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GB1360509A - Telephone intercommunication system - Google Patents

Telephone intercommunication system

Info

Publication number
GB1360509A
GB1360509A GB5766872A GB5766872A GB1360509A GB 1360509 A GB1360509 A GB 1360509A GB 5766872 A GB5766872 A GB 5766872A GB 5766872 A GB5766872 A GB 5766872A GB 1360509 A GB1360509 A GB 1360509A
Authority
GB
United Kingdom
Prior art keywords
intercommunication system
telephone intercommunication
telephone
heading
nov
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
GB5766872A
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 Standard Electric Corp
Original Assignee
International Standard Electric 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 Standard Electric Corp filed Critical International Standard Electric Corp
Publication of GB1360509A publication Critical patent/GB1360509A/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
    • H04Q3/52—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
    • H04Q3/521—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 using semiconductors in the switching stages

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Telephonic Communication Services (AREA)
  • Telephone Function (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)

Abstract

1360509 Automatic exchange systems INTERNATIONAL STANDARD ELECTRIC CORP 28 Oct 1971 [2 Nov 1970] 57668/72 Divided out of 1360508 Heading H4K The Specification is identical to that of the parent Specification 1,360,508. The claims relate to the nature of the crosspoint matrix.
GB5766872A 1970-11-02 1971-10-28 Telephone intercommunication system Expired GB1360509A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA097,178A CA963133A (en) 1970-11-02 1970-11-02 Telephone intercommunicating system

Publications (1)

Publication Number Publication Date
GB1360509A true GB1360509A (en) 1974-07-17

Family

ID=4087932

Family Applications (2)

Application Number Title Priority Date Filing Date
GB5766872A Expired GB1360509A (en) 1970-11-02 1971-10-28 Telephone intercommunication system
GB5008471A Expired GB1360508A (en) 1970-11-02 1971-10-28 Telephone intercommunication system

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB5008471A Expired GB1360508A (en) 1970-11-02 1971-10-28 Telephone intercommunication system

Country Status (6)

Country Link
AU (1) AU464115B2 (en)
BE (1) BE774799A (en)
CA (1) CA963133A (en)
DE (1) DE2154237C3 (en)
ES (1) ES396581A1 (en)
GB (2) GB1360509A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5940358B2 (en) * 1978-10-18 1984-09-29 日本電信電話株式会社 Call path switch circuit
DE3215757A1 (en) * 1982-04-28 1983-11-03 Krone Gmbh, 1000 Berlin Internal connection switch for in-house telephone or PABX telecommunications systems

Also Published As

Publication number Publication date
DE2154237A1 (en) 1972-05-04
DE2154237C3 (en) 1975-09-04
CA963133A (en) 1975-02-18
GB1360508A (en) 1974-07-17
AU464115B2 (en) 1975-08-14
BE774799A (en) 1972-03-01
AU3521271A (en) 1973-05-10
ES396581A1 (en) 1974-05-16
DE2154237B2 (en) 1975-01-16

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee