WO2007144385A1 - Procédé pour éviter des signalisations de requêtes de communication non souhaitées dans un réseau de communication - Google Patents

Procédé pour éviter des signalisations de requêtes de communication non souhaitées dans un réseau de communication Download PDF

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Publication number
WO2007144385A1
WO2007144385A1 PCT/EP2007/055849 EP2007055849W WO2007144385A1 WO 2007144385 A1 WO2007144385 A1 WO 2007144385A1 EP 2007055849 W EP2007055849 W EP 2007055849W WO 2007144385 A1 WO2007144385 A1 WO 2007144385A1
Authority
WO
WIPO (PCT)
Prior art keywords
kas
communication
request signaling
communication request
signaling
Prior art date
Application number
PCT/EP2007/055849
Other languages
German (de)
English (en)
Inventor
Martina Kauffmann
Klaus Lukas
Original Assignee
Nokia Siemens Networks Gmbh & Co. Kg
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 Nokia Siemens Networks Gmbh & Co. Kg filed Critical Nokia Siemens Networks Gmbh & Co. Kg
Priority to EP07730137A priority Critical patent/EP2036290A1/fr
Publication of WO2007144385A1 publication Critical patent/WO2007144385A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H04L65/1076—Screening of IP real time communications, e.g. spam over Internet telephony [SPIT]
    • H04L65/1079—Screening of IP real time communications, e.g. spam over Internet telephony [SPIT] of unsolicited session attempts, e.g. SPIT
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/02—Network architectures or network communication protocols for network security for separating internal from external traffic, e.g. firewalls
    • H04L63/0227—Filtering policies

