A mobile communication device has data/fax capabilities to enable data/fax communications by a connected communication terminal. The mobile communication device includes a system interface that is used in a default mode to connect the phone to a phone accessory. The system interface is also used to connect...http://www.google.de/patents/US6285890?utm_source=gb-gplus-sharePatent US6285890 - Automatic sensing of communication or accessories for mobile terminals
