DCS-2021 Wired Desktop Basic Discussion System

System Overview



The paperless multimedia function of the 20000 series economical paperless conference system can be realized by adding extended terminals to meet requirements of administrative conferences; this function can be extended as well with a pad or smartphone, which is a most economical paperless conference solution.


Phase-by-phase deployment, making investment flexible

If budget is limited and investment is difficult to realize in a short time, 20000 series can help you upgrade the voting or paperless function anytime.

Just a system to meet different custom requirements of conferences, making conference organization and operation flexible

How to realize a paperless function for the chairman terminal when the delegate terminal does not come out with the voting function? 20000 series allows users to set functions for single terminal, meeting requirements of organizing and operating different kinds of conferences within a site


Up-to-date conference system, making product upgrade flexible

20000 series allows users to upgrade different kinds of functions, including screen size management, attendance registration, voting, multi-screen interaction, conference notification, address navigation, timed notification, conference service, and conference control & management.


Operation interface of paperless conference extended terminal

Besides the adding extended paperless conference function, the DCS-2021 discussion terminal allows the delegate to speak, request to speak, listen to speech, and has automatic camera tracking function. The discussion and interpretation terminal accommodates up to 32-channel; With the USB port, the handheld voting units can be externally connected to extend voting function; Each congress terminal comes with headphone jack and volume control for the delegate to hear the floor audio and any interpreted language channels, and adjust volume level for comfortable listening. 1 to 4 delegate microphones can be activated at the same time. Built-in loudspeaker mutes automatically when the microphone is turned on. Under voice-activated mode, the microphone is automatically turned on when the delegate speaks, and VOX sensitivity can be adjusted, which is userfriendly to ordinary clients and visually impaired clients. All-in-one capacitive touch button design will also improve users’ operation experience.



Guangdong Cable Group

 Southern Media Group

 King Saud Medical Center

Congress Terminal DCS-2021


♦ Extended paperless conference function by adding extended paperless conference terminal
♦ Audio sensitivity can be adjusted individually or centrally
♦ Distributed power and intelligent grouping management
♦ Volume of built-in loudspeaker can be adjusted from 0~8 level
♦ All-in-one touch panel
♦ CD sound quallity
♦ Wired interpretation: 32 channels
♦ Intelligent voice activated
♦ Auto HD or SD camera tracking
♦ Voting function with extended voting keypad
♦ Pluggable microphone stem

Main Functions

DCS-2021C/D Discussion Terminal
◆ Any delegate terminal can be set as vice chairman terminal
◆ Comply with IEC60914 standard, utilize digital audio processing and transmission technology
◆ Support paperless conference by adding extended paperless conference terminal, to meet the future demand
◆ Microphone discussion: push to talk or request to talk. AUTO/FIFO/OPERATOR/VOX modes are available for microphone management. Speech can be heard via headphone or built-in loudspeaker.
◆ Voice-activated microphone mode: the microphone is automatically turned on when a delegate speaks. Sensitivity (H/M/L) and Mic time-out (20-250 seconds)can be adjusted on the congress server. Four delegate microphones can be activated at the same time.
◆ Attendance registration: by key press or supplementary registration.
◆ The handheld voting units can be externally connected with a USB port to extend voting function.
◆ Automatic camera tracking with preset panoramic position. HD camera is supported.
◆ Six kinds of detachable gooseneck microphone stem for convenient maintenance.
◆ Dynamic LCD messages for registration, discussion( such as please register, register done; request to speak, Mic on).

◆ Terminal has audio recording output interface.

The chairman terminal has below functions besides all functions of the delegate terminal.
◆ Chairman terminal can be activated at any time without preseting mic limit.

◆ Chairman priority button to override all active delegate terminals.

Based on the functions of DCS-2021 C/D discussion terminal, DCS-2021 CI/DI also has the below functions:
◆ Simultaneous interpretation: 32 channels wired simultaneous interpretation .
◆ Dynamic display the channel information with LCD.

Technical Specifications

Mounting type


Frequency response


VOX sensitivity

H/M/L (76dB/80dB/82dB)

Power input


Microphone length

Standard 410mm, Optional 310mm/510mm


47mm×18mm, Backlit with white-on-blue

Expansion port


Built-in speaker


Phone jack

3.5mm jack mono


0.9 kg

Dimension( L×W×H)


Working temperature


Storage temperature



Function Indicators

Front side
1. Pluggable MIC gooseneck;
2. PRIO key (red) for the chairman terminal; press this key to turn off all active congress terminals;
3. Speak key;
4. Simultaneous Interpretation channel selection key
5. Built-in 3W/4Ω loudspeaker
6. LCD display
7. Volume knob
8. 1.5m 6P cable with male connector, for connecting with congress server, power hub, or preceding congress terminal;

Congress Server GONSIN20000

GONSIN20000 Congress Server connects up to 45 congress terminals. Power hubs can be used to expand the system. Using one single 6-pin cable, power hubs can be cascaded together with the congress server to set up a large system of up to 4096 terminals. Built-in 8x1 video matrix switcher enables automatic camera tracking with additional dome camera(s) without PC software control. Built-in DSP function can be used to prevent acoustic feedback when necessary. Built-in audio mixer is able to compensate treble and bass for excellent sound quality. VOX H/M/L sensitivity and loudspeaker volume level can be adjusted for all terminals or single terminal. Terminal number writing can be done. Terminal LCD contrast is adjustable. Up to 32 channels are available for simultaneous interpretation. The congress server can communicate with the wireless AP by uploading GONSIN conference APP on pads or smart phones, so to realize the paperless multimedia function for the conference system.

