DE1081062B - Method for the mutual transmission of surveillance signals between two telephone offices connected by longer lines - Google Patents
Method for the mutual transmission of surveillance signals between two telephone offices connected by longer linesInfo
- Publication number
- DE1081062B DE1081062B DES62211A DES0062211A DE1081062B DE 1081062 B DE1081062 B DE 1081062B DE S62211 A DES62211 A DE S62211A DE S0062211 A DES0062211 A DE S0062211A DE 1081062 B DE1081062 B DE 1081062B
- Authority
- DE
- Germany
- Prior art keywords
- frequency
- characters
- transmission
- frequencies
- longer lines
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/58—Arrangements providing connection between main exchange and sub-exchange or satellite
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- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Telephonic Communication Services (AREA)
Description
DEUTSCHESGERMAN
Zwischen zwei räumlich voneinander getrennten Ämtern, wie insbesondere elektronischen Voll- und Teilämtern, mit zentralisierter Steuerung ergibt sich die Notwendigkeit, wechselseitige Informationen auszutauschen, die weder vom Teilnehmer gesteuert noch für einen Teilnehmer bestimmt sind. Diese Meldungen vom Teilamt zum Vollamt einerseits und Befehle vom Vollamt zum Teilamt andererseits können z. B. zur Steuerung und Kontrolle von Koppelpunkten dienen.Between two spatially separated offices, such as in particular electronic full and Partial offices, with centralized control, there is a need to exchange mutual information, which are neither controlled by the participant nor intended for a participant. These messages from partial office to full office on the one hand and commands from full office to partial office on the other hand can be, for. B. to Control and control of crosspoints are used.
Da die Steuervorgänge in zentralgesteuerten Fern-Sprechsystemen sehr schnell erfolgen müssen, ist es wichtig, auch den Austausch der Überwachungszeichen möglichst schnell durchzuführen.Since the control processes in centrally controlled telephony systems have to take place very quickly, it is It is important to also replace the monitoring signs as quickly as possible.
Man kann für die Übertragung dieser Überwachungszeichen Gleichstromcode verwenden, dessen Elemente zeitlich nacheinander übertragen werden. Dies erfordert jedoch eine Synchronisierung. Außerdem ist ein solches Verfahren störanfällig gegenüber Fremdspannungen. Schließlich erfordert es viel Zeit. Verwendet man für jedes mögliche Element eines so Codes eigene Stromkreise, so wird der Materialaufwand groß.One can use direct current code for the transmission of these monitoring characters, its Elements are transferred one after the other. However, this requires synchronization. aside from that such a process is susceptible to interference from external voltages. After all, it takes a lot of time. If you use separate circuits for each possible element of such a code, the cost of materials increases great.
Die Verwendung eines Viel-Frequenz-Codes würde diese Nachteile weitgehend vermeiden; allein die Einschwingzeit der hochselektiven Empfangsfilter ist, weil die Tonfrequenzen verhältnismäßig nahe beieinander liegen, so groß, daß dieses Verfahren wegen der geringen Übertragungsgeschwindigkeit ausscheidet. Das gilt auch für durch tonfrequente Zeichen modulierte Trägerströme bei Mehrfachträgerfrequenzsystemen, die bei weit voneinander entfernten Ämtern häufig angewendet werden, weil der für die Übertragung der Überwachungszeichen in Frage kommende Frequenzabstand der Sprechkanäle zu klein ist.The use of a multi-frequency code would largely avoid these disadvantages; only the settling time of the highly selective receive filter is, because the audio frequencies are relatively close to each other, so large that this method is due to the low transmission speed is ruled out. This also applies to characters with audio frequencies modulated carrier currents in multi-carrier frequency systems with offices that are far apart are often used because the one in question for the transmission of the monitoring characters The frequency spacing of the speech channels is too small.
Die Erfindung steigert nun die Übertragungsgeschwindigkeit der wechselseitig auszutauschenden Informationen zwischen zwei Ämtern, zwischen denen Mehrfachträgerfrequenzsysteme eingesetzt sind, wesentlich dadurch, daß für den aus mehreren Frequenzen einer Frequenzvorratsgruppe gebildeten Code der Überwachungszeichen die einen großen Frequenzabstand aufweisenden Frequenzen der vorhandenen Trägerstromversorgung entnommen und auf einem von den Trägerf requenzsprechfcanälen getrennten Weg übertragen wind.The invention now increases the transmission speed of the information to be mutually exchanged between two offices between which multi-carrier frequency systems are used in that for the code formed from several frequencies of a frequency storage group of the monitoring signs the frequencies of the existing ones, which have a large frequency spacing Carrier power supply removed and on a separate path from the carrier frequency speech channels transmitted wind.
