
ELSA, INC.

MICROLINK 33.6TQV

Card Type                    Modem (asynchronous)
Chipset                      Unidentified
I/O Options                  Voice
Maximum Data Rate            33.6Kbps
Maximum Fax Rate             14.4Kbps
Data Modulation              Bell 103A, 212A

                             ITU-T V.21, V.22, V.23, V.32, V.32bis, V.34

                             Rockwell V.FC
Fax Modulation               ITU-T V.17, V.27ter, V.29, V.33
Error Correction/Compression MNP5, V.42, V.42bis
Fax Class                    Class I & II
Data Bus                     Serial

[Image]

                                CONNECTIONS

          Function             Label            Function            Label

  Telephone line in             CN1     DC power in                 CN4

  Telephone line out            CN2     Power switch                SW1

  Serial port                   CN3

                          DIAGNOSTIC LED(S)

    LED        Color      Status               Condition

   POWER        Red         On                Power is on

   POWER        Red         Off               Power is off

    TXD         Red         On         Modem is transmitting data

    TXD         Red         Off      Modem is not transmitting data

    RXD         Red         On          Modem is receiving data

    RXD         Red         Off       Modem is not receiving data

    DTR         Red         On             DTR signal is high

    DTR         Red         Off            DTR signal is low

    DSR         Red         On             DSR signal is high

    DSR         Red         Off            DSR signal is low

    RTS         Red         On             RTS signal is high

    RTS         Red         Off            RTS signal is low

                   DIAGNOSTIC LED(S) (CON'T)

    LED      Color      Status             Condition

    CTS       Red         On          CTS signal is high

    CTS       Red        Off           CTS signal is low

    DCD       Red         On        Carrier signal detected

    DCD       Red        Off      Carrier signal not detected

    OH        Red         On           Modem is off-hook

    OH        Red        Off           Modem is on-hook

                        SUPPORTED STANDARD COMMANDS

                             Basic AT Commands

  +++, comma, A/

  A, B, E, H, L, M, O, P, T, V, X, Z

  &D, &F, &S, &T, &V, &W, &Y, &Z

                           Extended AT Commands

  \C, \J, \K, \N, \Q, \T, \X

  %A, %C, %E

                            Special AT Commands

  -J

                                S-Registers

  S0, S1, S2, S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S16, S21, S22,
  S25, S26, S30, S38

            Note: See MHI help file for complete information.

                         Proprietary AT Command Set

                     AUTO-RELIABLE FALLBACK CHARACTER

  Type:                  Register

  Format:                AT [cmds] S47=n [cmds]

  Default:               13

  Range:                 0-127

  Unit:                  1 ASCII character

  Description:           Sets the character used as the auto-reliable
                         fallback character; S47=0 will disable this
                         function.

                          BIT-MAPPED REGISTER S14

  Format:             AT [cmds] S14=n [cmds]

  Default:            81

  Range:              0 - 254

  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  Command set enabled.

                  1   Command set disabled. (See -H command for more
                      information.)

    5              0  Tone dial enabled.

                  1   Pulse dial enabled.

    6              0  Polling not allowed during connection
                      establishment.
                  1
                      Polling allowed during connection establishment.

    7              0  Answer mode enabled.

                  1   Originate mode enabled.

                          BIT-MAPPED REGISTER S27

  Format:             AT [cmds] S27=n [cmds]

  Default:            0

  Range:              0 - 192

  Description:        Controls modulation protocol and duplexing.

     Bit       Value                        Function

    5 - 0      000000    Not used.

      6              0   ITU/T mode.

                    1    Bell mode.

      7              0   Full-duplex mode.

                    1    Half-duplex mode.

                          BIT-MAPPED REGISTER S28

  Format:                   AT [cmds] S28=n [cmds]

  Default:                  6

  Range:                    0 - 239

  Description:              Controls low DTR control, automatic retrain,
                            bit rate tolerance, V.100 fallback, and data
                            format.

       Bit          Value                      Function

       1, 0               00   Modem set for 8 data bits in direct mode.

                          01   Modem set for 9 data bits in direct mode.

                          10   Modem set for 10 data bits in direct mode.

                         11    Modem set for 11 data bits in direct mode.

       3, 2               00   Non-V.100 fallback enabled.

                          01   V.100 fallback enabled.

                          10   Fallback disabled.

                         11    V.100 fallback enabled.

        4                 0    Not used.

        5                  0   Bit rate tolerance set to between -2.5%
                               and +1%.
                          1
                               Bit rate tolerance set to between -2.5%
                               and +2.3%.

        6                  0   Automatic retrain enabled.

                          1    Automatic retrain disabled.

        7                  0   Modem will not accept calls and generate
                               RING response when DTR is low.
                          1
                               Modem will accept calls and generate RING
                               response when DTR is low.

