
IBM CORPORATION

MOD531 9600/2400 FAX/DATA

Card Type             Fax, Modem (asynchronous/synchronous)
Chip Set              Unidentified
Maximum Data Rate     2400bps
Maximum Fax Rate      9600bps
Data Bus              8-bit ISA
Fax Class             Class I
Data Modulation       Bell 103/212A
Protocol
                      ITU-T V.22, V.22bis
Fax Modulation        ITU-T V.21CH2, V.27ter, V.29
Protocol

[Image]

                                CONNECTIONS

         Function            Label            Function             Label

  Line out                        CN1       Line in                 CN2

                           SERIAL PORT ADDRESS

    Setting        JP1/A          JP1/B          JP1/C          JP1/D

  COM1 (3F8h)      Closed          Open          Open           Open

  COM2 (2F8h)       Open          Closed         Open           Open

  COM3 (3E8h)       Open           Open         Closed          Open

  COM4 (2E8h)       Open           Open          Open          Closed

                      INTERRUPT

  Setting    JP1/E      JP1/F      JP1/G      JP1/H

     3       Closed      Open      Open       Open

     4        Open      Closed     Open       Open

     5        Open       Open     Closed      Open

     7        Open       Open      Open      Closed

                         Proprietary AT Command Set

                          BIT-MAPPED REGISTER S14

  Format              AT [cmds] S14=n [cmds]

  Default:            170

  Range:              0-174

  Unit:               Bit-mapped

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

   Bit       Value                         Function

    0             0   Not used

    1              0  Command echo disabled

                  1   Command echo enabled

    2              0  Result codes enabled

                  1   Result codes disabled

    3              0  Display result codes in numeric format

                  1   Display result codes in verbose format

    4             0   Not used

    5              0  Tone dial enabled

                  1   Pulse dial enabled

    6             0   Not used

    7              0  Answer mode enabled

                  1   Originate mode enabled

                          BIT-MAPPED REGISTER S21

  Format                 AT [cmds] S21=n [cmds]

  Default:               0

  Range:                 0-253

  Unit:                  Bit-mapped

  Description:           Selects jack type, CTS/DCD/DSR signals, low DTR
                         action, and the long space disconnect function.

    Bit       Value                          Function

     0               0   Selects RJ-11, RJ-41S, or RJ45S jack

                    1    Selects RJ-12 or RJ-13 jack

     1              0    Not used

     2               0   CTS follows RTS

                    1    CTS forced high

   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 S22

  Format               AT [cmds] S22=n [cmds]

  Default:             118

  Range:               0-127

  Unit:                Bit-mapped

  Description:         Controls speaker volume and controls, and limits
                       results codes.

    Bit      Value                          Function

   1, 0           00   Off volume

                  01   Low level volume

                  10   Medium level volume

                 11    High level volume

   3, 2           00   Speaker off

                  01   Speaker off on carrier

                  10   Speaker always on

                 11    Speaker on during handshake

  6, 5, 4        000   Basic result codes only enabled

                 100   Basic and connection speed result codes enabled

                 101   Basic and connection speed result codes and
                       dialtone detection enabled
                 110
                       All result codes except dialtone detection enabled
                111
                       All result codes enabled

                          BIT-MAPPED REGISTER S23

  Format                AT [cmds] S23=n [cmds]

  Default:              7

  Range:                0-189

  Unit:                 Bit-mapped

  Description:          Grants/denies remote digital loopback, controls
                        DTE rate and parity, and sets guard tone.

    Bit       Value                         Function

     0              0   Remote digital loopback denied

                   1    Remote digital loopback allowed

  3, 2, 1         000   Sets serial port speed to 0-300bps

                  001   Sets serial port speed to 600bps

                  010   Sets serial port speed to 1200bps

                  011   Sets serial port speed to 2400bps

                  100   Sets serial port speed to 4800bps

                  101   Sets serial port speed to 9600bps

                 110    Sets serial port speed to 19200bps

    5,4            00   Parity even

                   01   Not used

                   10   Parity odd

                  11    No Parity

   7, 6            00   Guard tone disabled

                   01   Guard tone disabled

                  10    Guard tone 1800Hz enabled

                          BIT-MAPPED REGISTER S27

  Format               AT [cmds] S27=n [cmds]

  Default:             9

  Range:               0-109

  Unit:                Bit-mapped

  Description:         Selects line type, clock source, and ITU-T/Bell
                       modes.

    Bit      Value                          Function

  3, 1, 0       101    Not used

     2             0   Switched line

                  1    Leased line

   5, 4           00   Local modem generates transmit clock source

                  01   Local DTE generates transmit clock source

                 10    Remote DCE/DTE generates transmit clock source

     6             0   ITU/T mode

                  1    Bell mode

                          BIT-MAPPED REGISTER S28

  Format               AT [cmds] S28=n [cmds]

  Default:             0

  Range:               0-31

  Unit:                Bit-mapped

  Description:         Controls V.23 split speed, transmit/receive speed,
                       half duplex; and pulse dialing.

