FR2269251B1 - - Google Patents
Info
- Publication number
- FR2269251B1 FR2269251B1 FR7414673A FR7414673A FR2269251B1 FR 2269251 B1 FR2269251 B1 FR 2269251B1 FR 7414673 A FR7414673 A FR 7414673A FR 7414673 A FR7414673 A FR 7414673A FR 2269251 B1 FR2269251 B1 FR 2269251B1
- Authority
- FR
- France
- 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
- H04M19/04—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone the ringing-current being generated at the substations
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Devices For Supply Of Signal Current (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7414673A FR2269251A1 (en) | 1974-04-26 | 1974-04-26 | Telephone receiver with ringing apparatus - has bell permanently across line with shunt to prevent outgoing calls ringing local bell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7414673A FR2269251A1 (en) | 1974-04-26 | 1974-04-26 | Telephone receiver with ringing apparatus - has bell permanently across line with shunt to prevent outgoing calls ringing local bell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2269251A1 FR2269251A1 (en) | 1975-11-21 |
| FR2269251B1 true FR2269251B1 (online.php) | 1979-10-12 |
Family
ID=9138206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7414673A Granted FR2269251A1 (en) | 1974-04-26 | 1974-04-26 | Telephone receiver with ringing apparatus - has bell permanently across line with shunt to prevent outgoing calls ringing local bell |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2269251A1 (online.php) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1071838B (it) * | 1976-11-12 | 1985-04-10 | Cselt Centro Studi Lab Telecom | Soppressore di impulsi di suoneria indesiderati per apparecchi telefonici |
-
1974
- 1974-04-26 FR FR7414673A patent/FR2269251A1/fr active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| FR2269251A1 (en) | 1975-11-21 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |