Tube size: 17"/43.2 cm high contrast FST  Digital noise and echo cancellation  Integrated microphone, speakers and a sub-woofer  Optional CCD video camera  1280 x 1024 at 85 Hz  Supports Microsoft® NetMeeting™ and Intel Business Video Conferencing   The Nokia 447DTC is a 17" desktop communications display which lets the user fully exploit the potential of advanced application sharing and live audio-visual communication. A fully integrated unit, the Nokia 447DTC features built-in amplifier, speakers, a sub-woofer, microphone as well as optional CCD video camera.   With advanced digital signal processing the Nokia 447DTC offers excellent audio performance including digital acoustic noise and echo cancellation for true hands-free operation. The integrated stereo sound system with a sub-woofer ensures high quality sound reproduction. The optional CCD video camera comes equipped with both composite and S-video outputs for improved image quality.   The Nokia 447DTC renders crisp and clear images due to Dynamic focus system and a dot pitch of only 0.26 mm. The maximum resolution of 1280 x 1024 is achieved at TCO'95 approved flicker free 85 Hz refresh rate.   When combined with appropriate codec (compression and decompression of audio and video data) hardware and software, the Nokia 447DTC makes time and place freeing desktop communication a reality.