As the extension and service deployment of the POTS

internet

data and IP phone network backbones in the metropolitan area

metropolitan area network will have the capability to offer subscribers the integrated access to the telecommunications services. In the recent years

China Railcom has accelerated the speed in building up its metropolitan area network around the nation

to provide the access to services and guarantee the variety of access methods. This paper makes a research to the networking scheme of China Railcom metropolitan area network in Shenzhen

and proposes a solution to design the metropolitan area network with the purpose to build up a market-oriented

scalable and multi-services supported metropolitan area network in Shenzhen.