Philips D721, D711 manual Volume can be, Altered in nine steps Several times to, Store the modified

2	The volume can be	If necessary, press	043188180
	altered in nine steps	o several times to	043188180
		store the modified	ŋǤ‰ÏÌÓÛı
		setting

3.3.8Switching the microphone on/off (muting)

Switch off the microphone if you want to talk to somebody in the room during a telephone conversation without wanting your telephone partner to listen in.

Initial state: conversation

Steps:

No.	Description	Input	Display
1	Switch the handset
		s¢	043188180
	and hands free		043188180
	microphone on or off		ŋǤ‰ÏÌÓÛı

3.3.9DTMF/keypad signalling

You can use dual tone multifrequency (DTMF) or the keypad method to control called computers. When you use the DTMF method, coded tones are sent and, when you use the keypad method, coded digital signals are sent. The method you choose depends on the chosen computer. Once you have sent the complete telephone number, or after establishment of a connection to an incoming call, the telephone switches over automatically to DTMF.

Initial state: conversation

Steps:

No.	Description	Input	Display
1	Switching between
		s±	1234-K4711M4712§
	DTMF digits and
	keypad signals		ŋǤ‰ÏÌÓÛı

In the example, the telephone number 1234 has been dialled, followed by the transmission of 4711 as keypad data and 4712 as DTMF data.

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