JPS4992910A - - Google Patents
Info
- Publication number
- JPS4992910A JPS4992910A JP48082558A JP8255873A JPS4992910A JP S4992910 A JPS4992910 A JP S4992910A JP 48082558 A JP48082558 A JP 48082558A JP 8255873 A JP8255873 A JP 8255873A JP S4992910 A JPS4992910 A JP S4992910A
- Authority
- JP
- Japan
- 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.)
- Pending
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
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Devices For Supply Of Signal Current (AREA)
- Interface Circuits In Exchanges (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7226123A FR2193529A5 (ja) | 1972-07-20 | 1972-07-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS4992910A true JPS4992910A (ja) | 1974-09-04 |
Family
ID=9102110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP48082558A Pending JPS4992910A (ja) | 1972-07-20 | 1973-07-20 |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US3882282A (ja) |
| JP (1) | JPS4992910A (ja) |
| BE (1) | BE802532A (ja) |
| CA (1) | CA990422A (ja) |
| DE (1) | DE2335038B2 (ja) |
| FR (1) | FR2193529A5 (ja) |
| GB (1) | GB1432666A (ja) |
| IT (1) | IT989882B (ja) |
| LU (1) | LU68043A1 (ja) |
| NL (1) | NL7310043A (ja) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH600714A5 (ja) * | 1974-09-24 | 1978-06-30 | Siemens Ag Albis | |
| DE2547880C2 (de) * | 1975-10-25 | 1981-09-24 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | Schaltungsanordnung zur Erkennung von Betriebszuständen einer Teilnehmerleitung und zur Rufanschaltung sowie Rufabschaltung in Fernsprechvermittlungsanlagen |
| JPS5369504A (en) * | 1976-12-02 | 1978-06-21 | Fujitsu Ltd | Ring trip circuit |
| FR2451682A1 (fr) * | 1979-03-12 | 1980-10-10 | Jeumont Schneider | Dispositif d'appel pour installation telephonique automatique d'abonne avec postes supplementaires |
| DE2911584C2 (de) * | 1979-03-23 | 1981-06-11 | Siemens AG, 1000 Berlin und 8000 München | Teilnehmeranschlußschaltung mit Erdtastenbetätigungsindikation, hochohmig schaltbarer Speisung und Einrichtung zur Rufsignalerzeugung |
| DE4019365A1 (de) * | 1990-06-18 | 1991-12-19 | Philips Patentverwaltung | Schaltungsanordnung fuer ein teilnehmergeraet |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL267227A (ja) * | 1960-07-21 | |||
| US3145266A (en) * | 1961-06-29 | 1964-08-18 | Gen Electric | A. c. static switching circuits |
-
1972
- 1972-07-20 FR FR7226123A patent/FR2193529A5/fr not_active Expired
-
1973
- 1973-07-10 DE DE2335038A patent/DE2335038B2/de active Pending
- 1973-07-11 GB GB3298973A patent/GB1432666A/en not_active Expired
- 1973-07-13 IT IT51471/73A patent/IT989882B/it active
- 1973-07-18 LU LU68043A patent/LU68043A1/xx unknown
- 1973-07-18 US US380393A patent/US3882282A/en not_active Expired - Lifetime
- 1973-07-19 BE BE1005247A patent/BE802532A/xx unknown
- 1973-07-19 NL NL7310043A patent/NL7310043A/xx unknown
- 1973-07-19 CA CA176,832A patent/CA990422A/fr not_active Expired
- 1973-07-20 JP JP48082558A patent/JPS4992910A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| LU68043A1 (ja) | 1973-09-26 |
| IT989882B (it) | 1975-06-10 |
| NL7310043A (ja) | 1974-01-22 |
| CA990422A (fr) | 1976-06-01 |
| DE2335038B2 (de) | 1975-04-17 |
| DE2335038A1 (de) | 1974-02-14 |
| BE802532A (fr) | 1973-11-16 |
| US3882282A (en) | 1975-05-06 |
| FR2193529A5 (ja) | 1974-02-15 |
| GB1432666A (en) | 1976-04-22 |