Speech path issues on Remote phones

If users are experiencing speech path issues on Remote phones, please check the following:

Remote SIP Phones

1. Navigate to the SIP Settings page
2. Verify your NAT Settings for your network.
3. Navigate to Extensions page, scroll down to Device Options section.
4. Ensure nat is set to Yes.

Remote XSTIM Phones

1. Navigate to XSTIM Settings page, scroll down to Advanced General Settings section.
2. Ensure the Public IP field is filled in with the public ip address of the router.

Port Forwarding

Typically, the UCx Server is deployed behind a router that implements NAT/PAT between the UCx server and the Internet. In order for the UCx system to properly establish voice path for calls in all possible scenarios, it is necessary to enable port forwarding of certain ports to the UCx server.  This is done on the router. The ports must be forwarded to the IP address of your UCx Server (by default 192.168.1.200). 

Firewall

If there is a firewall implemented on the network, the respective ports (see table in Port Forwarding section) need to be opened.