AT28786B - Circuit for the microphone handsets in central battery telephone systems. - Google Patents
Circuit for the microphone handsets in central battery telephone systems.Info
- Publication number
- AT28786B AT28786B AT28786DA AT28786B AT 28786 B AT28786 B AT 28786B AT 28786D A AT28786D A AT 28786DA AT 28786 B AT28786 B AT 28786B
- Authority
- AT
- Austria
- Prior art keywords
- microphone
- circuit
- telephone systems
- short
- central battery
- Prior art date
Links
- 241000282816 Giraffa camelopardalis Species 0.000 claims 1
- 239000003245 coal Substances 0.000 claims 1
- 230000011664 signaling Effects 0.000 claims 1
Landscapes
- Devices For Supply Of Signal Current (AREA)
Description
<Desc/Clms Page number 1>
Schaltung für die Mikrotelephon-Handapparate bei Zentralbatterie-Fernsprechanlagen.
Bei Zentralbatterie-Fernsprechanlagen mit selbsttätiger Schlusszeichengabe soll bekanntlich das Schlusszeichen erst erscheinen, wenn die Teilnehmer nach Beendigung des (Te-
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jedoch mit Mikrotelephon-Handapparaten ausgestattet, so erscheinen bisweilen die Schlusszeichen bereits dann, wenn die Teilnehmer ihre Mikrotelephone, beispielsweise weil sie ihren Platz verlassen müssen, aus der Hand legen. In diesem Falle können sich nämlich
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flir gewöhnlich, beispielsweise über eine im Griffe des Mikrotelephones angeordnete Taste kurzgeschlossen ist und lediglich beim Sprechen durch Offnen dieses Kurzschlusses ein- geschaltet wird.
Das Amt A der auf der Zeichnung dargestellten Fernsprechantage ist in bekannter Weise geschaltet, ebenso die Teilnehmerstelle B mit Ausnahme des nach vorliegender Erfindung über die in dem Griffe des Mikrotelephones a angeordnete Taste b geführten Kurzschlusses zu dem Mikrophone c. Es ist ohne weiteres ersichtlich, dass, so lange die
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**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
Circuit for the microphone handsets in central battery telephone systems.
In the case of central battery telephone systems with automatic closing signals, the closing signal should only appear if the participants after the end of the (tele-
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but equipped with microtelephone handsets, the final characters sometimes appear when the subscribers put down their microtelephones, for example because they have to leave their place. In this case, namely
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for is usually short-circuited, for example via a button arranged in the handle of the microtelephone, and is only switched on by opening this short-circuit when speaking.
The office A of the telephone system shown in the drawing is switched in a known manner, as is the subscriber station B with the exception of the short circuit to the microphone c, which is carried out according to the present invention via the button b arranged in the handle of the microtelephones a. It is readily apparent that as long as the
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** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1905173532D DE173532C (en) | 1905-08-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT28786B true AT28786B (en) | 1907-06-25 |
Family
ID=5690916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT28786D AT28786B (en) | 1905-08-10 | 1906-07-02 | Circuit for the microphone handsets in central battery telephone systems. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT28786B (en) |
-
1906
- 1906-07-02 AT AT28786D patent/AT28786B/en active
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