Author Topic: SIP Forwarding DTMF Issue  (Read 1477 times)

Offline Tech Electronics

  • Global Moderator
  • Hero Member
  • *****
  • Posts: 2983
  • Country: us
  • Karma: +89/-1
    • View Profile
SIP Forwarding DTMF Issue
« on: May 26, 2021, 03:08:53 PM »
Guys,

We have an issue where a call comes in to the System and then gets sent back out to an 8xx number. When the callers get the IVR at the 8xx number it is not recognizing DTMF, but it was at the NuPoint.

Working with the SIP Provider and getting packet captures, we don't have an MBG, they are saying that the second call, Forwarded, going out to the 8xx number is not putting any SDP in the message and therefor they are sending it out as an In-Band DTMF call instead of Out-Of-Band.

Does anyone know how to solve this problem as I already have Send SDP in the Initial INVITE set to yes as that was a requirement originally?

Thanks,

TE


Offline nikolas

  • New Member
  • *
  • Posts: 1
  • Karma: +0/-0
    • View Profile
Re: SIP Forwarding DTMF Issue
« Reply #1 on: March 11, 2024, 09:28:37 AM »
Hello everyone, same issue here. Having an IVR implemented on NuPoint with MiVB ICP3300. When incoming DTMFs are sent with in-band method, NuPoint does not recognize them. RFC4733 works just fine.

Any idea on that?


 

Sitemap 1 2 3 4 5 6 7 8 9 10