WO2007131899A1 - Method and device for the construction of a table of communication subscribers, method and device for the identification of at least one communication subscriber, and method for signaling that a communication connection for a called communication subscriber was unsolicited - Google Patents

Abstract

A method for the construction of a table (blacklist with trust rating) of communication subscribers, by means of which it is recorded that an unsolicited speech-communication connection, for at least one other communication subscriber, better known as SPIT (SPAM over IP telephony) or "unsolicited bulk communications" was requested. A message is received in which information is contained by means of which it is recorded that a communication connection between a calling communication subscriber and a called communication subscriber was unsolicited by the called communication subscriber, as well as a caller identification specification by means of which the calling communication subscriber is identified. The calling communication subscriber is entered non-specifically into a table with respect to the called communication subscriber or, if the calling communication subscriber is already entered into the table, a value which records the frequency of entries of the calling communication subscriber is increased or reduced.

Description

description

Method and apparatus for building a table with communication subscribers, method and apparatus for determining at least one communication subscriber, method for signaling that a communication connection was undesirable for a called communication subscriber, communication device and computer program elements

The invention relates to a method and a device for constructing a table with communication participants, a method and a device for determining at least one communication subscriber, a method for signaling that a communication connection for a caller communication subscriber was undesirable, a Kommunikati ^¬ onseinrichtung and computer program elements.

In modern communication systems, in which the accounting mode often, in other words by means of a so-called flat rate, is regulated by means of a flat fee, it is increasingly common that automated, computerge ^¬ assisted telephone calls for a large number of Kommunikati ^¬ onsteilnehmern be generated with which the called communication participants are bothered.

This problem is exacerbated with the advent of th so genann ^¬ Internet telephony, a voice communication ie using Internet protocols. In analogy to so-called SPAM emails, this annoyance of telephone communication network subscribers is also referred to as SPAM over IP telephony (SPIT). In other words, called SPIT un ^¬ unwanted calls to a Voice over IP-based communica ^¬ tion.

To reduce the problem of SPIT calls, it has hitherto been customary to use subscriber-specific lists, so-called blacklists, also referred to as blacklists, in which caller identification information, for example telephone numbers, is used. stored by such communication participants from whom the respective end user does not want to take a call.

The technical realization of such teilnehmerspezifi ^¬ rule blacklist can be done in one of the following ways:

a) The called subscriber (User) enters the Identifikati ^¬ on the caller (for example, his number) in his personal blacklist. This is usually done by means of a web interface. A disadvantage of the ^¬ ser approach can be seen in the high costs for the participants, as for example the medium "World Wide Web" is not beziehungswei- necessarily always available is se active. It is also problematic if the reputation ^¬ number of the caller after caller ie after the end of the communications link, no longer with the angeru ^¬ fenen communication stations (also be below ^¬ characterized as callee communication participants) comparable fügbar is, as it can be, for example, that in ei ^¬ nem communication terminal not call list for success ^¬ rich built and completed Kommunikationsver ^¬ compounds (successful calls) is performed. Furthermore, it is not possible, this procedure when supports calling number of the caller is not on the Angerufener-

Communication subscriber was, for example, ^¬ se in the case that the caller communication subscriber has suppressed the display of his phone number at the called party communication.

b) The communication service provider stores the new blacklist entry in a database. This possible approach has, for example, the following disadvantages. Usually, the amount of participants ^¬ specific blacklists is very limited, for example to 32 entries per participant, as the volume of data otherwise too large for all participants (for example, 100,000) becomes. In a rare occurrence of SPIT callers there is also the risk that the participants hardly maintains its blacklist entries, they that remain indefinitely in the user-specific blacklist, in other words, there is no "Old ^¬ tion" of the data stored in the black list data. this is problematic if numbers are reassigned after a certain time. in addition, would be said called communication subscribers forced in this approach to increased incidence of SPIT callers, its user-specific blacklist gen continuously pfle ^¬. There is in this case the risk that he gives up this care for administrative reasons.

c) Since the individual blacklists exist as subscriber-specific blacklists, the communications service provider must perform an algorithmic combination of all blacklists in order to be able to effectively achieve general protection for all communication users. This procedure has, for example, the after ^¬ part, that the evaluation of the plurality of subscriber-specific blacklists by the communication service provider for reasons of expense (in other words, due to the considerable amount of computation time that would be required to carry out this procedure) only possible or provided at certain intervals is. For this reason, a timely SPIT defense is only bad in this manner, if at all, to be granted th quietest ^¬.

