ES358566A1 - Sistema telefonico para servicios especiales. - Google Patents

Sistema telefonico para servicios especiales.

Info

Publication number
ES358566A1
ES358566A1 ES358566A ES358566A ES358566A1 ES 358566 A1 ES358566 A1 ES 358566A1 ES 358566 A ES358566 A ES 358566A ES 358566 A ES358566 A ES 358566A ES 358566 A1 ES358566 A1 ES 358566A1
Authority
ES
Spain
Prior art keywords
office
station
call
connection
trunk
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
ES358566A
Other languages
English (en)
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
Publication of ES358566A1 publication Critical patent/ES358566A1/es
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
    • H04Q3/54—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised
    • H04Q3/545—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised using a stored programme
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0004—Selecting arrangements using crossbar selectors in the switching stages

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Telephonic Communication Services (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Exchange Systems With Centralized Control (AREA)
ES358566A 1967-09-18 1968-09-16 Sistema telefonico para servicios especiales. Expired ES358566A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US66853067A 1967-09-18 1967-09-18

Publications (1)

Publication Number Publication Date
ES358566A1 true ES358566A1 (es) 1970-04-16

Family

ID=24682681

Family Applications (1)

Application Number Title Priority Date Filing Date
ES358566A Expired ES358566A1 (es) 1967-09-18 1968-09-16 Sistema telefonico para servicios especiales.

Country Status (9)

Country Link
US (1) US3546393A (es)
JP (1) JPS4421444B1 (es)
BE (1) BE720904A (es)
DE (1) DE1762884C3 (es)
ES (1) ES358566A1 (es)
FR (1) FR1583133A (es)
GB (1) GB1239591A (es)
NL (1) NL149052B (es)
SE (1) SE355278B (es)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3700823A (en) * 1971-09-02 1972-10-24 Northern Electric Co Combined alarm transmission and service call system
US3736383A (en) * 1971-10-28 1973-05-29 American Telephone & Telegraph Multicustomer centralized call diverter
US3859474A (en) * 1972-09-29 1975-01-07 Stromberg Carlson Corp Private automatic branch exchange with central office features
US4232199A (en) * 1978-10-18 1980-11-04 Summa Four, Inc. Special services add-on for dial pulse activated telephone switching office
US4317007A (en) * 1979-03-23 1982-02-23 Small World Exchange, Inc. Telephone-conferencing method and apparatus with monitor-only access
WO1980002095A1 (en) * 1979-03-23 1980-10-02 Small World Exchange Inc Telephone-conferencing apparatus and method
US4633042A (en) * 1984-07-26 1986-12-30 Electrotel, Inc. Electronic micro-controller conversion module for step by step switching apparatus
US4706280A (en) * 1985-10-31 1987-11-10 Electrotel, Inc. Electronic step-by-step telephone switching system
US4755985A (en) * 1986-12-09 1988-07-05 Racal Data Communications Inc. Method and apparatus for facilitating moves and changes in a communication system

Also Published As

Publication number Publication date
DE1762884A1 (de) 1970-11-12
DE1762884C3 (de) 1975-10-09
NL149052B (nl) 1976-03-15
SE355278B (es) 1973-04-09
DE1762884B2 (de) 1971-12-02
FR1583133A (es) 1969-10-17
NL6813330A (es) 1969-03-20
BE720904A (es) 1969-03-03
GB1239591A (es) 1971-07-21
US3546393A (en) 1970-12-08
JPS4421444B1 (es) 1969-09-12

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