                          BIT-MAPPED REGISTER S29

  Format:                   AT [cmds] S29=n [cmds]

  Default:                  66

  Range:                    0 - 247

  Description:              Controls V.FC ID for V.8, trellis coding,
                            V.32 clear down sequence, V.34 and V.FC rate
                            re-negotiation, V.8 adaptation, asymmetric
                            bit rates, and fallback to V.23.

       Bit           Value                     Function

        0                  0  Fallback to V.23 enabled.

                          1   Fallback to V.23 disabled.

        1                  0  Asymmetric bit rates disabled.

                          1   Asymmetric bit rates enabled.

        2                  0  V.8 adaptation enabled.

                          1   V.8 adaptation disabled.

         3                0    Not used.

         4                 0   V.34 and V.FC rate re-negotiation enabled.

                          1    V.34 and V.FC rate re-negotiation
                               disabled.

         5                 0   V.32 clear down sequence disabled.

                          1    V.32 clear down sequence enabled.

         6                 0   Trellis coding in V.32 disabled.

                          1    Trellis coding in V.32 enabled.

         7                 0   V.8 answer tone includes V.FC
                               identification.
                          1
                               V.8 answer tone does not include V.FC
                               identification.

                          BIT-MAPPED REGISTER S31

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

  Default:               0

  Range:                 0 - 63

  Description:           Controls guard tone, calling tone, manual
                         dialing DTR connection, and DTR dialing.

      Bit         Value                       Function

      1, 0             00   Guard tone disabled.

                       01   550Hz guard tone enabled.

                      10    1800Hz guard tone enabled.

       2                0   Calling tone enabled.

                       1    Calling tone disabled.

       3                0   V.25 calling tone enabled.

                       1    V.8 calling tone enabled.

       4                0   Modem will not attempt to connect on high
                            DTR.
                       1
                            Modem will attempt to connect on high DTR.

       5                0   DTR dialing disabled.

                       1    DTR dialing enabled.

                          BIT-MAPPED REGISTER S33

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

  Default:            0

  Range:              0 - 14

  Description:        Controls callback mode, callback trace, and remote
                      configuration.

     Bit        Value                        Function

     0, 1            00  Callback disabled.

                     01  Callback enabled; RING and CONNECT are displayed
                         before login prompts.
                    10
                         Callback enabled; RING and CONNECT are displayed
                         after login prompts.

      2              0   Callback trace disabled.

                    1    Callback trace enabled.

      3               0  Remote configuration disabled.

                     1   Remote configuration enabled.

                          BIT-MAPPED REGISTER S36

  Format:           AT [cmds] S36=n [cmds]

  Default:          131

  Range:            0 - 134

  Description:      Controls connect mode and Selective Reject.

     Bit      Value                         Function

    2 - 0         000  Normal mode enabled.

                  001  Direct mode enabled.

                  010  MNP reliable mode enabled.

                  011  Auto-reliable mode enabled.

                  100  V.42 reliable mode enabled.

                  101  V.42 auto-reliable mode enabled.

                 110   V.42 or MNP reliable mode enabled.

    6 - 3       0000    Not used.

      7             0   Selective Reject enabled.

                   1    Selective Reject disabled.

                          BIT-MAPPED REGISTER S37

  Format:            AT [cmds] S37=n [cmds]

  Default:           19

  Range:             0 - 211

  Description:       Controls line, modem, and serial port speed options.

     Bit       Value                        Function

    4 - 0       00001   Set line speed to 75/1200bps.

                00010   Set line speed to 1200/75bps.

                00011   Set line speed to 300bps.

                00101   Set line speed to 1200bps.

                00110   Set line speed to 2400bps.

                00111   Set line speed to 4800bps.

                01000   Set line speed to 7200bps.

                01001   Set line speed to 9600bps.

                01010   Set line speed to 12Kbps.

                01011   Set line speed to 14.4Kbps.

                01100   Set line speed to 16.8Kbps.

                01101   Set line speed to 19.2Kbps.

                01110   Set line speed to 21.6Kbps.

                01111   Set line speed to 24Kbps.

                10000   Set line speed to 26.4Kbps.

                10001   Set line speed to 28.8Kbps.

                10010   Set line speed to 31.2Kbps.

               10011    Set line speed to 33.6Kbps.

      5             0   Not used.

      6              0  Modem port speed changed automatically.

                    1   User must change modem port speed with %B
                        command.

      7              0  Serial port speed follows connect speed.

                    1   Serial port speed locked.

                          BIT-MAPPED REGISTER S48

  Format:                   AT [cmds] S48=n [cmds]

  Default:                  164

  Range:                    0 - 180

  Description:              Controls V.42 detection phase, auto-reliable
                            time buffer, and break type.

       Bit          Value                      Function

      1 - 0              00    Not used.

        2                  0  V.42 detection phase disabled.