Da sehr weit auseinanderliegende Frequenzen zur Verfügung stehen, brauchen die Filter auf der Empfangsseite nicht besonders selektiv zu sein, so daß sie eine geringe Einschwingzeit haben.Since the frequencies available are very far apart, the filters on the receiving side are necessary not to be particularly selective so that they have a low settling time.
Gemäß einer weiteren Ausbildung der Erfindung erfolgt der Zeichenaustausch zwischen den beiden Ämtern in einem Zwanglauf verfahren, d.h., die Sendefrequenzen liegen an der Sendestelle so lange an dem übertragungsweg, bis der Code im Empfänger an der Verfahren zur wechselseitigenAccording to a further embodiment of the invention, the exchange of characters takes place between the two Use a compulsory operation, i.e. the transmission frequencies lie on the transmission path at the sending point until the code in the receiver is on the Procedure for mutual
übertragung von Überwachungszeichentransmission of monitoring characters
zwischen zwei durch längere Leitungenbetween two by longer lines
verbundenen Fernsprechämternassociated telephone exchanges
Anmelder:
Siemens & Halske Aktiengesellschaft,Applicant:
Siemens & Halske Aktiengesellschaft,
Berlin und München,
München 2, Witteisbacherplatz 2Berlin and Munich,
Munich 2, Witteisbacherplatz 2
Dipl.-Ing. Heinz Mertel, Hohenschäftlarn (Obb.),
ist als Erfinder genannt wordenDipl.-Ing. Heinz Mertel, Hohenschäftlarn (Obb.),
has been named as the inventor
Empfangsstelle ausgewertet ist und abhängig· von dem Ergebnis der Auswertung ein Signal nach rückwärts zur Sendestelle übertragen wird, welches dort den Frequenzcode abschaltet.Receiving point is evaluated and, depending on the result of the evaluation, a signal backwards is transmitted to the transmitting station, which switches off the frequency code there.
Die Erfindung sei an Hand eines Mehrfachträgerfrequenzsystems, z.B. eines Zwölf-Frequenzen-Trägersystems, erläutert. Die modulierten Trägerfrequenzen werden über die Leitung L zwischen dem Vollamt VA und dem Teilamt TA und umgekehrt übertragen. Die Trägerfrequenzen dieses Systems werden in der üblichen Weise durch Modulation der sogenannten Vorgruppenfrequenzen mit den Gruppenfrequenzen gewonnen. Zur Bildung z. B. eines (|)-Codes soll die höchste der Vorgruppenfrequenzen und die vier Gruppenfrequenzen verwendet werden. Angedeutet sind diese fünf Frequenzquellen durch Fl. . . F 5 im Teilamt und durch Fl'.. .F5' im Vollamt. Bei der Übertragung eines Codesteuerzeichens werden durch Schließen der Kontakte xt 1... xt5 in einer bestimmten Kombination (J) vom Sender ST des Teilamtes aus die Steuerzeichen über die Leitung B zum. Empfänger BV für die Trägerfrequenzen im Vollamt übertragen. In der Gegenrichtung überträgt der Sender SV die Codezeichen über die Leitung^ zum Empfänger ET des Teilamtes.The invention will be explained using a multiple carrier frequency system, for example a twelve-frequency carrier system. The modulated carrier frequencies are transmitted over the line L between the full office VA and the partial office TA and vice versa. The carrier frequencies of this system are obtained in the usual way by modulating the so-called pre-group frequencies with the group frequencies. For education z. B. a (|) code, the highest of the pre-group frequencies and the four group frequencies should be used. These five frequency sources are indicated by Fl. . . F 5 in partial office and through Fl '... F5' in full office. When a code control character is transmitted, the control characters are sent via line B to the sub-office from the transmitter ST of the sub-office by closing the contacts xt 1 ... xt5 in a certain combination (J). Receiver BV for the carrier frequencies transferred in full office. In the opposite direction, the transmitter SV transmits the code characters over the line ^ to the receiver ET of the sub-exchange.
