10-14-2016 08:34 AM - edited 03-17-2019 08:22 AM
We add new 9951 IP Phones in CUCM 10.5.2.13901-2.
In 9951 alone we have DTMF issues, in the same setup with 6921 ip phones we are able send DTMF digits.
active load on 9951 phone - sip9951.9-4-2sr2-2
10-14-2016 09:09 AM
Which type of call flow is being impacted?
If you try calling into something internal like a call handler in Unity Connection or a script on UCCX internally does it work?
Manish
10-14-2016 09:20 AM
ex, if I need login Unity connection, the PIN dtmf is not recognized, via 6921 able to enter pin number.
10-14-2016 09:27 AM
Is it a SIP integration with Unity Connection or SCCP? If SIP, what is the dtmf method configured on the SIP trunk. Can you get the detailed callmanager SDI traces from cucm for a failed dtmf scenario? Please ensure there are proper MTP resources available in MRGL of the SIP trunk
https://supportforums.cisco.com/document/144711/understanding-dtmf-negotiation-and-troubleshooting-sip-trunks
Manish
10-14-2016 09:32 AM
Unity Connection integration with SCCP.
In other IP Phone models DTMF is working in the same setup, the issues is on 9951 IP Phones Model.
10-14-2016 10:00 AM
Hi,
What is the firmware running on the phones? Also, check the bug below:
https://quickview.cloudapps.cisco.com/quickview/bug/CSCts24165
Aseem
(Please rate if useful)
10-14-2016 10:19 AM
We are running the below CUCM and Firmware for 9951, could please let me know this version is affected by BUG.
CUCM Version - 10.5.2.13901-2
active load on phone - sip9951.9-4-2sr2-2.
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