Wireless video surveillance technology is used in many security areas. The subway safety guard system is an important equipment to ensure the smooth running of the subway and the safety of transportation. The use of wireless video surveillance technology in the metro video surveillance system.
demand analysis
For the metro, the first thing that monitoring must meet is the need for safe operation and explosion protection. Due to the large passenger flow and complicated personnel, the subway system is an underground space with closed, opaque, and unfavorable ventilation. Once an accident such as fire or explosion occurs, the impact will be very great. Therefore, it is necessary to intercept suspected explosives in advance, including Some liquids, solid explosives, and toxic gases, etc., are fully protected. In order to prevent passengers from carrying flammable and explosive materials and other suspicious items that may cause major public safety accidents, the station has also strengthened security measures. However, the existing security inspection equipment only performs security checks on people and objects, and all kinds of insecurity The hidden danger still exists, so the monitoring of the situation inside the subway car has always been a function that everyone expects, but due to the limitations of the wireless transmission bandwidth and movement speed has not been well achieved, with the issuance of China 3G licenses and 3G networks. It has become feasible to conduct real-time video surveillance in high-speed subway cars. ZTE Corporation, as the leading domestic 3G market leader, has launched a “Wireless Video†video surveillance system for subway wireless solutions in line with market needs. It has adopted networked and intelligent video surveillance technology to achieve full coverage of video surveillance in subways. Application, share some experiences with everyone here.
Wireless fixed-line convergence video surveillance solution design system architecture
"Network Video" video surveillance system adopts all-IP technology and provides an integrated end-to-end solution for mobile networks and fixed networks. It can provide monitoring front-end for various wireless networks such as WiFi/2.5G/2.75G/3G/WiMAX. , and a full range of multi-functional cable monitoring front-end, system management platform and portal, media distribution and storage platform, a variety of monitoring clients (including mobile client/PC client/WEB client/hardware decoder) Hardware and software equipment.
The system is based on the excellent fixed network and mobile all-network design concept. It adopts software modular design and advanced intelligent transcoding gateway design scheme according to the requirements of carrier-class reliability. It can provide excellent mobile and fixed-line converged video surveillance. Comprehensive application. For the metro system monitoring, its network architecture is shown in Figure 1.
Front-end design
In the subway car, according to the situation of the wireless network, configure the dedicated car 3G wireless video server + dome camera with the corresponding interface, the wireless video server itself can be configured with a hard disk, to achieve high-definition, real-time video (D1 format) local storage, according to 3G Network transmission speed, set CIF real-time or D1 non-real-time (down frame) video upload platform for monitoring center and related management personnel call, in the event of an accident, you can directly access the local video recording stored in D1 format.
For each station station and the monitoring points set at the entrances and exits of the building (upholstery), etc., you can directly use the network cameras, such as network high-speed ball, network guns, etc., to reduce the difficulty of construction, and simulation can also be used. Camera + Video Encoder Way Construction.
Access network design
For vehicle monitoring points, 3G wireless networks are recommended, such as the latest 3G or 3.5G wireless network technologies such as Telecom's CDMAEV-DO or China Mobile's TD-SCDMA HSPA+, to ensure sufficient uplink bandwidth, which can be upgraded to LTE networks in the future. . For fixed monitoring sites in the station, it is recommended to use wired access to the network to ensure the stability and reliability of access.
Monitoring Center Design
Subway monitoring system monitoring center generally consists of three types, from the management can be divided into three levels, the first type of station monitoring center, a large number, each station has a local monitoring center, to achieve the site monitoring image browsing, It has the highest authority for the control of this station's camera; the second type of monitoring center is the line subway dispatching and management center. Generally there is one per line, and it is necessary to know the general conditions of each station and the detailed information of the train operation at any time, all of the stations. The video can be selectively viewed, but the control authority for the camera is one level lower than that of the station. The third type is the vehicle maintenance center. Generally one line has 1-2 maintenance centers. The target of the monitoring is mainly the station and Subway trains have all kinds of hardware and equipment, and they have control rights for certain cameras and have the lowest control authority. The network structure of the line monitoring management center and station monitoring center is shown in Figure 2.
Mass storage design
In order to save a large amount of video recording data, a central mass storage device needs to be established. According to the characteristics of video surveillance video recording, it is recommended to use IP-SAN storage technology. Because IP-SAN has the following advantages over other storage methods:
High cost performance
Strong ability to expand;
Centralized management;
The Ethernet network technology is quite mature, reducing the complexity of configuration, maintenance, and management;
· Network-based storage systems, data migration and remote mirroring are easy, as long as the network bandwidth support, there is basically no distance limit, can better support remote disaster recovery;
Easy integration with existing monitoring Ethernet networks
The network has no distance limitations and is easy to deploy.
