BE798984A - Systeme de communication telephonique - Google Patents

Systeme de communication telephonique

Info

Publication number
BE798984A
BE798984A BE130646A BE130646A BE798984A BE 798984 A BE798984 A BE 798984A BE 130646 A BE130646 A BE 130646A BE 130646 A BE130646 A BE 130646A BE 798984 A BE798984 A BE 798984A
Authority
BE
Belgium
Prior art keywords
communication system
telephone communication
telephone
communication
Prior art date
Application number
BE130646A
Other languages
English (en)
French (fr)
Inventor
H A Meise
G W Taylor
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
Publication of BE798984A publication Critical patent/BE798984A/xx

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)
BE130646A 1972-05-03 1973-05-02 Systeme de communication telephonique BE798984A (fr)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
BE798984A true BE798984A (fr) 1973-08-31

Family

ID=22945045

Family Applications (1)

Application Number Title Priority Date Filing Date
BE130646A BE798984A (fr) 1972-05-03 1973-05-02 Systeme de communication telephonique

Country Status (10)

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

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 (xx) * 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 (xx) 1978-09-13
US3746797A (en) 1973-07-17
CA998150A (en) 1976-10-05
FR2183172B1 (xx) 1982-07-02
JPS4956513A (xx) 1974-06-01
ES414271A1 (es) 1976-05-01
FR2183172A1 (xx) 1973-12-14
DE2321947A1 (de) 1973-11-15
IT986281B (it) 1975-01-20
GB1426919A (en) 1976-03-03
SE395997B (sv) 1977-08-29

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