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 Session Initiation Protocol (SIP), defined in RFC 3261.
(
Fax
What you need from your ISP
Uniform Resource Identifier
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.
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 SIP configuration parameters are provided by your ISP:
Uniform Resource Identifier (URI)
User name
Password
IP address and port number (usually 5060) of the provider’s registrar
IP address and port number (usually 5060) of the provider’s SIP proxy server
The SIP Uniform Resource Identifier (URI) is a unique name used to identify and locate your telephone. The SIP URI can have a numerical format or the format user@host.
Examples:
3443614
username@hostname.org
username@192.168.10.1
3443614@hostname.org
If your provider gives you an URI in the format containing an ‘@’, your service provider will tell you whether the ‘@’ can be formed on your phone by dialing a ‘1’, ‘*’, or ‘#’.
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