OTN is based on the wavelength division multiplexing（WDM） technology and the transmission network in the optical layer organization network. OTN network conforms to the trend of broadband

fl at and intelligent network under the framework of ALL IP in the future. At present the main bearing and local wave particle data services

OLT uplink service and all kinds of IP services

how to reasonable use of existing resources

to reduce costs and increase efficiency

the purpose of the construction of new precision system is particularly important

this paper discusses the existing network of local wave system to make effective evaluation.