IT986281B - Sistema di commutazione telefonica particolarmente per genralini privati - Google Patents

Sistema di commutazione telefonica particolarmente per genralini privati

Info

Publication number
IT986281B
IT986281B IT68224/73A IT6822473A IT986281B IT 986281 B IT986281 B IT 986281B IT 68224/73 A IT68224/73 A IT 68224/73A IT 6822473 A IT6822473 A IT 6822473A IT 986281 B IT986281 B IT 986281B
Authority
IT
Italy
Prior art keywords
genralini
private
switching system
telephone switching
system particularly
Prior art date
Application number
IT68224/73A
Other languages
English (en)
Italian (it)
Original Assignee
Western Electric Co
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 Western Electric Co filed Critical Western Electric Co
Application granted granted Critical
Publication of IT986281B publication Critical patent/IT986281B/it

Links

Classifications

    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Exchange Systems With Centralized Control (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Telephonic Communication Services (AREA)
IT68224/73A 1972-05-03 1973-05-02 Sistema di commutazione telefonica particolarmente per genralini privati IT986281B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US24979972A 1972-05-03 1972-05-03

Publications (1)

Publication Number Publication Date
IT986281B true IT986281B (it) 1975-01-20

Family

ID=22945045

Family Applications (1)

Application Number Title Priority Date Filing Date
IT68224/73A IT986281B (it) 1972-05-03 1973-05-02 Sistema di commutazione telefonica particolarmente per genralini privati

Country Status (10)

Country Link
US (1) US3746797A (Direct)
JP (1) JPS5333207B2 (Direct)
BE (1) BE798984A (Direct)
CA (1) CA998150A (Direct)
DE (1) DE2321947A1 (Direct)
ES (1) ES414271A1 (Direct)
FR (1) FR2183172B1 (Direct)
GB (1) GB1426919A (Direct)
IT (1) IT986281B (Direct)
SE (1) SE395997B (Direct)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4039758A (en) * 1973-05-22 1977-08-02 Hitachi, Ltd. Line identifying system of common control type automatic exchange
JPS5068004A (Direct) * 1973-10-16 1975-06-07
US3903374A (en) * 1974-01-09 1975-09-02 Stromberg Carlson Corp Control system for electronic PABX switching matrix
US3967073A (en) * 1975-01-09 1976-06-29 Bell Telephone Laboratories, Incorporated PBX automatic number identification system
US4286118A (en) * 1979-07-02 1981-08-25 Solid State Systems, Inc. Data distribution system for private automatic branch exchange
ZA838877B (en) * 1982-12-02 1984-09-26 Gen Electric Telecommunication exchanges
JPS6253061A (ja) * 1985-09-02 1987-03-07 Nec Corp 不正アクセス防止方法

Also Published As

Publication number Publication date
JPS5333207B2 (Direct) 1978-09-13
US3746797A (en) 1973-07-17
FR2183172A1 (Direct) 1973-12-14
CA998150A (en) 1976-10-05
JPS4956513A (Direct) 1974-06-01
BE798984A (fr) 1973-08-31
SE395997B (sv) 1977-08-29
ES414271A1 (es) 1976-05-01
FR2183172B1 (Direct) 1982-07-02
GB1426919A (en) 1976-03-03
DE2321947A1 (de) 1973-11-15

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