   Bit       Value                          Function

    0              0   V.23 split speed operation disabled

                  1    V.23 split speed operation enabled

    1              0   75bps transmit, 1200bps receive enabled

                  1    1200bps transmit, 75bps receive disabled

    2              0   1200bps transmit, 1200bps receive disabled

                  1    1200bps transmit, 1200bps receive enabled

   4, 3           00   39ms make/61ms break at 10pps

                  01   33ms make/67ms break at 10pps

                  10   39ms make/61ms break at 20pps

                 11    33ms make/67ms break at 20pps

                          BIT-MAPPED REGISTER S31

  Format:             AT [cmds] S31=n [cmds]

  Default:            2

  Range:              0-10

  Unit:               Bit-mapped

  Description:        Controls auto-baud function and result codes

     Bit       Value                        Function

      0            0    Not used

      1              0   Auto-baud disabled

                    1    Auto-baud enabled

     3, 2           00   DTE speed displayed in result codes

                    01   Extended result codes enabled; DCE speed
                         displayed in result codes.
                   10
                         DCE speed displayed in result codes

                          BIT-MAPPED REGISTER S39

  Format               AT [cmds] S39=n [cmds]

  Default:             3

  Range:               0-6

  Unit:                Bit-mapped

  Description:         Controls flow control

    Bit      Value                          Function

  2, 1, 0        000   Flow control disabled

                 011   Hardware flow control enabled

                 100   Normal software flow control enabled

                 101   Transparent software flow control enabled

                110    Both hardware and software flow control enabled

                          BIT-MAPPED REGISTER S40

  Format                 AT [cmds] S40=n [cmds]

  Default:               105

  Range:                 0-239

  Unit:                  Bit-mapped

  Description:           Controls power level and break handling; selects
                         MNP extended services, link negotiation, and
                         block size.

    Bit       Value                          Function

     0               0   MNP extended services disabled

                    1    MNP extended services enabled

     1               0   Power level adjustment enabled

                    1    Power level adjustment disabled

     2               0   Link will be negotiated at highest possible
                         speed
                    1
                         Link will be negotiated at 1200bps

  5, 4, 3          000   \K0

                   001   \K1

                   010   \K2

                   011   \K3

                   100   \K4

                  101    \K5

   7, 6             00   MNP block size is 64 characters

                    01   MNP block size is 128 characters

                    10   MNP block size is 192 characters

                   11    MNP block size is 256 characters

                          BIT-MAPPED REGISTER S41

  Format           AT [cmds] S41=n [cmds]

  Default:         3

  Range:           0-31

  Unit:            Bit-mapped

  Description:     Selects compression, auto-retrain, flow control, and
                   MNP mode.

   Bit    Value                           Function

  1 - 0       00   Data compression disabled

              01   MNP5 enabled

              10   V.42bis enabled

             11    MNP5 and V.42bis enabled

    2          0   Auto-retrain disabled

              1    Auto-retrain enabled

    3          0   Flow control disabled

              1    Flow control enabled

    4          0   Stream mode for MNP

              1    Block mode for MNP

                         DIAL STORED PHONE NUMBER

  Type:          Immediate

  Format:        AT [cmds] S=n

  Description:   Dials a phone number previously stored in AT&Zn

                       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

                            REPORT INFORMATION

  Type:          Immediate

  Format:        AT [cmds] In [cmds]

  Description:   Displays information requested

    Command                              Function

       I0        Display product identification code

       I1        Display ROM checksum

       I2        Display OK or ERROR for ROM checksum

       I3        Display firmware revision

       I4        Display OEM string

       I5        Display country code

       I6        Display data pump model

       I7        Reports manufacturer and model information

                                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.

                           S-REGISTER - CONTENTS

  Type:          Immediate

  Format:        AT [cmds] ? [cmds]

  Description:   Displays contents of last S-register access

                                TEST MODES

  Type:              Register

  Format             AT [cmds] S16=n [cmds]

  Default:           128

  Range:             0-128

  Unit:              Bit-mapped

  Description:       Controls loopback tests, analog, digital, remote
                     digital, and self tests.

   Bit      Value                          Function

    0            0   Local analog loopback not in progress

                1    Local analog loopback in progress

    1           0    Not used

    2            0   Local digital loopback not in progress

                1    Local digital loopback in progress

    3            0   Modem not in remote digital loopback

                1    Remote digital loopback in progress

    4            0   Remote digital loopback not requested

                1    Remote digital loopback requested

    5            0   Remote digital loopback w/ self-test not in progress

                1    Remote digital loopback w/ self-test in progress

    6            0   Local analog loopback w/ self-test not in progress

                1    Local analog loopback w/ self-test in progress

    7           1    Not used

                         TRANSMISSION LEVEL - PSTN

  Type             Register

  Format           AT [cmds] S91=n [cmds]

  Default          10

  Range            0-15

  Unit             -1 dBm

  Description      Sets the signal level for transmission over switched
                   phone lines

                         TRANSMISSION LEVEL - FAX

  Type:          Register

  Format:        AT [cmds] S92=n [cmds]

  Default:       10

  Range:         0-15

  Unit:          -1 dBm

  Description:   Sets the signal level for transmission while in fax mode

