Patent ID: 7551920

Claim:
A method of activating call forwarding for a mobile station, comprising the steps of: monitoring a measure of received signal strength at said mobile station, the measure of received signal strength being of a signal transmitted between a base transceiver station of a cellular wireless telephone network and the mobile station; automatically transmitting a first feature code from said mobile station to a wireless network when said monitored measure of received signal strength falls below a threshold level, said first feature code activating call forwarding for said mobile station such that incoming calls are directed to a separate device associated with a previously programmed directory number; continuing to monitor signal strength of a signal transmitted between the base transceiver station and the mobile station at said mobile station during a period when call forwarding is activated; and automatically transmitting a second feature code from said mobile station to a wireless network when said signal strength rises above said threshold level, said second feature code deactivating said call forwarding.