GB1170331A - Telephone Exchange - Google Patents

Telephone Exchange

Info

Publication number
GB1170331A
GB1170331A GB651967A GB651967A GB1170331A GB 1170331 A GB1170331 A GB 1170331A GB 651967 A GB651967 A GB 651967A GB 651967 A GB651967 A GB 651967A GB 1170331 A GB1170331 A GB 1170331A
Authority
GB
United Kingdom
Prior art keywords
extension
display
rung
feb
soon
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
GB651967A
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 GB1170331A publication Critical patent/GB1170331A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0008—Selecting arrangements using relay selectors in the switching stages
    • H04Q3/0012—Selecting arrangements using relay selectors in the switching stages in which the relays are arranged in a matrix configuration
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/57—Arrangements for indicating or recording the number of the calling subscriber at the called subscriber's set

Abstract

1,170,331. Automatic exchange systems. INTERNATIONAL STANDARD ELECTRIC CORP. 10 Feb., 1967 [11 Feb., 1966], No. 6519/67. Heading H4K. In a PABX, certain extensions are provided with an indicator panel which provides a visual display of the number of the calling party. A calling line, e.g. NSt, is connected via the multistage network KF1, KF2 to a service extension SSt, e.g. a hotel waiter. Immediately the connection is set-up or as soon as the wanted extension replies a start circuit SpK applies a signal to the exchange line identifier IdE which determines the identity of the caller and passes it via SpK and an individual wire SL to the called extension's indicator A. During such an identification, the other service extensions are locked out. At the end of the call the display is automatically or manually cancelled. An extension such as FM is rung in case of fire. As soon as the caller hears this extension being rung he may hang-up since identification takes place automatically for fire alarm calls and erasure of the display can only be effected manually. An audible alarm is given.
GB651967A 1966-02-11 1967-02-10 Telephone Exchange Expired GB1170331A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1966ST024986 DE1256717B (en) 1966-02-11 1966-02-11 Circuit arrangement for a telephone branch exchange for hotel or hospital operations with a central identification device

Publications (1)

Publication Number Publication Date
GB1170331A true GB1170331A (en) 1969-11-12

Family

ID=7460358

Family Applications (1)

Application Number Title Priority Date Filing Date
GB651967A Expired GB1170331A (en) 1966-02-11 1967-02-10 Telephone Exchange

Country Status (2)

Country Link
DE (1) DE1256717B (en)
GB (1) GB1170331A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3686440A (en) * 1971-03-26 1972-08-22 Sola Basic Ind Inc Telephone calling-station identification
US3787626A (en) * 1971-04-23 1974-01-22 C Subieta System for automatic identification of calling party{40 s telephone number to receiving party
US4081614A (en) * 1977-04-14 1978-03-28 Rauland-Borg Corporation Supervised single link telephone system
EP0059469A1 (en) * 1981-03-03 1982-09-08 CSELT Centro Studi e Laboratori Telecomunicazioni S.p.A. System for forwarding along a telephone connection the identities of the subscribers involved in that connection

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2714401C2 (en) * 1977-03-31 1985-08-08 Siemens AG, 1000 Berlin und 8000 München Circuit arrangement for telecommunications switching systems, in particular telephone switching systems, with connection-specific cable sets and with identifiers
DE3128529C2 (en) * 1981-07-18 1984-10-31 Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt Method for displaying information at a telephone subscriber station
DE3238770C2 (en) * 1982-10-20 1988-08-18 Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt Telephone with visual display devices

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3686440A (en) * 1971-03-26 1972-08-22 Sola Basic Ind Inc Telephone calling-station identification
US3787626A (en) * 1971-04-23 1974-01-22 C Subieta System for automatic identification of calling party{40 s telephone number to receiving party
US4081614A (en) * 1977-04-14 1978-03-28 Rauland-Borg Corporation Supervised single link telephone system
EP0059469A1 (en) * 1981-03-03 1982-09-08 CSELT Centro Studi e Laboratori Telecomunicazioni S.p.A. System for forwarding along a telephone connection the identities of the subscribers involved in that connection
US4445001A (en) * 1981-03-03 1984-04-24 CELT Centro Studi e Laboratori Telecomunicazioni S.p.A. Circuit arrangement for identifying telephone subscribers

Also Published As

Publication number Publication date
DE1256717B (en) 1967-12-21

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Legal Events

Date Code Title Description
PS Patent sealed
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PCNP Patent ceased through non-payment of renewal fee