DE635247C - Circuit arrangement for telephone line dialer systems with secret traffic and automatic call disconnection - Google Patents
Circuit arrangement for telephone line dialer systems with secret traffic and automatic call disconnectionInfo
- Publication number
- DE635247C DE635247C DEF78264D DEF0078264D DE635247C DE 635247 C DE635247 C DE 635247C DE F78264 D DEF78264 D DE F78264D DE F0078264 D DEF0078264 D DE F0078264D DE 635247 C DE635247 C DE 635247C
- Authority
- DE
- Germany
- Prior art keywords
- station
- relay
- circuit
- stage
- switch
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M9/00—Arrangements for interconnection not involving centralised switching
- H04M9/002—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Monitoring And Testing Of Exchanges (AREA)
Description
Die Erfindung bezieht sich auf Fernsprech-Linienwähler-Anlagen, bei denen die Aufschaltung eines Teilnehmers auf -eine bestehende Verbindung verhindert (Geheimverkehr) und beim Antworten eines verlangten Teilnehmers selbsttätig der Rufstrom über die angerufene Station abgeschaltet wird. Zur Erfüllung dieser Bedingungen ist bei den bekannten Linienwähleranlagen ein großer Aufwand an Schalteinrichtungen an den einzelnen Stationen erforderlich gewesen.The invention relates to telephone line dialer systems in which the intrusion of a subscriber to -an existing connection prevented (secret traffic) and when a requested subscriber answers, the call flow automatically over the called Station is switched off. In order to meet these conditions, the known line dialing systems a great deal of switching equipment at the individual stations is required been.
Die vorliegende Erfindung bezweckt, diesen Nachteil zu beheben, und sie erreicht dies dadurch, daß jeder Station ein Stufenrelais zugeordnet ist, welches bei Einleitung einer Verbindung von dieser Station aus in der ersten Stufe die Sperrung der Station gegen Anrufe und die Einschaltung des Rufstromkreises über die angerufene Station und inThe present invention aims and achieves this disadvantage in that each station is assigned a stage relay, which when a Connection from this station in the first stage against the blocking of the station Calls and the activation of the ringing circuit via the called station and in
ao der zweiten Stufe beim Antworten der gerufenen Station die Abschaltung des Rufstromes und die Durchschaltung der Sprechverbindung vornimmt.ao of the second stage when the called station answers the disconnection of the ringing current and carries out the switching through of the voice connection.
Beim Antworten der gerufenen Station wird das Stufenrelais dieser Station mit voller Erregung eingeschaltet und ein Widerstand im Stromkreis des Stufenrelais der anrufenden Station kurzgeschlossen. Es wird also mittels eines einzigen, in zwei Stufen arbeitenden Stufenrelais je Station einerseits die Prüfung bzw. Geheimschaltung und andererseits die selbsttätige Rufabschaltung und Durchschaltung der Sprechleitungen beim Antworten der gewählten Station erzielt.When the called station answers, the step relay of this station becomes full Excitation switched on and a resistance in the circuit of the step relay of the calling party Station shorted. So it is by means of a single, working in two stages Step relay per station on the one hand the test or secret circuit and on the other hand the automatic call disconnection and switching through of the speech lines when the selected station answers.
In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt. Zur Auswahl eines gewünschten Teilnehmers ist in jeder Station ein dreiarmiger Drehwähler vorgesehen, der hinter dem Nummernschalter angeordnet und mit diesem so gekuppelt ist, daß er bei Einstellung der Fingerscheibe mitgenommen wird. Dieser Drehwähler geht durch Federzug in die Ruhelage zurück, wenn der Hörer aufgehängt oder die Fingerscheibe neuerdings aus der Ruhelage gebracht wird. N ist ein Kontakt, der offen ist, solange die Fingerscheibe aus der Ruhelage entfernt ist. W dagegen ist betätigt, solange der Drehwähler aus der Ruhelage entfernt ist. Jeder Station ist ferner ein Relais P zugeordnet, das in zwei Stufen arbeitet und in seiner ersten Stufe bei teilweiser Erregung seine beiden rechten Kontakte und bei voller Erregung in der zweiten Stufe noch seine beiden linken Kontakte umlegt.An exemplary embodiment of the invention is shown in the drawing. To select a desired participant, a three-armed rotary selector is provided in each station, which is arranged behind the number switch and is coupled to this in such a way that it is taken along when the finger washer is set. This rotary selector returns to the rest position by means of a spring tensioner when the receiver is hung up or the finger washer has recently been brought out of its rest position. N is a contact that is open as long as the finger washer is removed from the rest position. W, on the other hand, is actuated as long as the rotary selector is removed from the rest position. A relay P is also assigned to each station, which works in two stages and, in its first stage, when partially energized, flips its two right-hand contacts and, when fully energized, in the second stage, it also switches its two left-hand contacts.
Will Station 1 die Station 6 anrufen, so wird am Apparat 1 der Hö.rer abgehoben und an der Fingerscheibe die Ziffer 6 eingestellt. Dadurch wird der Drehwähler auf die drei Vielfachleiter der Station 6 eingestellt. Nach Rückkehr der Fingerscheibe des Apparates ι in die Ruhelage schließt sich folgender Stromkreis: -j-, Kontakte von W1, Relais P1, Kontakte /V1, Schaltarm C1 des Dreh-If station 1 wants to call station 6, the receiver is lifted on apparatus 1 and the number 6 is set on the finger disk. This will set the rotary selector to the three multiple conductors of station 6. After return of the finger washer of the apparatus ι in the rest position, the following circuit closes: -j-, contacts of W 1 , relay P 1 , contacts / V 1 , switching arm C 1 of the rotary
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEF78264D DE635247C (en) | 1934-10-25 | 1934-10-25 | Circuit arrangement for telephone line dialer systems with secret traffic and automatic call disconnection |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEF78264D DE635247C (en) | 1934-10-25 | 1934-10-25 | Circuit arrangement for telephone line dialer systems with secret traffic and automatic call disconnection |
Publications (1)
Publication Number | Publication Date |
---|---|
DE635247C true DE635247C (en) | 1936-09-12 |
Family
ID=7113043
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEF78264D Expired DE635247C (en) | 1934-10-25 | 1934-10-25 | Circuit arrangement for telephone line dialer systems with secret traffic and automatic call disconnection |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE635247C (en) |
-
1934
- 1934-10-25 DE DEF78264D patent/DE635247C/en not_active Expired
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