This Code is developed on the basis of Code for Design of Railway Transportation Cmnmunication （TB 10006-2005） by summarizing the experience obtained in the construction， operation management and equipment maintenance of railway communication project，learning from relevant Chinese and foreign standards，incorporating latest technologies，and extensively soliciting opinions from parties concerned
This Code consists of 21 chapters： General Provisions， Terms and Abbreviations， Communication Lines， T

1 General Provisions
2 Terms and Abbreviations
2．1 Terms
2．2 Abbreviations
3 Communication Lines
3．1 General Requirements
3．2 Type Selection and Setting of， Optical and Electrical Cable
3．3Path Selection of Optical and Electrical Cable
3．4 Laying and Mechanical Protection of Optical and Electrical Cable
3．5 Lightning Protection， Power Line Interference Protection and Earthing
3．6 Splicing and Lead-in of Optical and Electrical Cable
3．7 Optical Cable Monitoring
4 Transmission System
4．1 General Requirements
4．2 SDH System
4．3 OTN System
4．4 Transmission Network Management
5 Access Network
5．1 General Requirements
5．2 Optical Fiber Access Network
5．3 Equipment Requirements
6 Telephone Switching
7 Data Communication Network
7．1 General Requirements
7．2 System Design
7．3 System Function and Performance
7．4 Equipment Requirements
8 Wired Dispatching Communication System
8．1 General Requirements
8．2 System Design
8．3 System Function and Performance
8．4 Telephone Service
8．5 Equipment Requirements
9 Mobile Communication
9．1 GSM-R System
9．2 Station and Yard Wireless Communication System
9．3 Train Tail Information Transmission System
10 Video Conferencing System
10．1 General Requirements
10．2 System Design
10．3 System Function and Performance
10．4 ，Equipment Requirements
11 Telegraph
11．1 General Requirements
11．2 System Design
11．3 System Function and Performance
11．4 Equipment Requirements
12 Integrated Video Surveillance System
12．1 General Requirements
12．2 System Design
12．3 System Function and Performance
12．4 Equipment Requirements
13 Private Emergency Communication
13．1 General Requirements
13．2 System Design
13．3 System Function and Performance
13．4 Tunnel Emergency Telephone
14 Clock Synchronization
14．1 General Requirements
14．2 System Design
14．3 System Function and Performance
14．4 Equipment Requirements
15 Time Synchronization
15．1 General Requirements
15．2 System Design
15．3 System Function and Performance
15．4 Equipment Requirements
16 Generic Cabling System
16．1 General Requirements
16．2 System Design
16．3 Cables and Connectors
17 Power Supply Equipment
17．1 General Requirements
17．2 AC Distribution Equipment
17．3 Rectifier Equipment
17．4 DC Distribution Equipment
17．5 Uninterruptible Power Supply
17．6 Battery
17．7 Cable Selection and Laying
18 Power Supply and Equipment Room Environment Monitoring
18．1 General Requirements
18．2 System Design
18．3 System Function and Performance
18．4 Equipment Requirements
19 Integrated Network Management
20 Equipment Lightning Protection and Earthing
20．1 General Requirements
20．2 Lightning Protection
20．3 Earthing and Equipotential Bonding
21 Operation Environment
21．1 External Power Supply
21．2 Buildings for Communication Operation and Maintenance
Normative References
Words Used for Different Degrees of Strictness