IP-SAN combines the speed and cost of SCSI with the commonality and universality of IP networks and Ethernet, making IP-SAN storage solutions a cost-effective, scalable, and well-known solution.
In the project, it is recommended to use dual-controller magnetic arrays. One main cabinet can be expanded to connect three sub-racks and provide 51 hard disk slots. Multiple IP-SAN arrays can be configured in the project to achieve large-capacity storage.
System platform design
The design of the monitoring system platform is divided into two parts: the business management platform and the media service platform. It completes the management functions of the entire system, such as equipment and user overhead management, AAA management, business management, equipment configuration management, platform networking management, operation and maintenance, and remote upgrade. And video storage, sub-forwarding function, providing full network support for business use.
In order to ensure the security of the system structure, the management center CMS+Distributed Video Surveillance (VSS) media node is used to build the system. The CMS equipment is placed in the Metro Monitoring Center and can be set as a VSS media node in each station. The cameras at the two stations are centralized to build a VSS media node to reduce the bandwidth occupied by video in the entire transmission network of the subway and improve the security of the system.
Smart Application Design
The multiplication of monitoring points brings more video information. Massive transmission of video information means higher bandwidth resources, more storage space, and more people analyzing, judging, and processing video information.
At present, the traditional monitoring system consists of staff monitoring the screen 24 hours a day, based on the person to judge the content of the video information, anomaly behavior analysis and processing, through the close combination of human defense and technical protection to ensure the basic safety of the community. However, it turns out that after 20 minutes of staring at the monitor screen, the attention of the human eye will be seriously reduced, and in the face of a large number of surveillance screens, the possibility of finding an abnormal behavior is relatively small. Based on the physiological characteristics of humans, it was originally expected to increase the security level by increasing the number of electronic eyes. Now, because of the rapid increase in video information, it is impossible to achieve the desired purpose. For the security sector, video surveillance images are important clues in the detection of major cases. For video clues that may have clues, they are often dozens of images for more than 10 consecutive days. The traditional one-frame playback is contrasted. The method greatly increases the difficulty of the forensic investigation and the period of investigation.
The intelligent video analysis system can better solve the above problems. The system adopts international advanced image processing, pattern recognition and computer vision technologies to alert and alarm the abnormal behaviors in the video surveillance scene, thereby constructing a fully automatic, All-weather, real-time monitoring of intelligent systems. The intelligent video analysis system converts the traditional person-attended passive monitoring mode into an active event management and convenient post-search analysis mode. Through real-time video, it automatically discovers suspicious situations and intelligently analyzes the alarm devices in the first time. Management system. At the same time, the intelligent analysis system server can flexibly access all relevant front-end devices in a specified area of ​​the IP broadband network, and does not require special upgrades and complicated settings, and the access capability can fully meet current requirements.
Intelligent video analysis technology is often deployed in two ways. One is to use an embedded architecture, and to perform local operations and analysis by embedding intelligent video analysis software in a video server or network camera with a DSP processing chip. The screen used is the CIF format. The biggest advantage of this method is that it uses distributed processing to reduce the number of analysis servers. Its big drawback is that the deployment is not flexible enough and it is inconvenient to adjust after installation. The second method is to adopt the background processing method. Through the integration with the monitoring platform, the digital code stream is obtained from the network video monitoring platform. After the decoding, direct analysis is performed. All the analysis is centralized in the monitoring center room. Adjusting and modifying the front-end camera that needs to be analyzed has nothing to do with the location of the camera. This is its biggest advantage. It can fully save and utilize resources, and it can be expanded as needed, without needing to be in place once. The biggest drawback is that it increases the number of analytical processing servers and may increase some of the network traffic. In this system, a streaming media server is used for media distribution and relay. The background processing method does not add extra network traffic. Therefore, it is recommended to use the background processing method to build an intelligent video analysis system application.
In addition, the system can also provide intelligent analysis features include items belonging to the alarm, regional intrusion alarm, face recognition deployment control, abnormal behavior analysis and alarm, traffic statistics and analysis and alarm functions.
System advantage introduction
The system's subway solution provides a flexible mobile access method and enables seamless coverage of video surveillance. The system also has the following features.
