ES8206125A1 - Un modulo de enlace-abonado analogico con generador y ring- trip de llamada compartidos - Google Patents
Un modulo de enlace-abonado analogico con generador y ring- trip de llamada compartidosInfo
- Publication number
- ES8206125A1 ES8206125A1 ES500922A ES500922A ES8206125A1 ES 8206125 A1 ES8206125 A1 ES 8206125A1 ES 500922 A ES500922 A ES 500922A ES 500922 A ES500922 A ES 500922A ES 8206125 A1 ES8206125 A1 ES 8206125A1
- Authority
- ES
- Spain
- Prior art keywords
- ringing
- lines
- signal bus
- line
- group
- 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
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
- H04M19/023—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone by reversing the polarity of the current at the exchange
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Devices For Supply Of Signal Current (AREA)
- Interface Circuits In Exchanges (AREA)
- Telephone Function (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
- Optical Communication System (AREA)
- Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
- Mobile Radio Communication Systems (AREA)
- Telephonic Communication Services (AREA)
- Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
Abstract
SISTEMA DE ENTRADA DE LINEAS DE USARIO EN CENTRALES DE CONMUTACION. COMPRENDE CIRCUITOS DE TERMINACION DE LINEAS DE USARIO, CIRCUITOS DE TRATAMIENTO DE SEÑALES DIGITALES, GENERADOS DE SEÑALES DE LLAMADA, CIRCUITO DE LLAMADA COMPARTIDA (RING-TIP) Y CIRCUITO LOGICO DE ACTIVACION DE LAS SEÑALES DE LLAMADA. LOS CIRCUITOS DE TERMINACION DE LINEAS PROPORCIONAN ENTRADAS EN LA CENTRAL A ENLACES DE USARIO PORTADORES DE SEÑALES DE COMUNICACION ANALOGICAS Y BIDIRECCIONALES. ESTOS ENLACES SUFREN UN MULTIPLEXADO POR DIVISION DE TIEMPO, UNA DIGITALIZACION DE SEÑALES, UN ACOPLAMIENTO A SEÑALES DE CONTROL DE LLAMADA GENERADAS POR EL CIRCUITO.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13575680A | 1980-03-31 | 1980-03-31 |
Publications (2)
Publication Number | Publication Date |
---|---|
ES8206125A1 true ES8206125A1 (es) | 1982-08-16 |
ES500922A0 ES500922A0 (es) | 1982-08-16 |
Family
ID=22469517
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES500922A Granted ES500922A0 (es) | 1980-03-31 | 1981-03-31 | Un modulo de enlace-abonado analogico con generador y ring- trip de llamada compartidos |
Country Status (11)
Country | Link |
---|---|
EP (1) | EP0037540B1 (es) |
JP (1) | JPS56152361A (es) |
AT (1) | ATE17294T1 (es) |
AU (1) | AU541648B2 (es) |
BE (1) | BE888193A (es) |
BR (1) | BR8101844A (es) |
CA (1) | CA1172737A (es) |
DE (1) | DE3173346D1 (es) |
ES (1) | ES500922A0 (es) |
MX (1) | MX150197A (es) |
NO (1) | NO155598C (es) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2128449B (en) * | 1982-10-08 | 1985-12-11 | Standard Telephones Cables Ltd | Tone generation circuit |
US4656659A (en) * | 1985-07-18 | 1987-04-07 | Itt Corporation | Programmable ring signal generator |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2129281A5 (es) * | 1971-03-11 | 1972-10-27 | Ibm France | |
US4097694A (en) * | 1975-07-09 | 1978-06-27 | Toa Electric Company, Ltd. | Time-division telephone system embodying trunks having demodulating-adder circuits |
JPS53124008A (en) * | 1977-04-06 | 1978-10-30 | Oki Electric Ind Co Ltd | Call signal transmission system |
-
1981
- 1981-03-26 MX MX186568A patent/MX150197A/es unknown
- 1981-03-26 AU AU68765/81A patent/AU541648B2/en not_active Ceased
- 1981-03-27 BR BR8101844A patent/BR8101844A/pt not_active IP Right Cessation
- 1981-03-28 EP EP81102363A patent/EP0037540B1/de not_active Expired
- 1981-03-28 DE DE8181102363T patent/DE3173346D1/de not_active Expired
- 1981-03-28 AT AT81102363T patent/ATE17294T1/de not_active IP Right Cessation
- 1981-03-30 CA CA000374135A patent/CA1172737A/en not_active Expired
- 1981-03-31 BE BE2/59088A patent/BE888193A/nl not_active IP Right Cessation
- 1981-03-31 ES ES500922A patent/ES500922A0/es active Granted
- 1981-03-31 NO NO811094A patent/NO155598C/no unknown
- 1981-03-31 JP JP4658281A patent/JPS56152361A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
NO155598C (no) | 1987-04-22 |
EP0037540A2 (de) | 1981-10-14 |
EP0037540B1 (de) | 1986-01-02 |
NO811094L (no) | 1981-10-01 |
EP0037540A3 (en) | 1982-09-15 |
CA1172737A (en) | 1984-08-14 |
BR8101844A (pt) | 1981-10-06 |
AU6876581A (en) | 1981-10-08 |
MX150197A (es) | 1984-03-29 |
BE888193A (nl) | 1981-09-30 |
NO155598B (no) | 1987-01-12 |
ATE17294T1 (de) | 1986-01-15 |
JPH0342534B2 (es) | 1991-06-27 |
DE3173346D1 (en) | 1986-02-13 |
ES500922A0 (es) | 1982-08-16 |
JPS56152361A (en) | 1981-11-25 |
AU541648B2 (en) | 1985-01-17 |
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