ES2046112A2 - Equipo telefonico para lineas directas punto a punto. - Google Patents

Equipo telefonico para lineas directas punto a punto.

Info

Publication number
ES2046112A2
ES2046112A2 ES9200868A ES9200868A ES2046112A2 ES 2046112 A2 ES2046112 A2 ES 2046112A2 ES 9200868 A ES9200868 A ES 9200868A ES 9200868 A ES9200868 A ES 9200868A ES 2046112 A2 ES2046112 A2 ES 2046112A2
Authority
ES
Spain
Prior art keywords
point
frequency
telephone equipment
picked
hook
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.)
Granted
Application number
ES9200868A
Other languages
English (en)
Other versions
ES2046112B1 (es
ES2046112R (es
Inventor
Garcia Revenga
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.)
Revenga Ingenieros SA
Original Assignee
Revenga Ingenieros 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 Revenga Ingenieros SA filed Critical Revenga Ingenieros SA
Priority to ES9200868A priority Critical patent/ES2046112B1/es
Publication of ES2046112A2 publication Critical patent/ES2046112A2/es
Publication of ES2046112R publication Critical patent/ES2046112R/es
Application granted granted Critical
Publication of ES2046112B1 publication Critical patent/ES2046112B1/es
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Interface Circuits In Exchanges (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Alarm Systems (AREA)

Abstract

EQUIPO TELEFONICO PARA LINEAS DIRECTAS PUNTO A PUNTO. ESTE EQUIPO TELEFONICO PARA LINEAS DIRECTAS PUNTO A PUNTO, COMPRENDE LA INTERCONEXION DE DOS APARATOS GEMELOS, CONFIGURADOS COMO TERMINAL O COMO EMISOR Y MEDIANTE SUS CIRCUITOS FUNCIONALES, CUANDO ESTAN EN REPOSO SE INTERCAMBIAN SEÑALES PERMANENTES COMO TONO PORTADOR DIFERENCIADOS POR SU FRECUENCIA. COMPRENDIDAS ESTAS ENTRE 300 Y 3.400 HZ. AL DESCOLGAR CUALQUIERA DE ESTOS, SU FRECUENCIA DE SEÑALIZACION PASA A UNA SEGUNDA CONSIDERADA COMO LLAMADA DIFERENTE. UN EQUIPO DETECTA EL CAMBIO DE FRECUENCIA, EMITIENDO UN AVISO ACUSTICO Y AL DESCOLGARSE, SE MODIFICA Y SUPRIME EL ENVIO DE PORTADORAS. AL COLGAR AMBOS APARATOS, SE RESTABLECE LA SITUACION INICIAL Y SI DESAPARECE EL TONO DE CANAL LIBRE, DISPARA CASI DE FORMA INSTANTANEA LA ALARMA DURANTE LA SITUACION DE REPOSO DEL SISTEMA. EL COLGADO DE UNO SOLO DE LOS DOS TELEFONOS, DISPARA SENDAS SEÑALIZACIONES EN CADA APARATO, AUNQUE DIFERENTES ENTRE SI.
ES9200868A 1992-04-24 1992-04-24 Equipo telefonico para lineas directas punto a punto. Expired - Fee Related ES2046112B1 (es)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ES9200868A ES2046112B1 (es) 1992-04-24 1992-04-24 Equipo telefonico para lineas directas punto a punto.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES9200868A ES2046112B1 (es) 1992-04-24 1992-04-24 Equipo telefonico para lineas directas punto a punto.

Publications (3)

Publication Number Publication Date
ES2046112A2 true ES2046112A2 (es) 1994-01-16
ES2046112R ES2046112R (es) 1996-05-01
ES2046112B1 ES2046112B1 (es) 1996-11-16

Family

ID=8276828

Family Applications (1)

Application Number Title Priority Date Filing Date
ES9200868A Expired - Fee Related ES2046112B1 (es) 1992-04-24 1992-04-24 Equipo telefonico para lineas directas punto a punto.

Country Status (1)

Country Link
ES (1) ES2046112B1 (es)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4431868A (en) * 1981-07-09 1984-02-14 International Telephone And Telegraph Corporation Solid state telephone line interface circuit with ringing capability
EP0264644A2 (de) * 1986-09-23 1988-04-27 Siemens Aktiengesellschaft Schaltungsanordnung zur Nachbildung des NSI-Kontaktes mittels der Halteschaltung in einem Zweiwegefernsprecher

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4431868A (en) * 1981-07-09 1984-02-14 International Telephone And Telegraph Corporation Solid state telephone line interface circuit with ringing capability
EP0264644A2 (de) * 1986-09-23 1988-04-27 Siemens Aktiengesellschaft Schaltungsanordnung zur Nachbildung des NSI-Kontaktes mittels der Halteschaltung in einem Zweiwegefernsprecher

Also Published As

Publication number Publication date
ES2046112B1 (es) 1996-11-16
ES2046112R (es) 1996-05-01

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