Conducting calls – enhanced functions

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Using dual-tone multifrequency signalling

Your handset operates on the basis of digital informa- tion transmission. However, certain applications, forexample, answering machines, can only be operated using analog technology. For this you must send signals using the dual-tone multifrequency signalling (DTMF) process.

Depending on how your system is configured (automat- ic 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 must first switch to dual-tone multifrequency signalling.

You are on a call.

Call the system menu.

Select the menu item and confirm.

Select the menu item and confirm.

Enter the numbers. All entries are sent as DTMF sig- nals.

Automatic tone dialling is active

Enter the numbers. All entries are sent as DTMF sig- nals.

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Siemens HiPath 500, HIPATH 3000 Using dual-tone multifrequency signalling, Automatic tone dialling is not active