[cisco-voip] Nortel PBX Integration with Cisco VoIP Gateways - Question

[Jonathan Charles]

Create a preference 2 dial-peer to route the call out to the PSTN... but you
will need a gatekeeper to deny the call and route it out a different
interface.

You might be better off hairpinning it back to the PBX...



Jonathan

On 1/24/07, embeleco <embeleco at gmail.com> wrote:
>
> Sending for the second time.....
>
> On 1/22/07, embeleco <embeleco at gmail.com> wrote:
> >
> > Hi.
> >
> > Currently I have Nortel PBX Option 61 connected to a Cisco VoIP Gateway
> > using a T1/PRI ISDN interface to have calls to another Nortel PBX Option 61
> > connected to another router using ISDN as well. Nortel PBX boxes already had
> > the PSTN Connection (another T1/PRI ISDN).
> >
> > Now we would like to have a failover to the PSTN in case there is no
> > bandwidth available on the network or for some reason the call cannot be
> > completed through the IP network.
> >
> > 1. It is better to do the failover on the Nortel PBX using some sort of
> > least cost routing (hunting) with the VoIP Trunk and the PSTN trunk and with
> > the correct digit manipulation?
> >
> > 2. Or it is better to have the VoIP Router to hairpin the call back to
> > the nortel PBX (as a new call) in order for the PBX to send the call out the
> > PSTN trunk. (in this case the router will do the digit manipulation
> > necessary). I know that this option will consume more DSP resources and
> > channels on the T1/PRI.
> >
> >
> > Any ideas? Suggestions?
> >
> > Thanks,
> >
>
>
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