
VEN-TEL, INC.

PCMCIA144FAX

Modem Type                   Data (synchronous/asynchronous)/Fax
Maximum Data Rate            14.4Kbps
Maximum Fax Rate             14.4Kbps
Data Bus                     PCMCIA Type II
Fax Class                    Class I & II
Data Modulation Protocol     Bell 103A/212A

                             ITU-T V.21, V.22, V.22bis, V.32, V.32bis
Fax Modulation Protocol      ITU-T V.17, V.27, V.29
Error Correction/Compression MNP5, MNP10, V.42, V.42bis

                          Proprietary Command Set

                                                                      V1175

                               ABORT DIALING

  Type:            Register

  Format:          AT [cmds] S64=n [cmds]

  Example:         AT S64=1<CR>

  Description:     Selects whether dialing and handshaking sequences can
                   be interrupted.

  Command                                Function

   S64=0          Dialing and handshaking are aborted on receipt of a
                   character from the serial port.

  S64=1            Characters received from the serial port during
                   dialing and handshaking are ignored.

                          BIT-MAPPED REGISTER S14

  Format                  AT [cmds] S14=n [cmds]

  Example:                ATS14=139<CR>

  Default:                Unidentified

  Range:                  0 - 255

  Unit:                   Bit-mapped

  Description:            Controls echo, quiet mode, result codes, dial
                          mode, and originate/answer mode.

      Bit          Value                       Function

       0             1       Not used.

       1             0       Command echo function disabled.

                     1       Command echo function enabled.

       2             0       Result code sending enabled.

                     1       Result code sending disabled.

       3             0       Numeric format enabled.

                     1       Verbose format enabled.

       4             0       Not used.

       5             0       Tone dialing mode enabled.

                     1       Pulse dialing mode enabled.

       6             0       Result codes normal.

                     1       Result codes disabled in answer mode.

       7             0       Answer mode enabled.

                     1       Originate mode enabled.

                          BIT-MAPPED REGISTER S21

  Format                    AT [cmds] S21=n [cmds]

  Example:                  ATS21=1<CR>

  Default:                  Unidentified

  Range:                    0 - 255

  Unit:                     Bit-mapped

  Description:              Controls stored profile DTR action, DCD
                            signal, and the Long Space Disconnect
                            function.

       Bit           Value                      Function

        0              0        Not used.

        1               0       Use stored profile 0.

                       1        Use stored profile 1.

     4, 3, 2           000      DTR signal forced high.

                       001      Modem goes to command mode on low DTR.

                       010      Modem disconnects on low DTR. Auto-Answer
                                is disabled.
                       011
                                Modem is initialized on low DTR.
                      100
                                Modem dials default number on low DTR.

       6, 5            00       DCD signal forced high.

                       01       DCD signal normal.

                       10       DCD signal forced high except during
                                disconnect.

        7               0       Long Space Disconnect function disabled.

                       1        Long Space Disconnect function enabled.

                          BIT-MAPPED REGISTER S22

  Format                    AT [cmds] S22=n [cmds]

  Example:                  ATS22=114<CR>

  Default:                  Unidentified

  Range:                    0 - 255

  Unit:                     Bit-mapped

  Description:              Controls volume and speaker settings, result
                            codes, and make/break pulse ratio.

       Bit          Value                       Function

       1, 0            00       Lowest volume setting.

                       01       Low volume setting.

                       10       Medium volume setting

                       11       Highest volume setting.

       3, 2            00       Speaker disabled.

                       01       Speaker enabled until carrier signal
                                detected
                       10
                                Speaker enabled.
                       11
                                Speaker enabled following dialing, then
                                disabled after carrier signal detected.

     6, 5 ,4           000      Busy and dialtone detection disabled,
                                result codes 0-4 enabled.
                       100
                                Busy and dialtone detection disabled,
                       101      result codes 0-5, 10 enabled.

                       110      Busy tone detection disabled, dialtone
                                detection enabled, result codes 0-6, 10
                      111       enabled.

                                Busy tone detection enabled, dialtone
                                detection disabled, result codes 0-5, 7,
                                10 enabled.

                                Busy and dialtone detection enabled,
                                result codes 0-7, 10 enabled.

        7              0        Not used.

                          BIT-MAPPED REGISTER S23

  Format                    AT [cmds] S23=n [cmds]

  Example:                  ATS23=114<CR>

  Default:                  0, read-only (see note)

  Range:                    0 - 255

  Unit:                     Bit-mapped

  Description:              Controls guard tones. Also indicates detected
                            serial port speed and parity. Also provides
                            storage for remote digital loopback tests.

  Note:                     All bits except bits 6 and 7 are read-only.

        Bit          Value                       Function

         0           N/A         Reserved for internal use.

      3, 2, 1        000         Local speed detected at 300bps.

