DE19603676A1 - Unauthorised intrusion into connection, detection device - Google Patents

Unauthorised intrusion into connection, detection device

Info

Publication number
DE19603676A1
DE19603676A1 DE1996103676 DE19603676A DE19603676A1 DE 19603676 A1 DE19603676 A1 DE 19603676A1 DE 1996103676 DE1996103676 DE 1996103676 DE 19603676 A DE19603676 A DE 19603676A DE 19603676 A1 DE19603676 A1 DE 19603676A1
Authority
DE
Germany
Prior art keywords
signal direction
see
discriminator
srd
dialling
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.)
Ceased
Application number
DE1996103676
Other languages
German (de)
Inventor
Hans-Juergen Neuhaus
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Deutsche Telephonwerke und Kabelindustrie AG
Original Assignee
Deutsche Telephonwerke und Kabelindustrie AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Deutsche Telephonwerke und Kabelindustrie AG filed Critical Deutsche Telephonwerke und Kabelindustrie AG
Priority to DE1996103676 priority Critical patent/DE19603676A1/en
Publication of DE19603676A1 publication Critical patent/DE19603676A1/en
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/66—Substation equipment, e.g. for use by subscribers with means for preventing unauthorised or fraudulent calling

Abstract

The signal routing discriminator (SRD) is connected between the communication network terminal (EE) and the transmission line transfer point of the network operator. The discriminator can be integrated in the security unit (SEE) and this in turn can be accommodated in the terminal. The evaluation of the signal route requires additional information in many cases, connected with the loop protocols and multi-frequency dialling. For this purpose there is a loop monitor (SU) and a dialling reception unit (WE) for recognition of different signalling (MFV,IMV). Preferably the exchange station (VST) can help for the call voltages and dialling tones.

Description

Die Erfindung betrifft Einrichtungen zum Erkennen von Fremdaufschaltungen auf analoge Teilnehmeranschlüsse in Telekommunikationsanlagen.The invention relates to devices for recognizing External connections to analog subscriber lines in Telecommunications equipment.

Zum Sichern von Nachrichten- und/oder Daten-Übertragungssystemen gegen unbefugte Eingriffe kann es erforderlich sein, den Ort der Nachrichtenquelle eindeutig zu identifizieren. Dies besonders im Fall des Nachrichten- und/oder Datenaustausches über leicht zugängliche Netze, wie beispielsweise ein drahtgebundenes Fernsprechnetz.To save messages and / or There can be data transmission systems against unauthorized interference be required to clearly identify the location of the news source identify. This is especially so in the case of news and / or Data exchange via easily accessible networks, such as for example a wired telephone network.

Ein spezieller Anwendungsfall ist das Sichern von Anschlußleitungen analoger Teilnehmeranschlüsse im Fernsprechnetz gegen unbefugte Nutzung durch Fremdaufschaltung.A special application is the backup of Connection lines of analog subscriber connections in Telephone network against unauthorized use by External connection.

Zum Sichern solcher Anschlußleitungen sind verschiedene Methoden bekannt, die den befugten vom unbefugten Teilnehmer (Fremdaufschalter unterscheiden, z . B. durch Eingabe einer persönlichen Identifikationsnummer oder die Übertragung von verschlüsselten Wahl- oder Zusatzinformationen usw. (DE 44 31 715, DE 195 10 697).To secure such connecting lines are Various methods are known, the authorized by the unauthorized Participants (distinguish third party switches, e.g. by Enter a personal identification number or the Transmission of encrypted dialing or additional information etc. (DE 44 31 715, DE 195 10 697).

Der Erfindung lag die Aufgabe zugrunde, die bekannten Sicherungsmaßnahmen zu erhöhen und die Quelle, z. B. eines Schleifenschlusses oder einer Wahlzeichengabe, eindeutig zu orten.The invention was based on the object, the known Increase safeguards and the source, e.g. B. one Loop closure or an election signal, clearly too locate.

Diese Aufgabe ist durch die Erfindung gelöst, wie sie im ersten Patentanspruch dargelegt ist. Weitere vorteilhafte Maßnahmen sind Gegenstand der Unteransprüche. This object is achieved by the invention, as in first claim is set out. More beneficial Measures are the subject of the subclaims.  

Die Erfindung wird nachfolgend anhand eines Blockschaltbildes näher erläutert.The invention is described below with the aid of a block diagram explained in more detail.

