IVR DTMF not working

[Ceaserx]

Hi

I have a site with a MXE III on version 7 sp1 and they have a CCM with remote IVR. They want to port over to SIP and I have started testing some inbound to the IVR over SIP.

When I do a simple ACD Path with a path interflow dialing list the DTMF tones work perfect over SIP but when testing with a IVR call flow on the CCM the DTMF tones do not work.

There is clearly a big difference when the IVR server gets involved as their are more invites etc. Their current PRI/E1 lines do not have the same issue.

Any other suggestions as I have run out of ideas after trying multiple SIP peer setting etc.

 

[CvdKnijff]

Hi Ceaserx,

i have the same problem, do you have found a solution?

 

[Lundah]

Probably has to do with whatever method the SIP carrier is using to deliver the DTMF tones on the SIP trunks. There's a couple of different methods and your settings need to match what the carrier is sending otherwise the MiVB will never pass the digits on to the IVR.

 

[Ceaserx]

Sorry for the late reply.

Yes I resolved the problem. Our SIP provider's SBC could not communicate with the IP of the IVR server. Once that was resolved the DTMF worked perfectly

 

[CvdKnijff]

Thanks for answers, it's a bug in release 7.1.0.0 upgrade to 7.1.3.1 or 8.0 resolved this problem.