Multi-Tech Systems BA-Series 4.2 Summary of AT Commands

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Chapter 4 - Command Mode
Dial (D or A) command,
or incoming phone call
Carrier detected
HANG
UP
ON-LINE
MODE
WAIT FOR
CARRIER
COMMAND
MODE
AT0 Command
+++AT
No carrier
detected
Carrier lost
Figure 41. Functional Modes
4.2 Summary of AT Commands
A wide variety of autodial operations and modem options can be controlled when the modem is in
Command Mode. Remember, nearly all commands begin with AT .
These commands are organized into several functional groups. An alphabetical summary of
commands is provided in Appendix D.
HOW TO COMMANDS
DIAL D Dial
A: or : Continuous Redial
$D DTR Dialing
$VD Voice/Data Dialing
N Dial a Stored Number
MODIFY DIALING P/T Pulse/Tone Dialing
PROCEDURES &P Set Pulse Dial Ratios
, Automatic Pauses in dialing
Y Long Space Disconnect
W Wait for New Dial Tone
;Return to Command Mode After Dial
Command
R Reverse Mode of Operation
! Flash On Hook
$ AT&T "Calling Card" Tones
@ Quiet Answer
MEMORIZE PHONE
NUMBERS D...N Store Phone Numbers
NN Number Linking
L List Numbers Stored in Memory