ES380787A1 - Mejoras en sistemas de llamadas selectivas codificadas. - Google Patents

Mejoras en sistemas de llamadas selectivas codificadas.

Info

Publication number
ES380787A1
ES380787A1 ES380787A ES380787A ES380787A1 ES 380787 A1 ES380787 A1 ES 380787A1 ES 380787 A ES380787 A ES 380787A ES 380787 A ES380787 A ES 380787A ES 380787 A1 ES380787 A1 ES 380787A1
Authority
ES
Spain
Prior art keywords
signal
party line
tones
code
subscriber station
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
ES380787A
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.)
Nokia Spain SA
Original Assignee
Alcatel Espana SA
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 Alcatel Espana SA filed Critical Alcatel Espana SA
Publication of ES380787A1 publication Critical patent/ES380787A1/es
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q5/00—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange
    • H04Q5/02—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange with direct connection for all subscribers, i.e. party-line systems
    • H04Q5/08—Signalling by continuous ac

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Telephonic Communication Services (AREA)
ES380787A 1969-06-16 1970-06-15 Mejoras en sistemas de llamadas selectivas codificadas. Expired ES380787A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA54496 1969-06-16

Publications (1)

Publication Number Publication Date
ES380787A1 true ES380787A1 (es) 1972-09-16

Family

ID=4085350

Family Applications (1)

Application Number Title Priority Date Filing Date
ES380787A Expired ES380787A1 (es) 1969-06-16 1970-06-15 Mejoras en sistemas de llamadas selectivas codificadas.

Country Status (4)

Country Link
US (1) US3689705A (es)
CA (1) CA888419A (es)
ES (1) ES380787A1 (es)
FR (1) FR2046802B1 (es)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4048448A (en) * 1976-02-19 1977-09-13 Bell Telephone Laboratories, Incorporated Multiparty telephone ringing
US4221935A (en) * 1977-10-24 1980-09-09 International Standard Electric Corporation Control circuit for telephone subscriber station
CA1142279A (en) * 1979-10-18 1983-03-01 Mitel Corporation Ringing decoder circuit
US4262172A (en) * 1980-01-17 1981-04-14 Bell Telephone Laboratories, Incorporated Ring-trip detector
US4587380A (en) * 1984-06-14 1986-05-06 Harris Corporation Interface for connecting standard telephones to party lines
US4567330A (en) * 1984-06-14 1986-01-28 Harris Corporation Interface for connecting standard telephones to party lines
US4645877A (en) * 1984-06-14 1987-02-24 Harris Corporation Interface for connecting standard telephones to party lines
US5673313A (en) * 1993-12-07 1997-09-30 Brother Kogyo Kabushiki Kaisha Telephone set of distinctive ringing type wherein pattern of telephone number call signal is registered for determination of telephone number being called
JP3229469B2 (ja) * 1993-12-07 2001-11-19 ブラザー工業株式会社 ファクシミリ装置
JPH07162550A (ja) * 1993-12-07 1995-06-23 Brother Ind Ltd 電話装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2763726A (en) * 1954-09-10 1956-09-18 Bell Telephone Labor Inc Telephone ringing-signal transmission system
US2824173A (en) * 1954-11-18 1958-02-18 Bell Telephone Labor Inc Transistor selective ringing, dialing, and party identification circuit
US3026377A (en) * 1957-10-10 1962-03-20 Bell Telephone Labor Inc Compatible ringing circuit
US3036163A (en) * 1959-05-15 1962-05-22 Bell Telephone Labor Inc Signaling system
DE1762060A1 (de) * 1967-03-31 1970-04-30 Nippon Electric Co Zwischenamtswaehlsystem fuer ein Fernsprech-Waehlvermittlungsnetz
US3597551A (en) * 1969-05-29 1971-08-03 Lynch Communication Systems In-band signalling apparatus

Also Published As

Publication number Publication date
CA888419A (en) 1971-12-14
US3689705A (en) 1972-09-05
FR2046802A1 (es) 1971-03-12
FR2046802B1 (es) 1973-01-12

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