DE3064323D1 - Device for detecting the looping of a subscriber line during ringing - Google Patents
Device for detecting the looping of a subscriber line during ringingInfo
- Publication number
- DE3064323D1 DE3064323D1 DE8080201081T DE3064323T DE3064323D1 DE 3064323 D1 DE3064323 D1 DE 3064323D1 DE 8080201081 T DE8080201081 T DE 8080201081T DE 3064323 T DE3064323 T DE 3064323T DE 3064323 D1 DE3064323 D1 DE 3064323D1
- Authority
- DE
- Germany
- Prior art keywords
- looping
- detecting
- subscriber line
- line during
- during ringing
- 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
- H04M19/026—Arrangements for interrupting the ringing current
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7928722A FR2470498A1 (fr) | 1979-11-21 | 1979-11-21 | Dispositif de detection du bouclage d'une ligne d'abonne pendant la sonnerie |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3064323D1 true DE3064323D1 (en) | 1983-08-25 |
Family
ID=9231952
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8080201081T Expired DE3064323D1 (en) | 1979-11-21 | 1980-11-13 | Device for detecting the looping of a subscriber line during ringing |
Country Status (7)
Country | Link |
---|---|
US (1) | US4356355A (de) |
EP (1) | EP0029627B1 (de) |
JP (1) | JPS5686564A (de) |
AU (1) | AU537449B2 (de) |
CA (1) | CA1152663A (de) |
DE (1) | DE3064323D1 (de) |
FR (1) | FR2470498A1 (de) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1155661B (it) * | 1982-03-24 | 1987-01-28 | Cselt Centro Studi Lab Telecom | Circuito elettronico per la rivelazione dello sgancio del microtelefono in presenza della corrente di chiamata |
FR2531296B1 (fr) * | 1982-07-30 | 1988-04-15 | Cit Alcatel | Procede et dispositif de detection de boucle en phase sonnerie |
US4447675A (en) * | 1982-10-29 | 1984-05-08 | Bell Telephone Laboratories, Incorporated | Ring-trip detector |
US4524245A (en) * | 1983-01-13 | 1985-06-18 | Redcom Laboratories Inc. | Ring trip detection system |
IT1212838B (it) * | 1983-11-23 | 1989-11-30 | Ates Componenti Elettron | Circuito telefonico, integrabile monoliticamente, per il riconoscimento dello sgancio in fase di suoneria. |
DE3675189D1 (de) * | 1985-12-20 | 1990-11-29 | Siemens Ag | Schaltungsanordnung zur schleifenschlussindikation waehrend der rufphase. |
DE3545574A1 (de) * | 1985-12-21 | 1987-07-02 | Philips Patentverwaltung | Verfahren und schaltungsanordnung zur auswertung der ausgangssignale von stromflussdetektoren in fernmeldeanlagen |
CA1291835C (en) * | 1987-06-19 | 1991-11-05 | Toshiro Tojo | Ring trip circuit for subscriber telephone |
US4870497A (en) * | 1988-01-22 | 1989-09-26 | American Telephone And Telegraph Company | Progressive transmission of high resolution two-tone facsimile images |
JPH05145627A (ja) * | 1991-09-12 | 1993-06-11 | Fujitsu Ltd | リングトリツプ検出回路 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3312787A (en) * | 1963-10-17 | 1967-04-04 | Stromberg Carlson Corp | Signaling system |
US3321583A (en) * | 1964-03-25 | 1967-05-23 | Bell Telephone Labor Inc | Supervisory circuit for telephone subscriber's line |
DE2014950B2 (de) * | 1970-03-28 | 1976-01-02 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | Verfahren und Schaltungsanordnung zur Rufabschaltung in Fernmelde-, insbesondere Fernsprechanlagen |
US3746798A (en) * | 1972-05-23 | 1973-07-17 | Gte Automatic Electric Lab Inc | Electronic ring trip circuit |
US3838223A (en) * | 1973-10-01 | 1974-09-24 | Gte Automatic Electric Lab Inc | Ring trip and dial pulse detection circuit |
DE2359867C2 (de) * | 1973-11-30 | 1975-10-23 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Schaltungsanordnung für wechselstromüberlagerte Gleichstromkreise in Fernmeldeinsbesondere Fernsprechanlagen |
US4037117A (en) * | 1976-03-15 | 1977-07-19 | Bell Telephone Laboratories, Incorporated | Peak shut-off electronic switch |
CH604453A5 (de) * | 1976-06-25 | 1978-09-15 | Ibm | |
FR2386210A1 (fr) * | 1977-03-31 | 1978-10-27 | Ibm France | Circuit de ligne telephonique |
US4262172A (en) * | 1980-01-17 | 1981-04-14 | Bell Telephone Laboratories, Incorporated | Ring-trip detector |
-
1979
- 1979-11-21 FR FR7928722A patent/FR2470498A1/fr active Granted
-
1980
- 1980-11-13 EP EP80201081A patent/EP0029627B1/de not_active Expired
- 1980-11-13 CA CA000364575A patent/CA1152663A/en not_active Expired
- 1980-11-13 DE DE8080201081T patent/DE3064323D1/de not_active Expired
- 1980-11-17 US US06/207,118 patent/US4356355A/en not_active Expired - Lifetime
- 1980-11-18 AU AU64472/80A patent/AU537449B2/en not_active Ceased
- 1980-11-21 JP JP16447480A patent/JPS5686564A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
EP0029627A1 (de) | 1981-06-03 |
FR2470498B1 (de) | 1982-06-18 |
CA1152663A (en) | 1983-08-23 |
FR2470498A1 (fr) | 1981-05-29 |
JPS6254264B2 (de) | 1987-11-13 |
US4356355A (en) | 1982-10-26 |
AU537449B2 (en) | 1984-06-21 |
JPS5686564A (en) | 1981-07-14 |
EP0029627B1 (de) | 1983-07-20 |
AU6447280A (en) | 1981-05-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8339 | Ceased/non-payment of the annual fee |