DE2432452A1 - Telephone instrument with flash key - has cct for delivery of brief interruption of specified duration - Google Patents
Telephone instrument with flash key - has cct for delivery of brief interruption of specified durationInfo
- Publication number
- DE2432452A1 DE2432452A1 DE2432452A DE2432452A DE2432452A1 DE 2432452 A1 DE2432452 A1 DE 2432452A1 DE 2432452 A DE2432452 A DE 2432452A DE 2432452 A DE2432452 A DE 2432452A DE 2432452 A1 DE2432452 A1 DE 2432452A1
- Authority
- DE
- Germany
- Prior art keywords
- flash
- key
- circuit arrangement
- flash key
- arrangement according
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/26—Devices for calling a subscriber
- H04M1/53—Generation of additional signals, e.g. additional pulses
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Telephonic Communication Services (AREA)
- Telephone Function (AREA)
Abstract
Description
Schaltungsanordnung zur garzzeitschließung definierter Länge In Fernsprechanlagen mit Mehrkanal-Frequenzwahl (MRV) wird vornehmlich zur I>urchführung von Umsteuerfunktionen eine eine definierte Kurzzeitunterbrechung liefernde Sondertaste, die Flash-Taste verwendet. Es ist bekannt, dieser Taste eine Doppelbedeutung und zwar kr die Betätigung bei abgehobenem und nicht abgehobenem Handapparat zu geben. Der letzte Fall soll in der Hauptsache zur Abgabe eines Direktrufkriteriums an die Zentrale genutzt werden.Circuit arrangement for cooking time locking of a defined length in telephone systems with multi-channel frequency selection (MRV) is primarily used to carry out reversing functions a special key delivering a defined short-term interruption, the flash key used. It is known that this key has a double meaning, namely for actuation to be given with the handset lifted and not lifted. The latter case is supposed to are mainly used to send a direct call criterion to the control center.
Um so einen Direktruf ausführen zu können, muß jedoch für den Signalweg ein Freiwerden von der Teilnehmeranschlußschaltung, oder anders ausgedrückt, eine das Signal weitergebende Belegung erfolgen. Zur Durchführung einer, wenn auch nur vorübergehenden Belegung werden besondere mit der Taste zu koppelnde Schaltmittel notwerrtig, Aufgabe der Erfindung soll die Verminderung des hierfür notwendigen Aufwands sein.In order to be able to carry out such a direct call, however, it is necessary for the signal path a release from the subscriber line circuit, or in other words, a the signal passing assignment take place. To carry out one, if only temporary occupancy are special switching means to be coupled with the button Necessary, the object of the invention is to reduce the amount necessary for this Be an expense.
Als Lösung wird die im Patentanspruch 1 angegebene Anordnung, die im Prinzip auf die Abgabe einer Kurz zeitschließung definierter Länge hinausläuft, angegeben.As a solution, the arrangement specified in claim 1, the in principle amounts to the delivery of a short-term locking of a defined length, specified.
Aufbau und Wirkungsweise lassen sich am besten in Verbindung mit zwei durch die Zeichnungen Fig. 1 und 2 belegte Ausführungsbeispiele erkennen. Fig. 1 zeigt eine rein mechanische und Fig. 2 eine mechanisch-elektronische Lösung, jedesmal unter Einbeziehung der bekannten Flash-Taste. In beiden Beispielen gleichartig sind die durch die Kontrollmittel C angedeutete Zentraleinrichtung, der Gabelumschalter U, die bei der Ruhelage des Gabelumschalters angeschaltete Anrufstrecke W und die den Anschluß der Leitung a/b bildende Sprech- und Wähleinrichtung A.The structure and mode of operation can best be combined with two Recognize by the drawings Fig. 1 and 2 occupied embodiments. Fig. 1 shows a purely mechanical and FIG. 2 a mechanical-electronic solution, each time including the familiar flash button. Same in both examples are the central device indicated by the control means C, the hook switch U, the call path W and the switched on in the rest position of the hook switch the connection of the line a / b forming speech and dialing device A.
Unterschiedlich sind lediglich die mit der Flash-Taste F verbundenen Schaltmittel. In Fig. 1 ist dieses ein zusätzlicher in die Flash-Steuerung einbezogener Arbeitskontakt oder im einfachsten Fall eine einfederige, durch die Schaltlage F"2 angebbare Arbeitsseite.The only differences are those associated with the flash key F. Switching means. In Fig. 1, this is an additional included in the flash control Normally open contact or, in the simplest case, a single-spring contact through switching position F "2 specifiable working page.
Der sich bei abgehobenem Handapparat, also Schaltlage U2 abspielende Vorgang ist bekannt, er führt bei Betätigung der Flash-Taste F zur definierten Kurz zeitunterbrechung. Neu dagogen ist der aus der Zeichnung Fig. 1 klar überschaubare Vorgang bei aufliegendem Handapparat, also der Gabelschaltlage U.1. Hier wird eine bei schnellen System klar auswertbare Kurz zeitschließung, die gleichzeitig Belegung und Signalabgabe zur Folge hat, hervorgerufen. Das erkannte Signal kann die Bedeutung "Direktruf" bekommen.The one that takes place when the handset is lifted, i.e. switch position U2 The process is known, it leads to the defined short when the Flash key F is pressed time interruption. What is new is that which is clearly visible from the drawing in FIG. 1 Process with the handset in place, i.e. the hook switch position U.1. Here is a in the case of a fast system, clearly evaluable short-term locking, the simultaneous occupancy and signal delivery. The detected signal can mean the Get "direct call".
