GB747562A - Improvements in or relating to telephone or telegraph systems - Google Patents

Improvements in or relating to telephone or telegraph systems

Info

Publication number
GB747562A
GB747562A GB869853A GB869853A GB747562A GB 747562 A GB747562 A GB 747562A GB 869853 A GB869853 A GB 869853A GB 869853 A GB869853 A GB 869853A GB 747562 A GB747562 A GB 747562A
Authority
GB
United Kingdom
Prior art keywords
relay
negative battery
operates
metering signal
wire
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
GB869853A
Inventor
John Scowcroft
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.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB869853A priority Critical patent/GB747562A/en
Publication of GB747562A publication Critical patent/GB747562A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/14—Charging, metering or billing arrangements for data wireline or wireless communications
    • H04L12/1432—Metric aspects
    • H04L12/1439—Metric aspects time-based
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/14—Charging, metering or billing arrangements for data wireline or wireless communications
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Meter Arrangements (AREA)

Abstract

747,562. Automatic exchange systems. GENERAL ELECTRIC CO., Ltd. Feb. 16, 1954 [March 30, 1953], No. 8698/53. Class 40 (4). Apparatus is provided which produces repeated metering of a connection at the end of each of a number of equal periods of time, in response .to the normal metering signal when the called party answers. Application of the usual positive metering signal (by means not shown) to the P wire (Fig. 1) operates the subscriber's meter (not shown) and also energizes the start relay ST, which locks up. Negative battery is thus connected to the cathode of VI, and the condenser C1 previously charged over back ST discharges through R2. After a time determined by the values of C1 and R2, the valve VI conducts, whereupon relay A operates and applies a further metering signal to the P wire. Relay A also connects negative battery to C1 (which is recharged) and V1 (which is cut off). Relay A then restores and the cycle is repeated until, on termination of the call, relay B releases followed by ST. In a second embodiment, Fig. 2, operation of ST replaces the negative battery normally connected to the striker of cold cathode tube T1 by a connection to an impulsing machine supplying positive impulses. After a time dependent upon the values of C1 and R2 and the make-to-break ratio of the impulses, C1 charges sufficiently to fire T1. Relay A then operates, applies a further metering signal to the P wire, connects the striker of T1 to negative battery, and its cathode to positive battery. Tube T1 is extinguished and relay A restores.
GB869853A 1953-03-30 1953-03-30 Improvements in or relating to telephone or telegraph systems Expired GB747562A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB869853A GB747562A (en) 1953-03-30 1953-03-30 Improvements in or relating to telephone or telegraph systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB869853A GB747562A (en) 1953-03-30 1953-03-30 Improvements in or relating to telephone or telegraph systems

Publications (1)

Publication Number Publication Date
GB747562A true GB747562A (en) 1956-04-11

Family

ID=9857521

Family Applications (1)

Application Number Title Priority Date Filing Date
GB869853A Expired GB747562A (en) 1953-03-30 1953-03-30 Improvements in or relating to telephone or telegraph systems

Country Status (1)

Country Link
GB (1) GB747562A (en)

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