                     001         Local speed detected at 600bps.

                     010         Local speed detected at 1200bps.

                     011         Local speed detected at 2400bps.

                     100         Local speed detected at 4800bps.

                     101         Local speed detected at 9600bps.

                     110         Local speed detected at 19200bps.

                     111         Local speed detected at 38400bps.

       5, 4          00          Even parity.

                     10          Odd parity.

                     11          No parity.

       7, 6           00        Guard tone disabled.

                     01          550Hz guard tone enabled.

                     10          1800Hz guard tone enabled.

                          BIT-MAPPED REGISTER S27

  Format                   AT [cmds] S27=n [cmds]

  Example:                 ATS27=201<CR>

  Default:                 Unidentified

  Range:                   0 - 255

  Unit:                    Bit-mapped

  Description:             Controls communications mode, line type, and
                           protocol type.

  Note:                    Be aware that bits 2 and 3 are out of order.

       Bit           Value                      Function

     3, 1, 0          000      Asynchronous mode, serial port speed
                               follows connect speed.
                      001
                               Asynchronous off-line command mode and
                      101      synchronous connect mode.

                      110      Error-correcting mode.

                               Asynchronous mode, serial port speed
                               locked.

        2              0       Not used.

        4              0       Not used.

        5              0       Not used.

        6              0       Select CCITT protocols.

                       1       Select Bell protocols.

        7              0       DSR forced high.

                       1       DSR normal.

                                COMPRESSION

  Type:          Register

  Format:        AT [cmds] S41=n [cmds]

  Example:       AT S41=1<CR>

  Description:   Selects data compression.

    Command                              Function

     S41=0       Data compression disabled.

     S41=1       MNP data compression enabled.

     S41=2       V.42bis data compression enabled.

     S41=3       MNP and V.42bis data compression enabled.

                             COMPRESSION MODE

  Type:          Configuration

  Format:        AT %Cn

  Example:       AT %C1 -K1 -Q0 <CR>

  Description:   Selects active compression protocols.

  Command                                Function

  %C0            Compression disabled.

  %C1            MNP compression only enabled.

  %C2            V.42bis compression only enabled.

   %C3          MNP and V.42bis compression enabled.

                                   DIAL

  Type:          Immediate

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

  Example:       AT D 9W 1-800-555-2345^,,2554#; ATE1<CR>

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

    Command                              Function

       L         Redial last number dialed.

       ^         Transmit calling tone.

                               FLOW CONTROL

  Type:          Configuration

  Format:        AT [cmds] \Gn [cmds]

  Example:       AT \G1 &K3<CR>

  Description:   Selects flow control.

  Command                                Function

   \G0          Flow control disabled.

  \G1            Flow control enabled.

                              LOOPBACK TESTS

  Format              AT [cmds] S16=n [cmds]

  Example:            ATS16=32<CR>

  Default:            Unidentified

  Range:              0 - 255

  Unit:               Bit-mapped

  Description:        Enables loopback tests.

  Note:               Bit 3 is read-only.

     Bit       Value                         Function

      0         0       Local analog loopback test disabled.

               1         Local analog loopback test enabled.

      1        0         Not used.

      2         0       Local digital loopback test disabled.

               1         Local digital loopback test enabled.

      3         0       Modem is not performing remote digital loopback
                         test.
               1
                         Modem is performing remote digital loopback
                         test.

      4         0       Remote digital loopback test disabled.

               1         Remote digital loopback test enabled.

      5         0       Remote digital loopback with local self-test
                         disabled.
               1
                         Remote digital loopback with local self-test
                         enabled.

      6         0       Local analog loopback with local self-test
                         disabled.
               1
                         Local analog loopback with local self-test
                         enabled.

      7        0         Not used.

                             MNP10 COMPRESSION

  Type:          Configuration

  Format:        AT [cmds] -Kn [cmds]

  Example:       AT %C1 -K1 -Q0 <CR>

  Description:   Selects MNP10 data compression.

  Command                                Function

   -K0          MNP10 disabled.

  -K1            MNP10 enabled.

  -K2            MNP10 enabled after V.42 answer mode detection.

                              MNP10 FALL-BACK

  Type:          Configuration

  Format:        AT [cmds] -Qn [cmds]

  Example:       AT *H0 -Q1 <CR>

  Description:   Allows MNP10 to fall back to speeds slower than 4800bps.

  Command                                Function

  -Q0            MNP10 at 2400 and 1200bps disabled.

   -Q1          MNP10 at 2400 and 1200bps enabled.

                          MNP10 LINK NEGOTIATION

  Type:          Configuration

  Format:        AT [cmds] *Hn [cmds]

  Example:       AT *H0 -Q1 <CR>

  Description:   Sets the speed at which MNP10 link negotiation will
                 occur.

  Command                                Function

   *H0          Link will be negotiated at highest possible speed.

  *H1            Link will be negotiated at 1200bps.

  *H2            Link will be negotiated at 4800bps.

