I would like to know whether AAR is used to reroute the calls through PSTN if WAN is congested or even if WAN link fails ? Because I have a centralized CCM running at HO,and Branch with SRST enabled. I guess translation pattern might help me at remote site to dial HO using extension. What abt HO ? Do I have to manipulate the translation patterns and CCS or AAR will do ?
AAR is not for use during a WAN failure. AAR is used to automatically reroute calls during times when there is not enough bandwidth to route the call over the WAN. SRST is used to take over call processing during a WAN failure.
I am not using CCM 4.2. In this case, Is there any way to reroute the call from central Office to remote office during the WAN failure ? What i mean is HO user dials the extension of remote office ( eg : 2001). then we have to do the prefix automatically to the remote office PSTN Number so that call will be push out through the gateway at HO to PSTN.
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