IPTV large-capacity system basic technology, distributed network architecture, modular design · Adopt IPTV large-capacity sub-forwarding technology architecture to achieve a user capacity of more than one million system users;
Distributed network architecture, using system management center + node mode;
· Modular design, the entire system includes the central management system CMS, media distribution network VDN, media scheduling unit, streaming media server SS, dedicated interface and other parts, all can be deployed independently;
Adopt dual-system hot backup or load balancing to achieve functional module-level security.
Decentralized Domain and Fine-grained Rights Management
·Flexible support for the hierarchical management functions of industry customers, which can realize the internal self-management of group customers, realize the overall operation of monitoring services, and can divide storage and forwarding resources for different users;
Video browsing rights: including real-time video playback;
Configuration management authority: includes configuring front-end device video parameters, alarm switch settings, alarm parameters, and alarm linkage configuration.
Video plan configuration permission: including setting monitoring point schedule video recording plan;
Video browsing permission: including video file query, video and video playback;
Cloud mirror control authority: including cloud mirror control operation, a total of 9 levels;
Alarm management authority: including alarm information receiving and alarm information processing;
Language communication rights: including language intercom, voice broadcast, etc.
User management authority: including management operator account configuration;
Equipment management authority: including management of PU equipment and channels;
TV wall management rights: including the configuration and use of video walls;
Electronic map permission: including the configuration and use of electronic maps.
Unified network management and maintenance, unified management of the entire network equipment
The system uses SNMP+TR069 protocol to build a unified network management system.
Main devices such as platform servers and core switches adopt the SNMP protocol for network management.
The large and constantly changing video coding device PU and client CU use the TR069 protocol for network management. The operation is simple and can be integrated into the ITMS unified network management platform.
Unified user account authentication: The user's mobile phone number can be used as the user's unified account for the system.
High security
The client provides security features such as USBKey security authentication, MAC address and IP address or address segment binding, login account limit, user password and account expiration settings, and regular password prompt changes to ensure client security.
The platform server adopts the Linux operating system, configures hardware firewalls, and kills virus software, and adopts reinforcement measures such as port blocking and access restrictions to ensure the security of the platform.
Using streaming media packaging technology, MD5 signaling encryption, media fragment storage, and dedicated transcoding tools ensure media transmission and storage security;
Supports the mutual preparation of POP units within the service node and the mutual preparation of service nodes, and fully guarantees the high reliability of the system from the application layer.
Fixed network, mobile surveillance fusion support, intelligent transcoding
The system supports both fixed network and mobile monitoring services, and provides a full range of mobile monitoring module components such as MSP, PSS, VAU, wireless PU, M_CU, etc. It can build a complete converged video surveillance service solution without the participation of other manufacturers.
The system can adapt to various network environments, including: wired networks (xDSL, LAN, xPON, E1), etc.; wireless networks (CDMA1X, EV-DO, WCDMA, EDGE, TD-SCDMA, HSD/UPA, WiMAX, WiFi);
The system can integrate access to the fixed network front end, mobile front end, fixed network/mobile dual-mode front end, and supports multi-stream PU devices;
The system supports fixed network and mobile phone monitoring client access services;
· For 3G mobile network applications, the system can provide intelligent transcoding capabilities, and automatically select the optimal transcoding scheme through the intelligent transcoding mechanism to output the media stream suitable for mobile phone playback.
Cloud mirror lock function
Support users to lock the PTZ, other users can not operate the PTZ while the user is locking the PTZ, only the current user can control and unlock the PTZ.
After the cloud mirror is locked, the client gives a corresponding prompt when other users operate, such as "The cloud mirror has been locked by the user XXXX, and operation is not allowed";
Enterprise initialization administrators can be forced to unlock;
The user is allowed to perform the lock operation on the channel only if the account has the permission of the cloud mirror lock and has assigned the right control of the cloud mirror of the corresponding channel.
The MOC client, WMPortal, and MOCPlayer all provide this function.
Provide professional network quality analysis tools
The system maintenance and management portal supports the display of the external IP address and intranet IP address of the PU at the same time, effectively assisting operators in service management and maintenance;
The professional network quality detection and analysis function is integrated in the client. When the client plays a video, green screen, or card, it can display the abnormal network status on the client side, helping the user to locate and resolve the fault.
