CA998150A - Telephone switching system - Google Patents

Telephone switching system

Info

Publication number
CA998150A
CA998150A CA158,830A CA158830A CA998150A CA 998150 A CA998150 A CA 998150A CA 158830 A CA158830 A CA 158830A CA 998150 A CA998150 A CA 998150A
Authority
CA
Canada
Prior art keywords
switching system
telephone switching
telephone
switching
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
CA158,830A
Other languages
English (en)
Other versions
CA158830S (en
Inventor
Henry A. Meise (Jr.)
George W. Taylor
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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 Inc filed Critical Western Electric Co Inc
Application granted granted Critical
Publication of CA998150A publication Critical patent/CA998150A/en
Expired legal-status Critical Current

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)
  • Telephonic Communication Services (AREA)
  • Interface Circuits In Exchanges (AREA)
CA158,830A 1972-05-03 1972-12-14 Telephone switching system Expired CA998150A (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
CA998150A true CA998150A (en) 1976-10-05

Family

ID=22945045

Family Applications (1)

Application Number Title Priority Date Filing Date
CA158,830A Expired CA998150A (en) 1972-05-03 1972-12-14 Telephone switching system

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
FR2183172B1 (xx) 1982-07-02
SE395997B (sv) 1977-08-29
GB1426919A (en) 1976-03-03
IT986281B (it) 1975-01-20
JPS4956513A (xx) 1974-06-01
DE2321947A1 (de) 1973-11-15
BE798984A (fr) 1973-08-31
US3746797A (en) 1973-07-17
JPS5333207B2 (xx) 1978-09-13
FR2183172A1 (xx) 1973-12-14
ES414271A1 (es) 1976-05-01

Similar Documents

Publication Publication Date Title
AU472719B2 (en) Automatic telecommunication switching system
CA1036277A (en) Telephone systems
CA998150A (en) Telephone switching system
CA967273A (en) Telephone switching system with line hunting
CA984983A (en) Telephone answering system
CA1003545A (en) Communication switching system interlock arrangement
AU5156373A (en) Telephone system
CA893835A (en) Switching device
CA1019052A (en) Processor controlled telecommunication switching system
CA893356A (en) Telecommunication switching systems
CA983184A (en) Key telephone system
AU489927B2 (en) Switching system
CA900632A (en) Telephone extension system
AU465998B2 (en) An improved switching system
AU482957B2 (en) An improved switching system
CA908295A (en) Time division switching system
CA844063A (en) Telephone switching system
CA887333A (en) Telephone switching system
CA870835A (en) Telephone switching system
CA893261A (en) Telecommunication systems
CA898356A (en) Step switching arrangement
CA903361A (en) Two level switching system
CA902175A (en) Cordless telephone system
AU480631B2 (en) Pcm switching systems
CA916266A (en) Switching devices