
VEN-TEL, INC.

MCM96FAX

Modem Type                   Data (synchronous/asynchronous)/Fax
Maximum Data Rate            9600bps
Maximum Fax Rate             9600bps
Data Bus                     MCA
Fax Class                    Class I & II
Data Modulation Protocol     Bell 103A/212A

                             V.22, V.22bis, V.32
Fax Modulation Protocol      Unidentified
Error Correction/Compression MNP5, V.42, V.42bis

                          Proprietary Command Set

                                                                      V1145

                            BIT-MAPPED REGISTER

  Format                  AT [cmds] S14=n [cmds]

  Example:                ATS14=139<CR>

  Default:                171

  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 disabled.

                 1           Result code sending enabled.

       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

  Format                  AT [cmds] S21=n [cmds]

  Example:                ATS21=1<CR>

  Default:                0

  Range:                  0 - 255

  Unit:                   Bit-mapped

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

      Bit        Value                         Function

       0         0            Not used.

       1          0          Profile 0 enabled.

                 1            Profile 1 enabled.

       2         0            Not used.

      4, 3        00         DTR signal ignored.

                 01           Modem goes to command mode on low DTR.

                 10           Modem disconnects on low DTR. Auto-Answer
                              is disabled.
                 11
                              Modem is initialized on low DTR.

       5          0          DCD forced high.

                 1            DCD normal.

       6          0          DSR forced high.

                 1            DSR normal.

       7          0          Long Space Disconnect function disabled.

                 1            Long Space Disconnect function enabled.

                            BIT-MAPPED REGISTER

  Format                    AT [cmds] S22=n [cmds]

  Example:                  ATS22=114<CR>

  Default:                  118

  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       39/61ms at 10pps (North America)

                       1        33/67ms at 10pps (Europe)

                            BIT-MAPPED REGISTER

  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.

       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.

                                COMPRESSION

  Type:          Configuration

  Format:        AT %Cn

  Example:       AT %C0 #L0<CR>

  Description:   Selects data compression.

  Command                                Function

  %C0            Data compression disabled.

   %C1          Data compression enabled.

                               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.

                                ID DISPLAY

  Type:          Immediate

  Format:        AT [cmds] In [cmds]

  Example:       AT I1 &W<CR>

  Description:   Displays modem properties.

    Command                              Function

       I0        Display product code.

       I1        Display checksum.

       I2        Display checksum check.

       I3        Display version number.

                             INACTIVITY TIMER

  Type:             Register

  Format:           AT [cmds] \Tn [cmds]

  Example:          AT\T20<CR>

  Default:          0

  Range:            0-255

  Unit:             1 second

  Description:      Sets the length of time that the modem does not
                    receive information before it disconnects.

                               LOOPBACK TEST

  Format              AT [cmds] S16=n [cmds]

  Example:            ATS16=40<CR>

  Range:              0 - 190

  Unit:               Bit-mapped

  Description:        Configures loopback test options.

     Bit       Value                        Function

      0           0     Local analog loopback disabled.

                 1      Local analog loopback enabled.

      1          0      Not used.

      2           0     Local digital loopback disabled.

                 1      Local digital loopback enabled.

      3           0     Remote digital loopback not in progress.

                 1      Remote digital loopback in progress.

      4           0     Remote digital loopback disabled.

                 1      Remote digital loopback enabled.

      5           0     Remote digital loopback with self test disabled.

                 1      Remote digital loopback with self test enabled.

      6           0     Local analog loopback with self test disabled.

                 1      Local analog loopback with self test enabled.

      7          0      Not used.

                            BIT-MAPPED REGISTER

  Format                   AT [cmds] S27=n [cmds]

  Example:                 ATS27=201<CR>

  Default:                 73

  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       Switched line enabled.

                       1       Leased line enabled.

        4              0       Not used.

        5              0       Not used.

        6              0       Select CCITT protocols.

                       1       Select Bell protocols.

        7              0       Not used.

                                COMPRESSION

  Type:          Register

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

  Example:       ATS41=201<CR>

  Description:   Selects data compression.

  Command                                Function

  S41=0          Data compression disabled.

   S41=1        Data compression enabled.