◆ The sensitivity and the audio of microphone can be adjusted individually or centrally
◆ Distributed power and intelligent grouping management
◆ Volume of built-in loudspeaker can be adjusted from 0~8 level
◆ LCD screen to display the system setting status
◆ VOX sensitivity can be easily adjusted
◆ Built-in module for 8×1 video matrix switcher
◆ Extended module for HD camera tracking
◆ Built-in module for treble and bass compensation

Main Functions

Offline functions without PC/software control

◆ Based on digital control framework and high-speed CPU, the system has more stable performance and higher processing speed
◆ In compliance with IEC60914 standard and adoption of digital audio processing and transmission techniques to implement a digitalized server
◆ Developed on Linux-based OS platform, the server has robust stability and thus applies to large-sized convention centers with strict running conditions
◆ Utilized high-class DSP digital audio processor, support 48kHz and 32kHz audio frequency
◆ The server comes with built-in LCD panel and navigation button to display speaking mode, system status, terminal setting and management. Language supports Chinese/English
◆ Built-in 8x1+3 video matrix switcher with preset panoramic position to realize SD camera tracking, support 8*8 HD camera tracking with HD video tracking matrix
◆ Support audio recording, video recording(with a video recording card)
◆ Can be integrated with paperless conference system to realize paperless conference voting, election, voting function
◆ Voice-activated mic mode with adjustable VOX sensitivity and auto mic time-out
◆ H/M/L sensitivity can be adjusted for all terminals or single terminal
◆ Loudspeaker volume level can be adjusted for all terminals or single terminal
◆ Terminal number writing can be done
◆ Terminal LCD screen contrast can be adjusted
◆ Up to 4 delegate microphones can be activated at the same time

◆ Four speaking modes: VOX/Auto/FIFO/Operator

Extented functions with PC/software control

◆ Operator can click terminal icons for terminal management such as allow or reject the delegate to speak
◆ Speaking time limit can be preset to turn off terminal


Technical Specifications

Power input



Dot matrix 128×64, Backlit with white-on-blue

Max system capacity

4096 terminals

VOX sensitivity

H/M/L (76dB/80dB/82dB)

Max power capacity


Max audio output


Frequency response






Dynamic range

>94 dBA


>85 dBA

External audio input

6.5mm jack0.775V

Audio outputs

1x Balanced, 2x Unbalanced

REC OUT audio output

0-2.8V Vpp

A single standard capacity

45 Sets

PC communication

TCP/IP, RS-232

Camera control


Camera number


Active delegate microphone limit


Camera tracking protocol


Video mtrix input

RCA×81Vp-p 75Ω

Video mtrix output

RCA×41Vp-p 75Ω

Operating temperature

-0 - 45

Storage temperature

-20 - 50


Tabletop or 19" rack

Dimentions (W×H×D)




Function indicators


Front side
1. POWER: power switch with indicator;
2. 128*64mm backlight LCD screen (blue with white text);
3. Left and right arrow keys (◀▶);
4. Setting key (SET);
Press this key to enter or exit the menuinterface;
5. Up and down arrow keys (▲▼);
Use the keys indicated by ③④⑤ to set speak mode and number of active MICs, and adjust volume of loudspeaker;
6. Bass knob (BASS);
7. Treble knob (TREBLE);
8. General volume knob (VOL);

Rear side
9. RS-232 COM interface, for connecting to HD video tracking matrix;
10. RS-422 COM interface (RS-422 TO CAMERA), for connecting to dome camera that supports PELCO-P9600/VISCA-9600 or Speed Dome Controller
11. Eight-channel RCA video input connector (VIDEO INPUT);
12. Four-channel RCA video output connector (VIDEO OUTPUT);
13. RJ-45 interface;
14. Four-channel 6P interface with female connector (DELEGATES) for hand-in-hand congress terminals, for connecting to
repeater or congress terminal
15. MIC input interface, for connecting to wireless MICs to realize seamless connection with interpreter console
16. Audio input interface (two-channel non balanced interface), for connecting to external non-balanced audio device;
17. Audio input interface (one-channel balanced interface), for connecting to external balanced audio device;
18. Audio output interface (two-channel non balanced interface), for connecting to power amplifier or mixer;
19. Audio output interface (one-channel balanced interface), for connecting to power amplifier or mixer;
20. Power interface (AC 100-220V 50Hz).