PT72871B - Installation d'intercommunication electronique - Google Patents

Installation d'intercommunication electronique

Info

Publication number
PT72871B
PT72871B PT72871A PT7287181A PT72871B PT 72871 B PT72871 B PT 72871B PT 72871 A PT72871 A PT 72871A PT 7287181 A PT7287181 A PT 7287181A PT 72871 B PT72871 B PT 72871B
Authority
PT
Portugal
Prior art keywords
intercommunication installation
electronic intercommunication
electronic
installation
intercommunication
Prior art date
Application number
PT72871A
Other languages
English (en)
Portuguese (pt)
Other versions
PT72871A (fr
Inventor
Jean-Pierre Chambon
Andre Bohn
Original Assignee
Telephonie Ind Commerciale
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 Telephonie Ind Commerciale filed Critical Telephonie Ind Commerciale
Publication of PT72871A publication Critical patent/PT72871A/fr
Publication of PT72871B publication Critical patent/PT72871B/fr

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Small-Scale Networks (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Accommodation For Nursing Or Treatment Tables (AREA)
PT72871A 1980-04-16 1981-04-15 Installation d'intercommunication electronique PT72871B (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8008671A FR2481033B1 (fr) 1980-04-16 1980-04-16 Installation d'intercommunication electronique

Publications (2)

Publication Number Publication Date
PT72871A PT72871A (fr) 1981-05-01
PT72871B true PT72871B (fr) 1982-03-29

Family

ID=9241034

Family Applications (1)

Application Number Title Priority Date Filing Date
PT72871A PT72871B (fr) 1980-04-16 1981-04-15 Installation d'intercommunication electronique

Country Status (13)

Country Link
JP (1) JPS579190A (fr)
BE (1) BE888435A (fr)
BR (1) BR8102253A (fr)
DE (1) DE3114977A1 (fr)
DK (1) DK170081A (fr)
ES (1) ES501298A0 (fr)
FR (1) FR2481033B1 (fr)
GB (1) GB2075306B (fr)
IE (1) IE51482B1 (fr)
IT (1) IT1137365B (fr)
MX (1) MX149212A (fr)
PT (1) PT72871B (fr)
SE (1) SE8102382L (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59228828A (ja) * 1983-06-11 1984-12-22 萱沢　文男 眼体の螢光量測定装置
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 (da) 1981-10-17
GB2075306B (en) 1985-02-13
BE888435A (fr) 1981-07-31
ES8203183A1 (es) 1982-03-01
FR2481033B1 (fr) 1987-11-06
SE8102382L (sv) 1981-10-17
GB2075306A (en) 1981-11-11
FR2481033A1 (fr) 1981-10-23
IT1137365B (it) 1986-09-10
JPS579190A (en) 1982-01-18
IE810839L (en) 1981-10-16
PT72871A (fr) 1981-05-01
IE51482B1 (en) 1987-01-07
IT8121158A0 (it) 1981-04-14
BR8102253A (pt) 1981-11-24
ES501298A0 (es) 1982-03-01
MX149212A (es) 1983-09-23
DE3114977A1 (de) 1982-03-18

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