电话机免提通话集成电路的原理与故障分析

The Feature and Analysis of Disorder of Hand-free IC in Telephone Set

在介绍电话机免提通话电路的基础上，以最为常见 的通用免提通话集成电路为例，简述其工作原理及故障分析.

On the base of introduction about hand free cirvuit in telephone set ,the paper intends to describe the working theory and the analy sis of disorder taking the hand free IC for example.