1. A method for a mobile device to act as a switch between a cellular network and a Personal Area Network (PAN) proximate to the mobile device, the method comprising:sensing one or more devices proximate to a mobile device;
creating the PAN for the one or more devices proximate to the mobile device using a local network;
creating a cellular network session;
using both the local network and the cellular network session, to provide a gateway between the cellular network and the one or more devices in the PAN; and
controlling the PAN,
wherein, during the cellular network session, the mobile device is the only device visible to or directly addressable by the cellular network, and the one or more devices access the cellular network through the mobile device while the mobile device is configured to simultaneously maintain a voice call over a circuit switched network with which the mobile device communicates without use of any of the one or more devices as an intervening device, wherein the mobile device is configured to invite a Media server (MS) or an Application server (AS) into the session.