Previously, the H.323 phones were responsible for maintaining the call logs. As long as the users were logged in to the phone, the phone backed up all call logs. After the user logged out and logged back in, the phone pulled the previously stored call logs. However, these logs did not contain incoming calls that took place while the user was logged out. This behavior led to confusion as all the registered devices did not show the same call logs if the user was logged in to some devices and not others.

From Communication Manager Release 6.3.6, call logs include the incoming calls even when the device is in the logged-out state. This support is available to the latest H.323 endpoints. Communication Manager stores up to 10 entries for the most recent calls for the user. When the user logs back in, Communication Manager sends these log entries to the phone. The H.323 phone reconciles the call logs it receives from Communication Manager with the logs it restores from the backup server. The H.323 phone backs up the merged call logs in the central backup file for later retrieval. The H.323 phones back up the call logs to an HTTP server and load whenever a user logs in.

For more information about this feature, see Avaya Aura® Communication Manager Feature Description and Implementation.