GB539823A - Improvements in electrical signalling systems - Google Patents

Improvements in electrical signalling systems

Info

Publication number
GB539823A
GB539823A GB5349/40A GB534940A GB539823A GB 539823 A GB539823 A GB 539823A GB 5349/40 A GB5349/40 A GB 5349/40A GB 534940 A GB534940 A GB 534940A GB 539823 A GB539823 A GB 539823A
Authority
GB
United Kingdom
Prior art keywords
common
leads
digits
relay
digit
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
GB5349/40A
Other languages
English (en)
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.)
Automatic Telephone and Electric Co Ltd
Original Assignee
Automatic Telephone and 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
Priority to BE468235D priority Critical patent/BE468235A/xx
Priority to NL63940D priority patent/NL63940C/xx
Application filed by Automatic Telephone and Electric Co Ltd filed Critical Automatic Telephone and Electric Co Ltd
Priority to GB5349/40A priority patent/GB539823A/en
Priority to US380226A priority patent/US2292977A/en
Publication of GB539823A publication Critical patent/GB539823A/en
Priority to FR933091D priority patent/FR933091A/fr
Priority to DEP31347D priority patent/DE826019C/de
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
    • H04M15/08—Metering calls to called party, i.e. B-party charged for the communication

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Interface Circuits In Exchanges (AREA)
GB5349/40A 1940-03-23 1940-03-23 Improvements in electrical signalling systems Expired GB539823A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
BE468235D BE468235A (enrdf_load_stackoverflow) 1940-03-23
NL63940D NL63940C (enrdf_load_stackoverflow) 1940-03-23
GB5349/40A GB539823A (en) 1940-03-23 1940-03-23 Improvements in electrical signalling systems
US380226A US2292977A (en) 1940-03-23 1941-02-24 Electrical signaling system
FR933091D FR933091A (fr) 1940-03-23 1946-08-29 Perfectionnements aux systèmes de signalisation électrique
DEP31347D DE826019C (de) 1940-03-23 1949-01-11 Schaltungsanordnung zur UEbertragung von Erkennungszeichen von Leitungen oder Punkten im Verbindungsaufbau von Fernmelde-anlagen, insbesondere von Fernsprechanlagen mit Waehlerbetrieb

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5349/40A GB539823A (en) 1940-03-23 1940-03-23 Improvements in electrical signalling systems

Publications (1)

Publication Number Publication Date
GB539823A true GB539823A (en) 1941-09-25

Family

ID=9794429

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5349/40A Expired GB539823A (en) 1940-03-23 1940-03-23 Improvements in electrical signalling systems

Country Status (6)

Country Link
US (1) US2292977A (enrdf_load_stackoverflow)
BE (1) BE468235A (enrdf_load_stackoverflow)
DE (1) DE826019C (enrdf_load_stackoverflow)
FR (1) FR933091A (enrdf_load_stackoverflow)
GB (1) GB539823A (enrdf_load_stackoverflow)
NL (1) NL63940C (enrdf_load_stackoverflow)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE464041A (enrdf_load_stackoverflow) * 1945-03-23
BE465859A (enrdf_load_stackoverflow) * 1945-06-13
BE468507A (enrdf_load_stackoverflow) * 1945-06-13
GB614177A (en) * 1946-05-25 1948-12-10 Automatic Telephone & Elect Improvements in or relating to electrical signalling systems
BE473455A (enrdf_load_stackoverflow) * 1946-07-25
US2600502A (en) * 1948-04-24 1952-06-17 Bell Telephone Labor Inc Calling line and private branch exchange line identifier
FR1040574A (fr) * 1950-06-02 1953-10-16 Int Standard Electric Corp Systèmes de commutation électronique

Also Published As

Publication number Publication date
DE826019C (de) 1951-12-27
NL63940C (enrdf_load_stackoverflow)
FR933091A (fr) 1948-04-09
BE468235A (enrdf_load_stackoverflow)
US2292977A (en) 1942-08-11

Similar Documents

Publication Publication Date Title
GB539823A (en) Improvements in electrical signalling systems
US574707A (en) bowman
GB683794A (en) Telephone station identifier circuit
US2416102A (en) Impulse testing apparatus
US2367522A (en) Signaling system
US2367042A (en) Signaling apparatus
US2462074A (en) Biasing potential switching system
US2376225A (en) Telegraph transmission measuring system
US1996213A (en) Service observing system for telephone exchanges
US2547804A (en) Telephone line identification system
US2332451A (en) Telegraph trouble indicator circuit
US2566010A (en) Telephone system
US2425818A (en) Signaling apparatus
GB683911A (en) Improvements in station identification circuits for telephone systems
US2345953A (en) Telegraph repeater
US1862587A (en) Signaling arrangement for telephone systems
US1758056A (en) Signaling circuit
USRE18828E (en) A corpo
US2532750A (en) Calling line identifier having display device at operator's position
US1827734A (en) Telephone system
US2413001A (en) Communication system
US1840359A (en) Metering and timing apparatus for telephone systems
US1696246A (en) Telegraph system
US2710891A (en) Telegraph service board circuits
US1512907A (en) Assig-nor to western electric com