Nortel Networks Broadcast Server - Manual (Page 17)

9 Broadcast Server User Guide
Chapter 2
Application Gateway and
Broadcast Server Operation
As shown in the following illustration, Broadcast Server communicates
only with the Application Gateway. The Application Gateway provides
Broadcast Server with device information and manages all communication
with other servers and IP telephones. The Application Gateway also
transforms alerts so that they are in the appropriate format for display and
delivery to IP telephones.
Note
Sites using a cluster of Application Gateways should configure all
Application Gateways in the cluster with the same Broadcast Server.
The Application Gateway Administration Guide explains the IP phone setup
required for Broadcast Server. To enable communication between the
Application Gateway and Broadcast Server, you specify in the Application
Gateway Administration Tool the base URL where Broadcast Server is
running. That is the only information that the Application Gateway needs
to register with Broadcast Server.