The following document was published for SPIT treatment:

S. Niccolini et al, Requirements and Methods for SPIT identi fication ^¬ Using feedback in SIP, SIPPING Working Group, inter- net-draft, draft-Niccolini-sipping-feedback-spit-00, Feb ^¬ ruary 2006, describes a method, where a subscriber receiving a SPIT call reports to the SPIT identification system. According to this document It is described that this report is done using SIP messages, for example using a Session Initiation Protocol NOTIFY (SIP NOTIFY) message or by means of additional information which refers to the receipt of a SPIT call, this information ^¬ mation is inserted in a header field of a SIP-BYE message.

The invention is based on the problem to determine information about callers of unwanted voice communication connections in a simple manner or to provide the necessary data in a simple and cost-effective manner.

The problem is nalisieren by a method and an apparatus for establishing a table of communication stations, by a method and an apparatus for determining at least one communication subscriber, by a method for Sig ^¬ that a communication connection for a check-Called-communications subscriber was undesirable by a communication device as well as by corresponding computer program elements with the features according to the independent claims solved.

Has been specified in a method for computer-aided constructing a table of communication participants over which they have requested at least one communication links for at least one subscriber whose communication to unwanted ^¬ voice, a demand is received Judges, in which is contained:

Information is indicated by means of which a communication connection between a caller communication subscriber and a caller communication subscriber was undesirable for the caller communication subscriber,

A caller identification information by means of which the caller communication subscriber is identified. The caller communication subscriber is nonspecifically entered in a table with regard to the called communication subscriber or, if the caller

Identification participant is already entered in the table, is a value with which the frequency of naming the

Caller communication subscriber is increased, increased or decreased.

Has been onsteilnehmern a device for establishing a table of communications, indicated by means of which they have requested at least one ^¬ subscriber undesirable for at least one other communication voice communication link, comprises a receiver for receiving a message in which is contained: • an information indicating that a communication link between a caller communication subscriber and a caller communication subscriber was undesirable to the caller communication subscriber, a caller identification information by means of which the

Caller communication subscriber is identified. Furthermore, a table management unit is provided which is set up such that they the Angerufener- communication subscriber transmits the caller communication subscriber with respect to non-specifically in a table ^¬ or, if the caller communication subscriber is already registered in the table, a value with which Frequently, the ^¬ stiffness of the entry of the caller communication node on ^¬ is added, increased or decreased.

According to another exemplary embodiment of the invention, a method is provided for the computer-aided determination of at least one communication subscriber, who is assumed to have at least one voice user undesirable for at least one other communication user.

Communication connection has requested. For at least ei ^¬ caller nen in a table in which communication participants, wherein a communication link between an on ration communication subscriber and a called communication user who was undesirable for the called party, were unspecific entered with regard to the called party, registered communication participant is checked whether this meets a predefinable criterion. In the event that the registered communication participant satisfies the predetermined criterion, the communication participant is accepted as a communication participant who has requested at least one for at least one other communication participants unwanted voice-communication connection.

According to another embodiment of the invention, an apparatus is provided of a communication participant for determining at least, it is assumed for that he has requested at least one undesirable for at least one other communication part ^¬ participants voice communication link. The device comprises according to this Ausführungsbei ^¬ game of the invention, a test unit, which is set up were to test for at least one in a table in which communication participants, the caller at a communication connection between a caller communication subscriber and a called party communication participants who for the Called-communication subscriber was unwanted, unspecific registered with regard to the called-communication subscriber, registered communication participants, whether this meets a predetermined criterion. Further, there is provided a detection unit which is adapted art of ^¬ that it in the event that the recessed transmitted communication participant satisfies the predetermined criterion, determines the communication participant as a communication part ^¬ participants, the at least one undesirable for at least one other communication participant voice communication link has requested.

