主叫号码显示原理与设计

The Principle and Design of Calling Party Number Identifier

分析了主叫号码显示原理及其在多功能电话机中的设计。试验表明 ,主叫号码显示电路能够实现预定功能。随着主叫号码这一业务的进一步展开 。

This paper introduced the principle of calling party number identifier (CID) and its design in the multi_functional telephone. Experiment indicates that the designed circuit achieves the specifications. With the development of CID affairs, it will be widely used for multi_functional telephone with CID.