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The basic discussion apparatus enables participants to speak, register requests for statements and listen to others. It provides sockets for connecting pluggable microphones (dcn-mics and dcn-micl, which need to be ordered separately). In addition, two single earphones with separate volume controls can be connected to both sides of the device, making a device available to two representatives. By moving the microphone button more into two separate microphone button (for a separate receiver control and separate identity), it can be converted to complete the dual purpose of device (DCN - DISBDD dual-use button requires a separate order). Basic function, reduce the headphone output level to prevent to produce acoustic feedback (when listen to the basic language and is activated when the receiver opened when the device is used in double representative mode, can provide this functionality built-in speakers will mute when the receiver opened, to prevent to produce acoustic feedback, the device can be used as a single chairman on behalf of the device, double on behalf of the device, device (DCN - chairman DISBCM button requires a separate order) or a single representative with auxiliary button device, the user can choose a variety of color decoration article (DCN - DISR, requires a separate order and purchasing), In order to match the room style, for example, a multipurpose auxiliary button can be used to call for service staff, available cable clip (DCN - DISCLM, requires a separate order) to lock loop cable, apparatus for light color and brunet two base control and indicator lamp, microphone button with a red, green or yellow hair. Red indicates that the microphone is activated, green indicates that the voice request has been accepted, and yellow indicates "VIP" (this function can be provided separately when the device is used in double representative mode). , when representatives to join a notebook, VIP indicator light will light up (only when using the PC software available), two separate headphone volume control button, hidden "De - init" switch interconnect components, used for pluggable microphone socket, two 3.5 mm (0.14 inch) stereo headphone jack, 2 meters (78.7 inches) cable, end with a circular connector, six moulded six needle circular connector, used to perform the loop connection certification European CE certificate and recognition area