Philips D721, D711 manual Dial tone

2.6Tones

Acoustic signals when telephoning:

•You hear the dial tone when you lift the handset when the telephone is idle or when you press the hands free key.

•The ringing tone sounds when the called connection is available.

•The busy tone sounds when the connection you are ringing is busy.

•The camp-on busy tone advises you of another pending call during a conversation.

•Tone ringing signals calls with the preset melody and volume.

Acoustic signals during operation and programming:

•The positive acknowledgement tone confirms correct input.

•The negative acknowledgement tone indicates an incorrect operation.

Representation of the tones (Figures in seconds )

Ringing tones

Calling an ISDN phone: (repeated)

Calling an analog port

(Basic 20 only): (repeated)

tone pause

0,5	0,5	0,5	3,5	0,5	0,5	0,5
1			4		1

Audible tones (through the handset or the loudspeaker when calling hor programming)

Dial tone Continuous tone

Ringing tone (repeated)

Busy tone (repeated)

Call waiting tone

Positive acknowledgement tone

1 4 1

0,5 0,5 0,5 0,5 0,5 0,5 0,5 0,5 0,5

0,2 0,6 0,2 3 0,2 0,6 0,2

0,6

Negative acknowledgement tone 0.1 each

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