Definitions

  • the present invention relates to a method and a network device for avoiding unwanted communication request signaling in a communication network, which makes it possible to transmit request signaling information in the case of a communication request from a first user to a second user.
  • the invention relates to avoiding the playback of unwanted ringtones that may be associated with advertising in telephone calls over modern telecommunications networks.
  • VoIP telephony extended usage ⁇ make features new kinds of SPIT attacks possible.
  • SIP Session Initiation Protocol
  • the destination subscribermountedsig- alisation such as a specific ringtone.
  • SPIT operators it is in principle possible for SPIT operators to use the request signaling or the ringtone to send unwanted contents, such as advertising or supposed prize notifications, to the called subscriber without a connection being established or the destination subscriber being able to prevent this.
  • This problem occurs not only in VoIP telephony, but in all communication networks that allow, in a communication request, the nature and form the communication request signaling at the destination subscriber, such as a ringtone, to be determined by the caller.
  • the SPIT caller breaks off shortly after the call is accepted by the destination subscriber or even before the call in order to place the SPIT message or advertising message at the receiver with only very low costs.
  • Multiple short calls of this type which transmit the SPIT message to the destination subscriber via the call or request signaling, generate a high level of interference with the corresponding user.
  • the communication network is charged by connection setup requests by the SPIT callers who operate ring tone SPIT, without the operator being able to bill actual connection setups .
  • a method for avoiding unwanted communication request signaling in a communication network which, in the case of a communication request from a first party to a second party, permits the transmission of request signaling information by which a communication request signaling is established at the second party.
  • the commu ⁇ nikationsanfragesignalmaschine before execution of the communication request signaling is reviewed for classification.
  • the communication network is preferably a telephone network, a mobile radio network which operates in particular according to a UMTS protocol and / or a VoIP network which operates in particular according to a SIP protocol.
  • a communication request signaling is checked and classified. Since ⁇ for example, a classification into “desirable” and “undesirable” conceivable, in which "undesirable” possible SPIT may include calls. By means of the classification, the review on SPIT is easily possible.
  • a link to a DA tei is a function of the request signaling information which, for example, in the communication system till ⁇ sets, and the communication request signaling stores retrieved.
  • the complete communication request signaling such as For example, transmit a file with ringtone signals, but only a link to the corresponding ringtone ⁇ file, which is provided in the communication network.
  • This can be, for example, on a server of the communication network, which provides special Lichtunikationsanfragesignali- sations for the participants of the communication network.
  • a respective link target such.
  • a server for communication request signaling classified as "trustworthy" or "undesirable”.
  • the classification of link destinations or servers for the signaling such as ringtones or other multimodal displays can thus be performed so that a called subscriber can reliably decide whether the communication request at least does not transmit a SPIT via the call signaling.
  • the request signaling information comprises a file with the communication request signalization. It is conceivable, for example, a transmission of the ringtone itself as a file that is transmitted to the called subscriber in a kommunikati ⁇ onsanfrage. For example, ring tones or videos which are played back at the called party for call signaling can be considered as communication signaling. It is also conceivable, however, the display of a text or a graphic, such as a photo of the calling party. Also combinations of such modalities are possible.
  • the communication request can be classified as a SPIT request and accordingly to be edited.
  • One way is to Blockie ⁇ tion of the call or the communication request signaling.
  • a recognition of the speech is performed in the checking of the communication request signaling.
  • a classification of the communication request signaling then takes place as a function of the recognized language. If an undesired advertising message is to take place via audio signaling in the form of communication request signaling, this is generally communicated linguistically. If the calling part ⁇ sent participants through the displayed via audio request signaling words or phrases in a foreign language who are ⁇ , this can be det verwen- as an indication of a SPIT call. For example it is unlikely that a participant in Europe, Japanese or Chinese pinach ⁇ addressed, especially with a ringing tone, received want.
  • a pattern or character recognition performed.
  • unwanted keywords are recognized. If a communication request to the requested subscriber is to be displayed by a visual signaling, this may also have unwanted (advertising) information.
  • the appropriate visual content are undesirable because, for example, advertising ⁇ text embassies or unfavorable images are transferred, the pattern or text recognition, a classification of the communication request as having been made "undesirable”.
  • the communication request is blocked, or the communication request signaling is replaced by standard request signaling.
  • the checking of the communication request signaling may preferably take place in an exchange, a server or a terminal of the communication network.
  • the invention further provides a network device for a communication network which, in the case of a communication request from a first subscriber to a second subscriber, allows the transmission of request signaling information defining a communication request signaling at the second subscriber.
  • the network device comprises a filter unit, a classification unit and a forwarding unit.
  • the filter unit selects the request signaling information from the corresponding communication request.
  • the classification unit verifies the request signaling information and / or the communication request signaling and classifies these into “desired” or "undesirable”.
  • the forwarding unit forwards the request signaling information and / or the communication request signaling if it has been classified as "desired”.
  • the network device is embodied as a switching centers Vermitt ⁇ device or a subscriber terminal in the communication network.
  • the invention further provides a computer program product which causes the implementation of a method according to the invention for avoiding unwanted communication call signaling in a communication network on a computer.
  • the corresponding computer program is special running as client software on a computer for participation in the communication network.
  • FIG. 1 shows a connection in a communication network ⁇ SEN using a variant of the inventive method ⁇ ;
  • FIG. 2 shows a flow chart of a further variant of the method according to the invention
  • FIG. 3 shows yet another variant of the method according to the invention in a communication network
  • FIG. 4 shows an embodiment of a network device according to the invention.
  • FIG. 1 shows schematically first a communications network 1 with a first user equipment 2 of a first user ("Alice") and a second user equipment 3 of a second user (“Bob").
  • the subscriber devices 2, 3 may for example be embedded in a communication network such as the Internet. It is a switching center device, such as a VoIP server 4, provided that a communication connection between see the two subscriber devices 2, 3 organized according to a communication protocol.
  • a server device 5 is provided, which uses the network 1 files with Communication request signaling KAS, such as files with ring tone data provides.
  • a requesting subscriber When using the SIP protocol for realizing a VoIP network a requesting subscriber transmits at ⁇ the first subscriber "Alice" play, from his subscriber device 2 of a communication request KA to an assigned switching center 4. Among other things, has a corresponding message to the communication request KA on a request signaling information ASI.
  • ASI request signaling information
  • Protocol results, for example, a following header:
  • INVITE sip bob@biloxi.com SIP / 2.0
  • a first step S1 the corresponding communication request KA is thus transmitted to the exchange 4 by the first subscriber "Alice” by the first subscriber device 2.
  • the exchange 4 requests from the server, which in the example explained here the Internet address http://www.example.com/sounds/, the Klin ⁇ gel file "ring.wav” (step S2) and in step S3 downloads the file.