For example, by the called party unspecific storage of a caller identification information and an associated information that the associated caller as a Caller was in an undesirable for each called party communication connection is a very simple and centralized data storage and data analysis, such as statistical data analysis, allows. This is also a very simple determination of communication participants, which were often referred to as a caller for each called party undesirable communication connection, allows. It is no longer necessary, for example, to guide called subscriber-specific tables, for example subscriber-specific blacklists, and to evaluate them separately or in a very complex manner. This central data storage in only one central table also allows a very fast response to a changing communication environment or communication situation, ie, for example, a very fast response to short-term new callers, which in a short time interval ^¬ very often as a caller of an undesirable communication link to be named.

According to another embodiment of the invention, a method is provided for signaling that a communication connection was undesirable to a called-up communication subscriber, wherein a code is input from the called-up communication subscriber into a communication device by means of which the recipient can

Message is indicated that a communication link between a caller communication subscriber and the called communication subscriber for the caller communication subscriber was undesirable. According to this method, a message is generated which contains the code as well as a caller identification information by means of which the caller communication subscriber is identified. The message is sent to an evaluation unit.

A communication device has an input unit for inputting a code by means of which the recipient of the message is informed that a communication connection between a caller communication subscriber and the device is present. The caller communication subscriber was undesirable for the caller communication subscriber. Furthermore, a message generating unit is provided for generating a message which contains the code as well as a caller identification information by means of which the caller communication subscriber is identified. Furthermore, a transmitter is provided for sending the message to an evaluation unit.

The evaluation can be performed using this code, wel ^¬ they chen, for example, from the received message ermit ^¬ telt, realize that to be given with the message that it has acted in this communication link to an undesirable for the callee communication participant communication link and can Thus, determine the caller identification information also contained in the message and store in, for example, a table described above or otherwise processed.

With this approach, it is not necessary, the Com ^¬ munikationsgeräte itself to change as, for example, according to the publication S. Niccolini described above at al, Requirements and Methods for Identification Using SPIT feed- back in SIP, would be required.

Further, computer program elements are provided, the same have the above-beschrie ^¬ surrounded method steps when executed by a computer.

It should be noted that the invention in software that is, by means of one or a plurality accordingly turned ^¬ oriented computer programs, implemented in hardware, ie by means of one or more corresponding equipped specifically of electronic circuits, or in any hybrid form, that is, in any part in Hardware or software, can be implemented. Exemplary embodiments of the invention will become apparent from the dependent claims.

The embodiments described below relate, as far as appropriate, to both the method and the device for constructing a table with communication participants, the method and the device for determining at least one communication subscriber, the method for signaling that a communication connection for a caller communication subscriber undesirable was, the communication ^¬ device and the computer program ^elements .

The message can be received as a message sent by the at least one other communication user. In other words, according to this embodiment of the invention, the respective other communication user has generated the message, and at the receiver, which se beispielswei ^¬ a central evaluation unit of the communication service provider is transmitted.

The message is in accordance with an embodiment of the dung OF INVENTION ^¬ according to a Kommunikationsverbindungs-

For example, both the respective protocol steps and the message format according to this communication connection

Control protocol are designed. The session initiation protocol (SIP) can be used as the communication connection control protocol.

