Description Page 37 of 910
IP Line Description, Installation and Maintenance

Meridian 1

A Meridian 1 system does not have a Signaling Server in its configuration.
Each Voice Gateway Media Card functions as both a UNIStim Line Terminal
Proxy Server (LTPS) and voice gateway.
In this system configuration, one Voice Gateway Media Card is configured
as the Leader. IP Phones register with individual Voice Gateway Media
Cards.
Note: If a Media Card 32-port card, a Media Card 8-port card, or an
ITG-P 24-port card is running IP Line 4.5 software, it is known as a
Voice Gateway Media Card.

CS 1000 systems

CS 1000 systems have a Signaling Server in their network configuration. The
Signaling Server is a server that provides signaling interfaces to the
IP network. The Signaling Server’s central processor drives the signaling for
IP Phones and IP Peer networking.
In IP Line 4.5, the LTPS executes on the Signaling Server and the voice
gateway executes on the Voice Gateway Media Cards. All IP Phones register
with the Signaling Server. The Voice Gateway Media Cards only provide
access to the voice gateway.
The Signaling Server is the node leader and, by default, acts as a Master for
the node.
Signaling Server redundancy
There are several methods of redundancy for a Signaling Serve. See Table 3.
Table 3
Methods of Signaling Server redundancy (Part 1 of 2)
Stage Description
With a backup Signaling Server
1A backup Signaling Server can be configured in a normal configuration.