H323 Gateway Intermittent MOH Silence

[dmosher35]

We are using a 3925 router - c3900-universalk9-mz.SPA.150-1.M4.bin - as an H323 gateway with 2 PRI's. We have a PUB and a SUB running -

System version: 8.5.1.11900-21 When we place people on hold we get MOH very intermittently. Out of 10 calls 8 might get MOH and 2 get silence. I have checked codecs (all calls G711), I have restarted IPMediaStreaming. The weird thing is that some calls work and some do not. We cannot isolate any factors to be the same or possible causes. I uploaded the voice portion of the router to see if it helps. Thanks for any help.

Thanks,

Donnie

[ronpatel]

Hi

Are you using. Multicast MOH or unicast MOH. Also Are you using MOH stream from Router's flash or you are using MOH stream coming on CUCM.

Regards

Ronak patel

[rcordeiro]

Hi,

I have the same problem.

Did you solve it?

Regards,

[dmosher35]

Yes. I looked through the bug toolkit and found SEVERAL of the IOS revisions had issues with H323. I changed the gateway to MGCP and the issue has gone away.

[rcordeiro]

Thanks,

MGCP is not an option for me, but I think I managed to find a workaround, testing it right now:

http://tools.cisco.com/Support/BugToolKit/search/getBugDetails.do?method=fetchBugDetails&bugId=CSCtl21854

Regards

[ruimartins1000]

HEllo,

I had the same issue. Check the BUG ID. My IOS version is 15.0(1)M4 on a Cisco 2911. The affected IOS version described on the Bug ID.

I've made the Option2 Workaround and the issue got solved.

Thanks for the info.

Rui

[armin.wagenfuehr]

same issue choose option 2.

THX

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