DTMF tones
33
DTMF tones
The numeric keys of the phone (0 to 9,* and #) always trans-
mit DTMF tones (Dual Tone MultiFrequency) also known as
“ touch tones ”. DTMF tones are used by certain telephone
services such as answering machines, pagers, etc.
Rather than keying in a separate code after each of a series
of requests,you can carry out complex operations in one go.
e.g.To reach ‘Listen to new messages’ in
one go
An answering machine has the following characteristics:
phone number 12345, password 9876, code 3 to
activate the function ‘Listen to new messages’.
■
Enter 12345,
12345
is displayed.
■
Press and hold
to enter a wait character.
12345w
is displayed.
■
Enter 9876,
12345w9876
is displayed.
■
Press and hold
to enter a pause character,
12345w9876p
is displayed.
▼
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Summary of Contents for TCD808/A9
Page 1: ...USER MANUAL ...