In this way, a very simple mechanism is to STEU ^¬ ren a communication link used for transmitting the information that a communication link for the called subscriber was undesirable to a central unit, for example of the communication service provider, as an alternative to a separate communication service provider external unit which is intended for monitoring and managing unwanted communication links. According to one aspect of the invention there is provided, according to the SIP SUBSCRIBE provided / NOTIFY mechanism, a ^¬ enforce such that the message is a Session Initiation Protocol NOTIFY message which is transmitted to the respective receiver, wherein the receiver of the message previously enrolled (subscribed) to this communication service has SUBSCRIBE message by means of a Session Initiation Protocol. (This is written in Fig.l with message 108 be ^¬)

The information can be in the message itself, advertising alternative but also in an additional message field, for example in an additional message field of a SIP BYE message, for example in the header field, made, in which additional message box Informati ^¬ on is to contain, means indicated that a communi ^¬ nikationsverbindung between a caller communication subscriber and a Angerufener- communication subscriber for the communication subscriber Angerufener- was undesirable.

In an alternative embodiment of the invention, it is provided that a code which is entered into the communication device of the called-up communication subscriber is transmitted in the message, by means of which the recipient of the message is informed that a communication connection exists between a caller communication subscriber and a caller. Communication participant for the caller communication participant was undesirable.

In this way, a very simple signaling of this information to the receiver is made possible without it being necessary to change the respective transmission protocol or even the communication device of the called party communication subscriber. It is only he ^¬ conducive to provide a corresponding evaluation unit in which Emp ^¬ catcher of the message, which is set up to recognize the respective code, and to derive from the fact that this Message referenced an unsolicited for the called communication ^¬ onsverbindung.

According to another embodiment of the invention, it is provided that messages are received by different communication users, wherein in each such message information is included by means of which angege ^¬ ben is that a communication connection between a caller communication subscriber and a caller Communication participant for the caller

Communication subscriber was undesirable and a caller identification information by means of which the caller communication subscriber is identified. In this way, a very simple centralized management of infor- enables mation with respect to a variety of each called communication subscribers unwanted communication links, making a very reliable, kos ^¬-effective and easy monitoring of callers respects ^¬ Lich of applying undesirable for the called party communication links allows ,

According to one embodiment of the invention, it is provided to use at least one additional criterion in order to determine whether the communication user is a communication user who has requested at least one voice communication connection that is undesirable for at least one other communication user.

At least one of the following additional criteria can be used for this:

• duration of one or more communication connections in which a respective communication subscriber was the caller communication subscriber,

Information about the behavior of the communication participant as caller communication participant,

Information about the behavior of the caller communication subscriber to one or more communication service providers. Clearly, can thus be used as an additional criterion characteristics of each built up and as uner ^¬ wishes declared communication link or in general the behavior of the caller communication subscriber, game, in ^¬ the frequency of established communication links, or the times at which the communication connections are established for the most part, the Frequency and the number of simultaneously established communication connections, etc.

Furthermore, information can also be used as to how the caller communication subscriber behaves towards the communication service provider, for example, his payment habits, the frequency of changing his residential ^¬ seat, etc.

From these criteria an improved estimate of the respective communication subscriber can be made as to whether it is a "normal" communication stations or build munication to a communication subscriber associated with increased likelihood of adverse for a called party communi ^¬.

As a voice communication connection, a packet-switched voice communication connection can be used, but alternatively also a circuit-switched voice communication connection.

The invention can, for example, in each Kommunikationssys ^¬ system advantageously be used, wherein constructing a large number of communication links for the caller does not cause substantial increase in cost, which is the case at ^¬ play, in a communication system or at a billing mode in which a flat-rate for ei ^¬ nen given period for any number of communication links a given fee charged is billed or billed, ^{beispielswei ¬} se according to a so-called flat rate.

Thus, the invention is particularly suitable for use in voice communication links, which are Internet-based, since a flatrate is very common in such a form of Internet-based voice communication. Thus, a Voice over Internet Protocol voice communication connection (Voice over IP, VoIP) can be used as the voice communication connection.

In one embodiment of the method for signaling that a communication connection was undesirable for a caller communication subscriber, it is provided that the message is sent by means of a telecommunications network to an evaluation unit.

Embodiments of the invention are in the figures Darge ^¬ provides and are explained in more detail below.

