Hi,
We have SIP Trunk between CUCM 12.5 and 3rd party PBX name is Haris
We are facing DTMF problem over this Trunk
I have tried the 3 available options for DTMF on the SIP trunk with no success [No Pref, RFC2833, OOB and RFC2833]
I got the traces and found below
Call to IVR 19666
==================
13467983.009 |13:10:12.496 |AppInfo |setLocalDtmfCaps: supportedDTMFMethod=3, mWantDtmfReception=1, mPeersWantDtmfReceptionFlag=1, mDtmfPreference=3
13467983.010 |13:10:12.496 |AppInfo |SIP DTMF Info: mLocalDtmfCaps...UNSOL=0, KPML=0, Inband=1(())
mEndppointsDtmfCaps...UNSOL=1, KPML=0, Inband=0(()) mDefaultTelephonyEvent=101, mDtmfPreference=3, mMtpAllocated=0
Call to IVR 1555
==================
mLocalDtmfCaps...UNSOL=1, KPML=1, Inband=1(())
mEndppointsDtmfCaps...UNSOL=1, KPML=0, Inband=0(())
mDefaultTelephonyEvent=101, mDtmfPreference=1, mMtpAllocated=0
How can I set CUCM to send DTMF as UNSOL=1 , I think it should work fr 1st trial call to 19666
And why it didn't work on the second call to 1555
I couldn't set the DTMF on the other side on the PBX
Is this requires CUBE ? or MTP resources from a router as I have assigned CUCM MTP with no use ?
Attached Two trace files
Thanks
Haitham
