Airport Air Traffic Control System Solution

1. Requirements Analysis
  The audio/video multimedia command & dispatch system launched for aviation dispatch requirements provides dispatchers at all levels with comprehensive dispatch methods including voice, image, video, data, and conference-style interaction. Dispatchers at all levels can achieve on-site presence and interactivity during dispatch operations, communicating face-to-face, and obtaining required data, information, on-site scenes, and a platform for work exchange in a timely manner, thereby completing dispatch work in a more comprehensive, safe, and refined manner.
2. Solution Description
  This command & dispatch system integrates multiple communication methods including SDH optical fiber transmission, satellite, IP, GSM, and E1, enabling the access of video terminals, fixed telephones, handheld two-way radios, desktop intercom terminals, mobile phones, and communication vehicles as voice terminals on this system. Optical fiber communication serves as the primary communication method throughout the system, ensuring sufficient image transmission bandwidth, while wireless links serve as auxiliary transmission methods to enable wireless terminal access to the dispatch system. It is compatible with existing military private lines (E1 lines or optical lines), telecom fixed-line networks, mobile terminals, satellite phones, and radio station terminals, fully leveraging the multimedia characteristics of the system to meet the military's comprehensive dispatch business requirements.

  The air traffic control command & dispatch center, where traditional audio/video communication methods are no longer sufficient to meet the system's command & dispatch requirements. In response to this system's needs, our company fully leverages Raytrans' multimedia converged audio/video command & dispatch system capabilities, planning and designing a solution based on integrated audio/video transmission, as well as comprehensive information interaction methods such as network, text, SMS, and fax, to resolve the "see, hear, and manage" audio/video command & dispatch issues, achieving precise and efficient command and control of special aircraft operations, and providing real-time, accurate, and efficient information technology support for leadership decision-making.
  This system integrates SDH optical fiber transmission, E1 access, various 64K Z-interfaces (such as telephone interfaces, radio interfaces, satellite phone interfaces, and public address microphone interfaces), as well as IP communication access methods, realizing audio, video, and network transmission and switching. It also provides seamlessly connected voice recording and voicemail servers, network management servers, and fax/email send-and-receive servers. Additionally, this system provides centralized network management for the connected optical fiber transmission equipment, enabling configuration and status query of remote devices.
  Through the command console at the command center, various types of information are accessed, processed, and output. Existing communication methods, airport video surveillance, air traffic control data displays, flight information displays, and real-time meteorological data are connected to the command center and displayed on the large-screen video wall, establishing a digitalized integrated audio, video, and data command system, realizing all-weather real-time audio/video data transmission, monitoring, intercom, and broadcasting with integrated, modernized, and intelligent command functions. The system is divided into the following subsystems based on its main functions.
2.1 HDID LCD Video Wall System

2.1.1 Air Traffic Control Data Display System
  Air traffic control center data is transmitted via optical fiber to the command console, connected to the display control unit, where required data is processed and controlled for display on the large screen, providing air traffic control data support for leadership decision-making.
2.1.2 Flight Data Intelligence Display System
  Flight support center intelligence data is connected to the console via optical fiber, connected to the display control unit, where required data is processed and controlled for display on the large screen, providing flight data support for leadership decision-making.
2.1.3 Real-time Meteorological Data Display System
  Meteorological data from the meteorological support center is connected to the console via optical fiber, connected to the display control unit, where required data is processed and controlled for display on the large screen, providing meteorological data support for leadership decision-making.
2.1.4 Internal Field GPS Vehicle Dispatch Monitoring System
  By accessing the internal field vehicle GPS monitoring system, real-time positioning of various support vehicles in the internal field can be achieved, along with voice dispatch and command.
2.1.5 Radar Signal Secondary Display System
  Air traffic control center data is transmitted via optical fiber to the command console, connected to the display control unit, where required radar data is processed and controlled for display on the large screen, providing air traffic control data support for leadership decision-making.
2.1.6 Video Surveillance System
  Video signals from the internal field and relevant support centers are transmitted to the large-screen display system for controlled display, providing video information support for the command center.
2.2 Integrated Services Communication Command & Dispatch System
  The audio/video command & dispatch system is the core of the command center, through which all business and communication functions are realized. Using Raytrans' proprietary IDM MSTP G3CP equipment, various information transmission functions, various information access functions, and business processing functions of each subsystem are implemented. It is a multimedia converged communication platform integrating program-controlled dispatch telephones and audio/video command & dispatch functions.
  IDM MSTP G3CP is a dual-system switching device based on PBX and IPPBX. For important locations requiring high real-time performance for images and sound, and ensuring communication line reliability, the PBX system based on E1 transmission is selected for audio/video switching. For locations with independent IP channels, IPPBX is used for audio/video soft switching.
  For other multi-service shared IP channels, precise corresponding restrictions and planning are made between multiple services to ensure audio/video real-time performance, providing strong support for the command center's dispatch operations.
2.2.1 Telephone Access System
  Can integrate magneto, common battery, and program-controlled telephones.
  Magneto telephones, common battery telephones, and program-controlled telephones in the wiring room are connected to the newly added PCM equipment in the equipment room, and connected to the command control platform through the optical interface of the PCM equipment. Magneto telephone modules, common battery telephone modules, and program-controlled telephone modules are configured on the command control platform. These functional modules are multiplexed onto the PDH board and connected to the PCM equipment in the wiring room through the PDH board's optical interface. These functional modules correspond to existing external field private lines, and multiple additional magneto, common battery, and program-controlled telephone interfaces can also be added through the command & dispatch platform.
2.2.2 "One-Touch Direct Connect" Telephone System
  Touchscreen dispatch console and integrated communication system