Show it

FIG. 1 shows a first message flow diagram which contains the

Message exchange according to a first embodiment of the invention represents;

FIG. 2 shows a second message ^flow diagram in which the message ^flow according to a second embodiment of the invention is shown;

FIG. 3 is a flow chart illustrating a method for establishing and managing a SIP table according to an embodiment of the invention;

FIG. 4 shows a flow chart in which the method steps for determining a spitter subscriber according to an ^exemplary embodiment of the invention are shown. In the figures, where appropriate, identical reference ^symbols are used for identical or similar elements or method ^steps .

As shown in a first message flow diagram 100 (see Fig. 1), a communication system comprises a first communication device 101, for example a first communication terminal, a second communication device 102, for example a second communication terminal, and a communication service. Provider computer 103.

The communication service provider computer 103 may be a computer or may contain a plurality of computers as well as one or more database tables or also one or more databases. Likewise, it can be computers of several communication service providers.

The communication service provider computer 103 is set up to provide one or more communication links between any number of communication participants, in other words between any number of communication devices 101, 102.

The first communication device 101 and the second communication device 102 are each by means of a sponding entspre ^¬ partial communication with the communication service provider computer 103 are connected. The first communication device 101 and the second communication device 102 can be any communication terminal, for example a landline telephone, a mobile telephone, a personal digital assistant (PDA) with a corresponding communication device, a notebook, a laptop or a staff Computer or other type of computer in which a corresponding communication device is included.

The communication devices 101, 102 are according to this embodiment of the invention for communication according to a Voice over Internet Protocol (Voice over IP, VoIP) - communication standard and have thus each implemented a corresponding Internet protocol stack including a unit for providing the Internet Protocol (IP) and the Transport Control Protocol (TCP) and / or user Datagram Protocols (UDP) and other desired communication protocols in other communication ^¬ layers.

It should be noted that in alternative execution of the invention ^¬ form any other communications network or any other suitable ^¬ Kommunikati ^¬ onsstandards can be used for communication between the communication devices 101, 102 as well as the com- munikationsdienst provider computer 103rd

Thus, the invention is not limited to a particular Kommunikati ^¬ onsprotokoll or a predetermined transmission technology, however, is particularly suitable for use in the field of Internet-based voice communications. The communication devices 101, 102 may be coupled to the communication service provider computer 103 by means of fixed network communication links or mobile communication links.

Fig.l shows the message exchange between the communication devices 101, 102 and the communication service provider computer 103 according to a first embodiment of the invention in a first message flow diagram 100th

According to the first embodiment of the invention, a first SIP REGISTER message 104 is generated by the first communication device 101 for VoIP registration and transmitted to the communication service provider computer 103. Upon receiving the first SIP REGISTER message 104, the communication service provider computer 103 generates a first SIP 200 OK message 105 and transmits it as a Bes ^¬ actuation of the registration of the first Kommunikationsseinrich- processing 101 for the VoIP communication service to the first com ^¬ munikationseinrichtung one hundred and first

Further, the second communication device 102 generates a second SIP REGISTER message 106 and transmits this newly ^¬ if ^¬ Center to the communications service provider computer 103 to regist at this for the communication service VoIP.

Upon receipt of the second SIP REGISTER message 106 he witnesses ^¬ the communication service provider computer 103 a second SIP 200 OK message 107 and transmits it to the second communication device 102 to this also the registration for the respective communication service According to this embodiment of the invention for the communi ^¬ nikationsdienst VoIP to confirm.

Further, the communication service provider computer 103 generates a SIP SUBSCRIBE SPIT message 108, and also transmits it to the second communication device 102. The SIP SUBSCRIBE SPIT message 108 subscribes to the commu ^¬ nikationsdienst provider computer 103 with him the second communication device 102 for the communication service of the SPIT voting (in other words, for the communication service SPIT tuning), in other words, for the communication service that the second Kommunikationseinrich ^¬ device 102 on receiving an unwanted call out the calling communication participants as SPIT communication subscriber (SPAM over IP Telephony) can identify and this information, as will be described in more detail below, according to the SUBSCRIBE NOTIFY mechanism according to SIP to the communication service provider computer 103 can transmit.