                          1   V.42 detection phase enabled.

       4, 3               00   Data is discarded during auto-reliable
                               time.
                          01
                               Data is buffered for 4 seconds or 200
                         10    characters during auto-reliable time.

                               Data is discarded during auto-reliable
                               time; modem returns to normal mode on
                               receiving auto-reliable fallback
                               character.

      7 - 5              000   \K0 is selected.

                         001   \K1 is selected.

                         010   \K2 is selected.

                         011   \K3 is selected.

                         100   \K4 is selected.

                        101    \K5 is selected.

                          BIT-MAPPED REGISTER S87

  Format:                    AT [cmds] S87? [cmds]

  Default:                   Read-only

  Range:                     0 - 211

  Description:               Returns a value indicating current transmit
                             line speed, fax mode connection, and
                             modulation protocol type.

        Bit           Value                      Meaning

       4 - 0             00001   Transmit line speed is 75/1200bps.

                         00010   Transmit line speed is 1200/75bps.

                         00011   Transmit line speed is 300bps.

                         00101   Transmit line speed is 1200bps.

                         00110   Transmit line speed is 2400bps.

                         00111   Transmit line speed is 4800bps.

                         01000   Transmit line speed is 7200bps.

                         01001   Transmit line speed is 9600bps.

                         01010   Transmit line speed is 12Kbps.

                         01011   Transmit line speed is 14.4Kbps.

                         01100   Transmit line speed is 16.8Kbps.

                         01101   Transmit line speed is 19.2Kbps.

                         01110   Transmit line speed is 21.6Kbps.

                         01111   Transmit line speed is 24Kbps.

                         10000   Transmit line speed is 26.4Kbps.

                         10001   Transmit line speed is 28.8Kbps.

                         10010   Transmit line speed is 31.2Kbps.

                        10011    Transmit line speed is 33.6Kbps.

                      BIT-MAPPED REGISTER S87 (CON'T)

  Bit     Value                            Meaning

    5           0   Not used.

    6            0  Modem is not connected in fax mode.

                1   Modem is connected in fax mode.

    7            0  ITU-T protocols selected.

                1   Bell protocols selected.

                          BIT-MAPPED REGISTER S88

  Format:            AT [cmds] S88? [cmds]

  Default:           Read-only

  Range:

  Description:       Returns a value indicating

     Bit      Value                         Meaning

      0             0  Modem is not connected with MNP1 through MNP4.

                   1   Modem is connected with MNP1 through MNP4.

      1             0   Modem is not connected with MNP5.

                   1    Modem is connected with MNP5.

      2             0   Modem is not connected with V.42.

                   1    Modem is connected with V.42.

      3             0   Modem is not connected with V.42bis.

                   1    Modem is connected with V.42bis.

                          BIT-MAPPED REGISTER S89

  Format:                 AT [cmds] S89? [cmds]

  Default:                Read-only

  Range:                  0 - 211

  Description:            Returns a value indicating current receive line
                          speed and modulation protocol.

       Bit          Value                       Meaning

      4 - 0           00001   Receive line speed is 75/1200bps.

                      00010   Receive line speed is 1200/75bps.

                      00011   Receive line speed is 300bps.

                      00101   Receive line speed is 1200bps.

                      00110   Receive line speed is 2400bps.

                      00111   Receive line speed is 4800bps.

                      01000   Receive line speed is 7200bps.

                      01001   Receive line speed is 9600bps.

                      01010   Receive line speed is 12Kbps.

                      01011   Receive line speed is 14.4Kbps.

                      01100   Receive line speed is 16.8Kbps.

                      01101   Receive line speed is 19.2Kbps.

                      01110   Receive line speed is 21.6Kbps.

                      01111   Receive line speed is 24Kbps.

                      10000   Receive line speed is 26.4Kbps.

                      10001   Receive line speed is 28.8Kbps.

                      10010   Receive line speed is 31.2Kbps.

                     10011    Receive line speed is 33.6Kbps.

                      BIT-MAPPED REGISTER S89 (CON'T)

   Bit      Value                           Meaning

   7 - 5         000  Modulation protocol in use is V.23.

                 001  Modulation protocol in use is V.21.

                 010  Modulation protocol in use is V.22bis.

                 011  Modulation protocol in use is V.32.

                 100  Modulation protocol in use is V.32bis.

                 101  Modulation protocol in use is V.FC.

                 110  Modulation protocol in use is V.34.

                111   Modulation protocol in use is V.34 with asymmetric
                      bit rates.

                          BIT-MAPPED REGISTER S95

  Format:                  AT [cmds] S95=n [cmds]

  Default:                 8

  Range:                   0 - 184

  Description:             Controls result code options and CONNECT
                           response after invalid escape sequence.

      Bit          Value                       Function

      3 - 0            0000   Extended result codes disabled.

                       0001   /REL extended result codes enabled.

                       0010   LAPM and MNP extended result codes enabled.

                      1000    V.42bis, MNP5, and modulation protocol (if
                              selected with S96) extended result codes
                              enabled.

