First of all, what you said is not very clear. I generally understand whether A/bilibili only uses one set of transmission equipment to solve the communication problem between two stations.

In addition, it is not clear what kind of service interface it is. If it is 2M type, if SDH equipment does not need to be transmitted, it only needs to extend the port to Station A between station A and station A through optical cat and coordinated transfer, and then open it to the southern network switching station through transmission.

If you have detailed instructions, you can consult me again.

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