  • the exchange 4 now checks the corresponding audio file "ring.wav", ie the Kirunikationsanfra ⁇ signaling KAS, for example by playing and an analysis of unwanted content. This can, for example, by a voice analysis on the done by the au ⁇ dio file "ring.wav” encoded audio material.
  • the exchange for example, in the event of be ⁇ voted keywords that point to advertising, the appropriate communication request signaling KAS classified as a ringtone SPIT, or if the audio content of the communication request signaling KAS REVIEW when Ü shows no disturbing content that Kommunikati ⁇ onsanfrage KA unchanged to the destination subscriber device 3 of the destination subscriber or the called subscriber, here Bob, forward (step S4).
  • the ringtone server 5 transmits in step S6, the ringing tone ⁇ file ring.wav as a communication request signaling KAS to the user equipment 3.
  • the subscriber device 3 now plays that call signaling for the corresponding user from. This can be done, for example, as shown by way of example in FIG. 1, via a loudspeaker 6, which makes the audio signal audible.
  • the call signaling can be done by other modalities, such as by the representation of a video on the screen 7 of the called party "Bob" or by displaying a text that indicates to the subscriber that a communication ⁇ request is happening or by display a picture.
  • Le ⁇ are diglich exemplified in Figure 1, the communication request signals as an audio file "ring.wav" Video File
  • the subscriber Bob chooses the second user equipment 3, the call or the telecommunication request anzuneh ⁇ men, is now the VoIP connection established between the first subscriber device 2 and the second user equipment 3 in the final step S7, so that the corresponding subscriber Alice and Bob communicate with each other.
  • this variant is carried out according to the method ⁇ modern fiction, at the central office 4 is an analysis of the communication request signaling KAS and a classification carried out the same. This has the
  • FIG. 2 shows a flow chart of a second variant of the method according to the invention for avoiding unauthorized Wanted communication request signaling.
  • the method may, for example, lung provide means by a suitable Vermitt ⁇ or also be performed in a subscriber terminal of the respective communication network.
  • step S100 a communication request KA is received.
  • step SlOl the request signaling information ASI is read or extracted from the communication request message.
  • the re- quest signaling information list for example, be ⁇ already checked indication signaling information and its classification as "desirable" in or "undesirable” contained ⁇ th.
  • certain ringtone servers that have provided in the past several times SPIT ringtones, in a so-called blacklist List classified.
  • ⁇ trusted ringtone server which in principle are also characterized by the request signaling information ASI can be classified into a white list.
  • step S103 If the request signaling information ASI is present in a corresponding request signaling information list, it is checked in step S103 whether theareasignalisie approximately ⁇ information by the corresponding list "desired” or "undesirable” representing communication requests. If the request signaling information ASI is for example included in a white list, in step S104, the underlying communication request message KA, as Judges of the sender of the Varunikationsnach- is derived Runaway ⁇ so desired, the corresponding Lichtunikationsanfragesig- alisation KAS at the destination subscriber is carried out.
  • step S109 If, however, decided in step S103 that the request signaling information ASI points to unwanted content, so in the black list is listed in step S109, the request signaling information ASI hereby is changed, so that for example tion request message in the appropriate communica ⁇ in the header of a link appears on a standard ringtone. Subsequently, in step SI10, this changed communication request message is forwarded.
  • the communication request is blocked at a as "unwanted” classified "re- quest signaling information and thereby fixed communication request signaling KAS SLIL in step, so that this does not reach the called subscriber to ⁇ .
  • step S105 the determined by the call signaling information ASI communication request signaling KAS is loaded.
  • the communication request signaling is analyzed in step S106.
  • ⁇ play at a ringtone audio file as communi ⁇ a voice analysis on the audio can be carried out content-cation request signaling and in the presence of indicative of SPIT words in the subsequent step S107, CLASSIFICA ⁇ tion take place in a "undesirable" ringtone.
  • step S107 It is also possible to determine a language of the audio content, and to classify the voice as "unlikely” for the caller as “unwanted” in step S107. Also an analysis of a Kom ⁇ munikationsanfragesignalmaschine KAS in the form of an analysis can be made of an image in an image file by pattern recognition the content ⁇ ses. May also be a question as Gayunikationsan- signaling used video to certain unwanted ⁇ wished images or content to be checked. If it is decided in step S107 that the communication request signaling analyzed and classified in step S106 is desired, the corresponding communication request ⁇ message KA is passed through in step S108.
  • step S107 if it is decided in step S107 that the communication request signaling has unwanted contents, as described above, the request signaling information ASI is changed in step S109, for example, into standard information, so that the subscriber equipment has standard signaling for the Communication request is played.
  • step S109 for example, into standard information, so that the subscriber equipment has standard signaling for the Communication request is played.
  • step S109 the request signaling information ASI is changed in step S109, for example, into standard information, so that the subscriber equipment has standard signaling for the Communication request is played.
  • step S109 for example, into standard information, so that the subscriber equipment has standard signaling for the Communication request is played.
  • step S109 for example, into standard information
  • FIG. 3 shows a further communication network 10 in which the method according to the invention for the
  • a first subscriber device 2 and a second subscriber device 3 are provided.
  • the subscriber devices 2, 3 can be connected to one another via a communication network, such as the Internet 11.
  • the Internet has a plurality of communication servers 4 as switching centers which are networked with one another via suitable communication links 12.
  • the communication request signal KAS for example a ring tone file, is also sent in the communication request message.
  • the first subscriber device 2 transmits a communication request message KA with the communication request signal KAS via the network 11 to the second destination subscriber device 3.
  • the signaling communication KAS which is in the Varunikationsanfra ⁇ genachricht KA transmitted, performs, is erfindungsge ⁇ Telss a check is performed to ask the Varunikationsan- signaling KAS to classify. This check can be done, for example, by playing and analyzing by voice or language analysis. If the Garunikationsan- ask signaling KAS as "desirable", so as not SPIT content comprehensive signaling is classified, will be played by the subscriber device 3 and Anson ⁇ th blocked.
  • FIG. 4 shows an exemplary embodiment of a network device that is particularly suitable for carrying out the method according to the invention.
  • the network device 13 for a corresponding communication network comprises a filter unit 14, a classification unit 15 and a forwarding unit 16. Further, the CLASSIFICA ⁇ is approximation unit coupled to a list 17th
  • the network device 13 receives a Garunikationsanfra ⁇ genachricht KA, which has a request signaling information ASI. This is tet reallywer from the filter unit 14 ⁇ by the request signaling information ASI is hiert extra- and tet to the classification unit 15 niegelei ⁇ .
  • the classification unit 15 now checks the request signaling information ASI, for example, by comparing whether the request signaling information ASI is present in a classification list or request signaling list 17. You have, for example, in a black list re- quest signaling information listed, which indicate SPIT content, and secondlystagesigna ⁇ may be ltechniks am in a white list that ensures no SPIT content have.
  • the classification unit determines that the request signaling information ASI indicates request signaling SPIT, the forwarding unit 16 replaces the request signaling information ASI by a standard request signaling ASI ⁇ and a correspondingly changed communication request message KA x is output.
  • a SPIT recognition takes place even before the call signaling at the destination subscriber, so that he is protected from, for example, ringtone SPIT.
  • the method allows the one hand, Klas ⁇ sification of the request signaling information or Kirunikationsanfrage- transmitted with the communication request signaling, see the potentially interfering advertising, Störge syndrome-, may have discriminatory content in "uner ⁇ wishes", and on the other hand, however, harmless tunes such as "Happy Birthday” which can be classified as desired contents and played unaltered in the establishment of a communication connection.

