AT Commands F-5
AT Commands
\B
n Transmit Break
Where n is an integer between 1 and 9 indicating the time (in increments of 100
milliseconds) to send the Break. (Default is 300 milliseconds). During a reliable link
the Break always equals 300 milliseconds
Transmits a Break to the remote system from command state. To return to connect
state, type ATO. (See also \K.)
%C
nCompression Control
%C0
Disables data compression.
%C1
Enables MNP Class 5 Data Compression only.
%C2
Enables V.42bis compression only.
%C3
Enables both V.42bis and MNP Class 5 compressions. The modem matches the
capability of the remote modem.
Determines whether the modem attempts to use data compression during reliable
connections. We recommend leaving this command at its default setting (%C3). This
allows the modem to establish a reliable connection using either MNP Class 5 Data
Compression or V.42bis compression, depending on the capability of the remote
modem. Setting this command to 1 or 2 restricts the modem to using either MNP Class
5 Data Compression or V.42bis compression, respectively, otherwise a non-
compression connection results.
If the remote modem does not support data compression or has data compression
disabled, the modem can establish a connection without data compression, regardless
of the modem’s %C setting.
NOTES
•
We recommend disabling bps rate adjust (\J0) for the most throughput. When bps
rate adjust (\J1) is set and the modem establishes a reliable connection at speeds
between 4800 and 14400 bps, the serial port adjusts to 9600 bps. If the connection
speed is above 14400 bps, the serial port adjusts to 19200 bps.
•
Remote access is available during normal connections or during MNP reliable
connections when data compression is disabled (%C0).