Upon receipt of the SIP SUBSCRIBE message 108 SPIT acti ^¬ the second communication device 102 according to fourth the necessary functions, for example, a key of the second communication means 102 of the Tuning functionality as part of the SPIT voting and generates a third SIP 200 OK message 109 with which the subscribing to the communication service SPIT voting bestä ^¬ is Untitled and sends it to the communication service provider computer 103rd

In the following, it is assumed without restriction of generality that now the first communication device 101 wants to set up a voice communication connection with the second communication device 102 or with its user. To achieve this, generates the first Kom ^¬ munikationsnachricht 101 a first SIP INVITE message 110 and sends it to the communication service provider computer 103, which 110 is a second to receiving the first SIP INVITE message SIP INVITE Message 111 is generated and transmitted to the second communication device 102 to invite the second communication device 102 to the requested voice-communication connection with the first communication device 101.

It should be noted that the descriptions here case is a ^so-¬-called proxy process in which the complete Signalsierungskommunikation via the communication service provider computer 103 runs out.

In an alternative embodiment of the invention, a so-called redirect method is provided in which the communication service provider computer 103 is used only for the registration and the address resolution. The signaling setup for communication relations would then run directly between the two communication partners. But the general procedure for the SPIT Notification would not change.

If the user of the second communication device 102 wants to receive or accept the invitation to the voice communication connection, in other words, the second communication device 102 generates a call corresponding input on the part of the user towards a fourth SIP 200 OK message 112 and sends it to the Kommunikati ^¬ onsdienst provider computer 103. This generates on receiving the fourth SIP 200 OK message 112, a fifth SIP 200 OK message 113 and transmits this to the first Kom ^¬ munikationseinrichtung 101, whereby after receiving the fifth SIP 200 OK message 113 a voice communication connection between the first communication device 101 and the second communication device 102 by means of the Kommunikationsdienst provider -Rechners is constructed 103 and durchgeschal tet ^¬.

According to this embodiment of the invention, the speech data is for transmission over ^¬ the Real Time Transport Protocol (RTP) is used. In other words, this means that in the switched-through voice communication link now an exchange of media data, such as voice data is possible (shown in Fig.l by means of a block 114).

After the communication connection has been established, it is assumed according to this exemplary embodiment of the invention that a SPIT voice file is played by the first communication device 101 and the corresponding voice data is transmitted to the second communication device 102.

Upon receipt of this voice data, the user of the second communication device 102 recognizes that the call is not a standard telephone call with a natural person as a communication partner, but that it is an unwanted, usually automated, SPIT telephone call. It should be noted that the unwanted call can also come from a natural person. Subsequently, the user of the second communication device 102, also referred to below as client B, evaluates the established communication connection as one SPIT communication link and generates a corresponding SPIT notification message (step 115).

This is done using the SUBSCRIBE NOTIFY mechanism provided by SIP.

It is thus a first SIP NOTIFY message 116 SPIT he witnesses ^¬ and transmitted to the communication service provider computer 103, which on the reception of said first SIP NOTIFY message SPIT 116 toward a sixth SIP 200 OK Message 117 generated and transmitted to confirm the receipt of the first SIP-NOTIFY-SPIT message 116 to the second Kommunikationsein ^¬ direction 102.

In the first SIP NOTIFY SPIT message 116 is both a

Communication session identification information with which the respective communication connection or communica ^¬ tion session is identified included, as well as an indication that it is a SPIT communication link is at the first SIP NOTIFY SPIT message 116 and the identification data, by means of which allows is to identify the An ^¬ rufer the communication link, ie according to this embodiment of the invention, the first communication device 101. The identification can be used in addition to the communication session

Identification in the first SIP NOTIFY SPIT message 116 may be included. Alternatively, however, the communication service provider computer 103 can use the communication session identification information as the caller identification information by using the communication session identification information (session ID) of the associated caller, which in the communication service provider computer 103 has been stored in the context of the structure of the communication connection is determined.

