/mcpDescription Service Parameter Choose True to specify that the call logs are cleared during the Cisco Extension Mobility manual login and logout process. While a user is using the Cisco Extension Mobility service on an IP phone, all calls (placed, received, or missed) appear in a call log and can be retrieved and seen on the IP phone display. To ensure privacy, set the Clear Call Log service parameter to True. This ensures that the call logs are cleared when a user logs out and another user logs in. For extension mobility cross cluster (EMCC), the call log is always cleared when the user logs in or out of a phone. Note Call logs are cleared only during manual login/logout. If a Cisco Extension Mobility logout occurs automatically or any occurrence other than a manual logout, the call logs are not cleared. Clear Call Logs on Intra-cluster EM This parameter sets whether validation occurs on the IP address of the source that is requesting login or logout. If the parameter is set to True, the IP address from which a Cisco Extension Mobility log in or log out request occurs and is validated to ensure that it is trusted. Validation is first performed against the cache for the device that will log in or log out. If the IP address is found in the cache or in the list of trusted IP addresses or is a registered device, the device can log in or log out. If the IP address is not found, the log in or log out attempt is blocked. If the parameter is set to False, the Cisco Extension Mobility log in or log out request is not validated. Validation of IP addresses can affect the time that is required to log in or log out a device, but it offers additional security that prevents unauthorized log in or log out attempts. This function is recommended, especially when used with logins from separate trusted proxy servers for remote devices. Validate IP Address This parameter appears as a text box (the maximum length is 1024 characters). You can enter strings of trusted IP addresses or hostnames which are separated by semicolons, in the text box. IP address ranges and regular expressions are not supported. Trusted List of IPs If the parameter is True, the Cisco Extension Mobility log in and log out operations that use a web proxy are allowed. If the parameter is False, the Cisco Extension Mobility log in and log out requests coming from behind a proxy get rejected. The setting that you select takes effect only if the Validate IP Address parameter specifies true. Allow Proxy Feature Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs 412 Receiving Calls Extension Mobility Service Parameters