        4                 0   Modem uses \V command to select extended
                              result codes.
                         1
                              Modem always displays extended result
                              codes.

        5                 0   Modem will send CONNECT response after
                              invalid escape sequence.
                         1
                              Modem will not send CONNECT response after
                              invalid escape sequence.

      7, 6               00   Result codes enabled.

                         01   Result codes disabled.

                        10    Result codes disabled in answer mode.

                          BIT-MAPPED REGISTER S96

  Format:                   AT [cmds] S96=n [cmds]

  Default:                  8

  Range:                    0 - 110

  Description:              Controls register display, end-of-page
                            prompting, modem language, bit rate display,
                            and \V8 result code format.

       Bit           Value                      Function

       1, 0               00   Modem will display register values in
                               decimal.
                          01
                               Modem will display register values in
                         10    hexadecimal.

                               Modem will display register values in
                               binary.

         2                 0   Modem will prompt user to press a key
                               after a full page of text.
                          1
                               Modem will not prompt user to press a key
                               after a full page of text.

         3                 0   Modem text displayed in German.

                          1    Modem text displayed in English.

         4                0    Not used.

         5                 0   Modem will display transmit bit rate.

                          1    Modem will display both transmit and
                               receive bit rate.

         6                 0   Modem will display only error correction
                               and compression result codes with \V8.
                          1
                               Modem will display error correction,
                               compression, and modulation result codes
                               with \V8.

                         BIT-MAPPED REGISTER S130

  Format:                  AT [cmds] S130=n [cmds]

  Default:                 4

  Range:                   0 - 220

  Description:             Controls T.4 bit order, fax mode, fill bit
                           removal, fax mode flow control, and V.17
                           modulation.

       Bit          Value                      Function

       1, 0             00    Not used.

        2                 0   T.4 bit order for Class 2 fax receive
                              reversed.
                         1
                              T.4 bit order for Class 2 fax receive
                              normal.

        3                 0   Modem is in normal fax mode.

                         1    Modem is in Elsa TransFax mode.

        4                 0   Fill bits are removed from T.4 data.

                         1    Fill bits are not removed from T.4 data.

        5                0    Not used.

        6                 0   Unidirectional CTS and XON/XOFF flow
                              control enabled.
                         1
                              Flow control set by \Q command.

        7                 0   V.17 fax modulation enabled.

                         1    V.17 fax modulation disabled.

                          CALL FAILURE INDICATION

  Type:                 Register (read-only)

  Format:               AT [cmds] S86? [cmds]

  Description:          Returns a value indicating the cause of the last
                        disconnect.

        Value                                Meaning

          0             Normal disconnection, no error occurred.

          4             Loss of carrier occurred.

          5             Negotiation phase failed; modem at remote station
                        has no error correction.

          6             Remote modem is not answering protocol requests.

          7             Remote modem is only functioning synchronously.

          8             Modems could not find a common framing scheme.

          9             Modems could not find a common protocol.

          10            Remote modem is sending incorrect protocol
                        requests.

          11            Synchronous information is missing; connection
                        terminated after 30 seconds.

          12            Normal disconnect initiated by the remote modem.

          13            Remote modem is no longer answering; connection
                        terminated after 10 re-transmissions.

          14            Protocol violation occurred.

          15            Compression error occurred.

          16            Inactivity timer has elapsed.

          17            No loop current detected.

          20            Busy tone detected.

          21            No dial tone detected.

          22            No answer tone detected.

          23            No connection reached, connection timed out, or
                        wrong modulation type.

          24            Fallback not permitted because of AT%L2;
                        connection terminated.

          25            No modem or fax is answering at the number
                        called.

          30            ATH was entered online.

          31            ATZ was entered online.

          32            AT&T0 was entered - modem is in analog loopback
                        test.

          33            Keystroke received during handshaking.

          34            DTR signal dropped.

          60            V.32/V32bis handshake signal AA, CC, AC or CA
                        missing.

          61            V.32/V.32bis handshake signal R1, R2 or R3
                        missing.

          62            V.32/V.32bis handshake signal S missing.

          63            V.32/V.32bis handshake signal transition from S
                        to \S missing.

          64            V.32/V.32bis handshake signal E missing.

          68            No answer to automatic retrain.

                                 CALLBACK

  Type:                 Configuration

  Format:               AT [cmds] $Bn [cmds]

  Description:          Selects what type of callback procedure is used.

       Command                              Function

         $B0            Callback disabled.

         $B1            Callback enabled; RING and CONNECT result codes
                        are displayed before login prompts.

         $B2            Callback enabled; RING and CONNECT result codes
                        are displayed after login prompts.

                              CALLBACK DELAY

  Type:                   Register

  Format:                 AT [cmds] S43=n [cmds]

  Default:                1

  Range:                  0 - 2

  Unit:                   1 minute

  Description:            Sets the amount of time that must elapse before
                          the modem will attempt a callback sequence.

