Right, but C&S (Communications & Signals) has repeatedly stated it's happening because of the bidirectional link.Its actually due to their receivers. They have 1 or 2 receivers that are tripping and causing the simulcast to key up. Not user activity. It should be diagnosed at some point to see if its a true receiver problem or a phone line problem from one of the receiver sites. Easy and temp fix is to disable the offending receiver.