ES373468A1 - Circuito para un sistema de conmutacion telefonica. - Google Patents

Circuito para un sistema de conmutacion telefonica.

Info

Publication number
ES373468A1
ES373468A1 ES373468A ES373468A ES373468A1 ES 373468 A1 ES373468 A1 ES 373468A1 ES 373468 A ES373468 A ES 373468A ES 373468 A ES373468 A ES 373468A ES 373468 A1 ES373468 A1 ES 373468A1
Authority
ES
Spain
Prior art keywords
special service
line
switching circuit
circuit
incoming call
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
ES373468A
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 Inc
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 ES373468A1 publication Critical patent/ES373468A1/es
Expired legal-status Critical Current

Links

Classifications

    • 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)
  • Exchange Systems With Centralized Control (AREA)
  • Interface Circuits In Exchanges (AREA)
ES373468A 1968-11-05 1969-11-04 Circuito para un sistema de conmutacion telefonica. Expired ES373468A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US77338468A 1968-11-05 1968-11-05

Publications (1)

Publication Number Publication Date
ES373468A1 true ES373468A1 (es) 1972-01-16

Family

ID=25098090

Family Applications (1)

Application Number Title Priority Date Filing Date
ES373468A Expired ES373468A1 (es) 1968-11-05 1969-11-04 Circuito para un sistema de conmutacion telefonica.

Country Status (9)

Country Link
US (1) US3584156A (es)
JP (1) JPS4627602B1 (es)
BE (1) BE741240A (es)
DE (1) DE1955296B2 (es)
ES (1) ES373468A1 (es)
FR (1) FR2022616A1 (es)
GB (1) GB1283968A (es)
NL (1) NL6916603A (es)
SE (1) SE362328B (es)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3985971A (en) * 1974-07-22 1976-10-12 Colpoys John R Telephony
US5263084A (en) * 1991-07-22 1993-11-16 Northern Telecom Limited Spontaneous caller identification with call-waiting
BR9203109A (pt) * 1992-08-06 1994-03-01 Nelio Jose Nicolai Sinal de advertencia em chamada entrante para terminal ocupado
US7426264B1 (en) 1994-01-05 2008-09-16 Henderson Daniel A Method and apparatus for improved personal communication devices and systems
US7266186B1 (en) 1994-01-05 2007-09-04 Intellect Wireless Inc. Method and apparatus for improved paging receiver and system
US6980633B1 (en) * 1997-04-04 2005-12-27 Henderson Daniel A Enhanced call-waiting with caller identification method and apparatus using notch filters
US6339639B1 (en) 1997-04-04 2002-01-15 Daniel A. Henderson Enhanced call-waiting with caller identification method and apparatus
US6418209B1 (en) 1997-08-21 2002-07-09 Uniden Corporation Telecommunications device equipped with in-call incoming call notification function and method for detecting in-call incoming signal notification
US6611681B2 (en) * 1997-09-26 2003-08-26 Daniel A. Henderson Method and apparatus for an improved call interrupt feature in a cordless telephone answering device
CA2573914A1 (en) * 2007-01-12 2008-07-12 Daniel D. Karmazyn Controlling the operating states of a software application with a single keyboard button
US20150189072A1 (en) * 2013-12-27 2015-07-02 Saurin Shah Intelligent ancillary electronic device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3355555A (en) * 1964-07-29 1967-11-28 Bell Telephone Labor Inc Private branch telephone system with camp-on facilities
US3381095A (en) * 1965-01-19 1968-04-30 Bell Telephone Labor Inc Camp-on circuit
US3458662A (en) * 1966-07-29 1969-07-29 Bell Telephone Labor Inc Crossbar switching with special service provisions

Also Published As

Publication number Publication date
FR2022616A1 (es) 1970-07-31
GB1283968A (en) 1972-08-02
BE741240A (es) 1970-04-16
NL6916603A (es) 1970-05-08
DE1955296B2 (de) 1971-05-13
SE362328B (es) 1973-12-03
US3584156A (en) 1971-06-08
DE1955296A1 (de) 1970-08-27
JPS4627602B1 (es) 1971-08-11

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