                   CALLBACK - MAXIMUM CALLBACK ATTEMPTS

  Type:             Register

  Format:           AT [cmds] S35=n [cmds]

  Default:          3

  Range:            1 - 99

  Unit:             1 callback

  Description:      Sets the maximum number of callback attempts the
                    modem will perform.

                              CALLBACK TRACE

  Type:                  Configuration

  Format:                AT [cmds] $Tn [cmds]

  Description:           Selects whether the progress of callback
                         procedures will be displayed as a diagnostic
                         tool.

        Command                              Function

          $T0            Callback trace disabled.

          $T1            Callback trace enabled.

                                COMMAND SET

  Type:                  Configuration

  Format:                AT [cmds] -Hn [cmds]

  Description:           Selects whether the modem will generate result
                         codes and accept commands. When the command set
                         is disabled, the modem will still accept the -H
                         and D commands, and will act as if S0=1.

        Command                              Function

          -H0            Command set enabled.

          -H1            Command set disabled.

                                COMPRESSION

  Type:          Register

  Format:        AT [cmds] S46=n [cmds]

  Description:   Selects data compression.

    Command                              Function

     S46=0       Data compression disabled.

     S46=1       MNP5 enabled.

     S46=2       V.42bis enabled.

     S46=3       MNP5 and V.42bis enabled.

                         CTS, DCD, AND DSR SIGNALS

  Format:            AT [cmds] S52=n [cmds]

  Default:           4

  Range:             0 - 11

  Description:       Controls the behaviour of the CTS, DCD, and DSR
                     signals.

     Bit      Value                         Function

      0             0  DSR forced high.

                   1   DSR normal.

      1             0  CTS forced high.

                   1   CTS normal.

    3, 2           00   DCD forced high.

                   01   DCD forced high after carrier signal is detected.

                  10    DCD forced high except at disconnect.

                                DATA FORMAT

  Type:              Register

  Format:            AT [cmds] S53=n [cmds]

  Description:       Controls the data length, parity, and stop bit for
                     the local serial port.

      Command                              Function

       S53=0         Data format set to 8N1, 7E1, 7O1, or 7N2.

       S53=1         Data format set to 8E1

       S53=2         Data format set to 8O1

       S53=3         Data format set to 8N2

                                DCD SIGNAL

  Type:          Configuration

  Format:        AT [cmds] &Cn [cmds]

  Description:   Controls the behaviour of the DCD signal.

    Command                              Function

      &C0        DCD forced high.

      &C1        DCD forced high after carrier signal is detected.

      &C2        DCD forced high except at disconnect.

                                   DIAL

  Type:                  Immediate

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

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

        Command                              Function

          DL             Re-dial last number.

          DM             Make a LAPM reliable mode connection this call.

          DP             Pulse dialing enabled.

          DQ             Make an LAPM auto-reliable mode connection this
                         call.

          DSn            Dial stored telephone number n.

          DT             Tone dialing enabled.

          DV             Make an LAPM or MNP reliable mode connection
                         this call.

          DW             Dialing resumed following dial tone detection.

          DX             Make an auto-reliable mode connection this call.

          DY             Make an MNP reliable mode connection this call.

          DZ             Make a normal mode connection this call.

          D,             Dialing paused for amount of time specified in
                         S8 register.

          D<             Dialing paused for 1 second.

          D/n            Dial stored telephone number n.

          D!             Flash function initiated. Modem commanded to go
                         off-hook for specified time before returning
                         on-hook.

          D@             Wait for Quiet Answer function enabled. Modem
                         waits until a "quiet answer," a ring-back signal
                         followed by silence up to the time specified in
                         S7, is received prior to executing the rest of
                         the dial string.

          D&             Flash function initiated. Modem commanded to go
                         off-hook for specified time before returning
                         on-hook.

          D=             Dialing paused for 3 seconds.

          D[             Flash function initiated. Modem commanded to go
                         off-hook for specified time before returning
                         on-hook.

          D;             Modem returned to idle state after dialing. The
                         semicolon can only be placed at the end of the
                         dial command.

          D:             Dialing resumed following dial tone detection.

                          DISCONNECT BUFFER DELAY

  Type:                  Configuration

  Format                 AT [cmds] %Dn [cmds]

  Default:               0

  Range:                 0-255

  Unit:                  1 second

  Description:           Sets maximum duration allowed during buffered
                         data calls for modem to perform clearing
                         functions after losing carrier-signal or
                         receiving a clear call signal from the remote
                         modem and before initiating hang-up process.

                           DISPLAY CONFIGURATION

  Type:                 Immediate

  Format:               AT [cmds] \Sn [cmds]

  Description:          Displays the settings of all commands.

        Command                             Function

          \S0           Displays all command settings.

          \S1           Displays all command settings.

