The concept of network control was extended to let digital switches communicate with databases (known as Service Control Points) and signal processing systems (Intelligent Peripherals).
网络控制的概念被扩展到了让数字交换机与数据库（称为服务控制点）和信号处理系统（智能外设）通信。
It adopts two-direction CATV tech and combines with multiplex public exchanging tech, computer processing and on-line, and digital signal and order tech, composing public communication network.
本发明采用双向CAT V技术结合多信道共用交换技术，计算机处理，联网及数字信令技术组成有线公用通信交换网。
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