Patent ID: 6073018
Filing Date: 2000-06-06
Classification: H04Q

Abstract:
A wireless communications system connected to a digital network through a plurality of trunks, the plurality of trunks having a first transfer capability and a second transfer capability, said system comprising:a message center for receiving a call set-up message including a request for a call connection in accordance with one of said first and second transfer capabilities; andan interface unit for determining the availability of the plurality of trunks having said first and second transfer capabilities, respectively, and mapping messages between said wireless communication system and the digital network in response to said trunk availability and said request for the call connection in the call request message;terminal equipment;a base station system for communicating with the terminal equipment over an air interface;wherein said message center is connected to the base station system and the digital network, and wherein said message center includes the interface unit;wherein the terminal equipment transmits the call set-up message and request for the call connection; andwherein the first transfer capability is unrestricted transfer capability and the second transfer capability is restricted transfer capability.