MX169117B - Aparato para conectar y desconectar una señal de llamada a un abonado llamado - Google Patents
Aparato para conectar y desconectar una señal de llamada a un abonado llamadoInfo
- Publication number
- MX169117B MX169117B MX013121A MX1312188A MX169117B MX 169117 B MX169117 B MX 169117B MX 013121 A MX013121 A MX 013121A MX 1312188 A MX1312188 A MX 1312188A MX 169117 B MX169117 B MX 169117B
- Authority
- MX
- Mexico
- Prior art keywords
- signal
- circuit
- disconnecting
- alternating current
- called subscriber
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/02—Calling substations, e.g. by ringing
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Devices For Supply Of Signal Current (AREA)
- Interface Circuits In Exchanges (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
La presente invención se refiere a un aparato en un sistema de telecomunicaciones para conectar y desconectar una señal de llamada a un abonado llamado de modo que para sonar un elemento de llamada se conecte de manera alterna a una fuente de voltaje de corriente alterna y, la señal iniciando entonces y siendo conectada de manera alterna a un circuito semiconductor, en donde se interrumpe la señal, caracterizado en que para impedir la ocurrencia de corriente transientes cuando se conecta el elemento de señal al circuito semiconductor el aparato incluye un circuito de interrupción de dos vías conectado en serie a la fuente de voltaje de corriente alterna que desconecta el voltaje de corriente alterna al elemento de señal, cuando la corriente a través del mismo está en un cruzamiento de zero y, un circuito de descarga conectado al elemento de señales para descargar al elemento antes de que el mismo se conecte al circuito semiconductor, de modo que el voltaje a través del elemento en la conexión quede dentro de un intervalo de voltaje determinado.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE8703890A SE459138B (sv) | 1987-10-08 | 1987-10-08 | Anordning i ett telekommunikationssystem vid inkoppling och urkoppling av en ringsignal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| MX169117B true MX169117B (es) | 1993-06-22 |
Family
ID=20369801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| MX013121A MX169117B (es) | 1987-10-08 | 1988-09-23 | Aparato para conectar y desconectar una señal de llamada a un abonado llamado |
Country Status (20)
| Country | Link |
|---|---|
| US (1) | US4908854A (es) |
| EP (1) | EP0311580B1 (es) |
| JP (1) | JPH02501525A (es) |
| KR (1) | KR950013625B1 (es) |
| CN (1) | CN1014292B (es) |
| AR (1) | AR243045A1 (es) |
| AU (1) | AU604383B2 (es) |
| BR (1) | BR8807236A (es) |
| DE (1) | DE3868478D1 (es) |
| DK (1) | DK168316B1 (es) |
| EG (1) | EG18642A (es) |
| ES (1) | ES2029730T3 (es) |
| FI (1) | FI98179C (es) |
| GR (1) | GR3003929T3 (es) |
| IE (1) | IE61777B1 (es) |
| MX (1) | MX169117B (es) |
| MY (1) | MY103396A (es) |
| SE (1) | SE459138B (es) |
| TR (1) | TR28806A (es) |
| WO (1) | WO1989003625A1 (es) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT392712B (de) * | 1989-05-23 | 1991-05-27 | Siemens Ag Oesterreich | Speiseschaltung zur einspeisung von rufwechselspannungen |
| SE519189C2 (sv) * | 1994-06-28 | 2003-01-28 | Ericsson Telefon Ab L M | Anordning för att skydda en abonnentlinjekrets från överspänningar |
| JPH0851652A (ja) * | 1994-06-29 | 1996-02-20 | Harris Corp | 電話システム用回路、インピーダンス設定回路、加入者線インタフェース回路、並びに接地キー検出器 |
| GB2298533A (en) * | 1994-07-29 | 1996-09-04 | Texas Instruments Ltd | Overvoltage protector |
