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长途光缆干线工程设计中的一些问题（下）刘涛七、辅助系统一个完整的长途光缆通信干线系统，不仅要有稳定可靠的光传输系统，还要有完善的公务联络系统和监控系统，以保证系统稳定可靠地运行和便于维护。因此，长途光缆通信干线的公务联络系统和监控系统，应满足以下要求...
Some Problems in the Design of Long-distance Optical Cable Trunk Lines (Part Two) Liu Tao VII. Auxiliary System A complete long-distance optical fiber communication trunk system not only needs a stable and reliable optical transmission system but also has a perfect system of official contact and monitoring to ensure The system operates stably and reliably and is easy to maintain. Therefore, the official liaison system and monitoring system of long-distance optical fiber communication trunk should meet the following requirements ...