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GB/T 28181-2016 English PDF (GBT28181-2016)

GB/T 28181-2016 English PDF (GBT28181-2016)

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GB/T 28181-2016: Technical requirements for information transport, switch and control in video surveillance network system for public security

This standard specifies the basic requirements and security requirements for the interconnection structure, transmission, exchange, control in video surveillance network system for public security (hereinafter referred to as the network system), as well as the technical requirements for control, transmission processes and protocol interfaces. This standard applies to the scheme design, system testing, acceptance of video surveillance network system for public security, as well as the development and production of related device.
GB/T 28181-2016
GB
NATIONAL STANDARD OF THE
PEOPLE REPUBLIC OF CHINA
ICS 13.310
A 91
Replacing GB/T 28181-2011
Technical requirements for information transport,
switch and control in video surveillance network
system for public security
ISSUED ON: JULY 12, 2016
IMPLEMENTED ON: AUGUST 01, 2016
Issued by: General Administration of Quality Supervision, Inspection and Quarantine;
Standardization Administration of PRC.
Table of Contents
Foreword ... 5
1 Scope ... 8
2 Normative references ... 8
3 Terms and definitions, abbreviations ... 10
3.1 Terms and definitions ... 10
3.2 Abbreviations ... 16
4 Interconnection structure ... 18
4.1 Interconnection structure of SIP surveillance domain ... 18
4.2 The interconnection structure of SIP surveillance domain and non-SIP surveillance domain... 21
4.3 Communication protocol structure of networking system ... 23
5 Transmission requirements ... 25
5.1 Network transmission protocol requirements ... 25
5.2 Media transmission protocol requirements ... 25
5.3 Information transmission delay time ... 25
5.4 Network transmission bandwidth ... 25
5.5 Network transmission quality ... 26
5.6 Video frame rate ... 26
6 Exchange requirements ... 26
6.1 Uniform coding rules ... 26
6.2 Media compression codec... 27
6.3 Media storage encapsulation format ... 27
6.4 SDP definition ... 27
6.5 Conversion of network transmission protocol ... 27
6.6 Conversion of control protocol ... 28
6.7 Conversion of media transmission protocol ... 28
6.8 Conversion of media data format ... 28
6.9 Data exchange with other systems ... 28
6.10 Signaling character set ... 28
7 Control requirements ... 28
7.1 Registration ... 28
7.2 Real-time video-audio on-demand ... 29
7.3 Device control ... 29
7.4 Notification and distribution of alarm events ... 29
7.5 Device information query... 29
7.6 Status information report ... 30
7.7 Retrieval of historical video-audio files ... 30
7.8 Playback of historical video-audio ... 30
7.9 Download of historical video-audio files ... 30
7.10 Network timing... 31
7.11 Subscription and notification ... 31
7.12 Voice broadcast and voice intercom ... 31
8 Requirements for transmission, exchange, control security ... 31
8.1 Device identity authentication... 31
8.2 Data encryption ... 32
8.3 SIP signaling authentication ... 32
8.4 Data integrity protection ... 32
8.5 Access control ... 33
9 Control, transmission process and protocol interface ... 33
9.1 Registration and cancellation ... 33
9.2 Real-time video-audio on-demand ... 37
9.3 Device control ... 44
9.4 Notification and distribution of alarm events ... 47
9.5 Network device information query ... 49
9.6 Status information report ... 55
9.7 Device video-audio file retrieval ... 57
9.8 Playback of historical video-audio ... 58
9.9 Download of video-audio file ... 67
9.10 Timing ... 76
9.11 Subscription and notification ... 76
9.12 Voice broadcast and voice intercom ... 81
Appendix A (Normative) Command set of monitoring and alarming network
system control description protocol (MANSCDP) ... 90
Appendix B (Normative) Command set of monitoring and networking system
real-time streaming protocol (MANSRTSP) command set ... 138
Appendix C (Normative) RTP-based video-audio data encapsulation ... 142 Appendix D (Normative) Uniform coding rules ... 146
Appendix E (Normative) Video-audio coding/decoding technical requirements ... 151
Appendix F (Normative) SDP definition ... 160
Appendix G (Normative) Message format for the interface between networked systems and other systems... 167
Appendix H (Normative) Digital digest signaling authentication process and method ... 185
Appendix I (Normative) Certificate format and certificate revocation list format ... 188
Appendix J (Normative) Signaling message demonstration ... 192
Appendix K (Normative) Definition of subject header field ... 327
Appendix L (Normative) Video-audio media transmission based on TCP
protocol ... 328
Appendix M (Normative) Media stream keep-alive mechanism ... 329
Appendix N (Normative) Multi-response message transmission ... 330
Appendix O (Normative) Description of example of catalog query responses ... 331
Appendix P (Normative) Notification of inter-domain catalog subscription ... 336 References ... 344
Technical requirements for information transport,
switch and control in video surveillance network
system for public security
1 Scope
This standard specifies the basic requirements and security requirements for the interconnection structure, transmission, exchange, control in video surveillance network system for public security (hereinafter referred to as the network system), as well as the technical requirements for control, transmission processes and protocol interfaces.
