This page describes a simple simulation in configuring multicast paging in UCM and IP Phones.
- Go to UCM‘s Web UI > Call Features > Paging/Intercom > configure Multicast IP Address and its port. The IP range is from 22.214.171.124 – 126.96.36.199
2. Go to IP Phone > Setting > Multicast Paging > Listening Address > enter the 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
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.