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    BASIC MODEM COMMANDS

        Command   Description
        ________   _____________________________________________________
        A          Answer phone.
        A/         Repeat the last command line.
        AT         Attention code.  Must precede all commands except A/.
        B          Set the 300 bps/1200 bps protocol.
           B,B0    CCITT V.21/V.22 protocol.
           B1*     Bell 103/212A protocol.
        D          Dial phone, using following modifiers:
         String    Phone number.

           P       Pulse.
           R       Reverse.
           S=n     Dial stored phone number n, where n=0-3.
           T       Tone.
           W       Wait for dial tone.
           @       Wait for quiet.
           ,       Pause.
           ;       Resume command mode after dialing.
           !       Hook flash.
        E          Local echo control.
           E, E0   No echo.
           E1      Echo.
        H          Switch hook control.
           H, H0   On hook (hang up phone).
           H1      Off hook (pick up phone).
        I          Return product code and status.
           I, I0   Return product ID.
           I1      Compute ROM checksum and return value.
           I2      Verify ROM checksum and return OK or ERROR.
           I3      Report ROM part number and software revision number.
           I4      Report modem capabilities in form meant for software
                   applications.
        L          Speaker volume control.
           L, L0   Very low volume.
           L1      Low volume.
           L2      Medium volume.
           L3      High volume.
        M          Speaker on or off.
           M, M0   Speaker always off.
           M1      Speaker on until carrier detected.
           M2      Speaker always on.
           M3      Speaker off when carrier detected and during dialing.
           M4      Like M1, except speaker also on during retraining.
           M5      Like M3, except speaker also on during retraining.
        O          Return to on-line mode.  3-7
           O, O0   Return to on-line mode.
           O1      Return to on-line mode and initialize retrain sequence.
        Q          Enable or disable result codes.
           Q, Q0   Display result codes.
           Q1      Don't display result codes.

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        S          Read and write S-registers.
           Sn      Select S-register n as current register, n=0-27.
           Sn?     Read S-register n, n=0-27.
           Sn=v    Set S-register n to value v.
        V          Verbal or numeric result codes.
           V, V0   Numeric result codes.
           V1      Verbal result codes.
        X          Result codes and dialing options.
           X, X0   Basic result codes only.  CONNECT(1) result code on
                   connection.  Doesn't wait for or recognize dial tone
                   and doesn't recognize busy signal.
           X1      Like X0, except all CONNECT result codes can occur.
           X2      Waits for dial tone before dialing, but doesn't
                   recognize busy signal.  All CONNECT result codes can
                   occur.
           X3      Recognizes busy signal, but doesn't wait for dial tone
                   before dialing.  All CONNECT result codes can occur.
           X4      Waits for dial tone before dialing and recognizes busy
                   signal.  All CONNECT result codes can occur.
        Y          Long space disconnect.
           Y, Y0   Long space disconnect disabled.
           Y1      Long space disconnect enabled.
        Z  Zn      Fetch configuration profile n from nonvolatile RAM,
                   n=0,1.

    EXTENDED MODEM COMMANDS

        Command   Description
        ________   _____________________________________________________
        &C         Data carrier detect (DCD) options.
           &C,&C0  DCD always on.
           &C1     DCD on only when modem detects data carrier signal.
        &D         Data terminal ready (DTR) options.
           &D,&D0  In asynchronous mode, modem ignores DTR; in synchronous
                   mode, modem treats &D0 like &D1.
           &D1     Modem switches from on-line to command mode when
                   on-to-off DTR transition occurs.
           &D2     Modem switches from on-line to command mode, hangs up,
                   and disables auto-answer when on-to-off DTR transition
                   occurs.
           &D3     Modem reinitializes when on-to-off DTR transition
                   occurs.
        &F         Fetch factory configuration profile from ROM
        &G         Guard tones.
           &G,&G0  No guard tone.
           &G1     550 Hz guard tone.
           &G2     1800 Hz guard tone.
        &L         Leased or dialup line selection.
           &L, &L0 Dial-up line.
           &L1     Leased line.
           &L2     Leased line autoconnect.
        &M         Synchronous or asynchronous mode.  (Performs same
                   function as &Q command.)
           &M,&M0  Asynchronous.

