Patent ID: 7424286

Claim:
A transmitter/receiver system comprising: one or more mobile transmitter/receiver apparatus comprising: a telephone call transmission/reception device that transmits and receives respective audio data via a first carrier of a first frequency band and that receives respective first call origination information via said first carrier; and a call origination information reception device that receives respective second call origination information via a second carrier of a second frequency band that is lower than said first frequency band; and a transmission/reception management apparatus that manages transmission to and reception from at least one of said one or more mobile transmitter/receiver apparatus, said transmission/reception management apparatus comprising: a telephone call management apparatus that governs an exchange, employing said first carrier, of said respective audio data between said at least one of said one or more mobile transmitter/receiver apparatus and at least one other mobile transmitter/receiver apparatus and a communication apparatus connected to said transmission/reception management apparatus; a first call information transmission apparatus that transmits, when a call is made to any one of said one or more mobile transmitter/receiver apparatus, said respective first call origination information via said first carrier; and a second call information transmission apparatus that transmits, when a call is made to said any one of said one or more mobile transmitter/receiver apparatus, said respective second call origination information via said second carrier.