In Session Manager, logged-out missed call information is saved for H.323 and SIP endpoints.
For H.323 endpoints, Communication Manager stores the logged-out missed calls and downloads the Call History logs when the endpoint logs in.
For SIP endpoints, all Session Manager instances associated with a user profile can generate call logs. These call logs are stored in a distributed manner in the Cassandra database across multiple nodes. All Session Manager instances can access the call log from Cassandra. When the primary Session Manager is down, the call history data is retrieved from the Cassandra database running on other Session Manager instances.
To control Call History logging for the SIP user, select or deselect the Enable Centralized Call History check box on the Session Manager Communication Profile screen. The check box is deselected by default (disabled). The maximum number of call logs for each Communication Profile is 100. You cannot configure the maximum number of call logs.
