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Cisco IP Telephony Troubleshooting Guide for Cisco CallManager Release 3.0(1)
© 2000 Cisco Systems, Inc. 88
Call Management Records Logged By Call Type
Each normal call between two Cisco IP Phones logs exactly two CMR records. Each call CMR
record contains all fields identified above. When supplementary services are involved in a call,
more than one record may be written. This section describes when diagnostic records are written
for different call types in the system.
Normal Calls
Normal calls log exactly two CMR records per call, one for each phone involved in the call.
Currently only Cisco IP Phones and MGCP gateways are capable of responding to the diagnostic
information request. All fields will contain valid information.
Abandoned Calls
If the call was abandoned (such as when a phone is taken off-hook and placed back on hook), all
fields related to streaming data will be blank (zero). This is because no streaming connection was
established, and therefore no data was transferred. All records with blank fields will not be
logged if the “CdrLogCallsWithZeroDurationFlag” is disabled.
Forwarded Calls
The call records for forwarded calls will be the same as those for normal calls.
Calls With Busy or Bad Destinations
In the normal case, only records that represent calls that were actually connected will be logged.
In order to log calls with bad destinations, you must enable
“CdrLogCallsWithZeroDurationFlag.” If it is enabled, then all calls will be logged including the
case where the user goes off-hook and then on-hook again.
If the calls are logged, they will be logged as normal calls with all relevant fields containing data.
There will only be one record per call since the calls were never connected to a destination. The
record will be for the originator of the call.