Kabeltronik tvn 1 1 twin cable video and power kabeltronik 841752075 p the most common use for cable of this design is for the interconnection of cameras requiring one coax for the video connection to the camera and one pair for audio the audio pair may be connected either to the camera itself to an audio junction box or directly into a microphone p p another common application is the connection of cctv surveillance cameras where the coax is used for the video connection and the twis