bus and transport hub in use of many departments, such as inspection, passenger and freight, daily conversation is frequent, unified command dispatching emergency requirements, and the communication passenger railway station in our country is still confined to the traditional way conventional wireless intercom radio and simulation, there is call blocking is serious, call waiting time is long, the frequency interference is serious, talk on the phone, not clear signal blind area, more is not to meet the needs of modern district of passenger operation and organization.

The solution described
railway station in railway terminal, intersection, and towns along the JieGuiDian and point of contact, ports, highways, factories, and is handled passenger and cargo transport and places of work, bus terminal is located in the large and medium-sized cities, more is an important part of railway hub, with special passenger line and high-speed rail network was put into operation, traffic increase gradually, new district and major transport hub of passenger operation organization and service pressure is more and more big, the private network digital trunking system can improve passenger station and transport hub and calls the efficiency of the staff working efficiency and ensure the efficient operation organization and orderly, the train operation safety. < br / > KaiLi electronic according to user requirements, combined with the national policy to the private network for analog to digital switching to meet passenger station and transport hub area staff and efficient busy communication requirements for the emergency communication ability, and tailored to a set of DS - 6211 PDT professional small cluster communication system, equipped with network and dispatcher station, and through the base station signal enhancer signal blind area problem.

New KaiLi
PDT DS - 6211 digital professional small cluster system can provide a variety of call function, such as: a calling, group calling, all call, emergency call, PSTN call, such as digital voice clear; Channel dynamic allocation, the call of high efficiency and group; Telecommunication level design, equipment reliability, can satisfy the passenger station and transport hub homework personnel's communication needs, the system can solve the problem of uneven channel busy and interference, and to provide passenger information and job information transmission, priority setting and recording function. System all IP architecture, support for multiple stations interconnected, meet the needs of the system expansion and railway administrations internal Internet stations.

Network topology: