A method and apparatus for enabling the transmitter to decide the number of variable length frames that can be trasmitted within the token holding timer (THT) window. The last frame decision algorithm enables the transmitter to set the intermediate frame bit in the ending delimiter to the right state...http://www.google.co.uk/patents/US4964113?utm_source=gb-gplus-sharePatent US4964113 - Multi-frame transmission control for token ring networks
