The paper discusses the characteristics of next generation services,and analyzes its development barriers and cut-in points.Broadbandservices that NGN offers ha
On September 25 2003, ZTE Corporation, thelargest listed telecom equipment manufacturer inChina, and Microsoft(China)Co. Ltd., the globalleading software suppli
1 GSM-WLL Technology1.1 GSM-WLL System ArchitectureAWLL (Wireless Local Loop)is a radioaccess system for users to access PSTN(Public Switched Telephone Network)