Transfer cutting off

[Stuart C]

Hi all, 

Wonder if someone could help me.  I have an issue where external calls through CUCM across a SIP T to 3rd party IVR.  Call ends up at a Cisco phone.  When the agent hits the transfer button, the call drops.  Message on Cisco phone is "Transfer successful"

Call flow 

External caller == MGCP Gateway (ISDN30) == CUCM == SIPTRUNK == 3rd PARTY IVR == Cisco Phone

My trace files show a disconnect cause of 47 Resource unavailable.  In the traces I see a bye coming from the phone with 47 as the release cause.  I do see some MTP messages before the disconnect.  But I can't pin down why the call fails. It seems to be MTP related....

Attached is the file of my call. Calling from 1582420999 to 2774 in the trace.

[Mohammed al Baqari]

What dtmf method used. Try to change from rtp-nte to mgcp out of band dtmf

[manpreet1.singh@orange.com]

Hi, 

As i read the problem description, if the call gets cut off as soon as the transfer button is hit for the first button, i would expect you also have issues while pressing the call on hold. 

can you recreate the scenario, put the call hold and resume if drops, collect CUCM logs and attach. 

if it does not then recreate the transfer scenario and collect CUCM logs

the traces does not seems to be complete. can you attach the complete files collected from RTMT

Regards

Manpreet Singh

[Stuart C]

Hi, 

Yes issue is apparent when trying to put the call on hold.  Again this only happens on an external call.  When making the same call internally all is working ok.

The call transfer should be shown in the traces attached.  1582482999 to 2774 (IVR) then to 2892 then 2898.

Thanks

[Stuart C · Accepted solution]

Issue appears to be a bug and is with Cisco DE team.

[esther.tan]

Hi, Has this fault being resolved?

I am facing the same problem whereby IVR calls to agent will drop if agent tries to transfer call.  Only happen to calls via IVR. Direct DDI works.

Any bug ID?

Regards

Esther

[manpreet1.singh@orange.com]

Hi Esther,

same question ?

do you hear music on hold?

what if you simply press the hold/resume button ?

would you be able to pull CUCM logs for 5 minutes time frame ?

Regards,

Manpreet Singh

[Stuart C]

What version of CUCM are you on, and is it a 3rd party IVR?