Chapter 4
Voice over IP
Configure the telephony service
Verifying telephone connectivity
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To configure the SIP telephony service:
1Go to the SpeedTouch™ web pages.
2In the menu select Toolbox > Telephony.
3On the top right, click Expert configure.
4Enter the IP address and the port number of the registrar and the proxy, as provided by your ISP:
Some of the SIP components are explained below:
Proxy: The SIP proxy server at your provider’s forwards signalling messages between the caller and callee.
Registrar: The SIP registrar resembles a DNS, as it matches your URI with your IP address. Your SpeedTouch™ will periodically - depending on the expire time - register its correct IP address with the SIP registrar that may be collocated with the proxy server.
Expire Time: This is the frequency with which your IP address is updated on the registrar.
5Click Apply.
To verify the voice connection:
1Make sure the SpeedTouch™ is powered on and ready for service.
2Check whether your phone is properly attached to the SpeedTouch™.
3Make sure the Internet telephony service is enabled and configured.
4The VoIP Ready LED must be on.
5Pick up your phone, wait for the dial tone, and dial the number. You can dial a ‘#’ after the phone number to indicate the end of the number, as a result of which the phone number will be called instantly.
The phone(s) attached to the SpeedTouch™ are reachable for incoming VoIP calls, as long as your SpeedTouch™ is powered on and the VoIP Ready LED is on.
For calls over the regular phone line, your phones are line powered by the telephone company and thus are always reachable, even if the modem is powered off.
