   Selects communications mode

    Command                                Mode

      &M0        Normal mode, error control disabled

      &M1        Reserved

      &M2        Reserved

      &M3        Reserved

      &M4        Normal/ARQ

      &M5        ARQ mode

                       CONNECTION SPEED UPPER LIMIT

  Type:                  Configuration

  Format:                AT [cmds] &Nn [cmds]

  Description:           Sets required connection speed if &U is set to
                         0; otherwise, sets fastest allowed connection
                         speed.

        Command                              Function

          &N0            No maximum connect speed.

          &N1            Set maximum connect speed to 300bps.

          &N2            Set maximum connect speed to 1200bps.

          &N3            Set maximum connect speed to 2400bps.

          &N4            Set maximum connect speed to 4800bps.

          &N5            Set maximum connect speed to 7200bps.

          &N6            Set maximum connect speed to 9600bps.

          &N7            Set maximum connect speed to 12Kbps.

          &N8            Set maximum connect speed to 14.4Kbps.

          &N9            Set maximum connect speed to 16.8Kbps.

          &N10           Set maximum connect speed to 19.2Kbps.

          &N11           Set maximum connect speed to 21.6Kbps.

          &N12           Set maximum connect speed to 24Kbps.

          &N13           Set maximum connect speed to 26.4Kbps.

          &N14           Set maximum connect speed to 28.8Kbps.

          &N15           Set maximum connect speed to 31.2Kbps.

          &N16           Set maximum connect speed to 33.6Kbps.

                            PULSE DIALING RATIO

  Type:          Configuration

  Format:        AT [cmds] &Pn [cmds]

  Description:   Selects pulse dial make/break ratio

    Command                              Function

      &P0        39/61ms at 10pps (North America)

      &P1        33/67ms at 10pps (Europe)

                                  RTS/CTS

  Type:          Configuration

  Format:        AT [cmds] &Rn [cmds]

  Description:   Selects RTS/CTS options

    Command                              Function

      &R0        Reserved

      &R1        Modem ignores RTS.

      &R2        Received Data on computer only on RTS

                           DATA SET READY (DSR)

  Type:          Configuration

  Format:        AT [cmds] &Sn [cmds]

  Description:   Selects DSR options

    Command                              Function

      &S0        DSR forced high

      &S1        DSR high only while modem is handshaking or connected

                       CONNECTION SPEED LOWER LIMIT

  Type:            Configuration

  Format:          AT [cmds] &Un [cmds]

  Description:     Sets slowest allowed connection speed if &N is set to
                   1 or higher.

     Command                              Function

       &U0         No minimum connect speed.

       &U1         Set minimum connect speed to 300bps.

       &U2         Set minimum connect speed to 1200bps.

       &U3         Set minimum connect speed to 2400bps.

       &U4         Set minimum connect speed to 4800bps.

       &U5         Set minimum connect speed to 7200bps.

       &U6         Set minimum connect speed to 9600bps.

       &U7         Set minimum connect speed to 12Kbps.

       &U8         Set minimum connect speed to 14.4Kbps.

       &U9         Set minimum connect speed to 16.8Kbps.

       &U10        Set minimum connect speed to 19.2Kbps.

       &U11        Set minimum connect speed to 21.6Kbps.

       &U12        Set minimum connect speed to 24Kbps.

       &U13        Set minimum connect speed to 26.4Kbps.

       &U14        Set minimum connect speed to 28.8Kbps.

       &U15        Set minimum connect speed to 31.2Kbps.

       &U16        Set maximum connect speed to 33.6Kbps.

                        RESTORE PROFILE ON POWER-UP

  Type:               Configuration

  Format:             AT [cmds] &Yn [cmds]

  Description:        Restores a selected profile into the active profile
                      on power-up (hard reset)

      Command                              Function

        &Y0           Destructive, doesnt send break

        &Y1           Destructive, expedited

        &Y2           Nondestructive, expedited

        &Y3           Reserved



                            S(STATUS) -REGISTERS

                          BIT-MAPPED REGISTER S13

  Format:          AT [cmds] S13=n [cmds]

  Range:           0-174

  Unit:            Bit-mapped

  Description:     Controls reset, dial mode

   Bit    Value                           Function

    0          0   Unidentified

              1    Resets when DTR drops

    1          0   Unidentified

              1    Resets non-MNP transmit buffer from 1.5K to 128bytes

    2          0   Unidentified

              1    Sets backspace key to delete

    3          0   Unidentified

              1    On DTR signal, auto dials number stared at NVRAM
                   position 0

    4          0   Unidentified

              1    At power on/reset, auto dials number stared at NVRAM
                   position 0

    5         0    Reserved

    6         0    Reserved

    7       0 1    Unidentified

                   Disconnect on escape code

                          BIT-MAPPED REGISTER S15

  Format:          AT [cmds] S15=n [cmds]

  Unit:            Bit-mapped

  Description:     Disable/Enable MNP

   Bit    Value                           Function

    0          0   Enable ARQ/MNP for V.22

              1    Disable ARQ/MNP for V.22

    1          0   Enable ARQ/MNP for V.22bis

              1    Disable ARQ/MNP for V.22bis

    2          0   Enable ARQ/MNP for V.32/V.32bis/V.32terbo

              1    Enable ARQ/MNP for V.32/V.32bis/V.32terbo

    3          0   Enable MNP handshake

              1    Disable MNP handshake

    4          0   Enable MNP level 4

              1    Disable MNP level 4

    5          0   Enable MNP level 3

              1    Disable MNP level 3

    6          0   MNP compatibility

              1    MNP incompatibility

    7       0 1    Enable V.42 operation

                   Disable V.42 operation

                                TEST MODES

  Type:            Register

  Format:          AT [cmds] S16=n [cmds]

  Unit:            Bit-mapped

  Description:     Controls touch tone dialing test.

