A docking station, which connects a cellular telephone with one or more landline telephones, includes a connection switch configured to detect a condition of at least one landline of a premises and to establish a connection with a landline based on a detected condition, an interface configured to connect...http://www.google.de/patents/US20050143016?utm_source=gb-gplus-sharePatent US20050143016 - Docking station for enabling landline telephones to send/receive calls via a docked mobile telephone
