Talkswitch CentrePoint Technologies Switch 3.24 User Manual

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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 -> VoIP Configuration at the remote site, then click the 
Registration Status button. If registered, go to section 3.1 below and initiate a 
 
VoIP call.
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.