1. Comply 
									with IEC60914, GBT15381-94 international 
									standards
									2. Adopt all-digital conference technology, 
									developed based on digital network 
									architecture, built-in high-performance CPU 
									processor, faster processing speed, better 
									sound quality, support discussion, video 
									tracking functions
									3. High-performance switching power supply, 
									long-distance transmission will not have any 
									impact on sound quality
									4. Anti-interference circuit design to 
									eliminate all interference from mobile phone 
									signals
									5. 3.5-inch full-view IPS capacitive screen, 
									intuitive display and easy adjustment of 
									system parameters
									6. Support USB recording, high-fidelity WAV 
									format output
									7. It has 3 groups of 6-channel RJ45 
									microphone unit interfaces, adopts 
									closed-loop Ethernet link mode, supports 
									bilateral power supply of microphone units, 
									and supports hot-plugging of microphone 
									units. Each channel supports 20 units, which 
									can be connected to 60 units.
									8. With 4 channels of 8-core microphone unit 
									interface, each channel supports 30 units, 
									can be connected to 120 units
									9. A single host can be connected to a 
									maximum of 256 conference units through the 
									expansion power supply, or a conference 
									expansion host (multiple extension hosts are 
									connected in series in hand), and a 
									conference system can access up to 1200 
									conference units;
									10. The unit adopts "hand in hand" 
									connection mode, which supports hot 
									plugging, which is convenient for 
									installation and maintenance
									11. With a variety of conference modes: FIFO 
									(first in, first out mode), APPLY 
									(application mode), FREE (free mode), LIMIT 
									(restricted mode), VOICE (voice control 
									mode)
									12. Speaker limit function: can limit the 
									maximum number of units that can speak at 
									the same time (can be set to 1-8 different 
									numbers), the chairman unit is not limited
									13. Speaking time limit function: can limit 
									the speaking time of the speaking unit (can 
									be set to 0-1000S), there are regular 
									shutdown and automatic shutdown, the 
									chairman unit is not limited
									14. With conference service function, 
									speaking unit can apply for tea, paper, help 
									services
									15. Network-based collaborative management, 
									system host can set IP address, with TCP / 
									IP network interface, can connect to 
									wireless router, use computer, mobile phone, 
									tablet and other devices in the same local 
									area network to set the operation of the 
									host, support Google Android / Microsoft 
									Windows systems and other operating system
									16. With USB interface, can be connected to 
									a computer to set up the host
									17. With camera 232 and 485 communication 
									interface (6P Phoenix interface), connect SD 
									or HD camera, support SONY VISCA, PELCO P / 
									D communication protocol
									18. With video switching 232 interface (3P 
									Phoenix interface), can connect HD video 
									matrix
									19. With 4x1 HDMI HD video switching 
									interface(Optional installation)
									20. With central control code 232 interface 
									(3P Phoenix interface), can be connected to 
									central control system
									21. With 1 balanced audio output interface 
									(XLR), can be connected to sound 
									reinforcement or recording equipment
									22. With 1 unbalanced audio output interface 
									(6.35mm), can be connected to sound 
									reinforcement or recording equipment
									23. With 1 unbalanced audio input interface 
									(RCA), can input external audio signals 
									(such as background music or remote voice 
									signals)
									24. Can be installed in a standard 19-inch 
									cabinet for easy storage and storage