GB644861A - Telecommunication exchange - Google Patents

Telecommunication exchange

Info

Publication number
GB644861A
GB644861A GB33274/46A GB3327446A GB644861A GB 644861 A GB644861 A GB 644861A GB 33274/46 A GB33274/46 A GB 33274/46A GB 3327446 A GB3327446 A GB 3327446A GB 644861 A GB644861 A GB 644861A
Authority
GB
United Kingdom
Prior art keywords
pulses
nov
calling line
telecommunication exchange
line
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
GB33274/46A
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 GB644861A publication Critical patent/GB644861A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
    • 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
    • H04Q3/52—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker using static devices in switching stages, e.g. electronic switching arrangements
    • H04Q3/526—Optical switching systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Telephonic Communication Services (AREA)

Abstract

644,861. Automatic exchange systems. STANDARD TELEPHONES & CABLES, Ltd. Nov. 8, 1946, No. 33274. Convention date, Nov. 14, 1945. Drawings to Specification. [Class 40 (iv)] In an exchange system each calling line initiates and modulates a series of pulses having a position in a time cycle individual to the calling line, a connection to a called line being established by modulations of the pulses and subsequently maintained by the pulses themselves. The invention is described with reference to a system identical with one of the embodiments described in Specification 644,571, which claims other features.
GB33274/46A 1945-11-14 1946-11-08 Telecommunication exchange Expired GB644861A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US644861XA 1945-11-14 1945-11-14

Publications (1)

Publication Number Publication Date
GB644861A true GB644861A (en) 1950-10-18

Family

ID=22056318

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33274/46A Expired GB644861A (en) 1945-11-14 1946-11-08 Telecommunication exchange

Country Status (3)

Country Link
FR (2) FR930578A (en)
GB (1) GB644861A (en)
NL (1) NL69273C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL163817B (en) * 1949-10-26 Huels Chemische Werke Ag PROCESS FOR PREPARATION OF PREPARATIONS CONTAINING POLYBUTENE-1 AND A FILLER.

Also Published As

Publication number Publication date
FR930578A (en) 1948-01-29
FR930903A (en) 1948-02-12
NL69273C (en)

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