  The command & dispatch platform can set one-key direct dialing for all telephones. Hotline keys can be pre-configured for one-key direct dialing, or calls can be made by clicking a member icon on the console touchscreen. Through the command & dispatch platform software, telephone users on the console touchscreen can have 2 types of icons: one is the traditional telephone user icon, and the other is the IP telephone user icon. By clicking these icons, one-key direct connection between the console and any telephone user is achieved. If the telephone user has a command & dispatch terminal installed, clicking the IP telephone user icon enables video intercom with that user.
  One-key direct connection supports point-to-point calls and group one-key direct dialing. On the command & dispatch platform, major operational units are grouped, with several terminal users forming one group. When the group icon is clicked, one-key direct connection from the console to all users in that group is achieved.
2.2.3 Video Surveillance, Video Intercom, Video Conference, and Telephone Conference Management System
  Interconnected with audio/video terminals to realize video surveillance, video intercom, video conference, and other functions.
  Video surveillance subsystem: High-fidelity audio monitoring and IP HD video surveillance of important locations. The command center can view on-site video surveillance images from video terminals. Cameras and other video capture devices can be bound to nearby telephone terminals. For multi-line telephone systems sharing one video channel, a camera position preset lock function is provided, where the user who goes off-hook first or has higher priority uses the camera first, and the camera's surveillance image is transmitted back to the command center and automatically displayed on the large screen. Some video surveillance devices are bound with public address equipment, supporting loudspeaker announcements.
  Audio/video intercom subsystem: Customers with bidirectional audio/video terminals can achieve bidirectional video intercom. Multi-party audio/video conferences can also be realized. When a video phone in the audio/video system communicates with an ordinary telephone, it can only be used as a regular audio telephone service.
  Video conference subsystem: Used for multi-party conference video interaction and intercom, video composition, and document transmission during conferences. The dispatch console has video conference terminal functions. The video conference server has conference management functions, as well as conference recording, retrieval, and playback functions. This system can have multiple video conference rooms and can hold multiple video conferences simultaneously.
  Telephone conference management system: The integrated access platform can arbitrarily group and organize conferences for accessed telephones, realizing voice conference functions.
2.2.4 IDM-60N Multi-Radio Wired/Wireless Conversion Direct Intercom System
  Can connect with various radios, such as ultra-short wave radios and wireless two-way radios. The command control platform is configured with a wired/wireless intercom module. This module has multiple wireless interfaces, such as ultra-short wave radio and wireless two-way radio systems. This module can achieve seamless connection with traditional analog trunked communication. Each desktop intercom terminal can simultaneously control 2 radios on different frequencies.
  This module can be configured with multiple EM2/4 interfaces and can simultaneously access multiple wireless radios. Air-to-ground communication radios and surface communication radios can be connected through control interfaces, realizing interconnection between different radios. This module has multiple FXO interfaces that connect with the console's microphone. Through the radio control keyboard, communication between the command control center and wireless radios can be achieved. Additionally, the wired/wireless intercom module can access PSTN and GSM networks, realizing communication between fixed telephones and mobile phones with wireless radios, and direct intercom between fixed telephones or mobile phones and analog trunked systems.
2.2.5 IP Emergency Broadcast Public Address System
  The public address broadcast system is used for broadcasting and receiving sound signals.
  The command control platform is configured with an IPPBX module to realize public address broadcasting for support units in the internal and external fields. The EM2/4 or high-fidelity interfaces of the command control platform interconnect with microphones, and the IP interfaces of the command control platform interconnect with public address system terminal devices.
  The public address broadcast system can also be implemented using IP telephones and broadcast speakers. Upon receiving broadcast messages, terminals automatically open the broadcast channel to start broadcasting. In emergency situations, the corresponding pre-recorded emergency plan voice files can be played directly, automatically guiding the handling of emergencies.
  The public address broadcast system can interface with the existing camp broadcast alarm system to achieve alarm linkage.
2.2.6 Telephone Recording and Retrieval System
  This system can perform recording and retrieval for designated telephones through the integrated access platform.
  Recording is divided into trigger-based recording and scheduled automatic recording.
  Audio and video on critical links can be set for full recording; all voice calls including conference calls, dispatch calls, and hotline calls with each dispatch console must be fully recorded; other temporarily defined lines within specified time periods must also be voice-recorded.
  Voicemail allows users to leave messages according to system prompts; the dispatch console can also record voice messages or convert text to speech. Voice messages can be listened to via telephone or sent to the user's email inbox.
  Recording file retrieval can be performed based on factors such as calling party, called party, start time, end time, and duration.