
ZOOM TELEPHONICS, INC.

14400BPS FAXMODEM (INTERNAL)

Card Type                    Fax, Modem (asynchronous)
Chip Set                     Unidentified
Maximum Data Rate            14.4Kbps
Maximum Fax Rate             14.4Kbps
Data Bus                     8-bit ISA
Fax Class                    Class I & II
Data Modulation Protocol     Bell 103/212A

                             ITU-T V.21, V.22A/B, V.22bis, V.23, V.32,
                             V.32bis
Fax Modulation Protocol      ITU-T V.17, V.21CH2, V.27ter, V.29
Error Correction/Compression MNP5, V.42, V.42bis

[Image]

                                CONNECTIONS

         Function            Label            Function             Label

  Line in                         CN1       Line out                CN2

                  SERIAL PORT ADDRESS/INTERRUPT SELECTION

     Setting         IRQ              JP1                    JP2

   COM1 (3F8h)        4         Pins 3 & 5, 4 & 6     Pins 1 & 3 closed
                                     closed

   COM2 (2F8h)        3         Pins 2 & 4, 3 & 5     Pins 2 & 4 closed
                                     closed

   COM3 (3E8h)        4         Pins 1 & 3, 4 & 6     Pins 1 & 3 closed
                                     closed

   COM4 (2E8h)        3         Pins 1 & 3, 2 & 4     Pins 2 & 4 closed
                                     closed

   COM5 (3E8h)        2         Pins 1 & 3, 4 & 6     Pins 4 & 6 closed
                                     closed

   COM6 (2E8h)        2         Pins 1 & 3, 2 & 4     Pins 4 & 6 closed
                                     closed

   COM7 (3E8h)        5         Pins 1 & 3, 4 & 6     Pins 3 & 5 closed
                                     closed

   COM8 (2E8h)        5         Pins 1 & 3, 2 & 4     Pins 3 & 5 closed
                                     closed

                         Proprietary AT Command Set

                 AUTO-RETRAIN - AUTO-FALLBACK/FALL-FORWARD

  Type:          Configuration

  Format:        AT [cmds] %En [cmds]

  Description:   Controls auto-retrain mode and fallback/fall-forward

    Command                              Function

      %E0        Auto-retrain disabled

      %E1        Auto-retrain enabled

      %E2        Auto-fallback/fall-forward enabled

      %E3        Auto-fallback/fall-forward with fast hang-up enabled

      BIT MAPPED REGISTERS

    Register        Default

      S14        Unidentified

      S16        Unidentified

      S21        Unidentified

      S22        Unidentified

      S23        Unidentified

      S27        Unidentified

      S28        Unidentified

      S31        Unidentified

      S40        Unidentified

      S41        Unidentified

                                BREAK SEND

  Type:          Configuration

  Format:        AT [cmds] \Bn [cmds]

  Default:       3

  Range:         1-9

  Unit:          .1 second

  Description:   Sends break to modem

                                BREAK TYPE

  Type:          Configuration

  Format:        AT [cmds] \Kn [cmds]

  Default:       Unidentified

  Range:         Unidentified

  Description:   Configures action of break signal

                                   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.

        Modifier                             Function

           L             Re-dial last number

           P             Pulse dialing enabled

           R             Command accepted, not acted upon.

          S=n            Dial stored telephone number n (n=0-3)

           T             Tone dialing enabled

           W             Dialing resumed following dial tone detection

           ,             Dialing paused for amount of time specified in
                         S8 register

           @             Wait for 5 seconds of silence

           ;             Modem returned to command state after dialing

           !             Modem commanded to go off-hook for specified
                         time before returning on-hook.

