Data sampling and processing of the Caller-ID telephone with USB Interface

The electronic equipment used is based on the Call-ID technology.The data of the Call-ID carried on by the telephone circuit is decoded by the FSK decoding chip of Motorola.Then,data are collected and stored by using the AT89C2051 MCU,data transmission by the modularized USB device which is controlled by the DLL interface function.Moreover,it uses the interface function to separate the data from the Caller-ID package.The equipment has the functions of collection,analysis and management of the CID data which use the interface function to transmit the data.Therefore,the interface function can also be edited by such as programming languages VC,VB or Delphi.