Lucent Technologies 7400B manual AT Command Subset Contd, Connect

CHAPTER 3: FIRST TIME USERS	DEFINITY Communications System
	7400B Data Module
Page 3-4	User’s Guide

AT Command	Description
+++	The escape character sequence. This is one of the two
	commands that does not require the AT prefix. Once
	you have connected to the remote device, your data
	module assumes the on-line mode of operation. If you
	need to return to the command mode, leave the keyboard
	idle for at least one second, and then type +++ without
	pressing [ Enter ]. Within a few seconds, the data module
	will respond with OK, signifying that it has entered the
	command mode and is waiting for you to type a
	command.
	Whether OK is returned or not depends on the setting of
	certain parameters. If the factory-default settings are in
	effect, OK should be returned.
O	The return to On-line command. After using the +++
	escape sequence to enter command mode, you can type
	ato and press [ Enter ] to return to on-line mode.
	Note: This command will not work if you have
	disconnected the data call.
H	The hang up or disconnect command. After using the
	+++ escape sequence to enter command mode, you can
	type ath and press [ Enter ] to disconnect the data call.
&F	The return to Factory-default settings command. If an
	experimental change of your data module settings
	produces unexpected results — and you are not sure how
	to get out of the fix — type AT&F and press [ Enter ]. This
	will return all configuration parameters back to the
	factory-default settings.

TABLE 3-2 AT Command Subset (Contd.)

SAMPLE COMMAND LINES This section presents a few sample AT command lines with explanations of the results they will produce.

EXAMPLE 1: Dialing a number.

at d 5551212 [ Enter ]

CONNECT 2400