CA1036277A - Telephone systems - Google Patents

Telephone systems

Info

Publication number
CA1036277A
CA1036277A CA183,092A CA183092A CA1036277A CA 1036277 A CA1036277 A CA 1036277A CA 183092 A CA183092 A CA 183092A CA 1036277 A CA1036277 A CA 1036277A
Authority
CA
Canada
Prior art keywords
telephone systems
telephone
systems
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
CA183,092A
Other languages
English (en)
French (fr)
Other versions
CA183092S (en
Inventor
Ioan H. Williams
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.)
Thorn Ericsson Telecommunications Mfg Ltd
Original Assignee
Thorn Ericsson Telecommunications Mfg Ltd
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 Thorn Ericsson Telecommunications Mfg Ltd filed Critical Thorn Ericsson Telecommunications Mfg Ltd
Application granted granted Critical
Publication of CA1036277A publication Critical patent/CA1036277A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/12—Arrangements providing for calling or supervisory signals
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Exchange Systems With Centralized Control (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
CA183,092A 1972-10-12 1973-10-11 Telephone systems Expired CA1036277A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB4716072A GB1410508A (en) 1972-10-12 1972-10-12 Telephone systems
US73339176A 1976-10-18 1976-10-18

Publications (1)

Publication Number Publication Date
CA1036277A true CA1036277A (en) 1978-08-08

Family

ID=26265988

Family Applications (1)

Application Number Title Priority Date Filing Date
CA183,092A Expired CA1036277A (en) 1972-10-12 1973-10-11 Telephone systems

Country Status (9)

Country Link
US (1) US4136263A (de)
JP (1) JPS54723B2 (de)
BE (1) BE806010A (de)
CA (1) CA1036277A (de)
DE (1) DE2351133B2 (de)
FR (1) FR2203239A1 (de)
GB (1) GB1410508A (de)
LU (1) LU68590A1 (de)
NL (1) NL7314118A (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3991282A (en) * 1974-12-27 1976-11-09 Feil Thomas E Multi station telephone switching system
FR2320020A1 (fr) * 1975-08-01 1977-02-25 Gte Atea Nv Appareillage telephonique presentant les caracteristiques tant d'un systeme intercom que d'une installation
US4188511A (en) * 1978-01-27 1980-02-12 Tone Commander Systems, Inc. Multi-link telephone intercom system
US4215248A (en) * 1978-09-26 1980-07-29 International Telephone And Telegraph Corporation Telephone intercom circuit
US4257119A (en) * 1978-12-29 1981-03-17 Wescom Switching, Inc. PCM switching system for wide and narrow band signals
US4286118A (en) * 1979-07-02 1981-08-25 Solid State Systems, Inc. Data distribution system for private automatic branch exchange
US4292475A (en) * 1979-08-28 1981-09-29 Tone Commanders Systems, Inc. Expandable link telephone intercom system
DE3011507C2 (de) * 1980-03-25 1983-12-01 Siemens AG, 1000 Berlin und 8000 München Schaltungsanordnung für durch das öffentliche Stromversorgungsnetz gespeiste Fernsprechnebenstellenanlagen
US4600814A (en) * 1983-10-05 1986-07-15 Manufacturing Administrations Management Systems, Inc. Automated system for establishing telephone voice connections
WO1986007228A1 (en) * 1985-05-24 1986-12-04 Xitel Pty Limited Virtual bus switching system
JPS62286397A (ja) * 1986-06-05 1987-12-12 Iwatsu Electric Co Ltd ボタン電話装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1563652A (en) * 1925-12-01 of rochester
US3519757A (en) * 1968-02-27 1970-07-07 Bell Telephone Labor Inc Electronic key telephone system
SE318914B (de) * 1969-03-18 1969-12-22 Ericsson Telefon Ab L M
CH519283A (it) * 1969-09-12 1972-02-15 Cselt Centro Studi Lab Telecom Concentratore di traffico telefonico semielettronico con struttura ad albero
US3651272A (en) * 1970-06-05 1972-03-21 Bell Telephone Labor Inc Program controlled key telephone system for automatically connecting unanswered calls to stations
US3781478A (en) * 1972-07-07 1973-12-25 Bell Telephone Labor Inc Multiplex communication system
US3843845A (en) * 1972-09-11 1974-10-22 Northern Electric Co Electronic key telephone system

Also Published As

Publication number Publication date
DE2351133B2 (de) 1977-09-01
DE2351133A1 (de) 1974-04-25
BE806010A (fr) 1974-02-01
US4136263A (en) 1979-01-23
NL7314118A (de) 1974-04-16
AU6131373A (en) 1975-04-17
JPS4994215A (de) 1974-09-06
LU68590A1 (de) 1973-12-14
FR2203239A1 (de) 1974-05-10
GB1410508A (en) 1975-10-15
JPS54723B2 (de) 1979-01-16

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