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MX149212A - Mejoras en instalacion de intercomunicacion electronica - Google Patents

Mejoras en instalacion de intercomunicacion electronica

Info

Publication number
MX149212A
MX149212A MX186897A MX18689781A MX149212A MX 149212 A MX149212 A MX 149212A MX 186897 A MX186897 A MX 186897A MX 18689781 A MX18689781 A MX 18689781A MX 149212 A MX149212 A MX 149212A
Authority
MX
Mexico
Prior art keywords
installation
electronic intercommunication
intercommunication
electronic
Prior art date
Application number
MX186897A
Other languages
English (en)
Spanish (es)
Inventor
Jean-Pierre Chambon
Bohn Andre
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 MX149212A publication Critical patent/MX149212A/es

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)
  • Accommodation For Nursing Or Treatment Tables (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
MX186897A 1980-04-16 1981-04-15 Mejoras en instalacion de intercomunicacion electronica MX149212A (es)

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 (1)

Publication Number Publication Date
MX149212A true MX149212A (es) 1983-09-23

Family

ID=9241034

Family Applications (1)

Application Number Title Priority Date Filing Date
MX186897A MX149212A (es) 1980-04-16 1981-04-15 Mejoras en instalacion de intercomunicacion electronica

Country Status (13)

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

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
IE810839L (en) 1981-10-16
PT72871B (fr) 1982-03-29
BR8102253A (pt) 1981-11-24
IT1137365B (it) 1986-09-10
JPS579190A (en) 1982-01-18
ES501298A0 (es) 1982-03-01
DK170081A (da) 1981-10-17
FR2481033A1 (fr) 1981-10-23
FR2481033B1 (fr) 1987-11-06
GB2075306A (en) 1981-11-11
IT8121158A0 (it) 1981-04-14
BE888435A (fr) 1981-07-31
IE51482B1 (en) 1987-01-07
PT72871A (fr) 1981-05-01
ES8203183A1 (es) 1982-03-01
GB2075306B (en) 1985-02-13
SE8102382L (sv) 1981-10-17
DE3114977A1 (de) 1982-03-18

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