Dell 1355CN, 1355cnw manual 353, Sets the line type to Pstn, Sets the line type to PBX

Line Monitor Off		Turns off the volume of the line monitor.
	Low	Specifies the volume of the line monitor, which
		audibly monitors a transmission through the internal
	Medium*
		speaker until a connection is made.
	High
Ring Tone	Off	Turns off the volume of the ring tone.
Volume
	Low	Specifies the volume of the ring tone, which indicates
		that an incoming call is a telephone call through the
	Medium
		internal speaker when Receive Mode is set to
	High*
		Telephone/Fax.
Line Type	PSTN*	Sets the line type to PSTN.
	PBX	Sets the line type to PBX.
Tone/Pulse	Tone*	Sets the dialing type to Tone.
	Pulse(10PPS	Sets the dialing type to Pulse (10 pulse per second).
	)
	Pulse(20PPS	Sets the dialing type to Pulse (20 pulse per second).
	)
Resend Delay	8*	Specifies the interval between transmission attempts.
	3–255
Redial	3*	Specifies the number of redial attempts to make when
Attempts		the destination fax number is busy. If you enter 0, the
	0–9
		printer will not redial.
Redial Delay	1*	Specifies the interval between redial attempts.
	1–15
Junk Fax	Off*	Does not reject faxes sent from unwanted numbers.
Setup
	On	Rejects faxes sent from unwanted numbers by
		accepting faxes only from the fax numbers registered
		in the Phone Book.
Remote	Off*	Disables the remote receive feature.
Receive
	On	Receives a fax by pressing a remote receive code on the
		external telephone after picking up the handset of the
		telephone.
Remote Rcv	00*	Specifies the remote receive code in two digits to start
Tone		Remote Receive.
	00–99

Understanding the Tool Box Menus

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