In the status bar of the MOC client, support for displaying network status includes information such as total code rate, packet loss rate, and jitter;
Supports diagnosis of network conditions. Statistics such as packet loss, packet loss rate, bit rate, number of out-of-order packets, frame size, and network jitter can be calculated and the network status can be graphically displayed.
demand analysis
For the metro, the first thing that monitoring must meet is the need for safe operation and explosion protection. Due to the large passenger flow and complicated personnel, the subway system is an underground space with closed, opaque, and unfavorable ventilation. Once an accident such as fire or explosion occurs, the impact will be very great. Therefore, it is necessary to intercept suspected explosives in advance, including Some liquids, solid explosives, and toxic gases, etc., are fully protected. In order to prevent passengers from carrying flammable and explosive materials and other suspicious items that may cause major public safety accidents, the station has also strengthened security measures. However, the existing security inspection equipment only performs security checks on people and objects, and all kinds of insecurity The hidden danger still exists, so the monitoring of the situation inside the subway car has always been a function that everyone expects, but due to the limitations of the wireless transmission bandwidth and movement speed has not been well achieved, with the issuance of China 3G licenses and 3G networks. It has become feasible to conduct real-time video surveillance in high-speed subway cars. ZTE Corporation, as the leading domestic 3G market leader, has launched a “Wireless Video†video surveillance system for subway wireless solutions in line with market needs. It has adopted networked and intelligent video surveillance technology to achieve full coverage of video surveillance in subways. Application, share some experiences with everyone here.
Wireless fixed-line convergence video surveillance solution design system architecture
"Network Video" video surveillance system adopts all-IP technology and provides an integrated end-to-end solution for mobile networks and fixed networks. It can provide monitoring front-end for various wireless networks such as WiFi/2.5G/2.75G/3G/WiMAX. , and a full range of multi-functional cable monitoring front-end, system management platform and portal, media distribution and storage platform, a variety of monitoring clients (including mobile client/PC client/WEB client/hardware decoder) Hardware and software equipment.
The system is based on the excellent fixed network and mobile all-network design concept. It adopts software modular design and advanced intelligent transcoding gateway design scheme according to the requirements of carrier-class reliability. It can provide excellent mobile and fixed-line converged video surveillance. Comprehensive application. For the metro system monitoring, its network architecture is shown in Figure 1.
Front-end design
In the subway car, according to the situation of the wireless network, configure the dedicated car 3G wireless video server + dome camera with the corresponding interface, the wireless video server itself can be configured with a hard disk, to achieve high-definition, real-time video (D1 format) local storage, according to 3G Network transmission speed, set CIF real-time or D1 non-real-time (down frame) video upload platform for monitoring center and related management personnel call, in the event of an accident, you can directly access the local video recording stored in D1 format.
For each station station and the monitoring points set at the entrances and exits of the building (upholstery), etc., you can directly use the network cameras, such as network high-speed ball, network guns, etc., to reduce the difficulty of construction, and simulation can also be used. Camera + Video Encoder Way Construction.
Access network design
For vehicle monitoring points, 3G wireless networks are recommended, such as the latest 3G or 3.5G wireless network technologies such as Telecom's CDMAEV-DO or China Mobile's TD-SCDMA HSPA+, to ensure sufficient uplink bandwidth, which can be upgraded to LTE networks in the future. . For fixed monitoring sites in the station, it is recommended to use wired access to the network to ensure the stability and reliability of access.
Monitoring Center Design
Subway monitoring system monitoring center generally consists of three types, from the management can be divided into three levels, the first type of station monitoring center, a large number, each station has a local monitoring center, to achieve the site monitoring image browsing, It has the highest authority for the control of this station's camera; the second type of monitoring center is the line subway dispatching and management center. Generally there is one per line, and it is necessary to know the general conditions of each station and the detailed information of the train operation at any time, all of the stations. The video can be selectively viewed, but the control authority for the camera is one level lower than that of the station. The third type is the vehicle maintenance center. Generally one line has 1-2 maintenance centers. The target of the monitoring is mainly the station and Subway trains have all kinds of hardware and equipment, and they have control rights for certain cameras and have the lowest control authority. The network structure of the line monitoring management center and station monitoring center is shown in Figure 2.
Mass storage design
In order to save a large amount of video recording data, a central mass storage device needs to be established. According to the characteristics of video surveillance video recording, it is recommended to use IP-SAN storage technology. Because IP-SAN has the following advantages over other storage methods:
High cost performance
Strong ability to expand;
Centralized management;
The Ethernet network technology is quite mature, reducing the complexity of configuration, maintenance, and management;
· Network-based storage systems, data migration and remote mirroring are easy, as long as the network bandwidth support, there is basically no distance limit, can better support remote disaster recovery;
Easy integration with existing monitoring Ethernet networks
The network has no distance limitations and is easy to deploy.