Thus, due to the receipt of the first SIP NOTIFY SPIT message 116, the communication service provider computer 103 may now be the calling client A, in other words the first Communication device 101, assign a SPIT value, which first communication device 101 with the client B, ie the second communication device 102, has established a SPIT communication connection (in Fig.l symbolized by means of a block 118).

According to this exemplary embodiment of the invention, the notification of the communication service provider computer 103 thus takes place while the communication connection between the first communication device 101 and the second communication device 102 is established.

The possible process steps are performed in the communications ^¬ service provider computer 103 will be explained below with reference to Figure 3.

It is further assumed that, according to this exemplary embodiment, the user of the second communication device 102 then wishes to abort the communication connection and, in ^response to an appropriate input by the user, the second communication device 102 generates a first SIP BYE message 119 and sends it to the communication ^¬ service provider computer 103, which generates to receiving the first SIP BYE message 119 towards a second SIP BYE message 120 and this is sent to the first communication device the one hundred and first

After receiving the second SIP BYE message 120, the first communication device 101 generates a seventh SIP 200 OK message 121 and transmits it to the communication service provider ^¬ computer 103 to inform this about the successful removal of the communication link. Upon receipt of the seventh SIP 200 OK message 121 towards the communication service provider computer 103 generates an eighth SIP-200 OK message 122 and transmits this cation device to the second communica ^¬ 102 in order of the successful reduction To inform communication link. Now the communication connection is broken down.

2 shows in a second message flow diagram 200 the message flow for a SPIT voting according to a second embodiment of the invention.

Since the method steps for establishing the communication connection and the thus enabled exchange of media data using RTP (block 114) are identical to the method according to the first embodiment of the invention, as illustrated in FIG. 1 and explained above, reference is made to FIG Repeated description of these steps ^¬ omitted.

However, according to this exemplary embodiment of the invention, it is assumed that prior to the issuing of the SPIT voting by the user of the second communication device 102, the communication connection on the part of the second communication device 102 has already been reduced, in other words, the SPIT voting takes place according to this embodiment of the Er ^¬ finding after completing the voice communication connection.

It should be noted that it can be provided according to an alternative embodiment of the invention is that the SPIT voting or connection before construction before accepting a requested or required communication ^¬ by the second communication device 102 can be carried out and possibly it does not become a Establishment of the communication connection comes when the user of the second communication device already recognizes when requesting the communication connection that the caller communication subscriber is a SPIT caller. In another alternative, however, it is also provided to establish the communication connection after the successful SPIT voting, to listen to the corresponding message and then terminate the communication connection again. According to this exemplary embodiment of the invention, it is thus provided to generate a third SIP BYE message 201 for ending the communication connection by the second communication device 102 and to transmit this to the communication service provider computer 103. The communication service provider computer 103 generates the receipt of the third SIP BYE message 201 towards a fourth SIP BYE message 202 and transmits it to the first Kommunikati ^¬ onseinrichtung 101 of the communication link to degrade.

Obtaining the fourth SIP BYE message 202 confirms the first communication device 101 by generating and ninth SIP OK message 203 which will transmit to the communication ^¬ service provider computer 103, which on the recom- this message catch towards generates a tenth SIP OK message 204 and transmits it to the second communication device 102.

After terminating the communication connection with the first communication device 101, the user of the second communication device 102 recognizes and evaluates the terminated call or the terminated voice message.

Communication link with the first communication device 101 as a communication link SPIT and trans- mits an appropriate notification to the SPIT Kommunikati ^¬ onsdienst provider computer 103 (step 205). This is done according to this embodiment of the invention by the second communication device 102 to a corresponding input by the user of the second communication device 102 toward, for example by a corresponding

Pressing the button of the user of the second communication device 102 generates a second SIP NOTIFY-SPIT message 206 and transmits it to the communication service provider computer 103. The key can be implemented as a mechanical key or as a selectable key of a graphical user interface of a computer, ie implemented in software. The communication service provider computer 103 acknowledges receipt of the second SIP NOTIFY SPIT message 206 these, the second communication device 102 by transmitting the communication service provider computer 103, an eleventh SIP-200 OK message 207 and generates this onseinrichtung to the second Kommunikati ^¬ 102nd

Due to the receipt of the second SIP NOTIFY-SPIT message 206, which has the same structure as that described according to the first embodiment, the communication ^¬ service provider computer 103 can now a SPIT value to the calling client A, ie the first communication device

101, which establishes a voice communication connection with the client B, i. with the second communication device

102, has built.

