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Installing the VoIP V3 Intercom

Configure the Multicast Parameters

Operations Guide 930472A CyberData Corporation

2.2.9 Configure the Multicast Parameters

Multicast groups use multicasting to create public address paging zones. Multicasting is based on

the concept of a group. Multicast addresses specify an arbitrary group of IP hosts that have joined

the group and want to receive traffic sent to the group. Group members send IGMP messages to

their local multicast routers, allowing the group traffic traversal from the source.

The Multicast Configuration page allows the Intercom to join up to 10 paging zones for receiving

ulaw/alaw encoded RTP audio streams. A paging zone can consist of one or many CyberData

multicast group-enabled products. There is no limit to how many devices can be in a given paging

zone. Each multicast group is defined by a multicast address and port number. Each multicast group

is assigned a priority, allowing simultaneously arriving pages to be serviced based on importance.

Multicast groups are compatible with IGMP through version three. The Intercom supports

simultaneous SIP and Multicast.

1. Click on the Multicast Configuration button to open the Multicast Configuration page. See

Figure 2-17.

Figure 2-17. Multicast Configuration Page

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CyberData 011186 Spécifications Page 44