Patent ID: 6188902
Filing Date: 2001-02-13
Classification: H04B,H04W

Abstract:
A multiple network communication system comprising:a plurality of mobile communication networks and at least one terrestrial communication network, each of the plurality of communication networks being connected to each other via exchanges; anda plurality of terminal devices, including at least a plurality of mobile terminal devices each belonging to a respective one of said plurality of mobile communication networks, and at least one terrestrial communication device belonging to said terrestrial communication network;each of said plurality of terminal devices being capable of communicating with another terminal device via said exchanges,wherein said mobile terminal devices are capable of moving from an area corresponding to the mobile communication network to which said mobile terminal devices belong to an area served by another one of said mobile communication networks; whereinupon originating a call to a mobile terminal device, a terminal device originating said call sends to its associated exchange, in addition to a destination telephone number of said called mobile terminal device, a designated call incoming code specifying a destination mobile communication network on which to attempt to connect to said called mobile terminal device; andsaid associated exchange sends the destination telephone number to the destination mobile communication network designated by said call incoming code to connect said called mobile terminal device with the call originating terminal device via said destination mobile communication network.