AU543544B2 - Signalling in pbx system - Google Patents

Signalling in pbx system

Info

Publication number
AU543544B2
AU543544B2 AU75644/81A AU7564481A AU543544B2 AU 543544 B2 AU543544 B2 AU 543544B2 AU 75644/81 A AU75644/81 A AU 75644/81A AU 7564481 A AU7564481 A AU 7564481A AU 543544 B2 AU543544 B2 AU 543544B2
Authority
AU
Australia
Prior art keywords
signalling
pbx system
pbx
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.)
Ceased
Application number
AU75644/81A
Other versions
AU7564481A (en
Inventor
Dieter Blossfeldt
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Publication of AU7564481A publication Critical patent/AU7564481A/en
Application granted granted Critical
Publication of AU543544B2 publication Critical patent/AU543544B2/en
Anticipated expiration legal-status Critical
Ceased 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
    • H04M9/003—Transmission of control signals from or to the key telephone set; signalling equipment at key telephone set, e.g. keyboard or display equipment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
    • H04L25/40—Transmitting circuits; Receiving circuits
    • H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
    • H04L25/4906—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems using binary codes

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Telephonic Communication Services (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Meter Arrangements (AREA)
AU75644/81A 1980-09-25 1981-09-24 Signalling in pbx system Ceased AU543544B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3036182A DE3036182C2 (en) 1980-09-25 1980-09-25 Method for the mutual transmission of binary digital signals between a central facility and telephone subscriber stations connected to it
DE30361821 1980-09-25

Publications (2)

Publication Number Publication Date
AU7564481A AU7564481A (en) 1982-04-01
AU543544B2 true AU543544B2 (en) 1985-04-26

Family

ID=6112832

Family Applications (1)

Application Number Title Priority Date Filing Date
AU75644/81A Ceased AU543544B2 (en) 1980-09-25 1981-09-24 Signalling in pbx system

Country Status (12)

Country Link
EP (1) EP0048925B1 (en)
AR (1) AR230911A1 (en)
AT (1) ATE6719T1 (en)
AU (1) AU543544B2 (en)
BR (1) BR8106120A (en)
CA (1) CA1185024A (en)
DE (1) DE3036182C2 (en)
FI (1) FI74567C (en)
GB (1) GB2085695B (en)
IN (1) IN155068B (en)
NO (1) NO153589C (en)
TR (1) TR21185A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3248276A1 (en) * 1982-12-28 1984-06-28 Standard Elektrik Lorenz Ag, 7000 Stuttgart INTERFACE CIRCUIT FOR A TELECOMMUNICATION SYSTEM
DE4107593C1 (en) * 1991-03-09 1992-05-21 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung Ev, 8000 Muenchen, De

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3215779A (en) * 1961-02-24 1965-11-02 Hallicrafters Co Digital data conversion and transmission system
CA1018270A (en) * 1972-05-23 1977-09-27 Federico R. Laliccia Key telephone system using time division and space division control
US4046972A (en) * 1976-10-27 1977-09-06 Bell Telephone Laboratories, Incorporated Key telephone station set circuit

Also Published As

Publication number Publication date
CA1185024A (en) 1985-04-02
EP0048925B1 (en) 1984-03-14
NO153589C (en) 1986-04-16
GB2085695B (en) 1984-09-12
TR21185A (en) 1983-12-06
FI74567C (en) 1988-02-08
FI74567B (en) 1987-10-30
DE3036182C2 (en) 1983-12-01
IN155068B (en) 1984-12-29
NO813203L (en) 1982-03-26
DE3036182A1 (en) 1982-04-01
AU7564481A (en) 1982-04-01
AR230911A1 (en) 1984-07-31
BR8106120A (en) 1982-06-15
FI812977L (en) 1982-03-26
GB2085695A (en) 1982-04-28
NO153589B (en) 1986-01-06
ATE6719T1 (en) 1984-03-15
EP0048925A1 (en) 1982-04-07

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