Cellular Service Access Package
Introduction Demand for cellular phone service has grown exponentially in recent years. Dataquest forecasts that the number of installed cell sites in the United States alone will grow to over 65,000 by 1999 — an average of 7,500 per year. The increase in demand for cellular service is driving a need for a strong cellular equipment infrastructure. General DataComm's Cellular Service Access Package (CSAP) is a key component for cell site systems of the major cellular infrastructure equipment manufacturers. The CSAP provides an SNMP-managed interface between base station equipment and the T1 leased line telecommunications network. Typical Cellular Network Structure In a typical cellular network, switching centers communicate with cell sites and other switching centers through terrestrial T1 leased line circuits or, when required, microwave links (Figure 1). Cellular phones dial into a cell site and calls are passed along to land-based phone lines through the public switched telephone network (PSTN) or to other cellular phones via the closest cell site. Both cell sites and switching centers house, among other transmission equipment, either T1 DSU/CSUs or T1 CSUs.
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