sentences:  In the event of a cable breakdown or similar event which may result in permanent loops on subscribers lines, after a predetermined time the register would be forcibly released and the subscriber put into a parked condition.This was possible because each subscriber had a dual armature line relay, and in the parked condition only the low-current armature was operated.The scanners scanned the subscribers seeking out the ones that had initiated a calling condition by lifting their handset, ignoring any in a parked condition.