Chapter 4

Voice over IP

4 Voice over IP

Voice over IP

The SpeedTouch™ VoIP solution

Internet telephony or Voice over IP (VoIP) can be defined as the transfer of telephone calls over your Internet connection.

With your SpeedTouch™ you can make Internet and regular telephone calls using traditional analogue phones, connected to your SpeedTouch™.

As VoIP signalling protocol your SpeedTouch™ uses the Media Gateway Control Protocol (MGCP), RFC 3435.

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Multi-line service The voice service on your SpeedTouch™ provides additional lines without the need for additional copper pairs. The additional lines allow you to make and receive several internal and external Internet calls simultaneously.

Fax You can also connect a fax machine to your SpeedTouch™ in order to send and receive faxes over your Internet connection or over the traditional phone line.

The following MGCP configuration parameters are provided by your ISP:

IP address and port number (usually 2727) of the provider’s call agent

Call agent The provider’s call agent contains the call control "intelligence". It creates, modifies and deletes connections in order to establish and control media sessions with other multimedia endpoints.

E-DOC-CTC-20051017-0153 v1.0

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