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Beginner

DTMF not working between 2 CUCM SIP Trunks

Dears

We have configured 2 SIP trunks on 2 CUCM servers , all calls are working fine except the DTMF ?? any ideas what can enable the DTMF between the SIP Trunks??

Inter-Cluster Trunk (Non-Gatekeeper Controlled) On Both Sides and the Codec is G.711u

Best Regards

13 REPLIES 13
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Collaborator

DTMF not working between 2 CUCM SIP Trunks

Enable MTP on the trunk & it will work.


GP.

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Beginner

DTMF not working between 2 CUCM SIP Trunks

Thanks for your reply , but i tried to enable MTP and didn't solve the case !! any ideas??

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Collaborator

DTMF not working between 2 CUCM SIP Trunks

Could you explain the call flow & on which trunk the MTP was enabled ?


GP.

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Beginner

DTMF not working between 2 CUCM SIP Trunks

trying to call from first CUCM to the second CUCM

I tried to enable the MTP on the first one only ( where the call is orginated) didn't work

I tried to enable the MTP on the second one only ( where the call is terminated) didn't work

also on both didn't work !!

Please advise

Highlighted
Collaborator

DTMF not working between 2 CUCM SIP Trunks

So it appears that the call is between 2 CUCM Clusters connected with Non-GK Controlled ICT ( as mentioned in your intial post ). Where are these SIP trunks connecting to then ?

GP.

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Beginner

Re: DTMF not working between 2 CUCM SIP Trunks

Both CUCM are publishers ( one only for employees and one for call Cener) ,each one has registered phones and we can call phones directly without problems , the only problem is when dialling the IVR hunt pilot which connected and gave us the welcome greetings but we can't select any options .

Highlighted
Collaborator

DTMF not working between 2 CUCM SIP Trunks

Ok, so as I understand following is the issue description.

There are 2 sites A & B. A has CUCM cluster for IPT users & Site B has CUCM Cluster for Contact Center users. These 2 clusters are connected using Non-GK controlled ICT.

Site A users when call Site B IVR, they hear the greeting but DTMF is not recognized hence they are unable to choose between options. Correct ?

1. What are the CUCM, IP IVR or UCCX/UCCE versions ?

2. Are the site B users able to choose options without any issues ?

3. When you said IVR, is it IPIVR/UCCX/CVP, Unity Connection, Unity, CUE or BACD on gateway ?

Please, always give full details of your setup & then ask the query, as it helps you only to get a quick & precise answers.

GP.


Pls rate helpful posts by clicking on stars below the post !!

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Beginner

Re: DTMF not working between 2 CUCM SIP Trunks

Please Find my answers below :

Site A users when call Site B IVR, they hear the greeting but DTMF is not recognized hence they are unable to choose between options. Correct ? Correct

1. What are the CUCM, IP IVR or UCCX/UCCE versions ? CUCM for User 7.1.5.30000-1 , and for Call Center 8.0.3.20000-2 ,

2. Are the site B users able to choose options without any issues ?Yes

3. When you said IVR, is it IPIVR/UCCX/CVP, Unity Connection, Unity, CUE or BACD on gateway ?Media Server (CTIWEB)

also, please note that i have remote branc connected to the user Call manager and they can select IVR options ???

B.R

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Collaborator

DTMF not working between 2 CUCM SIP Trunks

So looks like the Site A MTP resources are not enough ( falling short ) . What type of MTP resources are used at site A i.e. software or hardware ?

Are the MTP resources added properly in MRGL for the users who are accessing the IVR ? You might want to compare the site A user config with remote site user's config to see if you missed anything on MRGL part.

GP.

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Beginner

Re: DTMF not working between 2 CUCM SIP Trunks

I am using software MTP , and the resource are available to the user , ( MTP is listed on the MRGL , and MRGL used by users ).

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Collaborator

Re: DTMF not working between 2 CUCM SIP Trunks

If it's Software MTP & the MRGL is properly configured with user device pools, then try restarting " Cisco IP Voice Media Streaming App " service on Site A CUCM Pub to see if it helps. After the service restart, try enabling MTP again, if it's disabled presently.

GP.

Pls rate helpful posts by clicking on stars below the post !!

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Beginner

Re: DTMF not working between 2 CUCM SIP Trunks

Same

as i mentioned before , we have remote branch connected to CUCM "A" and calls from that branch coming from PSTN can reach the IVR and DTMF worksfin with it . is there anything else that i can try??

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Beginner

DTMF not working between 2 CUCM SIP Trunks

Hi Mohammad,

I am having a similar problem. Did you get this issue resolved ? Can you help by providing your solution ? Thanks.