DK154475A - - Google Patents

Info

Publication number
DK154475A
DK154475A DK154475A DK154475A DK154475A DK 154475 A DK154475 A DK 154475A DK 154475 A DK154475 A DK 154475A DK 154475 A DK154475 A DK 154475A DK 154475 A DK154475 A DK 154475A
Authority
DK
Denmark
Application number
DK154475A
Other languages
Danish (da)
Inventor
P D Avontuur
A G C V D 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 DK154475A publication Critical patent/DK154475A/da

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)
  • Telephone Function (AREA)
  • Structure Of Telephone Exchanges (AREA)
  • Devices For Supply Of Signal Current (AREA)
DK154475A 1974-04-11 1975-04-10 DK154475A (fr)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
DK154475A true DK154475A (fr) 1975-10-12

Family

ID=19821159

Family Applications (1)

Application Number Title Priority Date Filing Date
DK154475A DK154475A (fr) 1974-04-11 1975-04-10

Country Status (8)

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

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
FI751008A (fr) 1975-10-12
SE409537B (sv) 1979-08-20
SE7503102L (sv) 1975-10-13
GB1501704A (en) 1978-02-22
FI60475B (fi) 1981-09-30
NL7404995A (nl) 1975-10-14
NO751275L (fr) 1975-10-14
FR2267670A1 (fr) 1975-11-07
FI60475C (fi) 1982-01-11
IT1037245B (it) 1979-11-10
FR2267670B1 (fr) 1982-10-08
NO141875B (no) 1980-02-11

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Legal Events

Date Code Title Description
PBP Patent lapsed