Zwischen einer Endeinrichtung EE eines Kommunikationsnetzes und dem Leitungsübergabepunkt vom Netzbetreiber wird ein Signalrichtungsdiskriminator SRD geschaltet. Der Signalrichtungsdiskriminator SRD ist beispielsweise in einer Sicherungseinrichtung SEE integriert. Diese Sicherungs­ einrichtung SEE kann ihrerseits auch innerhalb der Endeinrichtung EE angeordnet sein. Die Auswertung der Signalrichtung durch den Signalrichtungsdiskriminator SRD kann sämtliche Zusatzinformationen der Endeinrichtung EE betreffen. Unter den Zusatzinformationen sind sämtliche Informationen mit Ausnahme der Nutzinformationen, wie Sprache und Daten, zu verstehen, in der Regel der Schleifenschluß und die Impulswahl oder die Mehrfrequenzwahl. Zu diesem Zweck sind in der Sicherungseinrichtung SEE entsprechende Auswerter für die Schleifenüberwachung SU und den Wahlempfang WE vorgesehen. Der Auswerter für den Wahlempfang WE enthält Mittel zum Erkennen einer Zeichengabe mittels des Impulswahlverfahrens IMV sowie des Mehrfrequenzwahlverfahrens MFV.Between a terminal EE of a communication network and the line transfer point from the network operator becomes a Signal direction discriminator switched SRD. Of the Signal direction discriminator SRD is, for example, in one Safety device SEE integrated. This backup The SEE facility can also be located within the Terminal EE may be arranged. The evaluation of the Signal direction through the signal direction discriminator SRD can all additional information of the terminal EE concern. All information is included under the additional information Except for useful information such as voice and data understand, usually the loop closure and the pulse selection or multi-frequency dialing. For this purpose, in the Security device SEE corresponding evaluators for the Loop monitoring SU and the election reception WE provided. Of the Evaluator for the election reception WE contains means for recognition signaling using the pulse dialing method IMV and the multifrequency dialing method DTMF.

Bedarfsweise können auch die Zusatzinformationen der Vermittlungsstelle VST einbezogen werden: die Rufwechselspannung, die Hörtöne und die Informationen zu den Tarifeinheiten.If necessary, the additional information of the Switching center VST are involved: the Call AC voltage, the audible tones and the information on the Tariff units.

Sämtliche erfaßten Zusatzinformationen werden einer Auswerteinrichtung AWE in der Sicherungseinrichtung SEE zugeführt. Die Auswerteinrichtung AWE bewertet die Zusatzinformationen bezüglich der Signalrichtung. Das Erkennen einer unzulässigen Signalrichtung führt sodann zu einer dem jeweiligen Kommunikationssystem entsprechenden Reaktion, z. B. das Aktivieren einer Fangeinrichtung, das Umleiten der Fremdaufschaltung oder ggf. auch das Senden von Zusatzimpulsen, so daß eine Fremdaufschaltung im Bereich der Leitung LTG im Verbindungsaufbau gestört wird.All additional information recorded becomes one Evaluation device AWE in the safety device SEE fed. The evaluation device AWE evaluates the Additional information regarding the signal direction. The cognition An impermissible signal direction then leads to a  respective communication system corresponding reaction, e.g. B. activating a safety gear, redirecting the External activation or, if necessary, the sending of Additional pulses, so that an external connection in the area Line LTG is disturbed in the connection establishment.

Weiterhin kann die Sicherheit gegen Fremdaufschaltungen bei einem analogen Teilnehmeranschluß durch einen zusätzlichen Signalrichtungsdiskriminator SEV im Bereich der Vermittlungsstelle VST des Kommunikationssystems ergänzt werden.Furthermore, security against intrusion can be avoided an analog subscriber line by an additional Signal direction discriminator SEV in the area of Exchange VST of the communication system added will.

Claims (4)

1. Einrichtung zum Erkennen von Fremdaufschaltungen auf analoge Teilnehmeranschlüsse in Telekommunikationsanlagen, dadurch gekennzeichnet, daß am Leitungsübergabepunkt zur Endeinrichtung (EE) eine Sicherungseinrichtung (SEE) mit einem Signalrichtungsdiskriminator (SRD) zur Auswertung von Zusatzinformationen wie Schleifenschluß und Wahlkennzeichengabe in Abhängigkeit von der Signalrichtung geschaltet ist.1. A device for detecting external connections to analog subscriber lines in telecommunications systems, characterized in that at the line transfer point to the terminal device (EE) a security device (SEE) with a signal direction discriminator (SRD) for evaluating additional information such as loop closure and dialing is switched depending on the signal direction . 2. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Sicherungseinrichtung (SEE) Auswerter für einen Schleifenschluß (SU) und für einen Wahlempfang (WE) enthält, deren Informationen zusammen mit den Informationen des Signalrichtungsdiskriminators (SRD) einer Auswerteinrichtung (AWE) zugeführt werden, die eine dem jeweiligen Kommunikationssystem entsprechende Reaktion auslöst.2. Device according to claim 1, characterized in that the safety device (SEE) evaluator for one Loop closure (SU) and for an election reception (WE) contains whose information along with the information of the signal direction discriminator (SRD) one Evaluation device (AWE) are supplied, the one corresponding communication system response triggers. 3. Einrichtung nach Anspruch 2, dadurch gekennzeichnet, daß der Auswerter für den Wahlempfang (WE) Mittel zum Erkennen unterschiedlicher Zeichengabe (IMV, MFV) enthält.3. Device according to claim 2, characterized in that the evaluator for election reception (WE) means of recognition different signaling (IMV, MFV) contains. 4. Einrichtung nach Anspruch 1, dadurch gekennzeichnet, daß zum Erhöhen der Sicherheit gegen Fremdaufschaltungen einem analogen Teilnehmeranschluß zusätzlich zur Sicherungseinrichtung (SEE) der Endeinrichtung ein Signalrichtungsdiskriminator (SEV) in der Vermittlungsstelle (VST) des Kommunikationssystems zugeordnet wird.4. Device according to claim 1, characterized in that to increase security against intrusion analog subscriber line in addition to Securing device (SEE) of the terminal device Signal direction discriminator (SEV) in the Exchange (VST) of the communication system is assigned.
DE1996103676 1996-02-02 1996-02-02 Unauthorised intrusion into connection, detection device Ceased DE19603676A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1996103676 DE19603676A1 (en) 1996-02-02 1996-02-02 Unauthorised intrusion into connection, detection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1996103676 DE19603676A1 (en) 1996-02-02 1996-02-02 Unauthorised intrusion into connection, detection device

