A process for testing a wrapped segment of a dual token ring transmits idle signals on the segment and monitors the received signals. If either an Active Monitor, Standby Monitor or Beacon frame is received the process loops. If a Ring Purge frame is received the process exits successfully and the segment...http://www.google.ca/patents/US5572534?utm_source=gb-gplus-sharePatent US5572534 - Method for merging wrapped media segments onto a working network
