Arrangement for detecting telephone receiver off hook has mechanism for restoring receiver to state in which it can be called triggered after receiver unintentionally left off hook

摘要

The arrangement has a mechanism for restoring the telephone handset (2) to a state in which it can be called that is triggered after the handset has been unintentionally left off the hook. The user is notified of the lack of function of the handset. The exchange contains a device (V) that communicates with a device (T) in the telephone (1) that monitors a position-dependent sensor in the handset.