In order to correctly understand the issue ...few questions
What is the callmanager version that you are running ...?
When did you first notice the problem ?
have you made a test call and comparing the time stamp of the call in CAR (just ot make sure )?
Have you applied DST patches recently ?
what kind of phones are you using ...I mean 7940/60/20 (with phone load )?
Here is small checklist which you can follow to make sure setting are correct
Check the following.
CDR Schedular service should be started and running
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System -> Enterprise parameter
Under the CDR Parameters section Verified these three parameter
CDR Format* = CDRs will be inserted into database.
CDR UNC Path = "\\\CDR>"
Local CDR Path* = C:\Program Files\Cisco\CallDetail
CDR Format* = CDRs will be inserted into database
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Service -> Service Parameter
Selected the publisher and then subscriber.
Verify these service parameter in Both the publisher and subscriber.
under "system" section
CDR Enabled Flag* = "True"
CDR Log Calls with Zero Duration Flag* ="True"
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CDR Insert service should only be started Only on Publisher
On subscriber it should be Stopped
Application->sevicability ->tools ->service activation select the publisher.
Cisco CDR Insert activated in publisher.
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More links
http://www.cisco.com/en/US/products/sw/voicesw/ps556/products_tech_note09186
a0080100566.shtml
CDR Analysis and Reporting
http://www.cisco.com/en/US/customer/products/sw/voicesw/ps556/products_administration_guide_chapter09186a00803f5268.html
