BE631477A - - Google Patents
Info
- Publication number
- BE631477A BE631477A BE631477DA BE631477A BE 631477 A BE631477 A BE 631477A BE 631477D A BE631477D A BE 631477DA BE 631477 A BE631477 A BE 631477A
- Authority
- BE
- Belgium
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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Devices For Supply Of Signal Current (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES79142A DE1161957B (de) | 1962-04-24 | 1962-04-24 | Schaltungsanordnung zum Anrufen von Teilnehmern in Fernsprechanlagen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE631477A true BE631477A (US06826419-20041130-M00005.png) |
Family
ID=7507975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE631477D BE631477A (US06826419-20041130-M00005.png) | 1962-04-24 |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE631477A (US06826419-20041130-M00005.png) |
| DE (1) | DE1161957B (US06826419-20041130-M00005.png) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4028628A (en) * | 1975-12-05 | 1977-06-07 | Bell Telephone Laboratories, Incorporated | Transceivers for single channel carrier telephone systems |
-
0
- BE BE631477D patent/BE631477A/xx unknown
-
1962
- 1962-04-24 DE DES79142A patent/DE1161957B/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE1161957B (de) | 1964-01-30 |