Abstract

La présente invention concerne un procédé pour éviter des signalisations de requêtes de communication non souhaitées (KAS) dans un réseau de communication (1, 10), qui permet, lors d'une requête de communication (KA) d'un premier abonné (2) à un second abonné (3), la transmission d'une information de signalisation de requête (ASI) qui détermine une signalisation de requête de communication (KAS) auprès du second abonné (3), la signalisation de requête de communication (KAS) étant vérifiée à des fins de classification avant l'exécution de la signalisation de requête de communication (KAS).
PCT/EP2007/055849 2006-06-16 2007-06-13 Procédé pour éviter des signalisations de requêtes de communication non souhaitées dans un réseau de communication WO2007144385A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07730137A EP2036290A1 (fr) 2006-06-16 2007-06-13 Procédé pour éviter des signalisations de requêtes de communication non souhaitées dans un réseau de communication

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006027825.9 2006-06-16
DE102006027825 2006-06-16

Publications (1)

Publication Number Publication Date
WO2007144385A1 true WO2007144385A1 (fr) 2007-12-21

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PCT/EP2007/055849 WO2007144385A1 (fr) 2006-06-16 2007-06-13 Procédé pour éviter des signalisations de requêtes de communication non souhaitées dans un réseau de communication

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EP (1) EP2036290A1 (fr)
WO (1) WO2007144385A1 (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050141486A1 (en) * 2003-12-24 2005-06-30 Rod Gilchrist Method and apparatus for controlling unsolicited messaging

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050141486A1 (en) * 2003-12-24 2005-06-30 Rod Gilchrist Method and apparatus for controlling unsolicited messaging

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
DANTU ET AL: "Detecting Spam in VoIP networks", SRUTI: STEPS TO REDUCING UNWANTED TRAFFIC ON THE INTERNET WORKSHOP, XX, XX, 7 July 2005 (2005-07-07), pages 31 - 37, XP002405070 *
DAWIRS UNIVERSITY OF NAMUR T FROMENT ALCATEL H TSCHOFENIG SIEMENS G: "Authorization Policies for Preventing SPIT", IETF STANDARD-WORKING-DRAFT, INTERNET ENGINEERING TASK FORCE, IETF, CH, 20 February 2006 (2006-02-20), XP015043449, ISSN: 0000-0004 *
MACINTOSH R ET AL: "Detection and mitigation of spam in IP telephony networks using signaling protocol analysis", ADVANCES IN WIRED AND WIRELESS COMMUNICATION, 2005 IEEE/SARNOFF SYMPOSIUM ON PRINCETON, NEW JERSEY, USA APRIL 18-19, 2005, PISCATAWAY, NJ, USA,IEEE, 18 April 2005 (2005-04-18), pages 49 - 52, XP010793744, ISBN: 0-7803-8854-2 *
ROSENBERG J ET AL: "The Session Initiation Protocol (SIP) and Spam draft-ietf-sipping-spam-02", INTERNET CITATION, 6 March 2006 (2006-03-06), XP002442168, Retrieved from the Internet <URL:http://tools.ietf.org.html/draft-ietf-sipping-spam> [retrieved on 20070706] *

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