Nortel Networks 1000S manual Signaling Server

System architecture Page 27 of 44

Signaling Server

CS 1000S systems use a Signaling Server. The Signaling Server is an industry-standard, PC-based server that provides a central processor to drive H.323 and Session Initiation Protocol (SIP) signaling for IP Phones and IP Peer Networking. It provides signaling interfaces to the IP network using software components that operate on the VxWorks™ real-time operating system.

The Signaling Server has both an ELAN and TLAN network interface. The Signaling Server communicates with the Call Server through the ELAN subnet.

The Signaling Server is mounted in a 19-inch rack. The Signaling Server can be installed in a load-sharing redundant configuration for higher scalability and reliability.

The following software components operate on the Signaling Server:

•Terminal Proxy Server

•SIP/H.323 Signaling Gateways

•Network Routing Service

•Element Manager

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 (553-3001-213).

Communication Server 1000S Overview