FR2119501A5 - - Google Patents

Info

Publication number
FR2119501A5
FR2119501A5 FR7145793A FR7145793A FR2119501A5 FR 2119501 A5 FR2119501 A5 FR 2119501A5 FR 7145793 A FR7145793 A FR 7145793A FR 7145793 A FR7145793 A FR 7145793A FR 2119501 A5 FR2119501 A5 FR 2119501A5
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
FR7145793A
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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 Western Electric Co Inc filed Critical Western Electric Co Inc
Application granted granted Critical
Publication of FR2119501A5 publication Critical patent/FR2119501A5/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Telephonic Communication Services (AREA)
FR7145793A 1970-12-21 1971-12-20 Expired FR2119501A5 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10020270A 1970-12-21 1970-12-21

Publications (1)

Publication Number Publication Date
FR2119501A5 true FR2119501A5 (fr) 1972-08-04

Family

ID=22278594

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7145793A Expired FR2119501A5 (fr) 1970-12-21 1971-12-20

Country Status (9)

Country Link
US (1) US3701854A (fr)
JP (1) JPS553880B1 (fr)
BE (1) BE776862A (fr)
CA (1) CA935583A (fr)
DE (1) DE2163440C3 (fr)
FR (1) FR2119501A5 (fr)
GB (1) GB1369460A (fr)
IT (1) IT943310B (fr)
NL (1) NL7117196A (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH580372A5 (fr) * 1973-08-29 1976-09-30 Telefonbau & Normalzeit Gmbh
JPS566662B2 (fr) * 1973-11-27 1981-02-13
US3941944A (en) * 1974-03-04 1976-03-02 Mcintosh Alexander C Signalling device for key telephone systems
DE2422806C3 (de) * 1974-05-10 1985-08-29 Neumann Elektronik GmbH, 4330 Mülheim Einrichtung zur Konzentration der Linienwahlmittel in einer tastengesteuerten Sprechanlage
JPS5140011A (en) * 1974-10-01 1976-04-03 Oki Electric Ind Co Ltd Pb sendahoshiki
US3971899A (en) * 1975-04-18 1976-07-27 Mcintosh Alexander C Signalling device for key telephone systems
SE7609646L (sv) * 1976-09-01 1978-03-02 Ellemtel Utvecklings Ab Flerapparatsystem
GB1595301A (en) * 1976-12-10 1981-08-12 Plessey Canada Electronic telephone system
US4088844A (en) * 1976-12-21 1978-05-09 Bell Telephone Laboratories, Incorporated Telephone station set interface circuit
JPS53100702A (en) * 1977-02-15 1978-09-02 Nippon Telegr & Teleph Corp <Ntt> Key telephone equipment
US4112261A (en) * 1977-05-16 1978-09-05 The Anaconda Company Key telephone system and method
US4173714A (en) * 1977-06-03 1979-11-06 Tie/Communications, Inc. Communication circuit with combined power feed and data transmission over a phantom channel
US4178480A (en) * 1978-07-20 1979-12-11 Bell Telephone Laboratories, Incorporated Signal multiplexing circuit
US4171467A (en) * 1978-07-20 1979-10-16 Bell Telephone Laboratories, Incorporated Signal multiplexing circuit
USRE31510E (en) 1978-07-20 1984-01-24 Bell Telephone Laboratories, Incorporated Signal multiplexing circuit

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1596576A (fr) * 1968-09-13 1970-07-31
US3604857A (en) * 1969-07-25 1971-09-14 Bell Telephone Labor Inc Line-oriented key telephone system

Also Published As

Publication number Publication date
CA935583A (en) 1973-10-16
JPS4713253A (fr) 1972-07-06
US3701854A (en) 1972-10-31
BE776862A (fr) 1972-04-17
NL7117196A (fr) 1972-06-23
IT943310B (it) 1973-04-02
JPS553880B1 (fr) 1980-01-28
DE2163440B2 (de) 1980-01-03
DE2163440C3 (de) 1980-09-04
DE2163440A1 (de) 1972-07-20
GB1369460A (en) 1974-10-09

Similar Documents

Publication Publication Date Title
AR204384A1 (fr)
ATA96471A (fr)
AU1473870A (fr)
AU2044470A (fr)
AU2130570A (fr)
AU1716970A (fr)
AU1833270A (fr)
AU2017870A (fr)
AU2085370A (fr)
AR195465A1 (fr)
AU1943370A (fr)
AU2112570A (fr)
AU1581370A (fr)
AU1591370A (fr)
AU1603270A (fr)
AU1689770A (fr)
AU1064870A (fr)
AU1789870A (fr)
AU1832970A (fr)
AU1841070A (fr)
AU1004470A (fr)
AU1872870A (fr)
AU1879170A (fr)
AU2144270A (fr)
AU2131570A (fr)

Legal Events

Date Code Title Description
ST Notification of lapse