FI60475C - Telefoninstallation foer privat bruk - Google Patents

Telefoninstallation foer privat bruk Download PDF

Info

Publication number
FI60475C
FI60475C FI751008A FI751008A FI60475C FI 60475 C FI60475 C FI 60475C FI 751008 A FI751008 A FI 751008A FI 751008 A FI751008 A FI 751008A FI 60475 C FI60475 C FI 60475C
Authority
FI
Finland
Prior art keywords
line
circuit
signal
relay
internal
Prior art date
Application number
FI751008A
Other languages
English (en)
Finnish (fi)
Swedish (sv)
Other versions
FI751008A (de
FI60475B (fi
Inventor
Petrus Dingeman Avontuur
Adrianus Gerardus Corneli Bend
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 FI751008A publication Critical patent/FI751008A/fi
Application granted granted Critical
Publication of FI60475B publication Critical patent/FI60475B/sv
Publication of FI60475C publication Critical patent/FI60475C/sv

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/58—Arrangements for transferring received calls from one subscriber to another; Arrangements affording interim conversations between either the calling or the called party and a third party
    • 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)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Structure Of Telephone Exchanges (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Telephone Function (AREA)
FI751008A 1974-04-11 1975-04-04 Telefoninstallation foer privat bruk FI60475C (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL7404995A NL7404995A (nl) 1974-04-11 1974-04-11 Voor particulier gebruik dienende telefoon- installatie.
NL7404995 1974-04-11

Publications (3)

Publication Number Publication Date
FI751008A FI751008A (de) 1975-10-12
FI60475B FI60475B (fi) 1981-09-30
FI60475C true FI60475C (fi) 1982-01-11

Family

ID=19821159

Family Applications (1)

Application Number Title Priority Date Filing Date
FI751008A FI60475C (fi) 1974-04-11 1975-04-04 Telefoninstallation foer privat bruk

Country Status (8)

Country Link
DK (1) DK154475A (de)
FI (1) FI60475C (de)
FR (1) FR2267670B1 (de)
GB (1) GB1501704A (de)
IT (1) IT1037245B (de)
NL (1) NL7404995A (de)
NO (1) NO141875B (de)
SE (1) SE409537B (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1535650A (en) * 1976-11-18 1978-12-13 Int Standard Electric Corp Electronic switching device for producing a timed signal
GB2179523B (en) * 1985-08-23 1989-07-19 Ferranti Gte Limited Private telephone system
US4744103A (en) * 1985-11-27 1988-05-10 Rauland-Borg Corporation Computer controlled multi-link communication system

Also Published As

Publication number Publication date
FR2267670B1 (de) 1982-10-08
SE7503102L (sv) 1975-10-13
DK154475A (de) 1975-10-12
GB1501704A (en) 1978-02-22
FI751008A (de) 1975-10-12
NO751275L (de) 1975-10-14
FI60475B (fi) 1981-09-30
FR2267670A1 (de) 1975-11-07
IT1037245B (it) 1979-11-10
SE409537B (sv) 1979-08-20
NO141875B (no) 1980-02-11
NL7404995A (nl) 1975-10-14

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Legal Events

Date Code Title Description
MM Patent lapsed

Owner name: OY L M ERICSSON AB