Summary
This article describes how to set up and operate Zone Paging with clusters.
Procedure
When you add an Application Gateway to a cluster, the zones on that Application Gateway are replaced by the cluster-wide zone list. Therefore, when you configure Zone Paging for a cluster it is best to use the following procedure:
- Configure each Application Gateway to be included in the cluster, including the IP/DN mapping, synchronization, and multicast address range.
- Add all member Application Gateways to the cluster.
- Synchronize the cluster.
- Create the zones to be used by the cluster. Zone Paging operation with a cluster is the same as with a single Application Gateway, except for the following points:
- For zone paging across a cluster, multicasting must be enabled on the router and each Application Gateway must have a different multicast IP address range specified on the Operation > Voice Office > IP Phone page of the Administration Tool.
- The Application Gateway that initiates a page is responsible for pushing paging requests such as “start page” and “end page” to the rest of the cluster.
- When receiving a “start page” request, an Application Gateway confirms whether the zone is available (not in use). If an Application Gateway does not reply to a “start page” request, the page is not pushed to that Application Gateway (it is likely offline).
- Once a page starts, each cluster member listens for Realtime Transfer Protocol (RTP) traffic on the RTP port. Each cluster member forwards the page to its registered phones and manages paging operation.
