[cisco-voip] DTMF Method 0

[Anthony Holloway]

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
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