This standard applies to the scheme design, system testing, acceptance of video surveillance network system for public security, as well as the
development and production of related device.
2 Normative references
The following documents are essential to the application of this document. For the dated documents, only the versions with the dates indicated are applicable to this document; for the undated documents, only the latest version (including all the amendments) is applicable to this standard.
GB/T 2260-2007 Codes for the administrative divisions of the Peoples
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-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 (available in English only; Technical Corrigendum 10)
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 H series: Audio, video and multimedia systems -
Audio and video service basics - Active video coding: Advanced video
coding for generic audio visual services
ITU-TRec.H.264.1-2005 H series: Audio, video and multimedia systems -
Audio and video service basics - Active video coding: 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 SIP INFO Method
IETF RFC 3016 RTP Payload Format for MPEG-4 Audio/Visual Streams
IETF RFC 3261-2002 SIP: Session Initiation Protocol
which is converted by DVR, DVS and other transcoding device from the analog video-audio signal of the front-end analog camera, to the surveillance center through the digital transmission channel.
3.1.8
Analog access
The access method of the front-end device or regional surveillance alarm system transmitting analog video-audio signals to the surveillance center through the analog transmission channel.
3.1.9
Analog and digital surveillance system
The surveillance systems which have both analog and digital signal control and processing methods.
3.1.10
Digital surveillance system
The surveillance system which has only the digital signal control and
processing methods.
3.1.11
Session initiation protocol; SIP
A framework protocol for multi-party multimedia communication formulated by the Internet Engineering Task Force.
Note: It is a text-based application layer control protocol, independent of the underlying transmission protocol, used to establish, modify, terminate two-party or multi-party multimedia sessions on the IP network. Internet Engineering Task Force, namely IETF.
3.1.12
Session control
The process of establishing, modifying, or ending communication between one or more participants.
3.1.13
SIP surveillance realm
A request message may be transmitted through several proxy servers, each proxy server determines the route independently; the response message is transmitted in the opposite direction of the request message.
3.1.19
Register server
The SIP logical entity as specified by IETF RFC 3261, which is a functional server that receives registration requests, saves the information carried in the requests, provides location services in the domain.
3.1.20
Redirect server
SIP logical entity specified by IETF RFC 3261, which is responsible for planning SIP call routing. It tells the caller the next hop address information it has obtained, so that the caller sends a request directly to the next hop based on this address, then the redirect server exits the call process. 3.1.21
Back-to-back user agent
SIP logical entity as specified by IETF RFC 3261, which acts as a user agent server (UAS) to receive the request message and process the message. At the same time, in order to determine how to respond to the request message, it also acts as a user agent client (UAC) to send the request message.
Note: The difference between a back-to-back user agent (B2BUA) and a proxy server is that B2BUA needs to maintain a conversation state it creates. 3.1.22
Functional entity
A collection of logical units that implement some specific functions.
Note: A physical device can be composed of multiple functional entities; a functional entity can also be composed of multiple physical devices.
3.1.23
Source device/target device
The source device represents the party that actively initiates the
conversation; the target device represents the party that ultimately responds Provide real-time media stream forwarding services, media storage,
historical media information retrieval and on-demand services. The media server receives media data from SIP devices, gateways or other media
servers; forwards these data to other single or multiple SIP clients and media servers according to commands.
3.1.28
Secure signal routing gateway
It has the function of receiving or forwarding SIP signaling within and outside the domain, completing the transfer of routing information between signaling security routing gateways, and performing addition and identification of routing signaling and signaling identity. It is a SIP server with security functions.
3.1.29
Cascaded networking
The two signaling security routing gateways are connected in accordance with the subordinate relationship. The central signaling control server of higher level can call the surveillance resources managed by the lower central signaling control server through the signaling secure routing gateway, whilst the lower central signaling control server can use signaling secure routing gateway to upload the surveillance resources managed by the central
signaling control server at the same level to the central signaling control server at the higher level or shares the upper level resources.
3.1.30
Peer-to-peer networking
Two signaling security routing gateways are connected according to a level relationship; the central signaling control server can mutually call the surveillance resources of the other central signaling control server with authorization.
3.2 Abbreviations
The following abbreviations apply to this document.
AES: Advanced Encryption Standard
B2BUA: Back to Back User Agent
CIF: Common Intermediate Format
Interconnected system platforms and devices shall not send application- independent messages to each other?€?s SIP ports, to avoid application-
independent messages occupying the system platform and device?€?s SIP
message processing resources.
