The growing market for wireless telecommunications services is resulting ina strong movement toward digitizing these services. Currently, three digital wireless standards are specified. Each includes a mobile switching center (MSC) as the centralized network switching and call control entity. The MSC mustbe adaptable to a variety ofnetwork and service environments, and must support a broad range ofsophisticated end-user services. AT&Ts 5ESS® Switch supports the MSC function for two ofthe three digital wireless standards, and is an integral component ofthe AT&T MSC product for the third standard. Reuse ofthe existing hardware platform, designing wireless functionality as incremental extensions ofthe existing software architecture, and support ofintelligent network ON) capabilities onthe 5ESS MSC, results ina uniquely matched solution for providing wireless services ina wide variety ofnetwork environments and applications.