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AT Command Set and S-Registers
Table 4-1. AT Command Reference (8 of 18)
AT
Command Description
\C n
Set Auto-reliable Buffer
In V.42 auto-reliable mode (set by the \N3 command), this
command is used to determine the fallback method and may
enable data buffering. The settings for this command are used
by the modem during the V.42 detection phase.
Online changes to this option do not take effect until a
disconnect occurs.
\C0
\C1
\C2
\G n
Set Modem Port Flow Control
In normal mode (set by the \N0 command or after fallback),
this command enables modem-to-modem flow control using
XOFF (13 hex) and XON (11 hex) characters to stop and start
transmission between modems, respectively.
For more information on flow control, also refer to the \Q and
\X commands.
\G0
\G1
No data buffering is performed.
Data is buffered for four seconds or until 200
characters have been received, then switches to
Reliable mode. If the buffer fills up, data passes to the
serial port.
No data buffering is performed. The modem switches
to normal mode upon receipt of the auto-reliable
fallback character (set by the %A command) and
passes it to the serial port. This feature is used to allow
non-V.42 modems to connect immediately to a V.42
modem without data loss.
Disables modem-to-modem flow control.
Sets flow control to XON/XOFF.
Issue 1 November 1994
4-9
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