[cisco-voip] No Call Proceeding received for CM to Avaya PBX via TDM/H323 trunk

Justin Steinberg jsteinberg at gmail.com
Wed Aug 1 21:14:53 EDT 2007


Try adding  'no isdn outgoing display-ie' under the serial interface on both
the 3845 & the 2811.

Justin

On 8/1/07, Riley, Andrew <Andrew.Riley at getronics.com> wrote:
>
>  Hi there,
>
> Has anyone had success/experience with connecting an Avaya PBX to a Cisco
> Call Manager via a TDM and H323 link. See topology below. I have seen all
> the Cisco doc's about doing H323 direct to CCM but this is not feasible in
> this particular environment.
>
> IP phone------Cisco CM
> ----mgcp-----3845-----q931------2811-----h323--------Avaya PBX------Phone
>
>                                                                             |
>                                                                        Analog
> Phone
>
> Calls from the analog phone are successful end to the Avaya
> Calls from Avaya to the IP Phone are successful
> Calls from the IP Phone to the Avaya Fail.
>
> Attached are the traces from the 2811 for a failed call. We are seeing the
> h225 setup go out to the Avaya, but the Avaya doesn't respond with a call
> proceeding. The Avaya signal's its phone so it rings but as the 2811 doesn't
> receive CALLPROC h225 times out and the IP Phone gets slow busy tone. The
> strange thing is that the analog phone calling the same pattern work no
> problem.
>
> My suspicion is that the Avaya is dropping the call as it doesn't like
> some information in the IE bits of the h225 setup for a call from the IP
> Phone but as there is less info in the analog call setup it proceeds.  The
> Avaya folk have not been able to provide reason for not sending the CALLPROC
> back.
>
> Any input is much appreciated.
>
> Andrew
>
>
>
> *Andrew Riley
> Technical Consultant - Communication Services
> CCIE # 18285 Voice*
>
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>
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