[cisco-voip] Route Pattern/FAC question

[Wes Sisk]

AAR will auto reroute to PSTN if WAN is OoBandwidth.  However,  FAC  
does not work on trunk to trunk calls (or didn't when I wrote the  
networks presentation last year) i.e.   cluster1---->(ICT)cluster2 
(mgcpgw)--PSTN.

scenario that does work:
remote site has all calls default route to local gateway through a  
route pattern that uses FAC
calls to central site route over ICT with AAR (use special CSS to  
match a RP that does not use FAC)  make your local gw be the 2nd  
member in the route group to cover the case where the central site  
does not respond at all (WAN down).

/Wes


On Feb 13, 2006, at 5:01 PM, Ed Leatherman wrote:

I'm trying to build a scenario in the lab that functions like this:

Remote site (seperate CCM 4.1) has intercluster trunk to Main Campus  
CCM 4.1. Also has PRI to PSTN.

If a remote site user dials an extension for the main campus, it will  
hit a route pattern/Route List that has a route group containing the  
ICT first, and then a route group containing the PSTN Gateway as the  
second item. So if the WAN connection is down or out of bandwidth it  
translates the called number and sends it out the PSTN gateway  
instead. So far so good.

What the remote site has now asked is to have forced auth. codes on  
long distance PSTN calls. Is there a way to configure it such that  
for calls to the main site callmanager only asks for a FAC if the  
call gets directed to the PSTN? It seems i have to specify the FAC  
from route pattern page, which will ask for a FAC every time even on  
ICT calls. I wasnt sure if there was a more clever way to do it and  
get the desired effect.

I took a look at AAR, but it mentioned that it was for intrA-cluster  
calls rather than intER-cluster calls.. and i'm not sure it would  
help me out anyway since calls aren't re-routed in the event of WAN  
failure.

Thanks!
-- 
Ed Leatherman
IP Telephony Coordinator
West Virginia University
Telecommunications and Network Operations
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