[cisco-voip] AAR vs. Route Lists

[Andrius Kislas]

a) AAR will work inside one CallManager cluster without any IP or PSTN
trunks.
b) AAR will save your time because it will automatically take external
called phone number from phones configuration and reroute calls.

Andrius

Kelemen Zoltan wrote:
> Hi,
> 
> this may be a noob question to some of you, but there's something I 
> don't quite understand:
>  don't Route Lists provide the same (or rather - similar) functionality 
> as AAR? If not (and I suppose not) what's the difference?
> 
> Case in point:
>   We have a client with three CCM clusters, all connected through ICTs. 
> We haven't used AAR so far, but the calls are routed through Route 
> Lists: the trunk is the first route group, but if that fails, calls are 
> redirected to the PSTN route group with appropriate transform masks for 
> called and calling numbers.
> 
> If the IP trunk is congested, shouldn't the calls be rerouted to the 
> PSTN anyway? (even though AAR is not set)
> 
> thanks,
>   Zoltan
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