A friend of mine works in telecommunications, is mainly responsible for the optic fibre business of China Railcom. He told me about the trouble that several mere fibers meet when protected at a party recently, I select two to have the introducing to every reader of representatives most from it, hope everybody can reap from the article to some extent, and review the whole course of solving the problem.
The trouble one: SDH whom many kinds of reason cause reply, spend sections of yard by mistake and deal with
The phenomenon is described:
The main road of grade of the province only conveys the network, transmit the route from Chengdu to Yaan, it is a single strand optic fibre of a 2.5G. Make up and convey network to Pu Jiang to get to Yaan for Chengdu, more than 200 kilometers of spans altogether. Chengdu is resurgence ZXSM-10G apparatus, the edition V3.14.012.040220 of top management on this chain; Pu Jiang is an resurgence ZXSM-150/600/2500 ADM