GB504237A - Improvements in or relating to electric signalling systems - Google Patents

Improvements in or relating to electric signalling systems

Info

Publication number
GB504237A
GB504237A GB1880238A GB1880238A GB504237A GB 504237 A GB504237 A GB 504237A GB 1880238 A GB1880238 A GB 1880238A GB 1880238 A GB1880238 A GB 1880238A GB 504237 A GB504237 A GB 504237A
Authority
GB
United Kingdom
Prior art keywords
equipment
acknowledgment
line
outgoing
toll
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
GB1880238A
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
Priority to GB1880238A priority Critical patent/GB504237A/en
Publication of GB504237A publication Critical patent/GB504237A/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)
  • Mobile Radio Communication Systems (AREA)
  • Structure Of Telephone Exchanges (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)

Abstract

504,237. Automatic exchange systems. STANDARD TELEPHONES & CABLES, Ltd., WRIGHT, E. P. G., and NEILSON, C.B.V. Oct. 19, 1937, No. 18802/38. Divided out of 489,545. Drawings to Specification. [Class 40 (iv)] The Specification describes a toll system dentical with that described in Specification 489,545 but the claims are directed to a system in which supervisory signalling equipment is associated with the ends of a toll line and digit storage and transmitting equipment is associated with the outgoing end, wherein a calling signal from the outgoing equipment is followed by an acknowledgment (" proceed-to-dial signal ") from the incoming equipment and in which (a) the calling and acknowledgment signals are of different frequency, (b) when the toll line is an intermediate or final line in a connection, digit transmission from the outgoing equipment is delayed until the acknowledgment is received, the storage equipment, in the meantime, receiving digits transmitted over the preceding line, and (c) the equipments at the ends of a both-way line are differently arranged so that in the event of simultaneous seizure at each end and due to the non-transmission of acknowledgments, the equipment at one end acts automatically as if it had received an acknowledgment and the equipment at the other end sends a busy signal.
GB1880238A 1937-01-25 1937-10-19 Improvements in or relating to electric signalling systems Expired GB504237A (en)

Priority Applications (1)

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

Applications Claiming Priority (2)

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

Publications (1)

Publication Number Publication Date
GB504237A true GB504237A (en) 1939-04-19

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
GB1880338A Expired GB489609A (en) 1937-01-25 1937-01-25 Improvements in or relating to electrical communication exchange systems
GB255237A Expired GB489545A (en) 1937-01-25 1937-01-25 Improvements in or relating to electrical communication systems
GB1880238A Expired GB504237A (en) 1937-01-25 1937-10-19 Improvements in or relating to electric signalling systems

Family Applications Before (3)

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
GB1880338A Expired GB489609A (en) 1937-01-25 1937-01-25 Improvements in or relating to electrical communication exchange systems
GB255237A Expired GB489545A (en) 1937-01-25 1937-01-25 Improvements in or relating to electrical communication systems

Country Status (3)

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

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE476047A (en) * 1939-08-16
BE447777A (en) * 1941-11-03
BE467392A (en) * 1944-05-05
US2594719A (en) * 1945-05-19 1952-04-29 Automatic Elect Lab Voice-frequency telephone signaling system
BE476049A (en) * 1946-04-15
US2564378A (en) * 1946-05-06 1951-08-14 Punch Engineering Pty Ltd Carrier system signaling circuits
NL68563C (en) * 1946-06-15
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
US2566009A (en) * 1947-12-12 1951-08-28 Automatic Elect Lab Interexchange switching telephone system
GB656118A (en) * 1948-01-09 1951-08-15 Ericsson Telefon Ab L M Improvements in or relating to automatic telephone systems
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
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

Also Published As

Publication number Publication date
GB489755A (en) 1938-07-25
GB489545A (en) 1938-07-25
FR832598A (en) 1938-09-29
DE944196C (en) 1956-06-07
DE896667C (en) 1954-01-18
GB489609A (en) 1938-07-25

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