Cassidian, an EADS company, has won the contract to expand the metro coverage of Beijing Government Shared Radio Network. The expansion of the TETRA network will improve the network coverage and provide the perfect communication and service for Beijing metro police to ensure the security of metro operation.

Cassidian will provide 24 TB3 base stations and four TTRX transmitter-receiver units to expand the coverage of the new Beijing metro lines (Line14, Line7, west line of Line15, extension of Line 8 and connection between Line 8 and Changping Line). The delivery and implementation will take place in 2013 and 2014, when all the operational 17 metro lines will be equipped with Cassidian's TETRA system.

Beijing Government Shared Radio Network, also called ‘Beijing JustTop TETRA Network’ is the largest digital trunked network in Asia and the biggest citywide TETRA network in the world, covering Beijing city area, all the venues, all the metro lines, counties, the main highways, important buildings, including 350 base stations, serving about 90,000 subscribers