Gte Airfone Incorporated

William E Hogg

Roger E Merel

Gary F Prokop

James C Hand

Paul C Burke

Richard E Skowronski

Mark D Dziersk

Gary S Feutz

Bruce Odessky

A system and method for performing call handoff in a mobile communication system. The system is employed on commercial aircraft and enables calls to be transferred between different traffic service channels in order to continue and/or improve communications. In a conservation handoff scenario, user service channels are transferred between partially utilized traffic service channels resulting in unused traffic service channels that are released, thus freeing more traffic service channels for use by other aircraft. In a seizure handoff scenario, signal quality on one traffic service channel has begun to deteriorate prompting a call handoff wherein a call on the deteriorating traffic service channel is transferred to an unused user service channel on another traffic service channel already in use aboard the aircraft, thus allowing users to continue their calls. In a reservation handoff situation the aircraft equipment responds to a deterioration of signal quality and transfers all calls to another traffic service channel on a different radio base station allowing user's to continue their calls.

Call handoff

A system and method for performing call handoff in a mobile communication system. The system is employed on commercial aircraft and enables cans to be transferred between different traffic service channels in order to continue and/or improve communications. In a conservation handoff scenario, user service channels are transferred between partially utilied traffic service channels resulting in unused traffic service channels that are released, thus freeing more traffic service channels for use by other aircraft. In a seizure handoff scenario, signal quality on one traffic service channel has begun to deteriorate prompting a call handoff wherein a call on the deteriorating traffic service channel is transferred to an unused user service channel on another traffic service channel already in use aboard the aircraft, thus allowing users to continue their calls. In a reservation handoff situation the aircraft equipment responds to a deterioration of signal quality and transfers all calls to another traffic service channel on a different radio base station allowing user's to continue their calls.

Telephone handset

A cord reel assembly is provided which maintains a length of stationary wire and a length of shielded retractable wire around a spool. The assembly dispenses the retractable wire as an attached handset is extended away from the assembly, while the stationary wire is concurrently being wound. A portion of the stationary wire internal to a housing enclosure is unshielded, while a portion extending outside the housing enclosure is shielded. The unshielded stationary wire is shielded by applying conductive paint or electroplating to the housing enclosure, thereby reducing EMI emissions. A spring cover retains a recoil spring and provides a bearing surface against a spindle member. The winding direction of the stationary and retractable wires is chosen, and the stationary wire conductors are arranged with shield ground wires, such that EMI emissions are reduced.

Cord reel assembly

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Warrenville, IL, United States of America

William E Hogg