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
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE313849C (cs) | ||
| DE703783C (de) | Schaltungsanordnung fuer Fernsprechanlagen | |
| DE159826C (cs) | ||
| DE2520925A1 (de) | Schaltungsanordnung zum mithoeren von gespraechen ohne mitsprechmoeglichkeit | |
| DE583771C (de) | Verstaerkeranordnung fuer Fernsprechanlagen | |
| DE616655C (de) | Schaltungsanordnung zur Gespraechsueberwachung auf zweiadrigen Verbindungsleitungen in Fernsprechanlagen mit Wechselstromwahl | |
| DE303351C (cs) | ||
| DE280701C (cs) | ||
| DE872372C (de) | Fernkonferenzschaltung ueber Fernleitungen mit einer beliebigen Zahl von Teilnehmern | |
| DE259486C (cs) | ||
| DE112239C (cs) | ||
| DE309253C (cs) | ||
| DE167963C (cs) | ||
| DE143199C (cs) | ||
| DE161778C (cs) | ||
| AT115576B (de) | Schaltungsanordnung für Fernsprechanlagen. | |
| DE161065C (cs) | ||
| DE191346C (cs) | ||
| DE568304C (de) | Fernsprechlinienwaehlanlage fuer Geheimverkehr mit jeder Sprechstelle zugeordnetem Anschaltrelais | |
| DE952827C (de) | Gegensprechanlage | |
| DE274399C (cs) | ||
| DE150852C (cs) | ||
| DE168793C (cs) | ||
| DE303585C (cs) | ||
| AT167378B (de) | Schaltungsanordnung für Fernmelde- insbesondere Fernsprechanlagen |