Patent ID: 6377799
Filing Date: 2002-04-23
Classification: H04W,Y10S

Abstract:
In Internet Protocol (IP)-based Global System for Mobile Communications (GSM) radio telecommunications network having a Mobile Switching Center (MSC) and a non-GSM compliant Media Gateway, a method of providing GSM data services between a GSM mobile terminal and a destination terminal equipment (TE) operating in a circuit-switched network, said method comprising the steps of:implementing an Internet Protocol Shared Interworking Function (IP-SIWF) in the GSM radio telecommunications network; controlling the IP-SIWF from the MSC utilizing a device control protocol; originating a GSM data call from the mobile terminal, said data call carrying a data payload utilizing GSM radio access and radio link protocols; terminating the GSM radio link protocol in the IP-SIWF; replacing the GSM radio access protocol in the IP-SIWF with a media gateway protocol that is compatible with the non-GSM compliant Media Gateway; and transporting the data payload from the IP-SIWF to the non-GSM compliant Media Gateway utilizing the media gateway protocol and a real time protocol (RTP) over a User Datagram Protocol (UDP) and an IP protocol layer.