Monitoring in communication system with wireless trunk

摘要: A communication system having a wireless trunk for connecting multiple phone lines over links to cellular network comprises central telephone switch, such as private branch exchange or key system, connected through one more access unit. The unit preferably separate subscriber interface each line from the switch. collects data of interfaces, formats into format compatible with an over-the-air protocol, and transmits information channels base station. thereby connects calls received switch's network. controller within interfaces radio transceiver, assists in conversion suitable transmission. also distributing converting Calls may be selectively routed by switch landlines, instead, unit, bypassing landlines.