Publications (1)

Publication Number Publication Date
DE19603676A1 true DE19603676A1 (en) 1997-08-07

Family

ID=7784292

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1996103676 Ceased DE19603676A1 (en) 1996-02-02 1996-02-02 Unauthorised intrusion into connection, detection device

Country Status (1)

Country Link
DE (1) DE19603676A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19904959A1 (en) * 1999-02-06 2000-08-10 Deutsche Telekom Ag Method, system and device for recognizing illegal connection of a communication device

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9214765U1 (en) * 1992-10-30 1992-12-10 Wilhelm Rutenbeck Gmbh & Co, 5885 Schalksmuehle, De
DE9316584U1 (en) * 1993-10-29 1994-01-13 Rutenbeck Wilhelm Gmbh & Co Electrical locking device for telecommunication devices
DE4338175C1 (en) * 1993-11-09 1994-11-10 Swissphone Systems Gmbh Device for monitoring a telephone connection of an exchange line for external extraneous connections
DE4320812C1 (en) * 1993-06-23 1994-11-17 Swissphone Systems Gmbh Method and device for enabling verification of the billing statement
DE9417399U1 (en) * 1994-10-29 1995-03-09 Rutenbeck Wilhelm Gmbh & Co Circuit arrangement for line monitoring for analog telephone connections
DE29504383U1 (en) * 1995-03-15 1995-07-13 Bonnel Technologie Entwicklung Device for securing telecommunications connections
DE29508201U1 (en) * 1994-06-21 1995-07-13 Viehmann Matthias Dipl Ing Circuit arrangement for protection against external interference in a wired telephone network
DE4409452C1 (en) * 1994-03-18 1995-08-31 Swissphone Systems Gmbh Method and device for connecting a telephone with a telephone line monitoring device to a telephone connection box
DE19500850C1 (en) * 1995-01-13 1996-01-04 Vierling Werner Dipl Ing Securing telephone connection to exchange line against external disconnection

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9214765U1 (en) * 1992-10-30 1992-12-10 Wilhelm Rutenbeck Gmbh & Co, 5885 Schalksmuehle, De
DE4320812C1 (en) * 1993-06-23 1994-11-17 Swissphone Systems Gmbh Method and device for enabling verification of the billing statement
DE9316584U1 (en) * 1993-10-29 1994-01-13 Rutenbeck Wilhelm Gmbh & Co Electrical locking device for telecommunication devices
DE4338175C1 (en) * 1993-11-09 1994-11-10 Swissphone Systems Gmbh Device for monitoring a telephone connection of an exchange line for external extraneous connections
DE4409452C1 (en) * 1994-03-18 1995-08-31 Swissphone Systems Gmbh Method and device for connecting a telephone with a telephone line monitoring device to a telephone connection box
DE29508201U1 (en) * 1994-06-21 1995-07-13 Viehmann Matthias Dipl Ing Circuit arrangement for protection against external interference in a wired telephone network
DE9417399U1 (en) * 1994-10-29 1995-03-09 Rutenbeck Wilhelm Gmbh & Co Circuit arrangement for line monitoring for analog telephone connections
DE19500850C1 (en) * 1995-01-13 1996-01-04 Vierling Werner Dipl Ing Securing telephone connection to exchange line against external disconnection
DE29504383U1 (en) * 1995-03-15 1995-07-13 Bonnel Technologie Entwicklung Device for securing telecommunications connections

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19904959A1 (en) * 1999-02-06 2000-08-10 Deutsche Telekom Ag Method, system and device for recognizing illegal connection of a communication device

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Legal Events

Date Code Title Description
OM8 Search report available as to paragraph 43 lit. 1 sentence 1 patent law
8110 Request for examination paragraph 44
8131 Rejection