CIRCUITRY INTERFACE BOARD AND ACCESS EQUIPMENT EQUIPPED THE CIRCUITY INTERFACE BOARD

摘要

A circuitry interface board and access equipment equipped the circuitry interface board; both the circuitry and the circuitry interface board include in the equipment include many function modules; and most important is: the circuitry interface board include at least two PCBs, the PCBs are cascaded and can communication with each other, said function modules are set in the PCB but not added the density of the element of the PCB. This set mode can reduce the cost of the circuitry interface board efficiently.