Die niedrigste der Frequenzen, d. h. die Vorgruppenfrequenz, bestimmt das Arbeitstempo. Bei einer Vorgruppenfrequenz von 20 kHz ergibt sich eine Zeit von 50 με pro Schwingung. Um einen Schutz gegen Störungen zu erreichen, wenden zweckmäßig sechs Halbwelten zur Erkennung eines Zeichens herangezogen, d. h., die größte Auswertezeit beträgt dann 150 μβ, mit einem Sicherheitszuschlag von 50 μΞThe lowest of the frequencies, ie the pre-group frequency, determines the pace of work. A pre-group frequency of 20 kHz results in a time of 50 με per oscillation. In order to achieve protection against interference, it is advisable to use six half-worlds to recognize a character, ie the longest evaluation time is then 150 μβ, with a safety margin of 50 μΩ
009 508/86009 508/86
= 200 μβ. Nach dieser Zeit ist die Auswertung im Empfänger erfolgt. Dieser gibt ein Ergebnissignal nach rückwärts zum Sender und schaltet das noch anliegende Codezeichen ab.= 200 µβ. After this time, the evaluation is in Recipient takes place. This sends a result signal backwards to the transmitter and switches the one that is still present Code characters.
Durch die Form des Codes ist eine größtmögliche Sicherheit gegen Störungen durch Fremdspannungen gegeben, insbesondere auch weil der Pegel der für den Code verwendeten Trägerfrequenzen infolge des getrennten Übertragungsweges ohne Beeinträchtigung der Qualität der Sprechwege erhöht werden kann.The form of the code ensures the greatest possible security against interference from external voltages given, in particular because the level of the carrier frequencies used for the code as a result of the separate Transmission path can be increased without impairing the quality of the speech paths.
Claims (3)
Deutsche Patentschrift Nr. 936 879;
deutsche Auslegeschriften Nr. 1 010 579, 1 013 709, 769.Considered publications:
German Patent No. 936 879;
German Auslegeschriften Nos. 1 010 579, 1 013 709, 769.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES62211A DE1081062B (en) | 1959-03-19 | 1959-03-19 | Method for the mutual transmission of surveillance signals between two telephone offices connected by longer lines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES62211A DE1081062B (en) | 1959-03-19 | 1959-03-19 | Method for the mutual transmission of surveillance signals between two telephone offices connected by longer lines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1081062B true DE1081062B (en) | 1960-05-05 |
Family
ID=7495440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DES62211A Pending DE1081062B (en) | 1959-03-19 | 1959-03-19 | Method for the mutual transmission of surveillance signals between two telephone offices connected by longer lines |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE1081062B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1166288B (en) * | 1962-08-23 | 1964-03-26 | Standard Elektrik Lorenz Ag | Multi-frequency code signal method and circuit arrangement for its implementation |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE936879C (en) * | 1952-07-15 | 1955-12-22 | Heinrich Dipl-Ing Gerwig | Self-voting system |
| DE1010579B (en) * | 1955-10-03 | 1957-06-19 | Standard Elektrik Ag | Circuit arrangement for telecommunication systems for the transmission of switching orders, which are summarized from a number of individual partial orders |
| DE1013709B (en) * | 1955-10-04 | 1957-08-14 | Standard Elektrik Ag | Circuit arrangement for telecommunication systems for the transmission of switching orders, which are composed of a number of individual partial orders |
| DE1016769B (en) * | 1956-09-19 | 1957-10-03 | Standard Elektrik Ag | Circuit arrangement in a receiving device for signals according to the frequency code system |
-
1959
- 1959-03-19 DE DES62211A patent/DE1081062B/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE936879C (en) * | 1952-07-15 | 1955-12-22 | Heinrich Dipl-Ing Gerwig | Self-voting system |
| DE1010579B (en) * | 1955-10-03 | 1957-06-19 | Standard Elektrik Ag | Circuit arrangement for telecommunication systems for the transmission of switching orders, which are summarized from a number of individual partial orders |
| DE1013709B (en) * | 1955-10-04 | 1957-08-14 | Standard Elektrik Ag | Circuit arrangement for telecommunication systems for the transmission of switching orders, which are composed of a number of individual partial orders |
| DE1016769B (en) * | 1956-09-19 | 1957-10-03 | Standard Elektrik Ag | Circuit arrangement in a receiving device for signals according to the frequency code system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1166288B (en) * | 1962-08-23 | 1964-03-26 | Standard Elektrik Lorenz Ag | Multi-frequency code signal method and circuit arrangement for its implementation |
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