The detailed view of the CDR based dashlets displays the CDR or CMR data only for the last 30 days.
The call details of the endpoints prior to 30 days is not displayed by the dashlets, however, the aggregation
of CDR or CMR data for the endpoints is available for the time period of one year.
http://www.cisco.com/c/en/us/td/docs/net_mgmt/prime/collaboration/10-0/analytics/guide/Cisco_Prime_Collaboration_Analytics_Guide_10.pdf
HTH
java
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