Multicast Paging in Grandstream UCM IP PBX

Description

This page describes a simple simulation in configuring multicast paging in UCM and IP Phones.

Steps:

  1. Go to UCM‘s Web UI > Call Features > Paging/Intercom > configure Multicast IP Address and its port. The IP range is from 224.0.1.0 – 238.255.255.255
Figure 1: At the UCM, configure paging extension and Multicast IP Address and port: 227.11.10.101:7077

2. Go to IP Phone > Setting > Multicast Paging > Listening Address > enter the same Multicast IP Address and port as configured in UCM

Figure 2: At the phone Settings, make sure you enter same Multicast IP Address and port as configured in UCM

3. Dial to paging extension (in this example, it is ext. 8008) and the phones with the same Listening Address will auto-answer the paging call

Figure 3: The phones with the same Listening Address will auto-answer the paging call.

Note

There are no user limitations, and the only limitation is the network bandwidth and how the router treats the broadcast packets. It is not recommended to be sending multicast transmission to a large group of users as it will cause network congestion.

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