[cisco-voip] AAR vs. Route Lists

[Justin Steinberg]

AAR works in conjunction with CCM Locations bandwidth.  Think two IP
phones located at two remote sites that attempt to dial each other and
exceed the Locations bandwidth.  AAR is invoked and the call is
rerouted out a local PSTN gateway.

http://www.cisco.com/en/US/products/sw/voicesw/ps556/products_administration_guide_chapter09186a00803edabe.html#wp1056007

On 10/2/07, Ahmed Elnagar <aelnagar at act-eg.com> wrote:
>
>
>
>
> Hello;
>
>
>
> I never use the AAR feature before, but something came to my mind. Maybe the
> AAR can achieve the following (that RL cannot):
>
>
>
> When the call is rejected due to not enough bandwidth on the WAN link don't
> send the call through the PSTN.
>
> When the call is rejected due to WAN failure send the call through the PSTN.
>
>
>
> I am not sure of it, I am just assuming.
>
>
>
>
> -----Original Message-----
>  From: cisco-voip-bounces at puck.nether.net
> [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of
> Kelemen Zoltan
>  Sent: Tuesday, October 02, 2007 11:30 AM
>  To: Cisco VoIP
>  Subject: [cisco-voip] AAR vs. Route Lists
>
>
>
> 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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