GB548932A - Telephone systems - Google Patents

Telephone systems

Info

Publication number
GB548932A
GB548932A GB11701/41A GB1170141A GB548932A GB 548932 A GB548932 A GB 548932A GB 11701/41 A GB11701/41 A GB 11701/41A GB 1170141 A GB1170141 A GB 1170141A GB 548932 A GB548932 A GB 548932A
Authority
GB
United Kingdom
Prior art keywords
tubes
auxiliary
tens
thousands
group
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
GB11701/41A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables 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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB548932A publication Critical patent/GB548932A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • H01J17/02—Details
    • H01J17/30—Igniting arrangements
    • 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)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
GB11701/41A 1940-09-20 1941-09-12 Telephone systems Expired GB548932A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US357518A US2267950A (en) 1940-09-20 1940-09-20 Telephone system
US388221A US2319424A (en) 1940-09-20 1941-04-12 Telephone system

Publications (1)

Publication Number Publication Date
GB548932A true GB548932A (en) 1942-10-29

Family

ID=26999687

Family Applications (2)

Application Number Title Priority Date Filing Date
GB11701/41A Expired GB548932A (en) 1940-09-20 1941-09-12 Telephone systems
GB9605/42A Expired GB554091A (en) 1940-09-20 1942-07-10 Telephone systems

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB9605/42A Expired GB554091A (en) 1940-09-20 1942-07-10 Telephone systems

Country Status (5)

Country Link
US (3) US2267950A (forum.php)
BE (1) BE477685A (forum.php)
CH (1) CH273261A (forum.php)
GB (2) GB548932A (forum.php)
NL (1) NL74027C (forum.php)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL57799C (nl) * 1941-03-07 1945-09-15 Bell Telephone Mfg Schakeling voor het besturen van een apparatuur in seinstelsels, in het bijzonder van de instelling van schakelaars in centrales voor telefoonstelsels
NL58889C (forum.php) * 1941-04-25
US2490038A (en) * 1941-06-26 1949-12-06 Int Standard Electric Corp Electrical signaling system
BE447417A (forum.php) * 1941-08-21
US2586704A (en) * 1942-08-06 1952-02-19 Automatic Elect Lab Message data recording telephone system
US2698880A (en) * 1943-05-05 1955-01-04 American Telephone & Telegraph Calling line identifier
BE473095A (forum.php) * 1946-05-17
US2532750A (en) * 1946-08-03 1950-12-05 Automatic Telephone & Elect Calling line identifier having display device at operator's position
US2532926A (en) * 1947-02-14 1950-12-05 Automatic Elect Lab Party line metering, including selection of the meter prior to signaling the operator
NL79795C (forum.php) * 1947-08-22
US2594923A (en) * 1948-06-16 1952-04-29 Bell Telephone Labor Inc Call data recording telephone system
US2633498A (en) * 1948-12-29 1953-03-31 Bell Telephone Labor Inc Selecting and two-way translating system
US2639330A (en) * 1949-03-04 1953-05-19 Automatic Elect Lab Calling line identification apparatus
BE495130A (forum.php) * 1949-04-26
US2594505A (en) * 1949-12-09 1952-04-29 Bell Telephone Labor Inc Calling line identification and registering system
BE500226A (forum.php) * 1949-12-24
US2607891A (en) * 1950-06-10 1952-08-19 Bell Telephone Labor Inc Translating circuits utilizing glow discharge devices

Also Published As

Publication number Publication date
BE477685A (forum.php)
CH273261A (de) 1951-01-31
NL74027C (forum.php)
US2319424A (en) 1943-05-18
USRE23388E (en) 1951-07-10
US2267950A (en) 1941-12-30
GB554091A (en) 1943-06-18

Similar Documents

Publication Publication Date Title
GB548932A (en) Telephone systems
US2252766A (en) Signaling system
US2484612A (en) Directory number calling line identifier
GB551328A (en) Improvements in or relating to telecommunication exchange systems
US3566004A (en) Color-coded telephone conductor terminal
US2265844A (en) Calling line identification circuit
US2348626A (en) Channel selecting circuit
US2667538A (en) Automatic telephone ticketing system
US2284870A (en) Telephone system
US2850576A (en) Line concentrator system
US2924666A (en) Telephone system calling stations identifier
GB963900A (en) Telephone line concentrators or the like
US2068711A (en) Stock quotation system
GB970938A (en) Automatic telecommunication exchange systems
US2672518A (en) Station identifier
US3111659A (en) Translating apparatus as employed in automatic telephone and like systems
US2306173A (en) Telephone system
US2306729A (en) Signaling system
DE955786C (de) Schaltungsanordnung zur Indentifizierung von Leitungen
US2332878A (en) Dial operated crossbar selector
US2299898A (en) Telephone system
US2619545A (en) Telephone calling line identification and recording system
US2298695A (en) Selecting system
GB683911A (en) Improvements in station identification circuits for telephone systems
US2822982A (en) Code translating system