IP-SAN combines the speed and cost of SCSI with the commonality and universality of IP networks and Ethernet, making IP-SAN storage solutions a cost-effective, scalable, and well-known solution.
In the project, it is recommended to use dual-controller magnetic arrays. One main cabinet can be expanded to connect three sub-racks and provide 51 hard disk slots. Multiple IP-SAN arrays can be configured in the project to achieve large-capacity storage.
System platform design
The design of the monitoring system platform is divided into two parts: the business management platform and the media service platform. It completes the management functions of the entire system, such as equipment and user overhead management, AAA management, business management, equipment configuration management, platform networking management, operation and maintenance, and remote upgrade. And video storage, sub-forwarding function, providing full network support for business use.
In order to ensure the security of the system structure, the management center CMS+Distributed Video Surveillance (VSS) media node is used to build the system. The CMS equipment is placed in the Metro Monitoring Center and can be set as a VSS media node in each station. The cameras at the two stations are centralized to build a VSS media node to reduce the bandwidth occupied by video in the entire transmission network of the subway and improve the security of the system.
Smart Application Design
The multiplication of monitoring points brings more video information. Massive transmission of video information means higher bandwidth resources, more storage space, and more people analyzing, judging, and processing video information.
At present, the traditional monitoring system consists of staff monitoring the screen 24 hours a day, based on the person to judge the content of the video information, anomaly behavior analysis and processing, through the close combination of human defense and technical protection to ensure the basic safety of the community. However, it turns out that after 20 minutes of staring at the monitor screen, the attention of the human eye will be seriously reduced, and in the face of a large number of surveillance screens, the possibility of finding an abnormal behavior is relatively small. Based on the physiological characteristics of humans, it was originally expected to increase the security level by increasing the number of electronic eyes. Now, because of the rapid increase in video information, it is impossible to achieve the desired purpose. For the security sector, video surveillance images are important clues in the detection of major cases. For video clues that may have clues, they are often dozens of images for more than 10 consecutive days. The traditional one-frame playback is contrasted. The method greatly increases the difficulty of the forensic investigation and the period of investigation.
The intelligent video analysis system can better solve the above problems. The system adopts international advanced image processing, pattern recognition and computer vision technologies to alert and alarm the abnormal behaviors in the video surveillance scene, thereby constructing a fully automatic, All-weather, real-time monitoring of intelligent systems. The intelligent video analysis system converts the traditional person-attended passive monitoring mode into an active event management and convenient post-search analysis mode. Through real-time video, it automatically discovers suspicious situations and intelligently analyzes the alarm devices in the first time. Management system. At the same time, the intelligent analysis system server can flexibly access all relevant front-end devices in a specified area of ​​the IP broadband network, and does not require special upgrades and complicated settings, and the access capability can fully meet current requirements.
Intelligent video analysis technology is often deployed in two ways. One is to use an embedded architecture, and to perform local operations and analysis by embedding intelligent video analysis software in a video server or network camera with a DSP processing chip. The screen used is the CIF format. The biggest advantage of this method is that it uses distributed processing to reduce the number of analysis servers. Its big drawback is that the deployment is not flexible enough and it is inconvenient to adjust after installation. The second method is to adopt the background processing method. Through the integration with the monitoring platform, the digital code stream is obtained from the network video monitoring platform. After the decoding, direct analysis is performed. All the analysis is centralized in the monitoring center room. Adjusting and modifying the front-end camera that needs to be analyzed has nothing to do with the location of the camera. This is its biggest advantage. It can fully save and utilize resources, and it can be expanded as needed, without needing to be in place once. The biggest drawback is that it increases the number of analytical processing servers and may increase some of the network traffic. In this system, a streaming media server is used for media distribution and relay. The background processing method does not add extra network traffic. Therefore, it is recommended to use the background processing method to build an intelligent video analysis system application.
In addition, the system can also provide intelligent analysis features include items belonging to the alarm, regional intrusion alarm, face recognition deployment control, abnormal behavior analysis and alarm, traffic statistics and analysis and alarm functions.
System advantage introduction
The system's subway solution provides a flexible mobile access method and enables seamless coverage of video surveillance. The system also has the following features.
