Matrix PRASAR UCS - Peer-To-Peer Calling

Matrix PRASAR UCS System Manual 995
Peer-to-Peer Calling
What’s this?
Making an IP call without the intervention of a proxy server is called Peer-to-Peer Calling. As Peer-to-Peer calling
does not require a proxy server, voice communication using this application can be done virtually free of cost. The
major cost savings offered by this application makes it a very attractive mode of inter-branch or intra-office voice
communication.
For dialing a number use ‘*’ in-place of ‘.’ This feature is not supported in Standard SIP Phones.
How it works
Let us understand how to use Peer-to-Peer Calling with the following illustration:
• Two offices are directly connected over the IP network.
• PRASAR UCS is installed at Location A.
• The System at Location B may also be PRASAR UCS.
• Peer-to-Peer calls can be made between the two locations with suitable configuration of PRASAR UCS
and the System.
• At Location A, you need to do the following configuration in the PRASAR UCS:
• Select a SIP Trunk to be used for this application and enable it. For example, SIP1.
• Set the SIP Trunk Mode of this trunk to Peer-to-Peer.
• Keep the SIP ID field of the SIP trunk blank.
• Set the Treat Incoming call as option on the SIP trunk to Station.
For detailed instruction, see “Configuring SIP Trunks”.
In the Router, you must configure the same SIP and RTP Ports as configured in the PRASAR UCS. In
other words, you must configure Port Forwarding for SIP and RTP on the Router.