T A L K S W I T C H V O I P N E T W O R K T R O U B L E S H O O T I N G G U I D E
The following steps will verify the registration status of the remote location to verify if SIP port 5060 is configured properly:
1.Go to System Information
2.Verify that the firewall port mappings for SIP have 5060 pointing to the proxy location private IP address settings.
3.Perform a configuration save at the proxy location, followed by a configuration save at the remote location.
4.If the proxy and remote locations are now registered, the port mapping values at the remote location were causing the problem. You can now initiate a VoIP call.
3.2 INITIATE THE VOIP CALL
From the remote site location, dial a valid VoIP number for the proxy server location that is set to ring an extension only. This will verify the remote and proxy location SIP mappings, as well as the public IP and proxy server IP addresses at the remote location. If the proxy location doesn’t ring or no ringing is heard from the remote location, confirm the remote and proxy units are registered and attempt the call again.
3.3 ANSWER THE VOIP CALL
With ringing heard at the proxy and remote locations, check for audio to verify the RTP settings.
3.3.1 Audio received at proxy location
If audio is received at the proxy location, then the RTP settings in the proxy location router mapping table are correct.
3.3.2 No audio received at proxy location
If no audio is received at the proxy location, verify the following:
•Proxy location RTP settings. For more information, refer to SIP and RTP Port Assignments on page 5.
3.3.3 Audio received at remote location
If audio is received at the remote location, then the RTP settings in the remote location router mapping table are correct and VoIP is properly configured.
3.3.4 No audio received at remote location
If no audio is received at the remote location, verify the following:
•Proxy location RTP settings. For more information refer to SIP and RTP Port Assignments on page 5.
If you encounter any difficulties not covered in this guide, please contact Technical Support.
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