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E-DOC-CTC-20051017-0152 v1.0
Chapter 4
Voice over IP
4 Voice over IP
Voice over IP Internet telephony or Voice over IP (VoIP) can be defined as the transfer of
telephone calls over your Internet connection.
The SpeedTouch™ VoIP
solution
With your SpeedTouch™ you can make Internet and regular telephone calls using
traditional analogue phones, connected to your SpeedTouch™.
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.
(
As VoIP signalling protocol your SpeedTouch™ uses the Media Gateway
Control Protocol (MGCP), RFC 3435.