VOIP Multicast Paging Solution
Posted on 2012-08-27
We're using Astra Phones and have set them to do group paging. There are two groups of phones on two different subnets. Unfortunately the subnets are not in close proximity to each other so we have to link them over a VPN between our two Edgemarc 4550 routers. We've programmed paging so group one responds to paging when it sees packets addressed to 184.108.40.206. Group two responds to paging when it sees packets addressed to 220.127.116.11. All phones respond when they say a packet going to 18.104.22.168.
Things work fine when everyone's on the same subnet. When we split them up and rely on an Edgemarc VPN we can't page the remote subnet since multicast packets aren't routed.
Is there any commercial solution that we can use to get around this situation? I have yet to find a device that will encapsulate multicast packets for rebroadcast on remote segments. I thought that maybe cyberdata might have an appropriate solution. They seem to have a sip paging system but I don't know if it will put out multicast packets.
How can I solve this problem?