I configured AAR routing with help from the admin guide, but when I trie to call an outside PSTN number I only get 'Not enough bandwith'. Never the reroute mark. I use 2 2811 srst voice gateways. When the first is out of bandwith I want to reroute by the second. I changed the serviceparameter and the location bandwithes. Also special CCS's and AAR groups. All AAR groups prefixes are '9' I made route patterns with the 9 as the first number.
Can somebody pleasy put me in the right direction.
The key reason it is failing here is that you are trying to call an outside number using AAR. That's not what AAR does.
AAR is used as an alternate route to other phones or routepoints within CCM, not outside numbers. Suppose you have a phone with a local number of 555-1212 (ext 1212) in area code 512. And also suppose the phone you are calling it from is in another area code, such that it would be a long distance call if you weren't using voice. And suppose the bandwidth specified between both phones' Location settings had been exhausted. Now finally, you pick up the phone and dial 1212. Then, and only then, AAR would recognize BW had been exhausted, and use a combination of the prefix configured in the AAR group (ie '91') plus the external number mask configured in the Phone DN (ie, 5125551212) to dial the phone (915125551212) vial PSTN gateway. It would use the calling phone's AAR CSS to match a route pattern ->route-list/gateway and make the internal call via the PSTN.
What you want to do is use a combination of route-group and route-lists to allow you to hunt from the first 2811 to the second for outbound calls. AAR will not work for this.
Generally speaking, you should place each gateway in its own route-group. Then place the two route-groups into a route-list in the order you want to use the gateways. Then set your route-patterns to use the route list. This way Callmanager will try the first gateway, then the second.
In your particular case, I'm concerned about why/how you are using Locations. Help me understand the call flow you are trying to achieve. You mentioned 2 SRST gateways with Location settings.
I'm unclear if you have two or three sites, where the IP Phones are, and why they are using gateways on the other side of a WAN link such that Location becomes necessary.
How many sites to you have, and where are the Callmanager servers and gateways located? Where are the IP Phones that are using each gateway.
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