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           &M1     Asynchronous in command mode; synchronous in on-line
                   mode.
           &M2     When DTR goes on, modem dials number stored using &Z0
                   and switches to synchronous mode.
           &M3     Synchronous when DTR is on; command mode when DTR is
                   off.
        &P         Make-to-break pulse dial ratio.
           &P,&P0  39% make to 61% break (US and Canada).
           &P1     33% make to 67% break (UK and Hong Kong).
        &Q         Synchronous or asynchronous mode.  (Performs same
                   function as &M command.)
           &Q,&Q0  Asynchronous.
           &Q1     Asynchronous in command mode; synchronous in on-line
                   mode.
           &Q2     When DTR goes on, modem dials number stored using
                   &Z0 and switches to synchronous mode.
           &Q3     Synchronous when DTR is on; command mode when DTR is
                   off.
        &R         Request to send (RTS)/Clear to send (CTS) option (only
                   valid in synchronous mode [see &M, &Q, and \Q
                   commands]).
           &R,&R0  CTS tracks RTS when modem is on line.
           &R1     CTS always asserted.
        &S         Data set ready (DSR) options.
           &S,&S0  DSR always on.
           &S1     DSR off in command and test modes.
        &T         Diagnostic test commands.
           &T,&T0  Terminate test in progress.
           &T1     Local analog loopback.
           &T3     Local digital loopback connection.
           &T4     Grant remote digital loopback from remote.
           &T5     Deny remote digital loopback from remote.
           &T6     Remote digital loopback.
           &T7     Remote digital loopback with self-test.
           &T8     Local analog loopback with self-test
        &V         View active and stored configuration profiles and stored
                   phone numbers.
        &W, &Wn    Write active configuration profile n to to nonvolatile
                   RAM, n=0,1.
        &X         Clock source in synchronous mode.
        &X, &X0    Modem generates transmit clock.
           &X1     Local computer (or terminal) generates transmit clock.
           &X2     Modem derives transmit clock from receive signal.
        &Y         Designate the stored profile to use when modem is first
                   turned on.
           &Y,&Y0  Use profile 0.
           &Y1     Use profile 1.
        &Z &Zn=x   Store telephone number string x in location n (n=0-3)
                   in nonvolatile RAM.



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    ERROR CORRECTION/DATA COMPRESSION COMMANDS

        These commands work only on these fax modems and modems:

             SatisFAXtion/400E            2400B MNP/2400EX MNP
             SatisFAXtion/400             9600EX
             SatisFAXtion/200             14.4EX
             SatisFAXtion Classic

        Command   Description
        ________   _____________________________________________________
        \A Maximum MNP block size.  7-3
           \A, A0  64 bytes.
           \A1     128 bytes.
           \A2     192 bytes.
           \A3     256 bytes.
        \B \Bn     Send break of n hundred msec, where n=1-9. Default is
                   n=3.
        \C         Set Auto-reliable buffer.
           \C,\C0  Disabled.
           \C1     Buffer up to 200 data characters.  If a reliable
                   character is received within three seconds, establish a
                   reliable connection.  If 200 normal characters are
                   received and no reliable character, establish a normal
                   connection.
           \C2     Disable the auto-reliable buffer.  After receiving the
                   escape character defined by %A, establish a normal
                   connection.
        \G         Set modem-to-modem XON/XOFF flow control.
           \G,\G0  Disable XON/XOFF.
           \G1     Enable XON/XOFF.
        \J         Set serial bps rate adjust.
           \J,\J0  Disable serial bps rate adjust.
           \J1     Enable serial bps rate adjust.
        \K \Kn     Break type, where n=0-5.  Default: n=5.
        \N         Asynchronous connection type
           \N0     Normal mode.
           \N1     Diagnostic mode.
           \N2     Forced-MNP mode.
           \N3     Auto-reliable mode.
           \N4     Forced-LAPM (CCITT V.42) mode.
        \O         Initiate MNP reliable connection.
        \Q         Set serial port flow control.
           \Q,\Q0  Disable flow control.
           \Q1     Bidirectional XON/XOFF control.
           \Q2     Unidirectional RTS/CTS control.
           \Q3     Bidirectional RTS/CTS control.
        \T \Tn     Inactivity timer (n=0-90 minutes).  Default: n=0
        \U         Accept MNP reliable connection.
        \V         Display error control and data compression information.
           \V0     Standard CONNECT result codes.
           \V1     CONNECT codes show general error control information.
           \V2     CONNECT codes show full error control and data
                   compression information.

