Paradyne 3800PLUS manual 8 of 3800Plus AT Commands, Description, Front Panel Branch, RTS Action

COMSPHERE 3800Plus Modems

Table 13-1

(8 of 11)

3800Plus AT Commands

AT Command			Description	Front Panel Branch
&Mn	Async/Sync Mode and DTE Dialer Type			Configure\Edit\
and &Qn	&M0, &Q0 Modem operates in Asynchronous mode and uses			DTE Dialer
			AT Command protocol.
	&M1, &Q1		Modem operates in Synchronous mode and uses
			AT Command protocol.
	&M2, &Q2		Modem operates in Synchronous mode and dials telephone
			number stored in directory location 1 when DTR signal turns
			Off and then ON.
	&M3, &Q3		Modem operates in Synchronous mode and uses
			AT Command protocol.
	&M231, &Q231 Modem operates in Asynchronous mode; the DTE Dialer
			Type is disabled.
	&M232, &Q232 Modem operates in Asynchronous mode; V.25bis Async
			dialing is enabled.
	&M233, &Q233 Modem operates in Synchronous mode; V.25bis Bisync
			dialing is enabled.
	&M234, &Q234 Modem operates in Synchronous mode; V.25bis HDLC
			dialing is enabled.
	&M235, &Q235 Modem operates in Asynchronous mode; AT&T
			Exclusive dialing is enabled.
	&M236, &Q236 Modem operates in Synchronous mode; the DTE Dialer
			Type is disabled.
	The &M2, &Q2, &M231, &Q231, &M236, and &Q236 commands disable
	the use of AT commands and force the modem into Dumb mode. The only
	way to gain control of the modem is the front panel.
&Rn	RTS Action			Configure\Edit\
	&R0	Standard RS232. RTS must be ON for the DTE to transmit to the		DTE Interface
		modem.
	&R1	Ignores RTS. Modem acts as if RTS is always ON.
	&R2	Simulated Control Carrier. RTS input controls the remote modem's
		LSD signal.
	&R3	Control Carrier. The DTE's RTS signal controls the modem's carrier
		signal.
&Sn	DSR Control			Configure\Edit\
	&S0 Forced On. DSR output is constantly ON.			DTE Interface
	&S1	Standard RS232. The modem controls DSR to the DTE, turning ON
		DSR when handshaking begins, and Off upon disconnect.
	&S2	Wink When Disconnect. DSR is normally ON, but is forced Off
		momentarily during a disconnect.
	&S3	Follows DTR. When the modem receives DTR from the DTE, it
		sends DSR to the DTE.
	&S4	On Early. DSR is Off when the modem is in an idle state, and goes
		ON when a command is received to enter Data mode.
	&S5	Delay to Data. Like Standard RS232, but DSR is not turned ON
		until the modem is in Data mode.
	&S6	Dial Backup Toggle. DSR is turned Off during a dial backup attempt,
		and ON when the attempt is completed.

13-10 November 1996 3980-A2-GB30-20