GB1222118A - Automatic telephone systems - Google Patents

Automatic telephone systems

Info

Publication number
GB1222118A
GB1222118A GB1129868A GB1129868A GB1222118A GB 1222118 A GB1222118 A GB 1222118A GB 1129868 A GB1129868 A GB 1129868A GB 1129868 A GB1129868 A GB 1129868A GB 1222118 A GB1222118 A GB 1222118A
Authority
GB
United Kingdom
Prior art keywords
subscriber
counter
potential
hook
counters
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
GB1129868A
Other languages
English (en)
Inventor
Jean-Jacques De Buck
Paul Pahud
Alain Poulet
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.)
International Business Machines Corp
Original Assignee
International Business Machines 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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of GB1222118A publication Critical patent/GB1222118A/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
    • 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)
  • Interface Circuits In Exchanges (AREA)
  • Telephonic Communication Services (AREA)
GB1129868A 1967-03-13 1968-03-08 Automatic telephone systems Expired GB1222118A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR6008416 1967-03-13
NL6806825A NL6806825A (de) 1967-03-13 1968-05-14

Publications (1)

Publication Number Publication Date
GB1222118A true GB1222118A (en) 1971-02-10

Family

ID=26214720

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1129868A Expired GB1222118A (en) 1967-03-13 1968-03-08 Automatic telephone systems

Country Status (6)

Country Link
AT (1) AT299322B (de)
BE (1) BE710381A (de)
CH (1) CH469416A (de)
DE (1) DE1562227B2 (de)
GB (1) GB1222118A (de)
NL (1) NL6806825A (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE792415A (fr) * 1971-12-29 1973-03-30 Int E U A Systeme d'exploration des lignes dans un central de telecommunication

Also Published As

Publication number Publication date
DE1562227A1 (de) 1970-03-26
DE1562227B2 (de) 1972-12-21
CH469416A (de) 1969-02-28
BE710381A (de) 1968-06-17
NL6806825A (de) 1969-11-18
AT299322B (de) 1972-05-15

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