Nokia 2110 - Manual (Page 99)

Sending DTMF Tones
Placing p and w characters between DTMF digits
You may insert a pause of 2.5 seconds or a wait in front of,
or between DTMF digits.
For a pause, press the ✱ key three times quickly so that a p
is displayed. All digits following the pause will be sent as
DTMF tones.
For a wait character, press the ✱ key four times quickly so
that a w is displayed.
To send a DTMF sequence which contains wait characters:
Make a DTMF call in the normal way.
Wait for answer. Press the DTMF selection key as many
times as there are wait characters.
All digits following these characters will be sent as DTMF
tones.
Note: Some SIM cards do not allow pause or wait charac-
ters. If your SIM card rejects the characters, first select the
phone memory and then store the sequence.
96