Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Corp, Nippon Electric Co LtdfiledCriticalNEC Corp
Priority to JP3773077ApriorityCriticalpatent/JPS53123009A/en
Publication of JPS53123009ApublicationCriticalpatent/JPS53123009A/en
H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
H04M15/36—Charging, billing or metering arrangements for party-lines
Landscapes
Engineering & Computer Science
(AREA)
Computer Networks & Wireless Communication
(AREA)
Signal Processing
(AREA)
Meter Arrangements
(AREA)
Abstract
PURPOSE:To make an outgoing and incoming efficiently by providing control circuits between a main equipment and each slave telephone set in apartments.
JP3773077A1977-04-011977-04-01Party line telephone set
PendingJPS53123009A
(en)
Circuit provision for telecommunication link installations, particularly for telephone installations, with coupling fields. (Machine-translation by Google Translate, not legally binding)
Improvements in telephone systems and systems with one or more urban links to choice, and interior telephone communications with secret between various extensions (Machine-translation by Google Translate, not legally binding)