BE858332A - Systeme telephoniques a lignes partagees - Google Patents

Systeme telephoniques a lignes partagees

Info

Publication number
BE858332A
BE858332A BE180619A BE180619A BE858332A BE 858332 A BE858332 A BE 858332A BE 180619 A BE180619 A BE 180619A BE 180619 A BE180619 A BE 180619A BE 858332 A BE858332 A BE 858332A
Authority
BE
Belgium
Prior art keywords
telephone system
shared lines
shared
lines
telephone
Prior art date
Application number
BE180619A
Other languages
English (en)
French (fr)
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Publication of BE858332A publication Critical patent/BE858332A/xx

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
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/39—Signalling arrangements; Manipulation of signalling currents using coded pulse groups

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Telephonic Communication Services (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)
BE180619A 1976-09-01 1977-09-01 Systeme telephoniques a lignes partagees BE858332A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7609646A SE7609646L (sv) 1976-09-01 1976-09-01 Flerapparatsystem

Publications (1)

Publication Number Publication Date
BE858332A true BE858332A (fr) 1978-01-02

Family

ID=20328774

Family Applications (1)

Application Number Title Priority Date Filing Date
BE180619A BE858332A (fr) 1976-09-01 1977-09-01 Systeme telephoniques a lignes partagees

Country Status (13)

Country Link
US (1) US4174466A (xx)
BE (1) BE858332A (xx)
CA (1) CA1085075A (xx)
CH (1) CH621902A5 (xx)
DE (1) DE2738219A1 (xx)
DK (1) DK386777A (xx)
ES (1) ES462009A1 (xx)
FI (1) FI772601A (xx)
GB (1) GB1546559A (xx)
IT (1) IT1088005B (xx)
NL (1) NL7709590A (xx)
NO (1) NO147290C (xx)
SE (1) SE7609646L (xx)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4286118A (en) * 1979-07-02 1981-08-25 Solid State Systems, Inc. Data distribution system for private automatic branch exchange
DE3036204C2 (de) * 1980-09-25 1984-03-08 Siemens AG, 1000 Berlin und 8000 München Empfangsschaltung in kleinen Fernsprech-Nebenstellenanlagen für über das Signalisierungsadernpaar einer vieradrigen Teilnehmeranschlußleitung übertragene binäre Digitalsignale, deren Binärwerte unterschiedlichen Spannungswerten entsprechen
DE3036183C2 (de) * 1980-09-25 1983-12-01 Siemens AG, 1000 Berlin und 8000 München Schaltungsanordnung zur Aussendung von digitalen Datensignalen von einer zentralen Einrichtung zu Teilnehmerstellen kleiner Nebenstellenanlagen
FI86123C (fi) * 1990-11-15 1992-07-10 Telenokia Oy Radiosaendarmottagarsystem.
IES65389B2 (en) * 1995-03-24 1995-10-18 Lake Electronic Tech A communicating circuit

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3701854A (en) * 1970-12-21 1972-10-31 Bell Telephone Labor Inc Key telephone system call signaling and station set data transfer arrangement
CA1018270A (en) * 1972-05-23 1977-09-27 Federico R. Laliccia Key telephone system using time division and space division control
US3843845A (en) * 1972-09-11 1974-10-22 Northern Electric Co Electronic key telephone system
CA1019426A (en) * 1973-10-19 1977-10-18 Keith Graham Telecommunication system using tdm switching
US3997738A (en) * 1974-10-21 1976-12-14 International Telephone And Telegraph Corporation Line circuit for telecommunications exchange using TDM

Also Published As

Publication number Publication date
DE2738219A1 (de) 1978-03-09
IT1088005B (it) 1985-06-04
GB1546559A (en) 1979-05-23
FI772601A (fi) 1978-03-02
CA1085075A (en) 1980-09-02
US4174466A (en) 1979-11-13
ES462009A1 (es) 1978-06-16
DK386777A (da) 1978-03-02
CH621902A5 (xx) 1981-02-27
NO147290B (no) 1982-11-29
SE7609646L (sv) 1978-03-02
NO773019L (no) 1978-03-02
NO147290C (no) 1983-03-09
NL7709590A (nl) 1978-03-03

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: TELEFON-A.B. L M ERICSSON

Effective date: 19870930