CXR V.34bis series, Operation And Installation Manual, Page: 89 / 150

AT and V.25bis Command Sets
V.34bis Series Standalone & Rackmount Modems
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Table 6.2: Details
AT Command Descriptions
The expanded
The followi
AT command set offers the user a wide range of capabilities.
ng is a list and description of all "AT" commands. A summary of
T commands and settings is displayed by sending AT&S to the
modem. T command is always followed by the <CR>.
the A
he AT
AT Attention Code
FORMAT: AT [other commands]
Begin eac mmand.
nd must begin each command line, any
) must be preceded by this
h command line with AT co
Note: Since the AT comma
command issued singly (except A/
command.
A Answer
FORMAT: ATA
Causes t em to go off-hook immediately, answer an incoming
phone gnal.
: Dial (D)
c ta communication, this
er.
he mod
tele call, and wait for a carrier si
Note This command can be used in conjunction with the
ommand to switch from voice to da
command should not be used for auto answ
Bn BELL/CCITT Protocol Compatibility
FORMAT: ATBn
n = 0
- CCITT protocol (V.22 mode 2 or V.22bis) is selected.
12A or 201) is selected.
n = 1
- (Default) Bell protocol (103, 2
Note: Data rate is determined by the communication data rate at which
last AT command was issued.
Cn Transmit Carrier Control
FORMAT: ATCn
Turns transmit carrier off for test purposes.
n = 0
- Carrier transmit OFF
n = 1
- (Default) Carrier transmit ON
Dn Dial Command
FORMAT: ATD%n