The CMR records store information about the quality of the streamed audio and video of the call.
When Unified Communications Manager places or receives a call, the system generates a CDR record when the call terminates. The system writes the CDR to a flat
file (text file). Inside the Unified Communications Manager, the call control process generates CDR records. The system writes records when significant changes occur to a given call,
such as ending the call, transferring the call, redirecting the call, splitting the call, joining a call, and so forth.
When CMR records are enabled, the number of records that are written varies by type of call and the call scenario. When Diagnostics
are enabled, the device generates CMR records for each call. The system writes one CMR record for each IP phone that is involved
in the call or for each Media Gateway Control Protocol (MGCP) gateway. The system sends these records to EnvProcessCdr where
they get written to flat files.
Note |
For Hold and Resume calls on SCCP devices, multiple CMR Records are generated based on the number of times the call is put
on hold.
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The Unified Communications Manager generates CMR records but does not perform any post processing on the records. The system writes the records to comma-delimited
flat files and periodically passes them to the CDR Repository. The CMR files represent a specific filename format within the
flat file.
Filename Format
The following example shows the full format of the filename: tag_clusterId_nodeId_datetime_seqNumber
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tag—Identifies the type of file, either CDR or CMR.
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clusterId—Identifies the cluster or server where the Unified Communications Manager database exists.
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nodeId—Identifies the node.
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datetime—Specifies UTC time in yyyymmddhhmm format.
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seqnumber—Specifies sequence number.
An example of the filename follows:
Flat File Format
The CMR flat files have the following format:
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Line 1—List of field names in comma separated format.
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Line 2—List of field types in comma separated format.
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Line 3—Data in comma separated format.
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Line 4—Data in comma separated format.
The following example shows a flat file:
Line1-"cmrRecordType","globalCallID_callManagerId","globalCallID_callId","origLegCallIdentifier",...
Line2-INTEGER,INTEGER,INTEGER,INTEGER,...
Line3-1,1,388289,17586046,...
Line4-1,1,388293,17586054,...