          \S2           Displays line and host interface, protocol, and
                        result code/speaker command settings.

          \S3           Displays host interface, protocol, and result
                        code/speaker command settings.

          \S4           Displays host interface and result code/speaker
                        command settings.

          \S5           Displays result code/speaker command settings.

                         DISPLAY FIRMWARE VERSION

  Type:          Immediate

  Format:        AT [cmds] %V [cmds]

  Description:   Displays the current firmware version.

                            DISPLAY INFORMATION

  Type:          Immediate

  Format:        AT [cmds] In [cmds]

  Description:   Displays information requested about the modem.

    Command                              Function

       I0        Displays product identification code.

       I1        Displays ROM checksum.

       I2        Tests and displays ROM checksum result.

       I3        Displays firmware revision.

       I4        Displays configuration.

       I5        Displays serial number.

       I6        Displays product name.

       I7        Displays result of power-up self-test.

       I9        Displays Plug-N-Play information.

                             DISPLAY REGISTERS

  Type:          Immediate

  Format:        AT [cmds] %R [cmds]

  Description:   Displays all status registers.

                          DISPLAY STORED NUMBERS

  Type:          Immediate

  Format:        AT [cmds] \F [cmds]

  Description:   Displays all stored telephone numbers.

                            DSR AND CTS SIGNALS

  Type:          Configuration

  Format:        AT [cmds] \Dn [cmds]

  Description:   Controls the behaviour of the DSR and CTS signals.

    Command                              Function

      \D0        DSR and CTS forced high.

      \D1        DSR normal, CTS forced high.

      \D2        DSR forced high, CTS follow CD.

      \D3        DSR normal, CTS forced high.

                                DTR DIALING

  Type:          Configuration

  Format:        AT [cmds] $Dn [cmds]

  Description:   Selects whether the modem will use DTR dialing.

    Command                              Function

      $D0        DTR dialing disabled.

      $D1        DTR dialing enabled.

                      EXTENDED RESULT CODE SELECTION

  Type:                Configuration

  Format:              AT [cmds] -Mn [cmds]

  Description:         Selects whether the modem will use the \V command
                       to select extended result codes.

       Command                              Function

         -M0           Modem uses \V command to select extended result
                       codes.

         -M1           Modem always displays extended result codes.

                           EXTENDED RESULT CODES

  Type:                  Configuration

  Format:                AT [cmds] \Vn [cmds]

  Description:           Selects extended result codes.

        Command                              Function

          \V0            Extended result codes disabled.

          \V1            /REL extended result codes enabled.

          \V2            LAPM and MNP extended result codes enabled.

          \V8            V.42bis, MNP5, and modulation protocol (if
                         selected with S96) extended result codes
                         enabled.

                           FLOW CONTROL OPTIONS

  Format:           AT [cmds] S51=n [cmds]

  Default:          3

  Range:            0 - 20

  Description:      Controls flow control type and XON/XOFF pass-through.

     Bit      Value                         Function

    2 - 0         000  Flow control disabled.

                  001  Bidirectional XON/XOFF flow control enabled.

                  010  CTS flow control by DCE enabled.

                  011  Bidirectional RTS/CTS flow control enabled.

                 100   Unidirectional XON/XOFF flow control by DCE
                       enabled.

      3            0    Not used.

      4             0   XON/XOFF signals trapped by local modem.

                   1    XON/XOFF signals passed through by local modem.

                        GUARD TONE AND CALLING TONE

  Type:                  Configuration

  Format:                AT [cmds] &Gn [cmds]

  Description:           Commands the modem to transmit a calling tone,
                         and a guard tone in V.22 or V.22bis modes.

        Command                              Function

          &G0            Guard tone disabled, calling tone enabled.

          &G1            550Hz guard tone and calling tone enabled.

          &G2            1800Hz guard tone and calling tone enabled.

          &G4            Guard and calling tones disabled.

          &G5            550Hz guard tone enabled, calling tone disabled.

          &G6            1800Hz guard tone enabled, calling tone
                         disabled.

                    INVALID ESCAPE SEQUENCE RESULT CODE

  Type:                  Configuration

  Format:                AT [cmds] *Qn [cmds]

  Description:           Selects whether the modem will send a CONNECT
                         response when an invalid escape sequence has
                         been entered.

        Command                              Function

          *Q0            Modem will send CONNECT response.

          *Q1            Modem will not send CONNECT response.

                                LINE SPEED

  Type:          Configuration

  Format:        AT [cmds] %Bnnnn [cmds]

  Description:   Sets the speed that the modem will attempt to connect
                 at.

    Command                              Function

     %B300       Set speed to 300bps.

     %B1200      Set speed to 1200bps.

   %B1200/75     Set speed to 1200/75bps.

   %B75/1200     Set speed to 75/1200bps.

     %B2400      Set speed to 2400bps.

