How to read CUCM SDI Trace?

Dear experts,

Has anybody ever seen the detail explanation of the following parameters on CUCM SDI Trace? I could not find them on CCO.

CLID
NID
CT
IP
DEV
LVL
MASK

Especially I would like to know what "CT" parameter means, because now I face FAX call issue in real environment and need to isolate the particular call logs from other calls' logs, and I thought CT could be identifier of each call.

This is just a sample of CUCM SDI Trace,

------- 8< ( snip ) -------
08/22/2010 13:17:15.318 CCM|star_CcNotifyReq - bmask=0x100000.|<CLID::StandAloneCluster><NID::SPCCM1><CT::2,100,65,1.4476672><IP::10.12.13.205><DEV::SEP001EF7C42882><LVL::State Transition><MASK::0020>
---------------------------

Best regards,

Achi

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Received on Fri Aug 27 2010 - 03:21:29 ART