Patent ID: 7103378

Claim:
A communication system comprising: at least one radio base station having voice data processing function, which can communicate with plural mobile radio terminal equipment and said radio base station being connected to a network, wherein said radio base station has call control function and protocol conversion function of converting a protocol between a network protocol and a mobile radio terminal equipment protocol; at least one terminal equipment having voice data processing function, which is connected to said radio base station through said network and said terminal equipment, has an interface for a telephone network and protocol conversion function of converting a protocol between a network protocol and a telephone network protocol; and a communication control device having call control function, which controls communications between said radio base station and said terminal equipment, wherein said communication control device is connected to said radio base station and said terminal equipment through said network, and wherein said communication control device includes communication control means for managing a communication path between said radio base station and said terminal equipment, and wherein said radio base station and said terminal equipment transmits and receives a voice data respectively between them through said network when a communication path between said radio base station and said terminal equipment is established, and wherein said voice data transmitted between said radio base station and said terminal equipment does not pass through said communication control device.