ES423110A1 - Un sistema para la senalizacion de la condicion de linea. - Google Patents

Un sistema para la senalizacion de la condicion de linea.

Info

Publication number: ES423110A1
Authority: ES; Spain
Prior art keywords: circuit; signalling system; input; line condition; interrogating
Prior art date: 1973-02-12
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

ES423110A

Other languages

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.)

1973-02-12

Filing date

1974-02-11

Publication date

1976-04-16

1974-02-11 Application filed by Alcatel Espana SA filed Critical Alcatel Espana SA

1976-04-16 Publication of ES423110A1 publication Critical patent/ES423110A1/es

Status Expired legal-status Critical Current

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements

Landscapes

Engineering & Computer Science (AREA)
Computer Networks & Wireless Communication (AREA)
Monitoring And Testing Of Exchanges (AREA)
Interface Circuits In Exchanges (AREA)
Electronic Switches (AREA)

ES423110A 1973-02-12 1974-02-11 Un sistema para la senalizacion de la condicion de linea. Expired ES423110A1 (es)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
NL7301959A NL7301959A (es)	1973-02-12	1973-02-12

Publications (1)

Publication Number	Publication Date
ES423110A1 true ES423110A1 (es)	1976-04-16

Family

ID=19818194

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
ES423110A Expired ES423110A1 (es)	1973-02-12	1974-02-11	Un sistema para la senalizacion de la condicion de linea.

Country Status (12)

Country	Link
US (1)	US3935393A (es)
AR (1)	AR203742A1 (es)
BE (1)	BE810817A (es)
BR (1)	BR7400923D0 (es)
CH (1)	CH573694A5 (es)
DE (1)	DE2406128C3 (es)
ES (1)	ES423110A1 (es)
FR (1)	FR2217891B1 (es)
GB (1)	GB1423092A (es)
IT (1)	IT1007249B (es)
NL (1)	NL7301959A (es)
ZA (1)	ZA74205B (es)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0746128B1 (en) *	1995-05-30	2002-09-25	STMicroelectronics S.r.l.	Telephone interface circuit with impedance termination during call pauses

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB766563A (en) *	1954-02-20	1957-01-23	Automatic Telephone & Elect	Improvements in or relating to subscribers' line circuits for use in automatic telephone systems
NL112427C (es) *	1956-12-07
GB1095575A (es) *	1964-07-25
DE1218535B (de) *	1965-03-10	1966-06-08	Telefunken Patent	Schaltungsanordnung zur Feststellung des Belegungszustandes von Teilnehmerleitungen in Fernsprechanlagen
NL6712959A (es) *	1967-09-22	1969-03-25
DE1762356A1 (de) *	1968-06-01	1970-04-23	Telefunken Patent	Schaltungsanordnung zur UEberwachung der Betriebszustaende von Teilnehmeranschlussleitungen in Fernmelde-,insbesondere Fernsprechanlagen
FR2119188A5 (es) *	1970-12-23	1972-08-04	Constr Telephoniques
US3713103A (en) *	1971-06-29	1973-01-23	Gte Automatic Electric Lab Inc	Remote contact sensing scanpoint matrix
FR2158619A5 (es) *	1971-10-26	1973-06-15	Constr Telephoniques
US3855421A (en) *	1972-01-26	1974-12-17	Int Standard Electric Corp	Telephone subscriber line circuit
US3808377A (en) *	1972-09-15	1974-04-30	Gte Automatic Electric Lab Inc	Remote sensing circuit

1973
- 1973-01-11 ZA ZA740205A patent/ZA74205B/xx unknown
- 1973-02-12 NL NL7301959A patent/NL7301959A/xx not_active Application Discontinuation
1974
- 1974-01-31 US US05/438,236 patent/US3935393A/en not_active Expired - Lifetime
- 1974-02-06 IT IT20213/74A patent/IT1007249B/it active
- 1974-02-07 GB GB567974A patent/GB1423092A/en not_active Expired
- 1974-02-08 BR BR923/74A patent/BR7400923D0/pt unknown
- 1974-02-08 DE DE2406128A patent/DE2406128C3/de not_active Expired
- 1974-02-08 FR FR7404221A patent/FR2217891B1/fr not_active Expired
- 1974-02-11 ES ES423110A patent/ES423110A1/es not_active Expired
- 1974-02-11 AR AR252300A patent/AR203742A1/es active
- 1974-02-11 BE BE2053412A patent/BE810817A/xx not_active IP Right Cessation
- 1974-02-12 CH CH191774A patent/CH573694A5/xx not_active IP Right Cessation

Also Published As

Publication number	Publication date
DE2406128A1 (de)	1974-09-05
FR2217891B1 (es)	1977-09-09
IT1007249B (it)	1976-10-30
DE2406128C3 (de)	1981-01-15
BR7400923D0 (pt)	1974-09-10
BE810817A (nl)	1974-08-12
GB1423092A (en)	1976-01-28
AU6540274A (en)	1975-08-14
ZA74205B (en)	1974-11-27
DE2406128B2 (de)	1980-05-08
FR2217891A1 (es)	1974-09-06
US3935393A (en)	1976-01-27
CH573694A5 (es)	1976-03-15
AR203742A1 (es)	1975-10-15
NL7301959A (es)	1974-08-14

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