DE301025C - - Google Patents
Info
- Publication number
- DE301025C DE301025C DENDAT301025D DE301025DA DE301025C DE 301025 C DE301025 C DE 301025C DE NDAT301025 D DENDAT301025 D DE NDAT301025D DE 301025D A DE301025D A DE 301025DA DE 301025 C DE301025 C DE 301025C
- Authority
- DE
- Germany
- Prior art keywords
- switching
- switch
- call
- line
- double line
- 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
- 230000007246 mechanism Effects 0.000 claims description 4
- 230000004913 activation Effects 0.000 claims 1
- OWWYREKLGMILGW-UHFFFAOYSA-N δline Chemical compound COC1C2C3C4(C5C6OC(C)=O)C(OC)CCC5(C)CN(CC)C4C46OCOC42CC(OC)C1C3 OWWYREKLGMILGW-UHFFFAOYSA-N 0.000 description 4
- 230000006698 induction Effects 0.000 description 2
- 241000947840 Alteromonadales Species 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q5/00—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange
- H04Q5/02—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange with direct connection for all subscribers, i.e. party-line systems
- H04Q5/14—Signalling by pulses
- H04Q5/16—Signalling by pulses by predetermined number of pulses
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Devices For Supply Of Signal Current (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE301025C true DE301025C (en:Method) |
Family
ID=554955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT301025D Active DE301025C (en:Method) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE301025C (en:Method) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4060700A (en) * | 1975-06-13 | 1977-11-29 | Telefonaktiebolaget L M Ericsson | Two-party telephone system |
-
0
- DE DENDAT301025D patent/DE301025C/de active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4060700A (en) * | 1975-06-13 | 1977-11-29 | Telefonaktiebolaget L M Ericsson | Two-party telephone system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE640495C (de) | Schaltanordnung fuer Wahlfernsprechanlagen | |
| DE3029024C2 (en:Method) | ||
| DE863677C (de) | Wechselsprech-Lautsprecheranlage mit Konferenzbetrieb | |
| DE604407C (en:Method) | ||
| DE513804C (de) | Fernsprechlinienwaehleranlage mit Sperrschaltung | |
| DE568304C (de) | Fernsprechlinienwaehlanlage fuer Geheimverkehr mit jeder Sprechstelle zugeordnetem Anschaltrelais | |
| DE292386C (en:Method) | ||
| DE928296C (de) | Schaltungsanordnung fuer batterielose Fernsprechanlagen in Dreileiter-schaltung mit Untereinanderverkehr saemtlicher Sprechstellen | |
| DE162178C (en:Method) | ||
| DE216624C (en:Method) | ||
| DE962269C (de) | Schaltungsanordnung fuer Fernsprechanlagen mit Tastaturwahl | |
| DE242794C (en:Method) | ||
| DE311718C (en:Method) | ||
| DE152606C (en:Method) | ||
| DE263072C (en:Method) | ||
| DE683014C (de) | Schaltung fuer Fernsprechanlagen mit Waehlerbetrieb | |
| AT120149B (de) | Einrichtung an Fernsprechsystemen für Zugleitung. | |
| DE225724C (en:Method) | ||
| DE174079C (en:Method) | ||
| DE181812C (en:Method) | ||
| DE313093C (en:Method) | ||
| DE156334C (de) | Selbsttätiges Fernsprechvermittelungssystem | |
| DE317593C (en:Method) | ||
| DE534557C (de) | Anordnung zur selbsttaetigen Weitergabe von Amtsanrufen in Linienwaehleranlagen fuerHaus- und Amtsverkehr bei unbesetzter Hauptstelle | |
| DE2117761C3 (de) | Verfahren und Schaltungsanordnung für einen Notrufmelder |