DE151648C - - Google Patents
Info
- Publication number
- DE151648C DE151648C DENDAT151648D DE151648DA DE151648C DE 151648 C DE151648 C DE 151648C DE NDAT151648 D DENDAT151648 D DE NDAT151648D DE 151648D A DE151648D A DE 151648DA DE 151648 C DE151648 C DE 151648C
- Authority
- DE
- Germany
- Prior art keywords
- call
- battery
- subscriber
- line
- microphone
- 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
- 238000004804 winding Methods 0.000 description 7
- 238000012544 monitoring process Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M9/00—Arrangements for interconnection not involving centralised switching
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Interface Circuits In Exchanges (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE151648C true DE151648C (https=) |
Family
ID=418453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT151648D Active DE151648C (https=) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE151648C (https=) |
-
0
- DE DENDAT151648D patent/DE151648C/de active Active
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