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