An end user has an 7945 IP phone, but is unable to launch any of the IP phone applications. A network engineer has confirmed that the device is subscribed to the appropriate applications in Cisco…

The '?' button on the Cisco 7945 is the Help button, which provides context-sensitive help text, not access to IP phone applications.

The Cisco 7945 IP phone has a dedicated globe button labeled 'Services' that opens the Cisco IP Phone Services menu, where subscribed applications (such as weather, directories, or custom XML services) are accessible. This button is the correct and intended method to launch IP phone applications configured in CUCM.

Settings > User Preferences controls personal phone preferences such as ringtones and language, not IP phone application launching.

Settings > Device Configuration provides access to device-level network and protocol settings, not the IP phone services/applications menu.