Additional Features; Sending Dtmf Tones - Nokia 638 User Manual

Version: 0.7, Date: 11 (2) Dec.
1996
Status: ToL, JaK, JaG, SIR, JoF

6. ADDITIONAL FEATURES

Sending DTMF Tones

The Dual Tone Multi Frequency (DTMF) feature allows
you to send touch tones which can be used to con-
trol equipment such as bank-by-phone or voice-
mail by using your cellular phone.
There are two alternative ways to send DTMF tones:
1. Manual dialing
Make a call to the desired number in the usual
way (e.g. to your bank's computer phone number).
Enter the digits to be sent as DTMF tones
(e.g., your bank account number and password).
2. Automatic dialing
You can send a string of digits as DTMF tones by
storing the string in a phone directory location and
then recalling it for automatic DTMF transmission.
When storing the string, insert a wait character
between the access phone number and DTMF
number. (See Adding a Wait Character on page 39.)
Recall the phone directory location containing
the phone number and DTMF string to be sent.
Press to dial the phone number.
After the phone number has disappeared from
the display, wait for the tone and press
If the keypad tones have been set off, the DTMF
tones will be sent, but you will not hear them.
To end the call, press
transmission is completed and the phone has
returned to the normal call mode.
Note: If you recall a DTMF number from the memory
during a call, do not recall the number by first entering
the location number and then pressing
because then the location number will be sent as
DTMF tones.
38
NHA-4NG Nokia 638_AU
Authentication version
US English 9351137
Issue 3
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after the DTMF
or ,