   Bit    Value                           Function

    0         0    Reserved

    1          0   Touch tone dialing test not in progress

              1    Touch tone dialing test in progress

   2-7        0    Reserved

                             INACTIVITY TIMER

  Type:                  Register

  Format                 AT [cmds] S19=n [cmds]

  Range:                 0-255

  Unit:                  1 minute

  Description:           Maximum duration of DTE and DCE inactivity
                         allowed prior to initiating hang-up process.

            Note: S19=0 disables the timer and allows indefinite
            inactivity.

                               BREAK LENGTH

  Type:           Register

  Format          AT [cmds] S21=n [cmds]

  Unit:           10ms

  Description:    Sets duration of breaks sent from the modem to the
                  computer

            Note: Applies to MNP or V.42 mode only.

                       FLOW CONTROL CHARACTER - XON

  Type:          Register

  Format:        AT [cmds] S22=n [cmds]

  Range:         0-255

  Unit:          ASCII

  Description:   Sets the character used to represent XON

                       FLOW CONTROL CHARACTER - XOFF

  Type:          Register

  Format:        AT [cmds] S23=n [cmds]

  Range:         0-255

  Unit:          ASCII

  Description:   Sets the character used to represent XOFF

                          BIT-MAPPED REGISTER S27

  Format                 AT [cmds] S27=n [cmds]

  Range:                 0-255

  Unit:                  Bit-mapped

  Description:           Enables/disables modulation protocols

   Bit        Value                         Function

    0                0   Disable ITU-T modulation at 300bps for overseas
                         calls: in V.21 mode, the modem answers both
                    1    overseas and domestic calls, but only originates
                         V.21 calls

                         Enable ITU-T modulation at 300bps for overseas
                         calls: in V.21 mode, the modem answers both
                         overseas and domestic calls, but only originates
                         V.21 calls

    1                0   Disable unencoded modulation in V.32 mode

                    1    Enable unencoded modulation in V.32 mode

    2                0   Enable V.32 modulation

                    1    Disable V.32 modulation

    3                0   Enable 2100Hz answer tone

                    1    Disable 2100Hz answer tone

    4                0   Disable V.23 fallback mode

                    1    Enable V.23 fallback mode

    5                0   Enable V.32bis mode

                    1    Disable V.32bis mode

    6                0   Enable V.42 selective reject

                    1    Disable V.42 selective reject

    7             0 1    Enable codes

                         Disable codes and displays 900 code instead

                              CONNECTION TIME

  Type:          Register

  Format         AT [cmds] S28=n [cmds]

  Range:         0-255

  Unit:          .01 second

  Description:   Sets V.32 duration

    Command                              Function

     S28=0       Eliminates the V.32 answer tone for a faster connection

     S28=8       Times are in .1 second

    S328=255     Disable connections except V.32 at 9600bps

                              FALLBACK TIMER

  Type:          Register

  Format         AT [cmds] S29=n [cmds]

  Range:         0-255

  Unit:          .01 second

  Description:   Sets the duration of the V.21 answer mode fallback timer

                              VOLUME CONTROL

  Type:          Register

  Format         AT [cmds] S31=n [cmds]

  Range:         0-255

  Description:   Sets volume control for speakerphone

                          BIT-MAPPED REGISTER S32

  Format:            AT [cmds] S32=n [cmds]

  Range:             0-255

  Description:       Select setup for 28.8 and higher speed modems

     Bit        Value                       Function

      0              0  Disable V.8 call indicate

                    1   Enable V.8 call indicate

      1              0  Disable V.8 mode

                    1   Enable V.8 mode

      2              0  Enable V.FC modulation

                    1   Disable V.FC modulation

      3              0  Enable V.34 modulation

                    1   Disable V.34 modulation

      4              0  Enable 33.6kbps modulation

                    1   Disable 33.6kbps modulation

     5-6             0  Reserved

                    1

                          BIT-MAPPED REGISTER S33

  Format:            AT [cmds] S33=n [cmds]

  Range:             0-255

  Description:       Disable/enable data rates

     Bit        Value                       Function

      0              0  Enable 2400 symbol rate

                    1   Disable 2400 symbol rate

      1              0  Enable 2743 symbol rate

                    1   Disable 2743 symbol rate

      2             0   Enable 2800 symbol rate

                        Disable 2800 symbol rate

      3              0  Enable 3000 symbol rate

                    1   Disable 3000 symbol rate

      4              0  Enable 3200 symbol rate

                    1   Disable 3200 symbol rate

      5              0  Enable 3429 symbol rate

                    1   Disable 3429 symbol rate

      6             0   Reserved

      7              0  Enable shaping

                    1   Disable shaping

                          BIT-MAPPED REGISTER S34

  Format:            AT [cmds] S34=n [cmds]

  Range:             0-255

  Description:       Disable/enable trellis encoding

     Bit        Value                       Function

      0              0  Enable 8S-2D trellis encoding

                    1   Disable 8S-2D trellis encoding

      1              0  Enable 16S-4D trellis encoding

                    1   Disable 16S-4D trellis encoding

      2              0  Enable 32S-2D trellis encoding

                    1   Disable 32S-2D trellis encoding

      3              0  Enable 64S-4D trellis encoding

                    1   Disable 64S-4D trellis encoding

      4              0  Enable non-linear coding

                    1   Disable non-linear coding

      5              0  Enable TX level deviation

                    1   Disable TX level deviation

      6              0  Enable pre-emphasis

                    1   Disable pre-emphasis

      7              0  Enable pre-coding

                    1   Disable pre-coding



