By introducing the structure and function of testing unit, this paper makes user understand the theory of the system further, and provides guidance to the operation and maintenance.

通过介绍测试装置的组成和功能，让使用者从理论上进一步了解该系统，以指导该装置操作和维护工作。

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The system is composed of four function parts:vehicle inspection, system maintenance, inspection operation management and vehicle technical management.

系统由车辆检测、系统维护、检测业务管理和车辆技术管理四大功能模块组成。

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The structure, operation principles and major function of concentrated supervision and maintenance system for signaling network of telecom support net-work are presented.

介绍电信支撑网信令网集中监测维护系统的结构、工作原理以及主要功能。

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