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GB489609A - Improvements in or relating to electrical communication exchange systems - Google Patents

Improvements in or relating to electrical communication exchange systems

Info

Publication number
GB489609A
GB489609A GB1880338A GB1880338A GB489609A GB 489609 A GB489609 A GB 489609A GB 1880338 A GB1880338 A GB 1880338A GB 1880338 A GB1880338 A GB 1880338A GB 489609 A GB489609 A GB 489609A
Authority
GB
United Kingdom
Prior art keywords
relating
exchange systems
electrical communication
communication exchange
exchange
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
GB1880338A
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 GB489609A publication Critical patent/GB489609A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
    • H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
    • H04Q1/45—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0016—Arrangements providing connection between exchanges

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Meter Arrangements (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Structure Of Telephone Exchanges (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

489,609. Automatic exchange systems. STANDARD TELEPHONES & CABLES, Ltd., WRIGHT, E. P. C., and NEILSON, C. B. V. Jan. 25, 1937, No. 18803/38. Divided out of 489,545. Drawings to Specification. [Class 40 (iv)] The Specification describes a toll system identical with that described in Specification 489,545, but the claims are directed to the release, in response to a transfer signal from a calling exchange, of a connection outgoing from a toll exchange, the circuits thereat being also prepared so that a new connection may be set up. The Provisional Specification refers to Specification 479,881.
GB1880338A 1937-01-25 1937-01-25 Improvements in or relating to electrical communication exchange systems Expired GB489609A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB255237A GB489545A (en) 1937-01-25 1937-01-25 Improvements in or relating to electrical communication systems

Publications (1)

Publication Number Publication Date
GB489609A true GB489609A (en) 1938-07-25

Family

ID=9741597

Family Applications (4)

Application Number Title Priority Date Filing Date
GB1880438A Expired GB489755A (en) 1937-01-25 1937-01-25 Improvements in or relating to electric signalling systems
GB255237A Expired GB489545A (en) 1937-01-25 1937-01-25 Improvements in or relating to electrical communication systems
GB1880338A Expired GB489609A (en) 1937-01-25 1937-01-25 Improvements in or relating to electrical communication exchange systems
GB1880238A Expired GB504237A (en) 1937-01-25 1937-10-19 Improvements in or relating to electric signalling systems

Family Applications Before (2)

Application Number Title Priority Date Filing Date
GB1880438A Expired GB489755A (en) 1937-01-25 1937-01-25 Improvements in or relating to electric signalling systems
GB255237A Expired GB489545A (en) 1937-01-25 1937-01-25 Improvements in or relating to electrical communication systems

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB1880238A Expired GB504237A (en) 1937-01-25 1937-10-19 Improvements in or relating to electric signalling systems

Country Status (3)

Country Link
DE (2) DE944196C (en)
FR (1) FR832598A (en)
GB (4) GB489755A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2486100A (en) * 1944-05-05 1949-10-25 Automatic Elect Lab Voice frequency signaling circuits for telephone systems
US2536825A (en) * 1948-03-26 1951-01-02 Stromberg Carlson Co Multiplex telephony
US2566009A (en) * 1947-12-12 1951-08-28 Automatic Elect Lab Interexchange switching telephone system
US2567115A (en) * 1949-08-20 1951-09-04 Automatic Elect Lab Electronic director
US2567148A (en) * 1946-06-15 1951-09-04 Nederlanden Staat Telephone signaling device
US2593512A (en) * 1939-08-16 1952-04-22 Int Standard Electric Corp Alternating current telephone signaling system
US2594719A (en) * 1945-05-19 1952-04-29 Automatic Elect Lab Voice-frequency telephone signaling system
US2610255A (en) * 1941-11-03 1952-09-09 Int Standard Electric Corp Electrical signaling system
US2624806A (en) * 1946-04-15 1953-01-06 Int Standard Electric Corp Carrier telephone system and supervisory signaling arrangement therefor
US2693526A (en) * 1949-06-15 1954-11-02 Automatic Elect Lab Single channel single frequency mobile radio telephone system

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2564378A (en) * 1946-05-06 1951-08-14 Punch Engineering Pty Ltd Carrier system signaling circuits
US2495191A (en) * 1946-08-02 1950-01-17 Kellogg Switchboard & Supply String-of-exchanges telephone system
GB654639A (en) * 1947-02-07 1951-06-27 Standard Telephones Cables Ltd Improvements in or relating to electric signalling systems
US2579530A (en) * 1947-04-29 1951-12-25 Int Standard Electric Corp Four-wire to two-wire connecting circuit
GB656118A (en) * 1948-01-09 1951-08-15 Ericsson Telefon Ab L M Improvements in or relating to automatic telephone systems
GB852892A (en) * 1956-03-13 1960-11-02 Siemens Edison Swan Ltd Improvements relating to telephone systems
NL267512A (en) * 1960-07-25
CN113672424B (en) * 2021-08-19 2024-06-14 支付宝(杭州)信息技术有限公司 Method and device for repairing abnormal task

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1573991A (en) * 1924-12-17 1926-02-23 Western Electric Co Signaling system

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2593512A (en) * 1939-08-16 1952-04-22 Int Standard Electric Corp Alternating current telephone signaling system
US2610255A (en) * 1941-11-03 1952-09-09 Int Standard Electric Corp Electrical signaling system
US2486100A (en) * 1944-05-05 1949-10-25 Automatic Elect Lab Voice frequency signaling circuits for telephone systems
US2594719A (en) * 1945-05-19 1952-04-29 Automatic Elect Lab Voice-frequency telephone signaling system
US2624806A (en) * 1946-04-15 1953-01-06 Int Standard Electric Corp Carrier telephone system and supervisory signaling arrangement therefor
US2567148A (en) * 1946-06-15 1951-09-04 Nederlanden Staat Telephone signaling device
US2566009A (en) * 1947-12-12 1951-08-28 Automatic Elect Lab Interexchange switching telephone system
US2536825A (en) * 1948-03-26 1951-01-02 Stromberg Carlson Co Multiplex telephony
US2693526A (en) * 1949-06-15 1954-11-02 Automatic Elect Lab Single channel single frequency mobile radio telephone system
US2567115A (en) * 1949-08-20 1951-09-04 Automatic Elect Lab Electronic director

Also Published As

Publication number Publication date
DE944196C (en) 1956-06-07
FR832598A (en) 1938-09-29
GB489755A (en) 1938-07-25
DE896667C (en) 1954-01-18
GB489545A (en) 1938-07-25
GB504237A (en) 1939-04-19

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