     %B4800      Set speed to 4800bps.

     %B7200      Set speed to 7200bps.

     %B9600      Set speed to 9600bps.

    %B12000      Set speed to 12Kbps.

    %B14400      Set speed to 14.4Kbps.

    %B16800      Set speed to 16.8Kbps.

    %B19200      Set speed to 19.2Kbps.

    %B21600      Set speed to 21.6Kbps.

    %B24000      Set speed to 24Kbps.

    %B26400      Set speed to 26.4Kbps.

    %B28800      Set speed to 28.8Kbps.

    %B31200      Set speed to 31.2Kbps.

    %B33600      Set speed to 33.6Kbps.

                     LOCAL SERIAL PORT SPEED - CURRENT

  Format:             AT [cmds] S93? [cmds]

  Default:            Read-only

  Range:              0 - 16

  Description:        Returns a value indicating the current local serial
                      port speed.

     Bit        Value                        Meaning

    4 - 0         00000   DTE rate 300 bps

                  00001   DTE rate 300 bps

                  00010   DTE rate 300 bps

                  00011   DTE rate 300 bps

                  00100   DTE rate 600 bps

                  00101   DTE rate 1200 bps

                  00110   DTE rate 2400 bps

                  00111   DTE rate 4800 bps

                  01000   DTE rate 7200 bps

                  01001   DTE rate 9600 bps

                  01010   DTE rate 12,000 bps

                  01011   DTE rate 14,400 bps

                  01100   DTE rate 19,200 bps

                  01101   DTE rate 38,400 bps

                  01110   DTE rate 57,600 bps

                 10000    DTE rate 115,200 bps

                     LOCAL SERIAL PORT SPEED MATCHING

  Type:                  Configuration

  Format:                AT [cmds] %Gn [cmds]

  Description:           Selects whether the speed of the modems port
                         will be changed to match the local serial port,
                         or if the user must do it by hand.

        Command                              Function

          %G0            Speed changed automatically.

          %G1            User must change speed with %B command.

                         MANUAL DIALING DTR CHANGE

  Type:                  Configuration

  Format:                AT [cmds] :Dn [cmds]

  Description:           Selects whether the modem will attempt to
                         connect to a manually dialed call when DTR goes
                         high.

        Command                              Function

          :D0            Modem will not attempt to connect on high DTR.

          :D1            Modem will attempt to connect on high DTR.

                           RECEIVED SIGNAL LEVEL

  Type:          Register

  Format:        AT [cmds] 65? [cmds]

  Default:       Read-only

  Range:         0 - 43

  Unit:          -1 dBm

  Description:   Displays the current received signal level.

                           REMOTE CONFIGURATION

  Type:              Configuration

  Format:            AT [cmds] *En [cmds]

  Description:       Selects whether the modem will accept requests for
                     remote configuration.

      Command                              Function

        *E0          Remote configuration disabled.

        *E1          Remote configuration enabled.

                      REMOTE CONFIGURATION CHARACTER

  Type:                  Register

  Format:                AT [cmds] S34=n [cmds]

  Default:               42

  Range:                 0 - 126

  Unit:                  1 ASCII character

  Description:           Defines the character that, when sent four times
                         within the guard time set by S12, will notify
                         the remote modem that a remote configuration
                         session has been requested.

                         REMOTE CONFIGURATION EXIT

  Type:                 Immediate

  Format:               AT [cmds] *X [cmds]

  Description:          Exits the remote configuration session and
                        discards the changes that have been made.

                         REMOTE CONFIGURATION SAVE

  Type:            Immediate

  Format:          AT [cmds] *U [cmds]

  Description:     Saves the changes that have been made to the remote
                   configuration.

                               RESULT CODES

  Type:          Configuration

  Format:        AT [cmds] Qn [cmds]

  Description:   Enables modem to send result codes to the DTE.

    Command                              Function

       Q0        Result codes enabled.

       Q1        Result codes disabled.

       Q2        Result codes disabled in answer mode.

                                RING DELAY

  Type:          Register

  Format:        AT [cmds] S99=n [cmds]

  Default:       10 - 255

  Range:         50

  Unit:          .1 second

  Description:   Sets the maximum delay between incoming ring signals.

                             RTS TO CTS DELAY

  Type:                  Register

  Format:                AT [cmds] S39=n [cmds]

  Default:               3

  Range:                 0 - 255

  Unit:                  10 mS

  Description:           In half-duplex mode, sets the amount of time
                         that must elapse after an RTS state change
                         before CTS is set to follow.

                          SECURITY - ACCESS MODE

  Type:                  Configuration

  Format:                AT [cmds] $Sxxxxx [cmds]

  Description:           Sets the access mode for configuration according
                         to the options listed below.

        Option                               Meaning

           A             All commands that do not change the modem's
                         memory are accessible.

           W             Commands that write to the modem's memory are
                         accessible.

