3Com ISDN Modem manual AT Commands REGISTERS, and Result Codes, AT Command Set

AT COMMANDS,

B S REGISTERS, AND RESULT

CODES

The 3C882 ISDN modem AT commands are summarized in Table B-1, S registers in Table B-2, and result codes in Table B-3.

AT Command Set

Table B-1 summarizes the AT command set for the 3C882 ISDN modem.

Table B-1 AT Command Set Summary

Command	Function (Example)	Description
A	Answers an incoming	Answers an incoming data call.
	circuit-switched ISDN modem call
	(AT A)

$B* Set baud rate (AT $B57600)

0 — Autobaud (default). Other settings are 1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200, and 230400. Autobaud does not exceed 115200. For 230400 you must send the command

AT $B230400 to the ISDN modem.

%C	Compression	When enabled, compresses data to
		improve data transfer times using the
		hi/fn compression method.
		%C0 disables compression.
		%C2 enables compression.
&C	Serial port CD control (AT &C2)	&C0 forces CD to remain on at all times.
		&C1 forces CD to follow the state of the
		carrier from the remote system. CD turns
		on after CONNECT message is sent to
		host (default).
		&C2 forces CD to remain on except
		temporarily after disconnect.
D	(ATD5551234)	Dials an outgoing 56/64 Kbps
		circuit-switched digital connection.