GB2085695B - Signalling in pbx systems - Google Patents

Signalling in pbx systems

Info

Publication number
GB2085695B
GB2085695B GB8128946A GB8128946A GB2085695B GB 2085695 B GB2085695 B GB 2085695B GB 8128946 A GB8128946 A GB 8128946A GB 8128946 A GB8128946 A GB 8128946A GB 2085695 B GB2085695 B GB 2085695B
Authority
GB
United Kingdom
Prior art keywords
signalling
pbx systems
pbx
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
GB8128946A
Other languages
English (en)
Other versions
GB2085695A (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.)
Siemens Corp
Original Assignee
Siemens Corp
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 Corp filed Critical Siemens Corp
Publication of GB2085695A publication Critical patent/GB2085695A/en
Application granted granted Critical
Publication of GB2085695B publication Critical patent/GB2085695B/en
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
    • H04M9/003—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)
GB8128946A 1980-09-25 1981-09-24 Signalling in pbx systems Expired GB2085695B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3036182A DE3036182C2 (de) 1980-09-25 1980-09-25 Verfahren zur wechselseitigen Übertragung von binären Digitalsignalen zwischen einer zentralen Einrichtung und mit ihr verbundenen Fernsprechteilnehmerstellen

Publications (2)

Publication Number Publication Date
GB2085695A GB2085695A (en) 1982-04-28
GB2085695B true GB2085695B (en) 1984-09-12

Family

ID=6112832

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8128946A Expired GB2085695B (en) 1980-09-25 1981-09-24 Signalling in pbx systems

Country Status (12)

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

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3248276A1 (de) * 1982-12-28 1984-06-28 Standard Elektrik Lorenz Ag, 7000 Stuttgart Schnittstellenschaltung fuer ein fernmeldesystem
DE4107593C1 (enExample) * 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
NO153589B (no) 1986-01-06
CA1185024A (en) 1985-04-02
AU7564481A (en) 1982-04-01
DE3036182A1 (de) 1982-04-01
DE3036182C2 (de) 1983-12-01
FI74567C (fi) 1988-02-08
IN155068B (enExample) 1984-12-29
BR8106120A (pt) 1982-06-15
AU543544B2 (en) 1985-04-26
GB2085695A (en) 1982-04-28
FI812977L (fi) 1982-03-26
TR21185A (tr) 1983-12-06
NO813203L (no) 1982-03-26
ATE6719T1 (de) 1984-03-15
EP0048925B1 (de) 1984-03-14
FI74567B (fi) 1987-10-30
NO153589C (no) 1986-04-16
AR230911A1 (es) 1984-07-31
EP0048925A1 (de) 1982-04-07

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee