US Patent 8000686 Extensible phone application

The present invention provides an extensible phone application that uses extensions to interact with other applications executing in a mobile communication device. The extensible phone application is operable to handle wireless communication for the mobile communication device. Another application may interact with the extensible phone application by incorporating an extension. The extensible phone application enables the extension to register with the phone application for receiving a notification associated with an event. In response to the event, the extensible phone application sends the notification to the extension.