This standard is based on basic protocols such as IETF RFC 3261, to regulate the various business functions related to surveillance networking. If there are special provisions in this standard, each function shall follow this standard; otherwise it shall follow the reference protocol such as IETF RFC 3261. 4.3.3 Session description protocol
The session negotiation and media negotiation in the process of establishing a session between devices in a networked system shall be described by the IETF RFC 4566 protocol. The main content includes session description, media information description, time information description. The session negotiation and media negotiation information shall be carried and transmitted in the message body of the SIP message.
4.3.4 Control description protocol
Control commands related to front-end device control, alarm information, device catalog information, etc. of the networked system shall be described by the Monitoring and Alarm Networking System Control Description Protocol (MANSCDP), as shown in Appendix A. Networking system control commands
shall be carried and transmitted in the message body of the SIP message. 4.3.5 Media playback control protocol
The playback control commands of historical video-audio shall use the
Monitoring Alarm Networking System Real-Time Streaming Protocol
(MANSRTSP). The protocol description is as shown in Appendix B, to realize the remote control such as normal playback, fast, pause, stop, random drag of the video-audio stream from end to end. The playback control commands of historical media are carried and transmitted in the message body of the SIP message Info.
4.3.6 Media transmission and media codec protocol
The media stream shall support RTP transmission when it is transmitted on the IP network of the networked system. The media stream sending source shall support the function of controlling the peak value of the media stream. The RTP payload shall adopt one of the following two formats: video-audio data based on PS package or video-audio elementary stream data, as shown in Appendix C. The transmission of media streams shall use the RTP protocol as specified by IETF RFC 3550, to provide time stamp information in real-time data
transmission and the synchronization of each data stream. It shall use the transmission bandwidth of the front-end device connected to the surveillance center shall be not less than 512 kbps. The single-channel network
transmission bandwidth of the front-end device connected to the surveillance center in important places shall not be less than 2 Mbps. The single-channel network transmission bandwidth between the surveillance centers at all levels shall not be less than 2.5 Mbps.
5.5 Network transmission quality
The transmission quality of the IP network of the networking system (such as transmission delay, packet loss rate, packet error rate, false packet rate, etc.) shall meet the following requirements:
a) The upper limit of network delay is 400 ms;
b) The upper limit of delay jitter is 50 ms;
c) The upper limit of the packet loss rate is 1 ?? 10-3;
d) The upper limit of the packet error rate is 1 ?? 10-4.
5.6 Video frame rate
The video frame rate that can be supported during local recording shall not be less than 25 frames/s. When the image format is CIF, the video frame rate of network transmission shall not be less than 25 frames/s. When the image format is 4CIF or more, the video frame rate transmitted over the network shall be no less than 15 frames/s; the important image information should be 25 frames/s.
6 Exchange requirements
6.1 Uniform coding rules
6.1.1 ID uniform coding rules
The networked system shall uniformly code the front-end device, surveillance center device, user terminal ID; the code is globally unique. Coding shall adopt coding rule A (20-digit decimal digital character coding), as shown in D.1. Local application systems may also use coding rule B (18-digit decimal digital character coding), as shown in D.2. The communication between the
management platform of the networked system, as well as the communication between the management platform and other systems shall adopt the uniform 6.6 Conversion of control protocol
It shall support the two-way protocol conversion between the device control protocol of the non-SIP surveillance domain and the session initiation protocol, session description protocol, control description protocol, media playback control protocol as specified in 4.3.
6.7 Conversion of media transmission protocol
It shall support the two-way protocol conversion between the media
transmission protocol and data encapsulation format of the non-SIP
surveillance domain and the media transmission protocol and data
encapsulation format as specified in 5.2.
6.8 Conversion of media data format
It shall support the conversion of media data in non-SIP surveillance domains into data conforming to the media encoding format as specified in 6.2.
6.9 Data exchange with other systems
The networked system provides interfaces with other application systems such as the integrated alarm handling system and tollgate system through the access gateway. The basic requirements, functional requirements, data specifications, transmission protocols and extension methods of the interface shall meet the requirements of Appendix G. The message format of the networked system and other system interfaces shall meet the requirements of Appendix G.
6.10 Signaling character set
The SIP signaling character set of networked systems and device shall adopt the encoding format of GB 2312.
7 Control requirements
7.1 Registration
It shall support the working mode of registering with SIP server when the device or system enters the networked system.
If the registration of the device or system is unsuccessful, it should be delayed for a certain random time and then re-register.
Refer to 9.1 for the session control process of device or system registration. 7.2 Real-time video-audio on-demand
It shall support real-time on-demand video on designated device and
designated channels; support simultaneous on-demand video on the same
image resource by multiple users.
See 9.2 for the session control process of real-time video-audio on-demand; the session description information uses the format as specified in 6.4. 7.3 Device control
It shall support sending control information to designated d...

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