Motorola and V.32bis, V.34-SDC, 326X V.34 manual Reinitialize Memory, Guard Tone, Display Modem ID

Configuration Quick-Reference

Table A-1.

AT Commands, Cross-Referenced to Front Panel Options (Continued)

AT	Parameter &
Command	Option	Description
AT&D2	=Discon	The modem hangs up and enters command mode when an on-to-off DTR transition is detected,
		while the modem is in data, test, or escape mode. If DTR is low, the modem does not auto
		answer.
AT&D3	=Reset	The modem hangs up (if connected) and loads the specified option set when an on-to-off DTR
		transition occurs. If DTR is low, the modem auto answers.
AT&D4	=Tail	This setting is similar to 108.1 except that the modem auto answers an incoming call even if
		DTR is off. When DTR transitions from off to on, the modem connects to the telephone line
		and dials (if the Default Dial option is enabled).
AT&D5	=108.1	The DTR signal emulates the function of the Talk/Data ( at the Home position) key on the
		modem’s front panel. An off-to-on DTR transition instructs the modem to connect to the
		telephone line. If the modem detects an incoming ring, it answers the call. If the modem does
		not detect an incoming call, the modem dials the number specified by the Default Dial option.
		An on-to-off DTR transition disconnects the modem from the telephone line.
AT&D6	=108.2	When the modem is disconnected from the telephone line, and DTR is turned on by the DTE,
		the modem responds to all AT commands. When the DTE turns DTR off, the modem does not
		respond to dialing and answering AT commands, but responds to all other AT commands. The
		DTR signal must remain on throughout the connection. An on-to-off DTR transition
		disconnects the modem from the telephone line. If DTE is low, the modem does not auto
		answer.
AT&D7	=108.2/Bsy	When the modem is disconnected from the telephone line, and the DTE asserts DTR, the
		modem responds to all AT commands. The DTR signal must remain asserted throughout the
		connection.
		When the DTE de-asserts DTR:

		• The modem disconnects from the telephone line. If DTR is de-asserted, the
		modem activates Busyout status.
		• The modem does not respond to dialing and answering commands, but responds
		to all other commands.
		Reinitialize Memory
AT&F	Reinit Memory?	Resets the modem to factory default settings. The four factory default option sets are restored
		to their original settings, and all stored telephone numbers are deleted.
		Enter: AT&F<CR>. The modem displays 326x Initial and the terminal displays OK.
		The factory-programmed option sets are now in place.
	Guard Tone	Guard Tone
		This command determines what type of guard tone the modem uses in V.22bis operation. The
		proper guard tone (AT&G) option setting is required by your PTT.
AT&G0	=Off	The modem does not use a guard tone.
AT&G1	=550	The modem uses a guard tone of 550 Hz.
AT&G2	=1800	The modem uses a guard tone of 1800 Hz.
		Display Modem ID
AT&I0	Modem ID# 1	Software part number.
AT&I1	Modem ID# 1	Factory product code.
AT&I2	Modem ID# 1	Country code

Gray shading indicates country-specific options. See Appendix C for your country’s options.

A-10 Configuration Quick Reference