【摘要】 本文从工程设计角度描述了程控交换机集中维护管理系统的硬件构成、软件功能，对于同类系统的设计和实现具有一定的参考价值。更多还原

【Abstract】 This paper describes the hardware block and software function of a SPX center maintenance & administration system in the point of an engineering design. It is of great reference value for the same kind system design and implementation.更多还原