GB1057218A - Improvements in or relating to telephone exchanges - Google Patents

Improvements in or relating to telephone exchanges

Info

Publication number
GB1057218A
GB1057218A GB4173765A GB4173765A GB1057218A GB 1057218 A GB1057218 A GB 1057218A GB 4173765 A GB4173765 A GB 4173765A GB 4173765 A GB4173765 A GB 4173765A GB 1057218 A GB1057218 A GB 1057218A
Authority
GB
United Kingdom
Prior art keywords
lines
subscribers
marker
register
aid
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
GB4173765A
Inventor
David Gerald Bryan
David Livingstone Benson
John Spencer Arnold
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 GB4173765A priority Critical patent/GB1057218A/en
Publication of GB1057218A publication Critical patent/GB1057218A/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
    • H04Q3/54—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised
    • H04Q3/545—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised using a stored programme

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)

Abstract

1,057,218. Automatic exchange systems. STANDARD TELEPHONE & CABLES Ltd., and AUTOMATIC TELEPHONE & ELECTRIC CO. Ltd. Oct. 1, 1965, No. 41737/65. Heading H4K. In an exchange employing stages A, B, C of matrix switches, e.g. of the reed relay type, in which the setting up of connections is supervised by control units 8, the incoming lines, both subscribers' lines and junctions, are scanned for calling conditions, and when such a condition is found an associated cyclic store 3 sends the identity of the line and of its class of service to an idle control unit 8. The latter with the aid of a route choice circuit 7 and marker 6 extends the calling line to a register 5, which in accordance with the dialled information it receives tells the control unit 8 of the requirements, and the connection is established with the aid of a route choice circuit 7 and a marker 6. The switching equipment may be sectionalized in the manner described in Specifications 989,336 and 999,945. The cyclic store 3 may scan subscribers' lines, incoming junctions and register terminations &c. at different rates, and may comprise an array of ring cores which deliver information in a 2-outof-5 code.
GB4173765A 1965-10-01 1965-10-01 Improvements in or relating to telephone exchanges Expired GB1057218A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4173765A GB1057218A (en) 1965-10-01 1965-10-01 Improvements in or relating to telephone exchanges

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4173765A GB1057218A (en) 1965-10-01 1965-10-01 Improvements in or relating to telephone exchanges

Publications (1)

Publication Number Publication Date
GB1057218A true GB1057218A (en) 1967-02-01

Family

ID=10421146

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4173765A Expired GB1057218A (en) 1965-10-01 1965-10-01 Improvements in or relating to telephone exchanges

Country Status (1)

Country Link
GB (1) GB1057218A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3723661A (en) * 1971-04-26 1973-03-27 Bell Telephone Labor Inc Multifunctional scanner-counter circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3723661A (en) * 1971-04-26 1973-03-27 Bell Telephone Labor Inc Multifunctional scanner-counter circuit

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