As a most basic physical node in network

transmission node machine room（hereinafter referred to as"nodes machine Room"） is not only one of the basic elements for composing communication network

but also is important strategic reserving resources for every service provider.The quantity

stability

space and other issues of nodes machine room will have a significant impact on flexibility

stability

scalability and so on for local transmission network.By analyzing the type of node machine room

the location requirements of each node machine room

this paper suggests the actual operation process on node machine room address selection

which can guide the service provider to choose address of node machine room in real proiect as reference.