GB/T 28181-2022 Technical requirements for information transport, switch and control in video surveillance network system for public security
1 Scope
This standard specifies the peer-to-peer networking structure of video surveillance network system for public security (hereinafter referred to as network system), the basic requirements and security requirements for transmission, switch and control, as well as the technical requirements for control, transmission process and protocol interface.
This standard is applicable to the scheme design, system testing and acceptance of video surveillance network system for public security, as well as the research and development and production of related devices.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB/T 2260-2007 Codes for the administrative divisions of the People's Republic of China
GB 2312 Code of Chinese graphic character set for information interchange - Primary set
GB/T 2659-2000 Codes for the representation of names of countries and regions
GB/T 7408-2005 Data elements and interchange formats - Information interchange - Representation of dates and times
GB/T 25724-2010 Technical specification of surveillance video and audio coding
ISO/IEC 13818-1: 2000 Information technology - Generic coding of moving pictures and associated audio information - Part 1: Systems
ISO/IEC 14496-2: 2004 Information technology - Coding of audio-visual objects - Part 2: Visual
ISO/IEC 14496-2: 2004/Amd.2: 2005 Information technology - Coding of audio-visual objects - Part 2: Visual (Technical Corrigendum 2)
ISO/IEC 14496-4: 2004 Information technology - Coding of audio-visual objects - Part 4: Conformance testing (available in English only)
ISO/IEC 14496-4: 2004/Amd.10: 2005 Information technology - Coding of audio-visual objects - Part 4: Conformance testing / Amendment 10: Conformance extensions for simple profile levels 4a and 5
ISO/IEC 14496-5: 2001 Information technology - Coding of audio - Part 5: Referenced software
ITU-T Rec.G.711-1988 Pulse code modulation (PCM) of voice frequencies
ITU-T Rec.G.722.1-1999 A new low-complexity 14 kHz audio coding standard
ITU-T Rec.G.723.1-1996 Dual rate speech coder for multimedia communications transmitting at 5.3 and 6.3 kbit/s
ITU-T Rec.G.729-1996 Coding of speech at 8 kbit/s using conjugate-structure algebraic-code-excited linear prediction (CS-ACELP)
ITU-T Rec.H.264-2005 Advanced video coding for generic audiovisual services
ITU-T Rec.H.264.1-2005 Conformance specification for H.264 advanced video coding
IETF RFC 2030 Simple network time protocol (SNTP) version 4 for IPv4, IPv6 and OSI
IETF RFC 2250 RTP Payload Format for MPEG1/MPEG2 Video
IETF RFC 2326-1998 (RTSP) Real Time Streaming Protocol
IETF RFC 2327 SDP: Session Description Protocol
IETF RFC 2976 The SIPINFO Method
IETF RFC 3016 RTP Payload Format for MPEG-4 Audio/Visual Streams
IETF RFC 3261-2002 SIP: Session Initiation Protocol
IETF RFC 3265 Session Initiation Protocol (SIP): Specific Event Notification
IETF RFC 3280 Internet X.509 Public Key Infrastructure Certificate and Certificate Revocation List (CRL) Profile
IETF RFC 3428 Session Initiation Protocol (SIP) Extension for Instant Messaging
IETF RFC 3550 RTP: A Transport Protocol for Real-Time Applications
IETF RFC 3551-2003 RTP Profile for Audio and Video Conferences with Minimal Control
IETF RFC 3725 Best Current Practices for Third Party Call Control (3pcc) in the Session Initiation Protocol (SIP)
IETF RFC 3984 RTP Payload Format for H.264 Video
IETF RFC4566-2006 Session Description Protocol
IETF RFC 4571 Framing Real-time Transport Protocol (RTP) and RTP Control Protocol (RTCP) Packets over Connection-Oriented Transport
3 Terms, definitions and abbreviations
3.1 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1.1
video surveillance network system for public security
comprehensive network system that is built with the purpose of maintaining national security and social stability, preventing and combating illegal and criminal activities, by comprehensively applying audio and video surveillance, communications, computer networks, system integration and other technologies, and has the functions of information collection, transmission, switch, control, display, storage and processing, and can achieve peer-to-peer networking, intercommunication and mutual control between different devices and systems
3.1.2
data of network system
information transmitted, switched, and controlled within the network system, mainly including alarm information (analog switch alarm and data protocol alarm), video information (analog video signal and digital video signal), audio information (analog audio signal and digital audio signal), device control information (serial port data and IP network data), device management information (serial port data and IP network data), etc.
3.1.3
front-end device
device for information collection, encoding/processing, storage, transmission, and security control installed at the surveillance site in the network system
3.1.4
surveillance site
location or place where front-end device is installed or surveilled
3.1.5
surveillance center
specific information collection, processing and sharing nodes within the network system
Note: In the surveillance center, the surveillance management personnel centrally manage and control the network system, and use and dispose of the surveillance information.
