A token ring local area network integrates voice, data and image information over a single cable with voice packets having a higher priority than non-voice packets, and with all the voice packets having the same length and the maximum non-voice packet length being related to the voice packet length and...http://www.google.com/patents/US5341374?utm_source=gb-gplus-sharePatent US5341374 - Communication network integrating voice data and video with distributed call processing
