PT98386A - Circuito de ligacao de posto de assinante para a ligacao de uma linha de ligacao de assinante para a transmissao de sinais anologicos do assinante para a estacao de comutacao de um sistema de comutacao telefonica digital multiplex por divisao do tempo - Google Patents
Circuito de ligacao de posto de assinante para a ligacao de uma linha de ligacao de assinante para a transmissao de sinais anologicos do assinante para a estacao de comutacao de um sistema de comutacao telefonica digital multiplex por divisao do tempoInfo
- Publication number
- PT98386A PT98386A PT98386A PT9838691A PT98386A PT 98386 A PT98386 A PT 98386A PT 98386 A PT98386 A PT 98386A PT 9838691 A PT9838691 A PT 9838691A PT 98386 A PT98386 A PT 98386A
- Authority
- PT
- Portugal
- Prior art keywords
- subscriber
- wire
- anological
- division
- signals
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M19/00—Current supply arrangements for telephone systems
- H04M19/001—Current supply source at the exchanger providing current to substations
- H04M19/005—Feeding arrangements without the use of line transformers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/54—Circuits using the same frequency for two directions of communication
- H04B1/58—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
- H04B1/586—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa using an electronic circuit
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/005—Interface circuits for subscriber lines
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Interface Circuits In Exchanges (AREA)
- Time-Division Multiplex Systems (AREA)
- Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4022961 | 1990-07-19 | ||
DE4029819 | 1990-09-20 |
Publications (2)
Publication Number | Publication Date |
---|---|
PT98386A true PT98386A (pt) | 1993-09-30 |
PT98386B PT98386B (pt) | 1999-01-29 |
Family
ID=25895169
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PT98386A PT98386B (pt) | 1990-07-19 | 1991-07-19 | Circuito de ligacao de posto de assinante para a ligacao de uma linha de ligacao de assinante para a transmissao de sinais anologicos do assinante para a estacao de comutacao de um sistema de comutacao telefonica digital multiplex por divisao do tempo |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0467367B1 (pt) |
AT (1) | ATE148605T1 (pt) |
DE (1) | DE59108519D1 (pt) |
ES (1) | ES2096603T3 (pt) |
GR (1) | GR3022896T3 (pt) |
PT (1) | PT98386B (pt) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2097354A1 (en) * | 1992-08-06 | 1994-02-07 | Ian A. Schorr | Battery feed circuit |
WO2000042759A1 (de) * | 1999-01-15 | 2000-07-20 | Infineon Technologies Ag | Schaltungsanordnung zum bilden des abschlusses einer analogen teilnehmerleitung |
US6788784B1 (en) | 1999-01-15 | 2004-09-07 | Infineon Technologies Ag | Circuit arrangement for signaling in telecommunications networks |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1154185A (en) * | 1981-01-23 | 1983-09-20 | Patrick R. Beirne | Subscriber line interface circuit |
EP0163298B1 (en) * | 1984-05-30 | 1992-09-30 | Hitachi, Ltd. | Pcm coder/decoder with two-wire/four-wire conversion |
US4661979A (en) * | 1985-09-24 | 1987-04-28 | Northern Telecom Limited | Fault protection for integrated subscriber line interface circuits |
EP0217130B1 (de) * | 1985-09-30 | 1992-04-08 | Siemens Aktiengesellschaft | Schaltungsanordnung für eine elektronische Schnittstellenschaltung |
-
1991
- 1991-07-18 ES ES91112036T patent/ES2096603T3/es not_active Expired - Lifetime
- 1991-07-18 DE DE59108519T patent/DE59108519D1/de not_active Expired - Fee Related
- 1991-07-18 EP EP91112036A patent/EP0467367B1/de not_active Expired - Lifetime
- 1991-07-18 AT AT91112036T patent/ATE148605T1/de not_active IP Right Cessation
- 1991-07-19 PT PT98386A patent/PT98386B/pt not_active IP Right Cessation
-
1997
- 1997-03-24 GR GR970400578T patent/GR3022896T3/el unknown
Also Published As
Publication number | Publication date |
---|---|
ATE148605T1 (de) | 1997-02-15 |
PT98386B (pt) | 1999-01-29 |
EP0467367B1 (de) | 1997-01-29 |
ES2096603T3 (es) | 1997-03-16 |
DE59108519D1 (de) | 1997-03-13 |
GR3022896T3 (en) | 1997-06-30 |
EP0467367A1 (de) | 1992-01-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
BB1A | Laying open of patent application |
Effective date: 19930330 |
|
FG3A | Patent granted, date of granting |
Effective date: 19981002 |
|
MM3A | Annulment or lapse |
Free format text: LAPSE DUE TO NON-PAYMENT OF FEES Effective date: 20000430 |