IT1010893B - Centralino telefonico privato - Google Patents

Centralino telefonico privato

Info

Publication number
IT1010893B
IT1010893B IT42622/74A IT4262274A IT1010893B IT 1010893 B IT1010893 B IT 1010893B IT 42622/74 A IT42622/74 A IT 42622/74A IT 4262274 A IT4262274 A IT 4262274A IT 1010893 B IT1010893 B IT 1010893B
Authority
IT
Italy
Prior art keywords
private telephone
telephone switchboard
switchboard
private
telephone
Prior art date
Application number
IT42622/74A
Other languages
English (en)
Original Assignee
Plessey Handel Investment 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 Plessey Handel Investment Ag filed Critical Plessey Handel Investment Ag
Application granted granted Critical
Publication of IT1010893B publication Critical patent/IT1010893B/it

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
    • H04M9/005—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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/58—Arrangements providing connection between main exchange and sub-exchange or satellite
    • H04Q3/62—Arrangements providing connection between main exchange and sub-exchange or satellite for connecting to private branch exchanges
    • H04Q3/625—Arrangements in the private branch exchange
IT42622/74A 1973-04-04 1974-04-03 Centralino telefonico privato IT1010893B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1601673A GB1437031A (en) 1973-04-04 1973-04-04 House exchange telephone system

Publications (1)

Publication Number Publication Date
IT1010893B true IT1010893B (it) 1977-01-20

Family

ID=10069655

Family Applications (1)

Application Number Title Priority Date Filing Date
IT42622/74A IT1010893B (it) 1973-04-04 1974-04-03 Centralino telefonico privato

Country Status (8)

Country Link
DE (1) DE2416122A1 (it)
FR (1) FR2224958B1 (it)
GB (1) GB1437031A (it)
HK (1) HK49177A (it)
IT (1) IT1010893B (it)
KE (1) KE2768A (it)
MY (1) MY7800011A (it)
ZA (1) ZA741829B (it)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1595301A (en) * 1976-12-10 1981-08-12 Plessey Canada Electronic telephone system
DE3112847C2 (de) * 1981-03-31 1983-02-03 Siemens AG, 1000 Berlin und 8000 München Verfahren zur wechselseitigen Übertragung von binären Datensignalen über eine beidseitig mit einem Übertrager abgeschlossene Signalleitung
FR2518858A1 (fr) * 1981-12-23 1983-06-24 Jeumont Schneider Dispositif de transmission de signaux sur une ligne assurant egalement une alimentation en tension continue
SE435123B (sv) * 1983-01-19 1984-09-03 Ellemtel Utvecklings Ab Telekommunikationsterminal
US4575584A (en) * 1984-07-05 1986-03-11 Honeywell Inc. Fail-safe digital phone
US4739205A (en) * 1986-02-24 1988-04-19 Rockwell International Corporation Telephone signal multiplexing system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3519757A (en) * 1968-02-27 1970-07-07 Bell Telephone Labor Inc Electronic key telephone system
US3549820A (en) * 1968-05-02 1970-12-22 Bell Telephone Labor Inc Key telephone station concentrator
US3604857A (en) * 1969-07-25 1971-09-14 Bell Telephone Labor Inc Line-oriented key telephone system

Also Published As

Publication number Publication date
GB1437031A (en) 1976-05-26
FR2224958B1 (it) 1981-04-30
MY7800011A (en) 1978-12-31
HK49177A (en) 1977-09-30
FR2224958A1 (it) 1974-10-31
ZA741829B (en) 1975-03-26
DE2416122A1 (de) 1974-10-24
DE2416122C2 (it) 1987-08-13
AU6734274A (en) 1975-10-02
KE2768A (en) 1977-10-21

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