SE7017188L - - Google Patents
Info
- Publication number
- SE7017188L SE7017188L SE7017188A SE7017188A SE7017188L SE 7017188 L SE7017188 L SE 7017188L SE 7017188 A SE7017188 A SE 7017188A SE 7017188 A SE7017188 A SE 7017188A SE 7017188 L SE7017188 L SE 7017188L
- Authority
- SE
- Sweden
Links
Classifications
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- 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
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- 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
- H04M19/048—Arrangements providing optical indication of the incoming call, e.g. flasher circuits
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE7017188T |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SE7017188L true SE7017188L (Sortimente) | 1972-06-19 |
Family
ID=44678511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE7017188A SE7017188L (Sortimente) |
Country Status (1)
| Country | Link |
|---|---|
| SE (1) | SE7017188L (Sortimente) |
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0
- SE SE7017188A patent/SE7017188L/xx unknown