| US5699420A (en) * | 1994-12-23 | 1997-12-16 | Lucent Technologies Inc. | Bell sound synthesizer |
| US5528682A (en) * | 1995-01-30 | 1996-06-18 | Harris Corporation | Double duty capacitor circuit and method |
| DE19548063C2 (de) * | 1995-12-21 | 1998-03-12 | Siemens Ag | Schaltungsanordnung zum Schutz einer Teilnehmerschaltung eines Fernmeldevermittlungssystems |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5328317A (en) * | 1976-08-30 | 1978-03-16 | Hitachi Ltd | Control system of subscriber's calling signal |
| IT1071838B (it) * | 1976-11-12 | 1985-04-10 | Cselt Centro Studi Lab Telecom | Soppressore di impulsi di suoneria indesiderati per apparecchi telefonici |
| NL7700719A (nl) * | 1977-01-25 | 1978-07-27 | Philips Nv | Storingsongevoelig lijnsupervisiecircuit. |
| FR2451682A1 (fr) * | 1979-03-12 | 1980-10-10 | Jeumont Schneider | Dispositif d'appel pour installation telephonique automatique d'abonne avec postes supplementaires |
-
1987
- 1987-10-08 SE SE8703890A patent/SE459138B/sv unknown
-
1988
- 1988-09-08 ES ES198888850295T patent/ES2029730T3/es not_active Expired - Lifetime
- 1988-09-08 AU AU25337/88A patent/AU604383B2/en not_active Expired
- 1988-09-08 WO PCT/SE1988/000460 patent/WO1989003625A1/en active IP Right Grant
- 1988-09-08 EP EP88850295A patent/EP0311580B1/en not_active Expired - Lifetime
- 1988-09-08 DE DE8888850295T patent/DE3868478D1/de not_active Expired - Lifetime
- 1988-09-08 BR BR888807236A patent/BR8807236A/pt not_active IP Right Cessation
- 1988-09-08 JP JP63508052A patent/JPH02501525A/ja active Pending
- 1988-09-12 US US07/242,979 patent/US4908854A/en not_active Expired - Lifetime
- 1988-09-15 TR TR00661/88A patent/TR28806A/xx unknown
- 1988-09-20 MY MYPI88001049A patent/MY103396A/en unknown
- 1988-09-23 MX MX013121A patent/MX169117B/es unknown
- 1988-09-30 IE IE296188A patent/IE61777B1/en not_active IP Right Cessation
- 1988-10-06 AR AR88312131A patent/AR243045A1/es active
- 1988-10-08 CN CN88109128A patent/CN1014292B/zh not_active Expired
- 1988-10-09 EG EG517/88A patent/EG18642A/xx active
-
1989
- 1989-05-18 FI FI892401A patent/FI98179C/sv not_active IP Right Cessation
- 1989-05-20 KR KR89700890A patent/KR950013625B1/ko not_active IP Right Cessation
- 1989-05-31 DK DK265989A patent/DK168316B1/da not_active IP Right Cessation
-
1992
- 1992-02-28 GR GR920400350T patent/GR3003929T3/el unknown
Also Published As
| Publication number | Publication date |
|---|---|
| AU2533788A (en) | 1989-05-02 |
| SE459138B (sv) | 1989-06-05 |
| GR3003929T3 (es) | 1993-03-16 |
| EP0311580B1 (en) | 1992-02-19 |
| DK265989A (da) | 1989-05-31 |
| IE61777B1 (en) | 1994-11-30 |
| CN1014292B (zh) | 1991-10-09 |
| SE8703890D0 (sv) | 1987-10-08 |
| EG18642A (en) | 1993-08-30 |
| JPH02501525A (ja) | 1990-05-24 |
| IE882961L (en) | 1989-04-08 |
| AU604383B2 (en) | 1990-12-13 |
| TR28806A (tr) | 1997-03-25 |
| FI98179C (sv) | 1997-04-25 |
| KR950013625B1 (en) | 1995-11-13 |
| FI892401A0 (fi) | 1989-05-18 |
| EP0311580A1 (en) | 1989-04-12 |
| FI892401A (fi) | 1989-05-18 |
| WO1989003625A1 (en) | 1989-04-20 |
| MY103396A (en) | 1993-06-30 |
| DE3868478D1 (de) | 1992-03-26 |
| US4908854A (en) | 1990-03-13 |
| BR8807236A (pt) | 1989-10-31 |
| CN1032610A (zh) | 1989-04-26 |
| FI98179B (fi) | 1997-01-15 |
| AR243045A1 (es) | 1993-06-30 |
| DK265989D0 (da) | 1989-05-31 |
| KR890702363A (ko) | 1989-12-23 |
| SE8703890L (sv) | 1989-04-09 |
| ES2029730T3 (es) | 1992-09-01 |
| DK168316B1 (da) | 1994-03-07 |
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