I have one way to do reroutes with h323 gateways. Its kind of a pain, but it works.
Customer has a cluster, but with some remote locations that are h323 gateways. I have a pattern that says:
450XXXX go out this H323 gateway.
But if the h323 gateway is down, I need to reroute this call to the PSTN locally.
I create a route group/list. Priortized the list to first hit the H323 gateway. If its not available, the call goes to the next on the list, which is then manipulated at the RL/RG setting to change to the PSTN 5551212XXXX and dials out.
One more question - the title of this post indicates you want to re-route an internal call, but your description indicates TEHO with local PSTN fallback (I think). Does the call in the first case stay inside your CUG or hop off to the PSTN at a remote office? If it is a true internal reroute then you might want to use AAR.
Actually though my last post was not right either - AAR is bandwidth based and NOT for a full failure of the WAN where the branch would be in SRST, only oversubscription of the bandwidth. Your solution is the correct one for the scenario.
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