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GB1028177A - Improvements in or relating to automatic switching systems - Google Patents

Improvements in or relating to automatic switching systems

Info

Publication number
GB1028177A
GB1028177A GB4651963A GB4651963A GB1028177A GB 1028177 A GB1028177 A GB 1028177A GB 4651963 A GB4651963 A GB 4651963A GB 4651963 A GB4651963 A GB 4651963A GB 1028177 A GB1028177 A GB 1028177A
Authority
GB
United Kingdom
Prior art keywords
call
exchanges
exchange
sender
memories
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
GB4651963A
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Publication of GB1028177A publication Critical patent/GB1028177A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0004—Selecting arrangements using crossbar selectors in the switching stages

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Exchange Systems With Centralized Control (AREA)

Abstract

1,028,177. Automatic exchange systems. NIPPON TELEGRAPH & TELEPHONE PUBLIC CORPORATION. Nov. 25, 1963 [Nov. 30, 1962], No. 46519/63. Heading H4K. A tandem call through exchanges A, B, C is established with the assistance of memories MM at those exchanges which are inter-connected by auxiliary junctions. The memory at each exchange records particulars of the call and controls the selective switching thereat with the aid of a marker M. When the call has been extended as far as exchange C it may be completed by impulsing from a sender OS at C or by multifrequency transmission from the register-sender IRS 1 at A. At the conclusion of the call the connection is maintained so long as the junctions are not required for calls in other directions, so that a fresh call from A to C requires only the use of the memories MM at those exchanges.
GB4651963A 1962-11-30 1963-11-25 Improvements in or relating to automatic switching systems Expired GB1028177A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5267262 1962-11-30

Publications (1)

Publication Number Publication Date
GB1028177A true GB1028177A (en) 1966-05-04

Family

ID=12921346

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4651963A Expired GB1028177A (en) 1962-11-30 1963-11-25 Improvements in or relating to automatic switching systems

Country Status (2)

Country Link
DE (1) DE1222547B (en)
GB (1) GB1028177A (en)

Also Published As

Publication number Publication date
DE1222547B (en) 1966-08-11

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