Chapter 5 IS-95 System Architecture
A wireless system—whether for cellular operation (Band Class 0), i.e., 850-MHz band, or for PCS operation (Band Class 1), i.e., 1.8-GHz band—must support communication with the mobile station and interact with the Public-Switched Telephone Network (PSTN). As the mobile station changes its location during a call, the wireless system must insure that the connection between the mobile station and the PSTN is maintained.
A wireless system consists of discrete logical components. These components may be discrete physical entities or they may be physically located with another logical entity. These functional entities must interact in order to coordinate operation. Such interaction is achieved ...