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           \V3     Similar to V0 except that the DTE speed is displayed in
        place
                   of the CONNECT speed. (ie. if the DTE is locked at 38400,
        the
                   modem displays CONNECT 38400 after all successful
        connections)
        \X         XON/XOFF pass through.
           \X,\X0  Don't pass XON/XOFF through to remote modem.
           \X1     Pass XON/XOFF codes through to remote modem.
        \Y         Switch to MNP reliable connection.
        \Z         Switch from MNP to normal connection.

        %An        Set auto-reliable fallback character, where n=0-127
                   (used with \C2).  Default: n=13 (Enter key).
        %C         Enable or disable MNP class 5 data compression.
           %C0     MNP data compression disabled.
           %C1     MNP data compression enabled.
        %E         Auto-retrain.
           %E,%E0  Retrain disabled.
           %E1     Retrain enabled.
           %E2     Modem initially negotiates for speeds up to 9600. After
                   connecting, modem renegotiates for faster speed if line
                   conditions allow. Also uses V.32 retrain technique instead
        of
                   the faster V.32bis technique.
        -J         Detect error control.
           -J,-J0  Disable error control detection phase.
           -J1     Enable error control detection phase.

        "B         DTE bit rate simulation
           "B=0    Match bit rate set up by the host computer. (default
        setting)
           "B=1    Use two times the bit rate setup by the host computer.
           "B=2    Use four times the bit rate set up by the host computer.
           "B=3    Use the fastest rate at which the host computer can send and
        receive data.
        "H         Enable or disable V.42bis data compression.
           "H0     V.42bis data compression disabled.
           "H1     Can send but not receive V.42bis data compression.
           "H2     Can receive but not send V.42bis data compression.
           "H3     Enable bidirectional V.42bis data compression.
        "On        Set maximum V.42bis data block size n (n=6-250).
                   Default:  n=250.
        "S         Handshake timing.
           "S,"S0  Originating modem waits 3 s after receiving 1200- or
                   2400-bps handshake tone; normal timing for V.32/V.32bis
                   modems.
           "S1     Like "S0, except modem waits 1.6 s
           "S2     Like "S0, except fast handshake performed with
                   V.32/V.32bis modems.
           "S3     Like "S1, except fast handshake performed with
                   V.32/V.32bis modems.

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    S REGISTERS

        Reg-  Factory
        ister Setting      Description
        ____  _____________________________________________________________
        S0*   00     Number of rings before modem answers.  Range: 0-255
                     rings.
        S1    00     Ring count.  Range:  0-255 rings.
        S2    43     Escape code character.  Can be any ASCII character
                     from 0-127.
        S3    13     Carriage return character.  Can be any ASCII character
                     from 0-127.
        S4    10     Line feed character.  Can be any ASCII character from
                     0-127.
        S5    08     Backspace character. Can be any ASCII character from
                     0-32 or 127.
        S6    02     Time to wait before blind dialing.  Range: 0-255
                     seconds.
        S7    60     Time to wait for carrier after dial.  Range:  1-60
                     seconds.
        S8    02     Time to pause for each comma.  Range:  0-255 seconds.
        S9    06     Carrier detect response time (in 1/10ths of a second).
                     Range:  1-255.
        S10   14     Delay between lost carrier and hangup (in 1/10ths of
                     a second).  Range:  1-255.
        S11*  70     Dialing speed (in 1/1000ths of a second).  Range:
                     50-255.
        S12   50     Escape code guard (in 1/50ths of a second).  Range:
                     0-255.
        S14*  138    Bit-mapped options.
        S16   00     Modem test options.
        S18*  00     Maximum time for diagnostic tests.  Range:  0-255
                     seconds.
        S21*  48     Bit-mapped options.
        S22*  118    Bit-mapped options.
        S23*  11     Bit-mapped options.
        S25*  05     Time DTR must remain off (in 1/100ths of a second).
                     Range:  0-255.
        S26*  01     RTS-to-CTS delay (in 1/100ths of a second).
                     Range:  0-255.
        S27*  64     Bit-mapped options.
        S28   08     Time (in seconds) allowed to attempt an MNP reliable
                     connection.  Range: 0-255
        S29   255    Internal buffer size (in words).  Range:0-255; 255
                     yields 1K byte buffer.
        S30   00     Number of retrains since last power up. Range: 0-255.
        S31   00     Controls maximum connect speed.
                     00    Speed of last AT command
                     01    Reserved
                     02    Reserved
                     03    300bps
                     04    Reserved
                     05    1200bps
                     06    2400bps

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                     07    4800bps
                     08    7200bps
                     09    9600bps
                     10    12000bps
                     11    14400bps

        *    The contents of these registers are stored in nonvolatile RAM.











































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