           ^             Calling tone enabled

                                COMPRESSION

  Type:          Configuration

  Format:        AT [cmds] %Cn [cmds]

  Description:   Selects data compression

    Command                              Function

      %C0        Data compression disabled

      %C1        MNP5 enabled

      %C2        V.42bis enabled

      %C3        MNP5 and V.42bis enabled

                               CONNECT MODE

  Type:          Configuration

  Format:        AT [cmds] \Nn [cmds]

  Description:   Controls the type of connection the modem will operate
                 in

    Command                              Function

      \N0        Normal mode enabled

      \N1        Direct mode enabled

      \N2        Reliable mode enabled

      \N3        Auto-reliable mode enabled

      \N4        V.42 reliable mode enabled

      \N5        MNP reliable mode enabled

                         FLASH DIAL MODIFIER TIME

  Type:                   Register

  Format                  AT [cmds] S29=n [cmds]

  Default:                0

  Range:                  0-255

  Unit:                   .01 second

  Description:            Time the modem will go on-hook upon receiving
                          the ! dial modifier in dial string. S29=0 will
                          disable.

                               FLOW CONTROL

  Type:          Configuration

  Format:        AT [cmds] \Gn [cmds]

  Description:   Selects modem port flow control

    Command                              Function

      \G0        Flow control disabled

      \G1        Flow control enabled

                               FLOW CONTROL

  Type:          Read-only Register

  Format         AT [cmds] S39? [cmds]

  Description:   Displays the current flow control

     Value                               Meaning

       0         Flow control disabled

       3         RTS/CTS flow control enabled

       4         XON/XOFF flow control enabled

       5         Transparent XON flow control enabled

       6         Transparent XON/XOFF flow control enabled

                       FLOW CONTROL CHARACTER - XOFF

  Type:          Register

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

  Default:       19

  Range:         0-255

  Unit:          ASCII

  Description:   Sets the character used to represent XOFF

                       FLOW CONTROL CHARACTER - XON

  Type:          Register

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

  Default:       17

  Range:         0-255

  Unit:          ASCII

  Description:   Sets the character used to represent XON

                             INACTIVITY TIMER

  Type:                  Register

  Format:                AT [cmds] S30=n [cmds]

  Default:               0

  Range:                 0-255

  Unit:                  10 seconds

  Description:           Sets the length of time that the modem does not
                         receive information before it disconnects. S30=0
                         will disable timer.

                             LINE SIGNAL LEVEL

  Type:             Immediate

  Format:           AT [cmds] %L [cmds]

  Description:      Returns a value which indicates the received line
                    signal level (-dBm)

                            LINE SIGNAL QUALITY

  Type:          Immediate

  Format:        AT [cmds] %Q [cmds]

  Description:   Returns a value which indicates line signal quality

                    MAXIMUM BLOCK SIZE FOR TRANSMISSION

  Type:          Configuration

  Format:        AT [cmds] \An [cmds]

  Description:   Sets the maximum transmittable block size

    Command                              Function

      \A0        MNP block size is 64 characters

      \A1        MNP block size is 128 characters

      \A2        MNP block size is 192 characters

      \A3        MNP block size is 256 characters

                          MNP - STREAM/BLOCK MODE

  Type:          Configuration

  Format:        AT [cmds] \Ln [cmds]

  Description:   Selects the transfer mode for MNP link

    Command                              Function

      \L0        Stream mode for MNP enabled

      \L1        Block mode for MNP enabled

                            REPORT INFORMATION

  Type:          Immediate

  Format:        AT [cmds] In [cmds]

  Description:   Displays information requested

    Command                              Function

       I0        Reports 3-digit product code

       I1        Reports ROM checksum

       I2        Tests and reports ROM checksum

       I3        Reports firmware revision code

       I4        Reports faxmodem identifier string

       I5        Reports country code

       I6        Reports data pump model and revision code

                                SLEEP TIMER

  Type:                   Register

  Format                  AT [cmds] S24=n [cmds]

  Default:                0

  Range:                  0-255

  Unit:                   1 second

  Description:            Maximum duration of DTE and DCE inactivity
                          allowed prior to initiating low-power sleep
                          mode.

