FR2224958B1 - - Google Patents

Info

Publication number
FR2224958B1
FR2224958B1 FR7411665A FR7411665A FR2224958B1 FR 2224958 B1 FR2224958 B1 FR 2224958B1 FR 7411665 A FR7411665 A FR 7411665A FR 7411665 A FR7411665 A FR 7411665A FR 2224958 B1 FR2224958 B1 FR 2224958B1
Authority
FR
France
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
FR7411665A
Other languages
French (fr)
Other versions
FR2224958A1 (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.)
Plessey Handel und Investments AG
Original Assignee
Plessey Handel und Investments AG
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 Plessey Handel und Investments AG filed Critical Plessey Handel und Investments AG
Publication of FR2224958A1 publication Critical patent/FR2224958A1/fr
Application granted granted Critical
Publication of FR2224958B1 publication Critical patent/FR2224958B1/fr
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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/58—Arrangements providing connection between main exchange and sub-exchange or satellite
    • H04Q3/62—Arrangements providing connection between main exchange and sub-exchange or satellite for connecting to private branch exchanges
    • H04Q3/625—Arrangements in the private branch exchange

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
FR7411665A 1973-04-04 1974-04-02 Expired FR2224958B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1601673A GB1437031A (en) 1973-04-04 1973-04-04 House exchange telephone system

Publications (2)

Publication Number Publication Date
FR2224958A1 FR2224958A1 (en) 1974-10-31
FR2224958B1 true FR2224958B1 (en) 1981-04-30

Family

ID=10069655

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7411665A Expired FR2224958B1 (en) 1973-04-04 1974-04-02

Country Status (8)

Country Link
DE (1) DE2416122A1 (en)
FR (1) FR2224958B1 (en)
GB (1) GB1437031A (en)
HK (1) HK49177A (en)
IT (1) IT1010893B (en)
KE (1) KE2768A (en)
MY (1) MY7800011A (en)
ZA (1) ZA741829B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1595301A (en) * 1976-12-10 1981-08-12 Plessey Canada Electronic telephone system
DE3112847C2 (en) * 1981-03-31 1983-02-03 Siemens AG, 1000 Berlin und 8000 München Method for the reciprocal transmission of binary data signals via a signal line terminated at both ends with a transmitter
FR2518858A1 (en) * 1981-12-23 1983-06-24 Jeumont Schneider DEVICE FOR TRANSMITTING SIGNALS ON A LINE ALSO PROVIDING A CONTINUOUS VOLTAGE SUPPLY
SE435123B (en) * 1983-01-19 1984-09-03 Ellemtel Utvecklings Ab TELECOMMUNICATIONS TERMINAL
US4575584A (en) * 1984-07-05 1986-03-11 Honeywell Inc. Fail-safe digital phone
US4739205A (en) * 1986-02-24 1988-04-19 Rockwell International Corporation Telephone signal multiplexing system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3519757A (en) * 1968-02-27 1970-07-07 Bell Telephone Labor Inc Electronic key telephone system
US3549820A (en) * 1968-05-02 1970-12-22 Bell Telephone Labor Inc Key telephone station concentrator
US3604857A (en) * 1969-07-25 1971-09-14 Bell Telephone Labor Inc Line-oriented key telephone system

Also Published As

Publication number Publication date
HK49177A (en) 1977-09-30
IT1010893B (en) 1977-01-20
DE2416122A1 (en) 1974-10-24
KE2768A (en) 1977-10-21
AU6734274A (en) 1975-10-02
ZA741829B (en) 1975-03-26
DE2416122C2 (en) 1987-08-13
GB1437031A (en) 1976-05-26
MY7800011A (en) 1978-12-31
FR2224958A1 (en) 1974-10-31

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse