Shenzhen Metro has used TETRA communication since 2004 in line #1. Shenzhen is the first city in China that interconnect TETRA systems between different metro companies and their metro lines. Whole solution enables seamless communication along five lines, offering full TETRA functionality as users roam from one line to another. Virtual private network (VPN) functions supported by the system enable each line to manage its own subscribers and talk groups separately. All group and individual calls can be recorded and held centrally.
The Shenzhen Metro is the subway and underground system for the city of Shenzhen in Guangdong province, China. The system opened on 28 December 2004, making Shenzhen the sixth city in mainland China to have a subway.