SE8006662L - Abonnenttelefonsystem - Google Patents

Abonnenttelefonsystem

Info

Publication number
SE8006662L
SE8006662L SE8006662A SE8006662A SE8006662L SE 8006662 L SE8006662 L SE 8006662L SE 8006662 A SE8006662 A SE 8006662A SE 8006662 A SE8006662 A SE 8006662A SE 8006662 L SE8006662 L SE 8006662L
Authority
SE
Sweden
Prior art keywords
processing unit
common
central office
office line
telephone sets
Prior art date
Application number
SE8006662A
Other languages
Unknown language ( )
English (en)
Swedish (sv)
Inventor
P D Avontuur
Der Bend A G C Van
Original Assignee
Ericsson Telefon Mij
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 Mij filed Critical Ericsson Telefon Mij
Publication of SE8006662L publication Critical patent/SE8006662L/

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/26—Devices for calling a subscriber
    • H04M1/30—Devices which can set up and transmit only one digit at a time
    • H04M1/31—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses
    • H04M1/312—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses pulses produced by electronic circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/71—Substation extension arrangements
    • H04M1/715—Substation extension arrangements using two or more extensions per line
    • 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)
  • Telephonic Communication Services (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
SE8006662A 1979-09-25 1980-09-24 Abonnenttelefonsystem SE8006662L (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7907134A NL7907134A (nl) 1979-09-25 1979-09-25 Telefooninstallatie van de als sterpuntinstallatie aangeduide soort.

Publications (1)

Publication Number Publication Date
SE8006662L true SE8006662L (sv) 1981-03-26

Family

ID=19833910

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8006662A SE8006662L (sv) 1979-09-25 1980-09-24 Abonnenttelefonsystem

Country Status (10)

Country Link
AU (1) AU6265780A (da)
DK (1) DK403980A (da)
ES (1) ES8105913A1 (da)
FI (1) FI802986A7 (da)
FR (1) FR2466161A1 (da)
GB (1) GB2060316A (da)
IT (1) IT1149255B (da)
NL (1) NL7907134A (da)
NO (1) NO802825L (da)
SE (1) SE8006662L (da)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3000858C2 (de) * 1980-01-11 1986-11-13 Neumann Elektronik GmbH, 4330 Mülheim Tastengesteuerte Wechsel-, Gegen- oder Lautsprechanlage
US4744103A (en) * 1985-11-27 1988-05-10 Rauland-Borg Corporation Computer controlled multi-link communication system
IN167984B (da) * 1986-09-23 1991-01-19 Siemens Ag
US4769837A (en) * 1987-05-04 1988-09-06 Eoa Systems, Inc. Device for adding intercom functions to a phone system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2139693B1 (da) * 1971-05-28 1973-05-25 Supravox Sarl
GB1369829A (en) * 1971-12-23 1974-10-09 Standard Telephones Cables Ltd Electric impulse transmitters
FR2285775A1 (fr) * 1974-09-17 1976-04-16 Berna Guy Installation d'interphones a appels selectifs
US4088846A (en) * 1977-03-30 1978-05-09 Bell Telephone Laboratories, Incorporated Hold-plus-intercom for single-line stations

Also Published As

Publication number Publication date
NO802825L (no) 1981-03-26
DK403980A (da) 1981-03-26
NL7907134A (nl) 1981-03-27
AU6265780A (en) 1981-04-09
ES495348A0 (es) 1981-06-16
FR2466161A1 (fr) 1981-03-27
FI802986A7 (fi) 1981-03-25
IT8024872A0 (it) 1980-09-24
GB2060316A (en) 1981-04-29
ES8105913A1 (es) 1981-06-16
IT1149255B (it) 1986-12-03

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Legal Events

Date Code Title Description
NAV Patent application has lapsed

Ref document number: 8006662-4

Effective date: 19860926