24Description and features
The following software components operate on the Signaling Server:
•"Terminal Proxy Server" (page 24) (TPS)
•"SIP/H.323 Signaling Gateways" (page 24)
•"Network Routing Service" (page 25) (NRS)
•"Element Manager" (page 25)
All the software elements can coexist on one Signaling Server or reside individually on separate Signaling Servers, depending on traffic and redundancy requirements for each element.
For more information about H.323 and SIP Trunking, refer to IP Peer Networking: Installation and Configuration
Terminal Proxy Server
The Terminal Proxy Server (TPS) acts as a signaling gateway between the IP Phones and the Call Server using the UNIStim protocol. The TPS performs the following functions:
•converts the IP Phone UNIStim messages into messages the Call Server can interpret
•allows IP Phones to access telephony features provided by the Call Server
The TPS also controls the IP Phone registration.
SIP/H.323 Signaling Gateways
SIP/H.323 Signaling Gateways are software components configured on virtual loops, similar to IP Phones. SIP/H.323 Signaling Gateways bridge existing call processing features and the IP network. SIP/H.323 Signaling Gateways also enable access to the routing and features in the MCDN feature set.
Note 1: The SIP/H.323 Signaling Gateway must register with the
Network Routing Service (NRS).
Note 2: Virtual TNs enable you to configure service data without hardwiring IP Phones to the CS 1000S system. Virtual TNs are configured in LD 97.
To support IP Peer Networking, dual Call Servers in a CS 1000M Small System must be associated with Signaling Servers that run SIP/H.323 Signaling Gateway software. The number of Signaling Servers required depends on the capacity and level of redundancy required.
Nortel Communication Server 1000
Communication Server 1000M and Meridian 1 Small System Overview
Release 5.0 30 May 2007
Copyright © 2003 - 2007, Nortel Networks