Algo 8180, User Manual

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Multicast Overview
In addition to the ring and page features, the 8180 is able to send and
receive IP audio multicast messages over the network to support larger
deployment for both paging and ring/notification. This provides a scalable
and efficient method of building large scale notification solutions.
In the diagram above, the bottom 8180 is configured with a SIP Page
Extension. When called from a phone, the SIP registered 8180 auto-
answers and plays the page audio over its speaker. Simultaneously, the
registered 8180 endpoint broadcasts the audio over the network using
RTP multicast to any number and combination of Algo IP speakers,
paging adapters, and strobes as required.
The registered 8180 (i.e. bottom of illustration) is the multicast MASTER
and the top 3 endpoints are multicast SLAVES. The Slave endpoints
require a PoE network connection, but do not require registration to the
communication server.
Multicasting can also be used to distribute loud ring or other alerting (e.g.
safety, security, or emergency events) over multiple Algo endpoints (e.g.
8180, 8186, 8188, 8128, 8201, 8301, and 8373).