Profile
· Point-to-point voice ;communication
· Point-to-point video ;call
· Group call
· Emergency call
· High-speed data service
· Short data service
· Status message
· Upload video on the portable handset
· GIS service,
· Preemption of voice control
· Emptive priority call of the dispatcher
· Pre priority call of the dispatcher
· Time-limited call
· Group user status display
· Group name user name display
· Broadcast call
· Call records
· Temporary group call
· Call number display
Product Function
Customized development based on LTE system
PC - based dispatcher adopts wired IP access to LTE system
SIP/RTCP protocol is used between the dispatcher and the core network for control signal interaction
RTP protocol is adopted for media data transmission
Fast call setup: group call setup delay < 300 ms; Preempt call delay < 150 m
Technical Parameters
The station is designed to facilitate efficient communication between fixed personnel in rail transit. Dispatcher station provides the control center dispatcher and train drivers, operating personnel and other wireless users of wireless communication function, at the same time also provide the corresponding call, broadcasting, storage, display, short data transmission, and other functions.
The dispatcher station is designed based on LTE for the realization of reliable, high efficiency wireless communication. This design implements, such as the number of train number call, the train team number call and other functions, in order to satisfy the users simple, fast, safe needs in actual communication.
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