IPTV large-capacity system basic technology, distributed network architecture, modular design · Adopt IPTV large-capacity sub-forwarding technology architecture to achieve a user capacity of more than one million system users;
Distributed network architecture, using system management center + node mode;
· Modular design, the entire system includes the central management system CMS, media distribution network VDN, media scheduling unit, streaming media server SS, dedicated interface and other parts, all can be deployed independently;
Adopt dual-system hot backup or load balancing to achieve functional module-level security.
Decentralized Domain and Fine-grained Rights Management
·Flexible support for the hierarchical management functions of industry customers, which can realize the internal self-management of group customers, realize the overall operation of monitoring services, and can divide storage and forwarding resources for different users;
Video browsing rights: including real-time video playback;
Configuration management authority: includes configuring front-end device video parameters, alarm switch settings, alarm parameters, and alarm linkage configuration.
Video plan configuration permission: including setting monitoring point schedule video recording plan;
Video browsing permission: including video file query, video and video playback;
Cloud mirror control authority: including cloud mirror control operation, a total of 9 levels;
Alarm management authority: including alarm information receiving and alarm information processing;
Language communication rights: including language intercom, voice broadcast, etc.
User management authority: including management operator account configuration;
Equipment management authority: including management of PU equipment and channels;
TV wall management rights: including the configuration and use of video walls;
Electronic map permission: including the configuration and use of electronic maps.
Unified network management and maintenance, unified management of the entire network equipment
The system uses SNMP+TR069 protocol to build a unified network management system.
Main devices such as platform servers and core switches adopt the SNMP protocol for network management.
The large and constantly changing video coding device PU and client CU use the TR069 protocol for network management. The operation is simple and can be integrated into the ITMS unified network management platform.
Unified user account authentication: The user's mobile phone number can be used as the user's unified account for the system.
High security
The client provides security features such as USBKey security authentication, MAC address and IP address or address segment binding, login account limit, user password and account expiration settings, and regular password prompt changes to ensure client security.
The platform server adopts the Linux operating system, configures hardware firewalls, and kills virus software, and adopts reinforcement measures such as port blocking and access restrictions to ensure the security of the platform.
Using streaming media packaging technology, MD5 signaling encryption, media fragment storage, and dedicated transcoding tools ensure media transmission and storage security;
Supports the mutual preparation of POP units within the service node and the mutual preparation of service nodes, and fully guarantees the high reliability of the system from the application layer.
Fixed network, mobile surveillance fusion support, intelligent transcoding
The system supports both fixed network and mobile monitoring services, and provides a full range of mobile monitoring module components such as MSP, PSS, VAU, wireless PU, M_CU, etc. It can build a complete converged video surveillance service solution without the participation of other manufacturers.
The system can adapt to various network environments, including: wired networks (xDSL, LAN, xPON, E1), etc.; wireless networks (CDMA1X, EV-DO, WCDMA, EDGE, TD-SCDMA, HSD/UPA, WiMAX, WiFi);
The system can integrate access to the fixed network front end, mobile front end, fixed network/mobile dual-mode front end, and supports multi-stream PU devices;
The system supports fixed network and mobile phone monitoring client access services;
· For 3G mobile network applications, the system can provide intelligent transcoding capabilities, and automatically select the optimal transcoding scheme through the intelligent transcoding mechanism to output the media stream suitable for mobile phone playback.
Cloud mirror lock function
Support users to lock the PTZ, other users can not operate the PTZ while the user is locking the PTZ, only the current user can control and unlock the PTZ.
After the cloud mirror is locked, the client gives a corresponding prompt when other users operate, such as "The cloud mirror has been locked by the user XXXX, and operation is not allowed";
Enterprise initialization administrators can be forced to unlock;
The user is allowed to perform the lock operation on the channel only if the account has the permission of the cloud mirror lock and has assigned the right control of the cloud mirror of the corresponding channel.
The MOC client, WMPortal, and MOCPlayer all provide this function.
Provide professional network quality analysis tools
The system maintenance and management portal supports the display of the external IP address and intranet IP address of the PU at the same time, effectively assisting operators in service management and maintenance;
The professional network quality detection and analysis function is integrated in the client. When the client plays a video, green screen, or card, it can display the abnormal network status on the client side, helping the user to locate and resolve the fault.
In the status bar of the MOC client, support for displaying network status includes information such as total code rate, packet loss rate, and jitter;
Supports diagnosis of network conditions. Statistics such as packet loss, packet loss rate, bit rate, number of out-of-order packets, frame size, and network jitter can be calculated and the network status can be graphically displayed.
OVERVIEW
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