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.
Is there a better way to do this?