The call log is stored and maintained locally. With H.323 6.4.0 or later on the 9611G and CM 6.3.6 or later, CM can be configured to allow the 9611G to retrieve a copy of the call log from CM when the user logs in. In all other cases, the 9611 has to be configured with an HTTP server to periodically backup the call logs and then retrieve a copy of the call log when the user logs in.