
GLOBAL VILLAGE COMMUNICATIONS

TELEPORT 33.6 INTERNET

Card Type                    Modem (synchronous/asynchronous)
Chipset                      Unidentified
Maximum Data Rate            33.6Kbps
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

                             Rockwell K56+
Fax Modulation               ITU-T V.17, V.29
Error Correction/Compression MNP5, V.42, V.42bis
Fax Class                    Class I
Data Bus                     Serial

[Image]

                                CONNECTIONS

          Function             Label           Function            Label

  Telephone line out            CN1     DC power in                 CN4

  Telephone line in             CN2     Power switch                SW1

  Macintosh RS-422 serial       CN3
  port

                             DIAGNOSTIC LED(S)

    LED           Color          Status               Condition

    LED1      Unidentified         On          Modem is transmitting or
                                                   receiving data

    LED1      Unidentified        Off        Modem is not transmitting or
                                                   receiving data

    LED2      Unidentified         On                Power is on

    LED2      Unidentified        Off               Power is off

    LED3      Unidentified         On            Modem is connected

    LED3      Unidentified        Off          Modem is not connected

                        SUPPORTED STANDARD COMMANDS

                             Basic AT Commands

  +++, comma, A/

  A, C, D, E, H, L, M, N, Q, V, W, X, Y, Z

  &C, &D, &F, &G, &K, &L, &M, &P, &Q, &R, &S, &T, &V, &W, &Y, &Z

                           Extended AT Commands

  \A, \B, \C, \G, \J, \K, \N, \Q, \T, \V, \X

  %A, %C, %E, %G

                            Special AT Commands

  -C, "H, -J, -K, "N, "O

                                S-Registers

  S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S14, S16, S18,
  S21, S22, S23, S25, S26

  S27, S30, S95, S108

            Note: See MHI help file for complete information.

                         Proprietary AT Command Set

                           AUTOSYNC HDLC ADDRESS

  Type:          Register

  Format:        AT [cmds] S20=n [cmds]

  Default:       0

  Range:         0-255

  Unit:          Unidentified

  Description:   Sets the HDLC address and bisync character.

                             AUTOSYNC OPTIONS

  Type:               Register

  Format              AT [cmds] S19=n [cmds]

  Default:            26

  Range:              0 - 30

  Description:        Controls autosync protocol, HDLC address detection,
                      bit coding, and HDLC idle.

   Bit       Value                         Function

    0             0   Not used

    1              0  Binary synchronous protocol used.

                  1   HDLC protocol used.

    2              0  HDLC address detect disabled.

                  1   HDLC address detect enabled.

    3              0  NRZI bit coding used.

                  1   NRZ bit coding used.

    4              0  HDLC idle sends MARK.

                  1   HDLC idle sends FLAG or SYNC.

                         DISPLAY FIRMWARE REVISION

  Type:          Immediate

  Format:        AT [cmds] -V [cmds]

  Description:   Displays the version of the firmware currently
                 installed.

                            DISPLAY INFORMATION

  Type:          Immediate

  Format:        AT [cmds] In [cmds]

  Description:   Displays information requested about the modem.

    Command                              Function

       I0        Displays and information.

       I1        Displays ROM checksum.

       I2        Tests and reports ROM checksum.

       I3        Displays product identification code and version.

       I4        Displays modem capabilities.

                           ESCAPE SEQUENCE TYPE

  Type:          Configuration

  Format:        AT [cmds] %On [cmds]

  Description:   Selects which type of escape sequences may be used.

    Command                              Function

      %O0        Escape sequences disabled.

      %O1        TIES (+++AT [cmds]<CR>) escape sequence enabled.

      %O2        <BREAK> AT escape sequence enabled.

      %O3        <BREAK> AT and TIES escape sequences enabled.

                      ESCAPE SEQUENCE <CR> WAIT DELAY

  Type:                  Register

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

  Default:               2

  Range:                 Unidentified

  Unit:                  Unidentified

  Description:           Sets the amount of time that the modem will wait
                         between receiving the +++AT marking the
                         beginning of an escape sequence and the <CR>
                         ending it.

                                LINE SPEED

  Type:                Register

  Format               AT [cmds] S37=n [cmds]

  Description:         Sets the maximum allowable data exchange rate
                       attempted during handshake process.

       Command                              Function

        S37=0          Speed of last connection

        S37=3          Set speed to 300bps.

        S37=5          Set speed to 1200bps.

        S37=6          Set speed to 2400bps.

        S37=7          Set speed to 4800bps.

        S37=8          Set speed to 7200bps.

        S37=9          Set speed to 9600bps.

       S37=10          Set speed to 12Kbps.

