At Command Summary - Lucent Technologies Host-Based Controller Modem AT Data Addendum

Host-Based Controller Modem
AT Command Set
1998

AT Command Summary

The following tables summarize the commands implemented by the modem. Commands may be executed when
the modem is in COMMAND mode. COMMAND mode is entered upon under one of the following conditions:
After power up
At the termination of a connection
After the execution of a command other than dial or answer commands (ATO or AT&T)
Upon the receipt of the ESCAPE SEQUENCE (three consecutive characters matching the contents of
S register 2) while on-line mode
Upon the on-to-off transition of DTR if &D1, &D2, or &D3 has been set
Table 1. AT Command Set Summary
Command
A/ Repeat last command
A Answer command
B Communication standard setting
C Carrier control
D Dial command
E Echo command
F On-line data character echo command
H Hook control
I Request ID information
L Monitor speaker volume
M Monitor speaker mode
N Modulation handshake
O Return to on-line data mode
P Select pulse dialing
Q Result code control
T Select tone dialing
V DCE response format
W Result code option
X Result code selection and call progress
monitoring
Y Long-space disconnect
Z Reset and recall stored profile
&B V.32 auto retrain
&C Data carrier detect (DCD) control
&D Data terminal ready (DTR)
&F Local factory settings
&G V.22bis guard tone control
2
Description
Version 1.0
Command
&J Auxiliary relay options
&K Local flow control selection
&M Asynchronous communications mode
&Q Asynchronous communications mode
&S Data set ready (DSR) option
&T Self-test commands
&V View the active configuration
&W Store current configuration
&Y Select stored profile for hard reset
&Z Store telephone number
\A MNP block size
\B Send break
\G Modem port flow control
\J Adjust bits/s rate control
\K Set break control
\N Error control mode selection
\Q Local flow control selection
\R Ring indicator off after answer
\T Inactivity timer
\V Protocol result code
\X XON/XOFF pass through
%B View numbers in blacklist
%C Data compression control
%E Automatic rate change
-C Data calling tone
-V90 Enable/disable V.90 settings
Lucent Technologies Inc.
Data Addendum
June 15,
Description