3.1.6
user terminal
client device registered and authorized by the network system that have operational needs for data and/or devices within the system
3.1.7
digital access
access method in which the front-end device or regional surveillance alarm system transmits digital video and audio signals to the surveillance center through a digital transmission channel
Note: Including the access mode in which the analog video and audio signals of the front-end analog camera are converted into digital video and audio signals through DVR, DVS and other transcoding device and then transmitted to the surveillance center through digital transmission channels.
3.1.8
analog access
access method in which the front-end device or regional surveillance alarm system transmits analog audio and video signals to the surveillance center through analog transmission channel
3.1.9
analog and digital surveillance system
surveillance system that uses both analog and digital signal control and processing methods
3.1.10
digital surveillance system
surveillance system that only has digital signal control and processing methods
3.1.11
session initiation protocol; SIP
framework protocol for multi-party multimedia communication developed by the Internet Engineering Task Force (IETF)
Note: It is a text-based application layer control protocol, independent of the underlying transmission protocol, and is used to establish, modify and terminate two or more multimedia sessions on IP networks.
3.1.12
session control
process of establishing, modifying, or ending communication between one or more participants
3.1.13
SIP surveillance realm
surveillance network that supports the communication protocol specified in this standard, generally consisting of a SIP server and surveillance resources, user terminals, networks, etc. registered on the SIP server
3.1.14
non-SIP surveillance realm
surveillance network composed of surveillance resources, user terminals, networks, etc. that do not support the communication protocols specified in this standard, including analog access device, digital access device that does not support the communication protocol specified in this standard, analog and digital surveillance system, and digital surveillance system that does not support the SIP protocol specified in this standard
Foreword
1 Scope
2 Normative references
3 Terms, definitions and abbreviations
3.1 Terms and definitions
3.2 Abbreviations
4 Peer-to-peer networking structure
4.1 Peer-to-peer networking of SIP surveillance realm
4.2 Peer-to-peer networking structure between SIP surveillance realm and non-SIP surveillance realm
4.3 Communication protocol structure of network system
5 Transmission requirements
5.1 Network transmission protocol requirements
5.2 Media transmission protocol requirements
5.3 Information transmission delay time
5.4 Network transmission bandwidth
5.5 Network transmission quality
5.6 Video frame rate
6 Switch requirements
6.1 Uniform encoding rules
6.2 Media compression codec
6.3 Media storage and encapsulation format
6.4 SDP definition
6.5 Conversion of network transmission protocol
6.6 Conversion of control protocol
6.7 Conversion of media transmission protocol
6.8 Conversion of media data format
6.9 Data switch with other systems
6.10 Signaling character set
7 Control requirements
7.1 Registration
7.2 Real-time video and audio on demand
7.3 Device control
7.4 Alarm event notification and distribution
7.5 Device information query
7.6 Status information submission
7.7 Retrieval of historical video and audio file
7.8 Playback of historical video and audio
7.9 Download of historical video and audio file
7.10 Network timing
7.11 Subscriptions and notifications
7.12 Voice broadcast and voice intercom
8 Security requirements for transmission, switch and control
8.1 Device identity authentication
8.2 Data encryption
8.3 SIP signaling authentication
8.4 Data integrity protection
8.5 Access control
9 Control, transmission process and protocol interface
9.1 Registration and deregistration
9.2 Real-time video and audio on demand
9.3 Device control
9.4 Alarm event notification and distribution
9.5 Network device information query
9.6 Status information submission
9.7 Device video and audio file retrieval
9.8 Playback of historical video and audio
9.9 Video and audio file download
9.10 Time calibration
9.11 Subscriptions and notifications
9.12 Voice broadcast and voice intercom
Annex A (Normative) Networked system control description protocol (MANSCDP) command set
Annex B (Normative) Network system real-time streaming protocol (MANSRTSP) command set
Annex C (Normative) Video and audio data encapsulation based on RTP
Annex D (Normative) Unified encoding rules
Annex E (Normative) Technical requirements for video and audio encoding/decoding
Annex F (Normative) SDP definition
Annex G (Normative) Message format of the interface between the network system and other systems
Annex H (Normative) Digital digest signaling authentication process and method
Annex I (Normative) Certificate format and certificate revocation list format
Annex J (Normative) Signaling message demonstration
Annex K (Normative) Subject header field definition
Annex L (Normative) Transmission of video and audio media based on TCP
Annex M (Normative) Media streaming keep-alive mechanism
Annex N (Normative) Multiple-response message transmission
Annex O (Normative) Example explanation of catalog query response
Annex P (Normative) Inter-domain catalog subscription notification
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