Push-button telephone set

Abstract

Abstract PURPOSE:To inform emergency communication to all button terminal sets other than a terminal set sending an emergency communication command by means of simultaneous paging by providing a function interrupting a talking on its way if a busy button telephone set exists when a control means received the emergent communication command. CONSTITUTION:When a button telephone terminal set 101 depresses an emergency communication command button, reception information analysis means 22 analyses whether the button depression information is emergency communication command information and informs the emergency communication command 25 to the control means 23. The means 23 interrupts the talking tentatively by sending required control information via a line connection means 21 if any busy telephone set exists in the button terminal sets 102-10n and informs the paging command 26 to the paging control means 24 and sends paging control information to paging means 112-11n of the sets 102-10n.

Inventors

• 👤 Mitsuhiro Hosokawa
• 👤 細川　充広

Bibliographic Details