GB827286A - Improvements in or relating to telephone or like systems - Google Patents

Improvements in or relating to telephone or like systems

Info

Publication number
GB827286A
GB827286A GB2939755A GB2939755A GB827286A GB 827286 A GB827286 A GB 827286A GB 2939755 A GB2939755 A GB 2939755A GB 2939755 A GB2939755 A GB 2939755A GB 827286 A GB827286 A GB 827286A
Authority
GB
United Kingdom
Prior art keywords
register
pulses
test
sum
counter
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
GB2939755A
Inventor
George Thomas Baker
Victor Edmund Mann
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.)
British Telecommunications PLC
British Telecommunications Research Ltd
Original Assignee
British Telecommunications PLC
British Telecommunications Research 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 British Telecommunications PLC, British Telecommunications Research Ltd filed Critical British Telecommunications PLC
Priority to GB2939755A priority Critical patent/GB827286A/en
Priority to DEB42090A priority patent/DE1047263B/en
Publication of GB827286A publication Critical patent/GB827286A/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
    • H04M15/04—Recording calls, or communications in printed, perforated or other permanent form

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Meter Arrangements (AREA)

Abstract

827,286. Automatic exchange systems. BRITISH TELECOMMUNICATIONS RESEARCH Ltd. Oct. 11, 1956 [Oct. 14, 1955], No. 29397/55. Class 40 (4). Metering is performed on a magnetic drum, one storage area of which is reserved for test purposes. Periodically pulses from a source P, Fig. 4, are registered in the test area and simultaneously on an electromagnetic counter EC. The entries in the test area and the counter EC are compared at CS and any discrepancy brings up an alarm A. The counter comprises two uniselectors, Fig. 1, wired so that they open or close gates 1-19 so as to produce a series of pulses TX1-TX10 on leads SUM and SUM representing in binary form the number of pulses provided by the source P. After each step of the counter a time pulse TPM, Fig. 2, occurs. A further time pulse TZN is supplied for each register which is to be tested. The number represented by the pulses on leads SUM, SUM is compared with the number signalled by the register to leads SLM, SLM and any discrepancy sets up electronic relay MAA to reverse relay CR and operate ate an alarm and connect up stand-by equipment. When the fault has been rectified key KAA may be operated to restore MAA and CR. Test register full. When 1 is detected in area TXI relay MBA, Fig. 3, is operated, but is restored if 0 is detected in any subsequent area. If the test register is full MBA remains operated until pulse TZN occurs after the whole register has been scanned. MBA then applies potential to terminal RF to initiate transfer of the information to a punched tape. The pulses from source P may be at 2-minute intervals or may be slightly less so as to fill the register every 24 hours. The magnetic drum may be of the type described in Specification 723,148.
GB2939755A 1955-10-14 1955-10-14 Improvements in or relating to telephone or like systems Expired GB827286A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB2939755A GB827286A (en) 1955-10-14 1955-10-14 Improvements in or relating to telephone or like systems
DEB42090A DE1047263B (en) 1955-10-14 1956-10-11 Circuit arrangement for testing the fee recording devices in telephone systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2939755A GB827286A (en) 1955-10-14 1955-10-14 Improvements in or relating to telephone or like systems

Publications (1)

Publication Number Publication Date
GB827286A true GB827286A (en) 1960-02-03

Family

ID=10290929

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2939755A Expired GB827286A (en) 1955-10-14 1955-10-14 Improvements in or relating to telephone or like systems

Country Status (2)

Country Link
DE (1) DE1047263B (en)
GB (1) GB827286A (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE929376C (en) * 1953-02-20 1955-06-27 Kabelindustrie Ag Circuit arrangement for testing switching devices in telecommunications, in particular telephone systems

Also Published As

Publication number Publication date
DE1047263B (en) 1958-12-24

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