Nokia 3285 - Manual (Page 51)

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• SET TOUCH TONES
Touch tones are sounds produced when you press the phone keys. Sometimes,
touch tones are called DTMF tones.
You can use touch tones for many automated services such as checking
bank balances and airline schedules and using your voice mailbox. Touch
tones can be sent only when a call is active.
Set manual touch tones
1 Press Menu 4 > 2 > 3 > 1 (Settings > Phone settings > Touch
tones > Manual touch tones).
2 Select one of the following options, then press OK:
Set touch tone length
You can also set the length of each touch tone:
1 Press Menu 4 > 2 > 3 > 2 (Settings > Phone settings > Touch
tones > Touch tone length).
2 Scroll to Short (0.1 second) or Long (0.5 second).
3 Press OK.
Store touch tone sequences (strings)
You store touch tone strings the same as you store names and numbers.
You can store a digit sequence to send as touch tones.
Continuous The tone sounds as long as you press and hold a key.
Fixed Sets the tone length to 0.1 second, regardless of
how long you press a key.
Off Turns off tones; no tone is sent when you press a key.