DE290097C - - Google Patents
Info
- Publication number
- DE290097C DE290097C DENDAT290097D DE290097DA DE290097C DE 290097 C DE290097 C DE 290097C DE NDAT290097 D DENDAT290097 D DE NDAT290097D DE 290097D A DE290097D A DE 290097DA DE 290097 C DE290097 C DE 290097C
- Authority
- DE
- Germany
- Prior art keywords
- connection
- relay
- exchange
- signaling
- extension
- 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.)
- Active
Links
- 230000011664 signaling Effects 0.000 claims description 8
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 230000000994 depressogenic effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M5/00—Manual exchanges
- H04M5/04—Arrangements for indicating calls or supervising connections for calling or clearing
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Sub-Exchange Stations And Push- Button Telephones (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE290097C true DE290097C (https=) |
Family
ID=545083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT290097D Active DE290097C (https=) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE290097C (https=) |
-
0
- DE DENDAT290097D patent/DE290097C/de active Active
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