Ericsson GH198 - Manual (Page 32)

DTMF Signalling
Sending DTMF Signals
You can use keys 0 -- 9, * and # to send DTMF (Dual
Tone Multi Frequency) signals to access special services,
for example ‘‘banking by phone’’.
DTMF signals cannot be sent unless the ‘‘DTMF’’
option in Special Function No 1. Key Clicks, Silent
Keypad or DTMF Signals is enabled.
If required, select the ‘‘DTMF’’ option. This can be done
both when the phone is in standby mode and when a call is
progress. Refer to the chapter Special Functions.
1. Call the desired number.
2. When the call has been connected, pressing keys
0 -- 9,
* and # will cause the corresponding DTMF
signals to be sent.
The characters entered remain in the display. To
avoid that the characters are stored in the scratch
pad, erase them using the C (CLEAR) key before
ending the call.
Sending a Code
If you need to send a code (a sequen-ce of digits), for
example your personal access code, it could sometimes be
advantageous to use the following method.
A code cannot be sent unless the ‘‘DTMF’’ option
in Special Function No. 1 is disabled.
If required, select the ‘‘CLICK ON’’ or ‘‘SILENT’’ option.
This can be done both when the phone is in standby mode
and when a call is in progress. Refer to the chapter Special
Functions.
1. Call the desired number.
2. When the call has been connected, enter the code
you wish to send. The code can be any
combination of the digits 0 -- 9, and the characters
* and #.
If you make a mistake, while entering the code, you
can correct it with the C (CLEAR) key.
You may enter a maximum of 36 characters.
However, if you enter digits only, a maximum of
20 can be entered.
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