ES8203183A1 - Improvements in or relating to electronic intercommunication installation - Google Patents

Improvements in or relating to electronic intercommunication installation

Info

Publication number
ES8203183A1
ES8203183A1 ES501298A ES501298A ES8203183A1 ES 8203183 A1 ES8203183 A1 ES 8203183A1 ES 501298 A ES501298 A ES 501298A ES 501298 A ES501298 A ES 501298A ES 8203183 A1 ES8203183 A1 ES 8203183A1
Authority
ES
Spain
Prior art keywords
relating
intercommunication installation
electronic intercommunication
electronic
installation
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
ES501298A
Other languages
Spanish (es)
Other versions
ES501298A0 (en
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.)
ALE International SAS
Original Assignee
La Telephone Industrielle et Commerciale Telic Alcatel SA
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 La Telephone Industrielle et Commerciale Telic Alcatel SA filed Critical La Telephone Industrielle et Commerciale Telic Alcatel SA
Publication of ES501298A0 publication Critical patent/ES501298A0/en
Publication of ES8203183A1 publication Critical patent/ES8203183A1/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/002—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems
    • H04M9/005—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems with subscriber controlled access to an exchange line
    • H04M9/007—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems with subscriber controlled access to an exchange line wherein the key telephone sets are star-connected to a central unit by a limited number of lines

Abstract

There is provided an electronic intercommunication installation which comprises a central unit 1 connected to a plurality of intercommunication terminals 2, 3 by a first star scheme comprising three connection pairs per terminal. The control unit is connected to a plurality of external lines 4, 5 by a second star scheme.
ES501298A 1980-04-16 1981-04-13 Improvements in or relating to electronic intercommunication installation Expired ES8203183A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8008671A FR2481033B1 (en) 1980-04-16 1980-04-16 ELECTRONIC INTERCOMMUNICATION INSTALLATION

Publications (2)

Publication Number Publication Date
ES501298A0 ES501298A0 (en) 1982-03-01
ES8203183A1 true ES8203183A1 (en) 1982-03-01

Family

ID=9241034

Family Applications (1)

Application Number Title Priority Date Filing Date
ES501298A Expired ES8203183A1 (en) 1980-04-16 1981-04-13 Improvements in or relating to electronic intercommunication installation

Country Status (13)

Country Link
JP (1) JPS579190A (en)
BE (1) BE888435A (en)
BR (1) BR8102253A (en)
DE (1) DE3114977A1 (en)
DK (1) DK170081A (en)
ES (1) ES8203183A1 (en)
FR (1) FR2481033B1 (en)
GB (1) GB2075306B (en)
IE (1) IE51482B1 (en)
IT (1) IT1137365B (en)
MX (1) MX149212A (en)
PT (1) PT72871B (en)
SE (1) SE8102382L (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59228828A (en) * 1983-06-11 1984-12-22 萱沢　文男 Fluorescent amount measuring apparatus of eye body
US4638124A (en) * 1984-09-21 1987-01-20 Itt Corporation Key telephone system with distributed control

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53119606A (en) * 1977-03-28 1978-10-19 Toshiba Corp Double concentrating transmission system of tree-pair line
US4112261A (en) * 1977-05-16 1978-09-05 The Anaconda Company Key telephone system and method

Also Published As

Publication number Publication date
DK170081A (en) 1981-10-17
ES501298A0 (en) 1982-03-01
BE888435A (en) 1981-07-31
IT8121158A0 (en) 1981-04-14
PT72871A (en) 1981-05-01
IT1137365B (en) 1986-09-10
DE3114977A1 (en) 1982-03-18
PT72871B (en) 1982-03-29
IE51482B1 (en) 1987-01-07
MX149212A (en) 1983-09-23
GB2075306B (en) 1985-02-13
BR8102253A (en) 1981-11-24
SE8102382L (en) 1981-10-17
FR2481033A1 (en) 1981-10-23
GB2075306A (en) 1981-11-11
IE810839L (en) 1981-10-16
JPS579190A (en) 1982-01-18
FR2481033B1 (en) 1987-11-06

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