Fig. 2 zeigt im Prinzip das gleiche, wie Fig. 1. Abweichend ist nur die Bildung der Stromschließung, die hier vorteilhaft unter Beibehaltung des mechanischen Aufbaus, d.h. ohne abändernde Ergänzung der bekannten Flash-Taste F lediglich durch Beigabe eines elektronischen Schaltzusatzes erzielbar ist. Dieser Schalt zu satz besteht im wesentlichen aus einem Transistor Tl, einem hochohmigen Widerstand R und einer Diode D. Zur Verbesserung der Schalteigenschaft kann die Anordnung, wie hier gezeigt, um eine kaskadische Transistorergänzung T2 erweitert werden.In principle, FIG. 2 shows the same as FIG. 1. The only difference is the formation of the current closure, which is advantageous here while maintaining the mechanical Structure, i.e. without modifying the well-known Flash key F simply by The addition of an electronic switch can be achieved. This switching set consists essentially of a transistor Tl, a high-value resistor R. and a diode D. To improve the switching property, the arrangement, such as shown here to be extended by a cascading transistor extension T2.
Im Ruhefall, der der Schaltlage U»1zentsprechend aufgelegtem Handapparat vorhanden ist, fließt durch den Widerstand R und die Diode D ein weit unter der Funktionsgrenze für die Zentral einrichtung liegender Strom, der jedoch, wenn mit Betätigung der Flash-Taste F der Kurzschluß zur Steuerstrecke der Transistoranordnung aufgehoben ist, das satte Durchschalten der Anordnung ermöglicht. Die Diode D ist für diesen Vorgang an sich überflüssig, ihre Bedeutung tritt erst bei abgehobenem Handapparat, also der Gabelschaltlage U2 ein. Der dann zu erfüllende Zweck ist die Sperrung des sonst über den betätigten Gabelumschalter verlaufenden Steuerkreises.In the case of rest, the handset on the handset corresponding to the switch position U »1 is present, flows through the resistor R and the diode D a far below the Functional limit for the central facility lying current, which, however, if with Pressing the flash key F short-circuit to the control path of the transistor arrangement is canceled, enables the full switching of the arrangement. The diode D is superfluous in itself for this process, its significance only appears when it is detached Handset, i.e. the hook switch position U2. The purpose then to be fulfilled is this Blocking of the control circuit that would otherwise run via the actuated hook switch.
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19742432452 DE2432452C2 (en) | 1974-07-06 | 1974-07-06 | Circuit arrangement for generating loop criteria of a defined length |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19742432452 DE2432452C2 (en) | 1974-07-06 | 1974-07-06 | Circuit arrangement for generating loop criteria of a defined length |
Publications (2)
Publication Number | Publication Date |
---|---|
DE2432452A1 true DE2432452A1 (en) | 1976-01-22 |
DE2432452C2 DE2432452C2 (en) | 1983-09-22 |
Family
ID=5919847
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19742432452 Expired DE2432452C2 (en) | 1974-07-06 | 1974-07-06 | Circuit arrangement for generating loop criteria of a defined length |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE2432452C2 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2633118A1 (en) * | 1976-07-23 | 1978-01-26 | Hagenuk Neufeldt Kuhnke Gmbh | CIRCUIT ARRANGEMENT FOR THE BRIEF INTERRUPTION OF TELEPHONE CONNECTIONS |
EP0004867A1 (en) * | 1978-04-15 | 1979-10-31 | Telefonbau und Normalzeit GmbH | Circuit arrangement for subscriber sets in private branch exchanges with tone pushbutton dialling |
US4198547A (en) * | 1978-09-26 | 1980-04-15 | Tele/Resources | Pulse circuit for two wire electronic PABX stations |
US4251693A (en) * | 1978-08-03 | 1981-02-17 | Christiansen Gary F | Fixed impulse generator for hook switch flash |
US4313037A (en) * | 1980-06-02 | 1982-01-26 | Rolm Corporation | Telephone station set with improved flash signalling |
US4614843A (en) * | 1983-11-14 | 1986-09-30 | U.S. Philips Corporation | Arrangement for opening the loop for a well-defined time interval from a telephone set |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2155916B2 (en) * | 1971-11-10 | 1978-07-20 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Temporary switch |
-
1974
- 1974-07-06 DE DE19742432452 patent/DE2432452C2/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2155916B2 (en) * | 1971-11-10 | 1978-07-20 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Temporary switch |
Non-Patent Citations (1)
Title |
---|
"Fernsprech-Nebenstellenanlage mit ESK", Siemens u. Halske AG, Best.Nr. 1-3240-002, S. 14/15 * |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2633118A1 (en) * | 1976-07-23 | 1978-01-26 | Hagenuk Neufeldt Kuhnke Gmbh | CIRCUIT ARRANGEMENT FOR THE BRIEF INTERRUPTION OF TELEPHONE CONNECTIONS |
EP0004867A1 (en) * | 1978-04-15 | 1979-10-31 | Telefonbau und Normalzeit GmbH | Circuit arrangement for subscriber sets in private branch exchanges with tone pushbutton dialling |
US4251693A (en) * | 1978-08-03 | 1981-02-17 | Christiansen Gary F | Fixed impulse generator for hook switch flash |
US4198547A (en) * | 1978-09-26 | 1980-04-15 | Tele/Resources | Pulse circuit for two wire electronic PABX stations |
US4313037A (en) * | 1980-06-02 | 1982-01-26 | Rolm Corporation | Telephone station set with improved flash signalling |
US4614843A (en) * | 1983-11-14 | 1986-09-30 | U.S. Philips Corporation | Arrangement for opening the loop for a well-defined time interval from a telephone set |
Also Published As
Publication number | Publication date |
---|---|
DE2432452C2 (en) | 1983-09-22 |
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