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Conducting calls – enhanced functions
72
Using dual-tone multifrequency
signalling
Your handset operates on the basis of digital
information transmission. However, certain
applications, for example answering machines, can only
be operated using analogue technology. For this you
have to send signals using the dual-tone multifrequency
signalling (DTMF) process.
Depending on how your system is configured
(automatic tone dialling on or off - to be configured by
the service engineer) you must first switch to DTMF
dialling. This means, forexample, that you can
communicate with a variety of voice storage systems.
You will find further details in the operating instructions
for the relevant applications.
Automatic tone dialling is not active
During a connection you have to first switch to dual-
tone multifrequency signalling.
p You are conducting a call.
Open the system menu.
> < [Select the menu item and confirm.
> < [Select the menu item and confirm.
o Enter the numbers. All entries are sent as DTMF
signals.
Automatic tone dialling is active
o Enter the numbers. All entries are sent as DTMF
signals.
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