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When XON/XOFF pacing is active, the local modem has two options regarding the XON and XOFF
characters. It can respond to and discard the characters from the computer, or it can respond to the
characters and pass them through the data communications link to the remote modem, thereby pacing the
remote modem as well.
&X0 causes the modem to respond to and discard the XON and XOFF characters. This is the default.
&Jn
Auxiliary Relay Control
n = 0
Default: &J0
The &J0 command causes the auxiliary relay to remain open. It is never closed. This is the default, and the
only supported command format.
\Gn
Modem Port Flow Control
n = 0
Default: \G0
This command returns an OK for backward compatibility with some software.
\Jn
Data Buffer Control
n = 0
Default: \J0
This command enables data buffer control. Serial port speed is independent of connect speed.
\J0 enables data buffer control. This is the default, and the only supported command format.
\Kn
Set Break Control
n = 5
Default: \K5
This command determines how the modem processes a break signal received from the local DTE during
an online connection.
\K5 causes the modem to send the break to the remote modem in sequence with transmitted data, non-
destructive, non-expedited.
+ES=6 Enable Synchronous Buffered Mode
Default: none
This command allows an H.324 video application direct access to the synchronous data channel. On
underflow, the modem sends HDLC flag idle (0x7E) to the remote modem. This special error correction
mode is overridden by any of the following commands: &F, &M, &Q, and \N. +ES=? shows the only
allowed value.
Escape Sequences
Escape sequences are also known as escape codes. They are used to cause the modem to enter command
mode from online mode without disconnecting the call.
CommPlete Communications Server
3 AT Commands
29
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