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                       Hayes 1200-SmartModem Command Set
                       =================================

Cmd     Settings     Meaning
---     --------     -------

ATA                  Enter answer mode

A/                   Execute last command

ATC     ATC0	     Transmitter off
           1         Transmitter on * 


ATD        T         Tone dial
           P         Pulse dial
           R         Reverse mode (ans/orig)
           ,         Pause
           ;         Return to command state

ATE     ATE0         Commands not echoed
           1         Commands echoed *

ATF     ATF0         Half-duplex
           1         Full-duplex *

ATH     ATH0         Hang up (on-hook)
           1         Pickup line (off-hook)
           2         Special off hook

ATI     ATI0         Show product code
           1         Show checksum

ATM     ATM0         Speaker always off
           1         Speaker on except while connected *
           2         Speaker always on

ATO     ATO0         Return online

ATP     ATP          Pulse dial

ATQ     ATQ0         * Result codes are sent
           1         Quiet mode

ATR     ATR          Reverse modem; call "originate only" modem

ATS     ATS0..16=0..255 Set register to value 0-255.
					 (See next page for register meanings.)
ATT     ATT          Touch-tone dial

ATV     ATV0         Numeric response codes
           1         Verbose response codes *

ATX     ATX0         SM-300 compatibility mode
           1         Extended 'connect' msgs

ATZ                  Reset configuration


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Cmd     Settings     Meaning
---     --------     -------
Register   0         0-255   rings    00     Ring to answer on
           1         0-255   rings           Ring count
           2         0-127   ascii    43     Escape code char
           3         0-127   ascii    13     Carriage return char
           4         0-127   ascii    10     Line feed
           5         0-127   ascii    08     Backspace char
           6         0-255   seconds  02     Wait for dialtone
           7         1-30    seconds  30     Wait for carrier
           8         0-255   seconds  02     Pause time comma
           9         1-255   .1 sec   06     Carr detect response
          10         1-255   .1 sec   14     Lost carrier hangup
          11
          12         0-255   .02 sec  50     Escape guard time
          13
          14                 none            Options register
          15
          16                 none     00     Modem test options
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Result     0         OK               Acknowledge execution
Codes      1         CONNECT          0-300 bps connection
           2         RING             Ring detected
           3         NO CARRIER       No connect or lost
           4         ERROR            Error
           5         CONNECT 1200     1200 bps connection


(Originally SM2400.TXT- author unknown....  SM1200.TXT created from
 SM2400.TXT by Fowler Brown.  Call ComOne 415-370-0411 with corrections.)                                                                      