Hayes Sportster Modem Command Reference

Ever found yourself needing to dig up archaic documentation on Hayes modem commands?

You might, and if you do here is a reference.  It’s not often in your life you’ll need to dial up to another machine, but in those rare cases it’s nice to be able to diagnose the modem issue when it occurs.

HAYES MODEM REFERENCE


HAYES(DEV)                      Devices                         HAYES(DEV)

NAME
    hayes - The hayes modems

DESCRIPTION

    MISCELLANEOUS
    -------------
    a/          - redo last command
    +++         - return to modem cmd mode from live connection

-------------------------------
--- DIALING
-------------------------------

    DIAL COMMAND
    ------------
    atdt[tele#]
    ats11=75    - speed of tone dialing (in miliseconds. minimum 50)

    AUTO-DIAL PHONE NUMBERS
    -----------------------
    at&z0[tele#]        -stores a tele# in memory #0
    at&z1[tele#]        -stores a tele# in memory #1, etc
    atd\0               - dial tele# in memory #0


    SHOW ALL SETTINGS
    -----------------
    at&v        - show all hayes command settings

-------------------------------
--- ENTER/EXIT CONNECTION STATE
-------------------------------

    ANSWER/ORIGINATE MODES
    ----------------------
    ata         - manual answer incoming call
    atd         - originate connection. Assumes number already 
                      dialed, remote has picked up
    ONLINE RETURN
    -------------
    ato         - go back online from +++
    ato1        - return to online state and retrain baud sync

    HANGUP
    ------
    ath0        - hang up if modem off hook (esp. after a +++)
    ath1        - pick up, but do nothing

    RESET
    -----
    atz         - reset modem to config profile 0
    at&f        - return all settings to factory settings
    at&w        - save current settings in non-volatile mem (?not sure)

    BREAK
    -----
    at\b        - send break
    at\b3       - send a 300ms break (number is x100ms)

-------------------------------
--- SPEAKER
-------------------------------
    LOUDNESS (SPEAKER)
    ------------------
    atl1        - low speaker volume
--> atl2        - medium speaker volume
    atl3        - loud speaker volume

    MONITOR (SPEAKER)
    -----------------
    atm         - speaker off
--> atm1        - speaker on until carrier detected
    atm2        - speaker always on
    atm3        - spkr on until carrier detected except during dialing

-------------------------------
--- MODEM RESPONSES
-------------------------------
    QUIET
    -----
--> atq0        - quiet off (enable messages)
    atq1        - quiet on  (disable messages)

    VERBAL
    ------
    atv0        - verbal off (numeric messages)
--> atv1        - verbal on (word messages)

    CONNECT CODES
    -------------
    atx[01234]  - various levels of word messages (default atx4)

    ECHO
    ----
    ate0        - no local echo
--> ate1        - local echo

-------------------------------
--- HARDWARE LINES
-------------------------------

    CTS/RTS
    -------
    at&r0       - ignore RTS in command mode, CTS follows RTS in data mode
    at&r1       - force CTS active

    DCD ASSERT
    ----------
    at&c0       - force DCD high always
    at&c1       - modem asserts DCD when carrier detected

    DSR ASSERT
    ----------
    at&s0       - force DSR high always
    at&s1       - modem asserts DSR (when connection established?)

    DTR
    ---
    at&d0       - ignores DTR line from computer
    at&d1       - goto AT command state on DTR on->off change, (no hangup)
    at&d2       - modem resets itself on DTR on->off change

-------------------------------
--- FLOW CONTROL
-------------------------------

    XON/XOFF FLOW CONTROL
    ---------------------
    at&k0       - disable local flow control
    at&k1       - ?
    at&k2       - ?
    at&k3       - RTS/CTS bi-directional hardware flow control
    at&k4       - XON/XOFF bidirectional software flow control
    at&k5       - uni-directional XON/XOFF flow control

-------------------------------
--- AUTO ANSWER
-------------------------------

    ats0=0      - no auto answer
    ats0=1      - auto-answer on first ring

-------------------------------
--- CARRIER
-------------------------------

    ats7=30     - time to wait for carrier detect before giving up
    ats9=6      - recognize carrier by .6 seconds of carrier tone
    ats10=10    - hangup after 1 second without carrier tone

    S REGISTERS
    -----------
    ats0=0      - no auto answer
    ats0=1      - auto-answer on first ring

    ats7=30     - time to wait for carrier detect before giving up

    ats9=6      - recognize carrier by .6 seconds of carrier tone

    ats10=10    - hangup after 1 second without carrier tone

    ats11=75    - speed of tone dialing (in miliseconds. minimum 50)

    DIAL MODIFIERS
    --------------
    ,           - pause for 2 seconds (value of S7 register)
    ;           - return to command state after dialing
    !           - flash the hook for 1/2 second
    R           - reverse to 'answer' mode after dial (@ end of tele#)
    W           - wait up to 30 secs for 1 sec continuous dial tone
    @           - modem waits 30 secs for one or more ringbacks


RECOMMENDED SETTINGS

    FOR UNIX DIALUP MODEM WITH UUGETTY
    ----------------------------------
    at&f                - return to factory settings
    ats0=1              - auto answer on first ring
    ats2=127            - disable +++ escape (allows binary file xmission)
    atl3                - loud spkr volume
    atm1                - spkr on until carrier detect
    ate0                - echo off
    atq1                - no messages
    at&c1               - DCD active on carrier detect, inactive on hangup
    at&d2               - modem resets when DTR dropped
    at&s1               - DSR active (when??)
    at&k0               - disable XON/XOFF flow control
    at&r0               - ignore RTS in cmd mode, CTS follows RTS in data mode
    at&w                - save these settings

    FOR UNIX DIALOUT
    ----------------
    at&f
    ats0=1              - auto answer on first ring
    ats2=127            - disable +++ escape (allows binary file xmission)
    atl3                - loud spkr volume
    atm1                - spkr on until carrier detect
    ate1                - echo on
    atq0v1              - disable quiet/enable verbose messages
    at&c1               - DCD active on carrier detect, inactive on hangup
    at&s1               - DSR active (when??)
    at&d2               - modem resets when DTR dropped
    at&k0               - disable XON/XOFF flow control
    at&r0               - ignore RTS in cmd mode, CTS follows RTS in data mode
    at&w                - save these settings

SEE ALSO
    www.hayes.com - I think they have all models of modem settings 
    available online.

ORIGIN
    Gregory Ercolano, Los Feliz California 08/28/93
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