My Customer wants a fault tolerant setup for VoIP. There will be two 7200 or 3845 routers, each with E1/ PRI card. Each router will connect to a seperate E1/PRI card in the PBX.
The fault tolerant setup which my customer wants is that whenever one of the E1/PRI links goes down, the call should get routed through the other link.
For outgoing calls the solution looks to be simple. The PBX can be configured to place calls through the other trunk when it senses a E1/PRI trunk has gone down.What about incoming calls? Calls landing on the router which has a failed trunk will not mature.Is there a way by which the calls can be made to land on the other router? Any brilliant ideas?
This document is an early notification of a behaviour change that will be introduced in IOS XR release 6.5.
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