The Philips DCN system is a cabled alternative to the Bosch cordless system.

so not as quick or as easy to deploy requiring a daisey chain of its single black cable to be routed back to the Philips CCU controller. However, in locations where radio interferenace maybe an issue theres sometimes no better alternative to going back to cable 

The Philips CCU controls all the microphone levels in a similar way to the Bosch system but also with the added feature of an open speech control which allows all microphones to be open, lending the system to other uses besides conferencing.

Each conferencing unit has its own built- in controllable PA speaker and gooseneck  microphone with an active red LED talk ring. As standard controllable headphone/earpiece socket. There are two versions of this microphone, delegate and chairman (which has the ability to override)

No internal batteries required as each unit is powered by the CCU.  

The rear of each unit has and input and output socket to enable a daisey chain of the single cable back to the CCU.

Cabling can be taken under desks or taped to the surface of carpets with duct tape to prevent a trip hazard or taken under rubber backed 600 x 900 industrial  entrance matting.