[cisco-voip] DTMF Method 0

[Chris Ward (chrward)]

Should have noted, the defect has to do with negotiating OOB and 2833 in the same call with a SIP trunk that has “no preference” selected as its DTMF method. You could try and select a preference and see if it resolved it. But again, we need your version to confirm.

+Chris
Unity Connection TME

From: cisco-voip [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Chris Ward (chrward)
Sent: Thursday, May 23, 2013 9:50 AM
To: Anthony Holloway; Cisco VoIP Group
Subject: Re: [cisco-voip] DTMF Method 0

Anthony,

For issues like these, the call flow and devices involved in the call flow are crucial. On a quick internal search, I found CSCuc80321 with the same error/warning. We would need your version too.

+Chris
Unity Connection TME

From: cisco-voip [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Anthony Holloway
Sent: Thursday, May 23, 2013 12:26 AM
To: Cisco VoIP Group
Subject: [cisco-voip] DTMF Method 0

All,
The smaller picture

I have the following two lines from a CCM trace I pulled:
00:06:11.643 |//SIP/SIPCdpc(8,74,1872820)/ci=146637572/ccbId=85511580/scbId=0/star_CcUserInfoReq: Outbound DTMF method selected is 0. Digit=1 and isMTPPassingThru2833=0|5,200,21,1.12763334^[REDACTED]^RCP5143F0107
00:06:11.643 |//SIP/SIPCdpc(8,74,1872820)/ci=146637572/ccbId=85511580/scbId=0/star_CcUserInfoReq: Outbound DTMF method not supported (0)|5,200,21,1.12763334^[REDACTED]^RCP5143F0107

The log states that this method is not supported, but what is the method exactly?

The bigger picture

My Mobile Agent Connect Tone feature is half working, and I can see DTMF digits 1 and 2 being sent in the Agent's direction, however, the Agent is only hearing the second tone.  I have confirmed this with the above trace lines showing that the first tone fails due to unsupported reasons, also the below additional trace lines showing the second tone being sent via a different method and succeeding, and finally, a wireshark capture which only shows the digit 2 hitting the wire as RTP-NTE (not shared).
00:06:11.905 |//SIP/SIPCdpc(8,74,1872820)/ci=146637572/ccbId=85511580/scbId=0/star_CcUserInfoReq: Outbound DTMF method selected is 2. Digit=2 and isMTPPassingThru2833=0|5,200,21,1.12763334^[REDACTED]^RCP5143F0107
00:06:11.905 |//SIP/SIPCdpc(8,74,1872820)/ci=146637572/ccbId=85511580/scbId=0/sendDtmfVia2833: sending sipOutgoingDTMFTone Tone 2 for digit 2.|5,200,21,1.12763334^[REDACTED]^RCP5143F0107

If I could figure out the method number to name mapping, that would help me understand why method 0 is not supported while method 2 is.

Thanks for your help.

Anthony Holloway
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://puck.nether.net/pipermail/cisco-voip/attachments/20130523/7dd177ee/attachment.html>