DE313849C - - Google Patents
Info
- Publication number
- DE313849C DE313849C DENDAT313849D DE313849DA DE313849C DE 313849 C DE313849 C DE 313849C DE NDAT313849 D DENDAT313849 D DE NDAT313849D DE 313849D A DE313849D A DE 313849DA DE 313849 C DE313849 C DE 313849C
- Authority
- DE
- Germany
- Prior art keywords
- buzzer
- call
- stations
- switched
- relay
- 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
- 230000001939 inductive effect Effects 0.000 claims 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M9/00—Arrangements for interconnection not involving centralised switching
- H04M9/001—Two-way communication systems between a limited number of parties
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/71—Substation extension arrangements
- H04M1/715—Substation extension arrangements using two or more extensions per line
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Telephone Set Structure (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE313849C true DE313849C (cs) |
Family
ID=566700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT313849D Active DE313849C (cs) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE313849C (cs) |
-
0
- DE DENDAT313849D patent/DE313849C/de active Active
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