3Com 3C882 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	Answer incoming circuit-switched	Answers an incoming data call.
	ISDN modem call (AT A)
%C	Compression	When enabled, compresses data to
		improve data transfer times using the
		Stac compression method. The following
		check modes are negotiable— None,
		One Byte Sequence Number, and
		Extended. Extended is the preferred
		choice.
		%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
		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.
DD	(ATDD5551234)	Dials an outgoing switched 56 Kbps
		permissive connection.
(continued)