           I             Incoming calls may be accepted. If this option
                         is not specified, the RING response code is not
                         sent.

           O             The modem may dial out.

           P             The password list may be displayed or edited.

                       SECURITY - CALLBACK PASSWORD

  Type:                         Configuration

  Format:                AT [cmds] $Pn;yyyy

                         AT [cmds] $Pn;bb;xxxx;<#>

  Description:           Sets the information for the callback password
                         at location n. For the first form of this
                         command, yyyy indicates the dialing prefix that
                         will be used to dial the number associated with
                         this entry (see second form). xxxx indicates the
                         password for this callback entry. The bb sets
                         the options for this entry according to the
                         bitmap explained below.

        Bit           Value                     Function

         0                  0   Entry inactive.

                           1    Entry active.

       2, 1                00   Password required for login.

                           01   Password and phone number required for
                                login.
                           10
                                Prompt for password; call user back at
                          11    stored number.

                                Prompt for password and phone number;
                                call user back at entered number.

         3                 0    Not used.

       5, 4                00   User may not perform remote
                                configuration.
                           01
                                User may perform read-only remote
                          10    configuration.

                                User may perform full access remote
                                configuration.

                       SECURITY - DISPLAY PASSWORDS

  Type:          Immediate

  Format:        AT [cmds] $R [cmds]

  Description:   Displays the callback password table.

                         SECURITY - MAIN PASSWORD

  Type:                  Configuration

  Format:                AT [cmds] $Y [cmds]

  Description:           Changes the main security password. The user
                         will be prompted for the old and new passwords.
                         Passwords must be between four and eight
                         characters, case insensitive.

                       SECURITY - PASSWORD WAIT TIME

  Type:               Register

  Format:             AT [cmds] S42=n [cmds]

  Default:            30

  Range:              20 - 120

  Unit:               1 second

  Description:        Sets the amount of time that the modem will wait
                      for a password to be entered.

                         SPEAKER ENABLED FOR RING

  Type:                 Register

  Format:               AT [cmds] S54=n [cmds]

  Description:          Selects whether the modem will emit a ringing
                        sound when an incoming call is detected.

        Command                             Function

         S54=0          Modem will not emit ringing sound.

         S54=1          Modem will emit ringing sound.

               STORE ACTIVE PROFILE WITH EXTENDED REGISTERS

  Type:                  Configuration

  Format:                AT [cmds] *Wn [cmds]

  Description:           Writes the command settings with extended
                         S-registers for the active profile into the
                         non-volatile RAM.

        Command                              Function

          *W0            Write the active profile to stored profile 0.

          *W1            Write the active profile to stored profile 1.

                          STORE TELEPHONE NUMBER

  Type:           Configuration

  Format:         AT [cmds] \Pn<#>

  Description:    Stores the telephone number indicated at memory
                  location n.

                                 V.8 MODE

  Type:            Configuration

  Format:          AT [cmds] %Mn [cmds]

  Description:     Selects whether the modem will use V.8 for bit rate
                   adaptation.

     Command                             Function

       %M0         V.8 adaptation enabled.

       %M1         V.8 adaptation disabled.

                              V.34 BAUD RATES

  Type:            Register

  Format:          AT [cmds] S63=n [cmds]

  Default:         0

  Range:           0 - 61

  Description:     Selects which baud rates may be used in V.34 mode.

   Bit    Value                           Function

    0          0   2400 baud rate enabled.

              1    2400 baud rate disabled.

    1         0    Not used.

    2          0   2800 baud rate enabled.

              1    2800 baud rate disabled.

    3          0   3000 baud rate enabled.

              1    3000 baud rate disabled.

    4          0   3200 baud rate enabled.

              1    3200 baud rate disabled.

    5          0   3429 baud rate enabled.

              1    3429 baud rate disabled.

                         V.34 BAUD RATE - CURRENT

  Type:                Register (read-only)

  Format:              AT [cmds] S84? [cmds]

  Description:         Displays a number which indicates the baud rate of
                       the current V.34 connection.

        Value                               Meaning

          0            Current connection is 2400 baud.

          2            Current connection is 2800 baud.

          3            Current connection is 3000 baud.

          4            Current connection is 3200 baud.

          5            Current connection is 3429 baud.

                              V.100 FALLBACK

  Type:            Configuration

  Format:          AT [cmds] %Ln [cmds]

  Description:     Selects whether the modem will use V.100 for fallback
                   operations.

     Command                              Function

       %L0         Non-V.100 fallback enabled.

       %L1         V.100 fallback enabled.

       %L2         Fallback disabled.

       %L3         V.100 fallback enabled.

                             VOICE DATA FORMAT

  Type:          Configuration

  Format:        AT [cmds] S229=n [cmds]

  Description:   Selects the format of voice data the modem will use.

    Command                              Function

     S229=0      Modem will use new voice format.

     S229=1      Modem will use old voice format.

