Common Modem Commands

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