Also,the paper points it will become a certain trend, that the electric power dispatch and communication network will be linked to IP bandwidth network.

Building up the digital network for dispatch by connecting technology;

Layered dispatch communication network with air gap;

Network organization,interface,signing,numbering and function requirement are discussed for the construction of digital program controlled dispatching switching network in this paper,then we constructcd the Yunnan electric power dispatching telecommunication network.

Currently customary network framework structure and dispatch communication process of GSM-R should be improved,for adapting system of railroad bureau immediate manages station and segment,which was brought forward at Mar.