Dial an extension to a phone registered to SRST router?
I have a question about how the following setup is suppose to work
We are running Cisco UCM6 that is used for sites across a WAN. The remote site routers are connected into the WAN and a PSTN including enabled for SRST.
So, when the WAN fails the phones are registered with it's local router and is able to place and recieve calls from it's local PRI. Plus they can call users at other sites by dialing the user's extension.
Great! I understand that completely. Until this next part ...
But, Phones that are still registered to the UCM server who wants to dial a phone at remote sites running to SRST ... and still using it's extension.
Let's say we are dialing a phone at "remote site A". The phone we are dialing is at extension 3010. So we dial 3010 of coarse.
When remote site "A" is down and that site is operating in SRST how does the dialing work now.
Can we still dial 3010?
I'm asking because this is what we have setup and this is working, but I don't see where or how that can be configured. BTW there are no translation patterns configured!
Can someone explain how this works and how (if any) this can be setup?
Re: Dial an extension to a phone registered to SRST router?
No worries. AAR is a congestion method, not a failover method. The only circumstance for AAR to work is when the BW is not enough to make a call and then it's rerouted over the PSTN. But if the phones are not even registered you cannot exhaust the BW.
CFUR is Call Forward UnRegistered, it should be under DN config in CCM 4.2/4.3 and CUCM 6.X and above
Since the phones will unregister from CUCM and be in SRST you can put the PSTN number for those phones and it will automatically dial (as long as CSS and PSTN access is permitted for CFUR)
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