                 LINE SPEED (CONT)

  Command                   Function

  S37=11    Set speed to 14.4Kbps.

  S37=12    Set speed to 16.8Kbps.

  S37=13    Set speed to 19.2Kbps.

                          LOCAL SERIAL PORT SPEED

  Type:          Register

  Format:        AT [cmds] S112=n [cmds]

  Description:   Sets the speed of the local serial port.

    Command                              Function

     S112=0      Use speed of last command.

     S112=2      Set speed to 300bps.

     S112=3      Set speed to 1200bps.

     S112=4      Set speed to 2400bps.

     S112=5      Set speed to 4800bps.

     S112=6      Set speed to 7200bps.

     S112=7      Set speed to 9600bps.

     S112=8      Set speed to 12Kbps.

     S112=9      Set speed to 14.4Kbps.

    S112=10      Set speed to 16.8Kbps.

    S112=11      Set speed to 19.2Kbps.

    S112=12      Set speed to 38.4Kbps.

    S112=13      Set speed to 57.6Kbps.

    S112=14      Set speed to 600bps.

                                  ON-LINE

  Type:            Immediate

  Format:          AT [cmds] On

  Description:     Instructs the modem to return to on-line state.

     Command                             Function

       O0          Return to on-line state.

       O1          Return to on-line state and initiate retrain sequence.

       O3          Return to on-line state and initiate rate negotiation
                   sequence.

                              PROTOCOL/SPEED

  Type:          Configuration

  Format:        AT [cmds] Bn [cmds]

  Description:   Selects the communication protocol the modem will use.

    Command                              Protocol

       B0        Modem will use ITU-T V.22 at 1200bps and V.21 at 300bps.

       B1        Modem will use Bell 212A at 1200bps and 103A at 300bps.

       B2        Modem will use ITU-T V.23 at 1200/75bps.

       B3        Modem will use ITU-T V.23 at 75/1200bps.

      B15        Modem will use ITU-T V.21 at 300bps.

      B16        Modem will use 103A at 300bps.

      B30        Modem will use ITU-T V.22bis at 2400bps.

      B41        Modem will use ITU-T V.32 at 4800bps.

      B52        Modem will use ITU-T V.32bis at 7200bps.

      B60        Modem will use ITU-T V.32 at 9600bps.

      B70        Modem will use ITU-T V.32bis at 12Kbps.

      B75        Modem will use ITU-T V.32bis at 14.4Kbps.

                              TRELLIS CODING

  Type:          Configuration

  Format:        AT [cmds] &Un [cmds]

  Description:   Selects whether the modem will use trellis coding.

    Command                              Function

      &U0         Trellis coding enabled.

      &U1         Trellis coding disabled.

                      V.32/V.32bis/V.32terbo OPTIONS

  Type:           Register

  Format          AT [cmds] S110=n [cmds]

  Description:    Selects options for V.32, V.32bis, and V.32terbo
                  protocols.

     Command                             Function

     S110=0       V.32 enabled.

     S110=1       V.32 and V.32bis enabled.

     S110=2       V.32 and V.32bis enabled with rate re-negotiation.

     S110=3       V.32, V.32bis, and V.32terbo enabled.

     S110=4       V.32, V.32bis, and V.32terbo enabled with rate
                  re-negotiation.

                            V.32 - AUTO-RETRAIN

  Type:            Configuration

  Format:          AT [cmds] &Bn [cmds]

  Description:     Controls auto-retrain function if poor line quality is
                   detected.

     Command                              Function

       &B0         Auto-retrain disabled, modem hangs up.

       &B1         Auto-retrain enabled, modem hangs up if retrain fails.

       &B2         Auto-retrain disabled, modem does not hang up.

                     V.32terbo - CARRIER SPEED OPTIONS

  Type:                 Register

  Format                AT [cmds] S109=n [cmds]

  Default:              62

  Range:                0 - 255

  Description:          Designates the carrier speeds available for
                        V.32terbo during handshake, retrain, and speed
                        re-negotiations.

   Bit        Value                         Function

    0               0   Not used.

    1                0  4800bps carrier disabled.

                    1   4800bps carrier enabled.

    2                0  7200bps carrier disabled.

                    1   7200bps carrier enabled.

    3                0  9600bps carrier disabled.

                    1   9600bps carrier enabled.

    4                0  12Kbps carrier disabled.

                    1   12Kbps carrier enabled.

    5                0  14.4Kbps carrier disabled.

                    1   14.4Kbps carrier enabled.

    6                0  16.8Kbps carrier disabled.

                    1   16.8Kbps carrier enabled.

    7                0  19.2Kbps carrier disabled.

                    1   19.2Kbps carrier enabled.

