GB628200A - Improvements in or relating to party line telephone systems - Google Patents

Improvements in or relating to party line telephone systems

Info

Publication number
GB628200A
GB628200A GB21769/47A GB2176947A GB628200A GB 628200 A GB628200 A GB 628200A GB 21769/47 A GB21769/47 A GB 21769/47A GB 2176947 A GB2176947 A GB 2176947A GB 628200 A GB628200 A GB 628200A
Authority
GB
United Kingdom
Prior art keywords
relating
telephone systems
line telephone
party line
circuits
Prior art date
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.)
Expired
Application number
GB21769/47A
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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 Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of GB628200A publication Critical patent/GB628200A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/10—Metering calls from calling party, i.e. A-party charged for the communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q5/00—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange
    • H04Q5/02—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange with direct connection for all subscribers, i.e. party-line systems
    • H04Q5/06—Signalling by amplitude or polarity of dc

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Meter Arrangements (AREA)
  • Structure Of Telephone Exchanges (AREA)

Abstract

628,200. Switch covers. WESTERN ELECTRIC CO., Inc. Aug. 7, 1947, No. 21769. Convention date, July 11, 1940. Drawings to Specification. [Class 38(v)] [Also in Group XXXIX] The removal of the dust cover of a twoposition polarized relay which selects one of two metering circuits in a telephone system (see Group XXXIX) opens auxiliary contact springs included in both circuits in order to permit adjustment without danger of false operation.
GB21769/47A 1940-07-11 1947-08-07 Improvements in or relating to party line telephone systems Expired GB628200A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US274092XA 1940-07-11 1940-07-11

Publications (1)

Publication Number Publication Date
GB628200A true GB628200A (en) 1949-08-24

Family

ID=21837570

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21769/47A Expired GB628200A (en) 1940-07-11 1947-08-07 Improvements in or relating to party line telephone systems

Country Status (3)

Country Link
BE (1) BE476311A (en)
CH (1) CH274092A (en)
GB (1) GB628200A (en)

Also Published As

Publication number Publication date
CH274092A (en) 1951-03-15
BE476311A (en)

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