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E-DOC-CTC-20080421-0010 v1.0
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8 Troubleshooting
8.3 Voice over IP Troubleshooting
Introduction
If you cannot establish a phone call via your Thomson Gateway, try the suggestions below.
Calling over VoIP
If you have problems calling via VoIP, check whether:
Your telephone is correctly connected to the Thomson Gateway.
Your telephone is working on the regular phone line (PSTN):
Connect your phone directly to the telephone wall outlet.
Try to make a phone call.
Your phone number, user name, and password is configured correctly.
The registrar’s and proxy server’s IP address and port number are configured correctly.
The Power, Broadband/DSL and Voice LEDs are on.
Calling over PSTN
If you have problems calling via the regular phone line, check whether:
Your telephone is correctly connected to the Thomson Gateway.
Your telephone is working on the PSTN network:
Connect your phone directly to PSTN.
Try to make a phone call.
The Forced FXO service is activated, or whether your service provider requested you to dial an extra
prefix for making calls via PSTN.
Problems with Supplementary Services
If you have a problem with a supplementary telephony service, check whether the service is activated.
As soon as the LED turns on, you will hear a click, indicating the switch from PSTN to VoIP.
If the Thomson Gateway is turned off, phone calls are always routed over PSTN.