According to both methods described above, it should be noted that a SIP already provided according mechanism is used, namely the SUBSCRIBE NOTIFY mechanism, and therefore a change of the communication protocol in the ^¬ sem case is not required.

In an alternative embodiment of the invention, provision may be made for the corresponding information in the context of the SPIT voting, ie the information that the user of the second communication device 102 evaluates the voice communication connection as SPIT communication connection, in another message or by means of another ^¬ ren protocol to the communication service provider computer 103 to submit. This can be done, for example, in the header field of a SIP BYE message.

It should also be pointed out that the execution of the evaluation and the table management of SPIT communication subscribers described below does not necessarily have to be performed by the communication service provider, but can also be provided by another trustworthy entity, in which case the communication not necessarily with the communication onsdienst provider computer 103, but would be performed with a correspondingly entitled computer.

Alternatively, for example, the information may be provided using the Binary Floor Control Protocol (BFCP), the Media Gateway Control Protocol (MGCP), or the Skype Protocol.

In the following, a method for managing a table is described in a first flowchart 300 in FIG. 3, in which the communication users are entered, which designate communication users of one or more called communication participants (also referred to as called communication users) as SPIT communication participants were.

The method is performed according to these embodiments of the invention in the communication service provider computer 103.

After starting the process (step 301), it is continuously checked whether a message has been received (step 302).

If this is not the case ("No" in step 302), the test step 302 is carried out repeatedly at regular time intervals, for example within a few milliseconds.

Once a message has been received ("Yes" in step 302), it is checked whether the received message is a SPIT reconciliation message, such as a SIP NOTIFY SPIT message 116, 206 (check step 303) ).

If this is not the case ("No" in test step 303), the method is continued in test step 302 and it is checked whether another message has been received. Administration, as described in this context, discarded.

If, however, the received message is a SPIT voting message, for example a SIP NOTIFY-SPIT message 116, 206 ("Yes" in test step 303), the caller identification information is determined from the received message, ie, for example, the telephone number of the caller Caller communication subscriber (step 304).

In a subsequent test step is to check whether the caller ID to ^¬ in a previously initialized SPIT table is already included (test step 305).

If this is not the case ("No" in test step 305), a table record is created for the caller with the corresponding caller identification information, ie for the caller with the telephone number specified in the SPIT message (step 306) and it For example, a frequency value for the caller communication subscriber is set to a predetermined initialization value (step 307).

The initialization value can basically be any value. Is the case, provided that increasing the frequency value to re-occur, as will be explained in more detail below, the initialization may be ^¬ worth, for example, the value "zero". In the event that the frequency value when re-naming of the caller communication subscriber is to be lowered as a SPIT caller, the initialization value may be a value greater than "zero", for example a predetermined initialization value M (with M> 0).

Subsequently, the method is continued in step 302, in which, as described above, it is checked whether a message has been received. However, determined in step 305 that the An established ^¬ caller communication device already in the SPIT table is included ( "Yes" in test step 305), the Common ^¬ will keitswert, specified in the table for the current caller communication subscriber is a predetermined value, for example by the value "one", is increased or ernied ^¬ rigt.

Subsequently, the method is continued in test step 302.

4 shows in a second flow chart 400 a method is also performed in the communication service provider computer 103, which is provided for processing the SPIT table in which a respectively with a Tabel ^¬ len index, also referred to as identification Index (ID In ^¬ dex), designated datasets are included. The ^¬ nen-described process steps for each said caller communication participant who was rated as SPIT communication node and stored in the table is performed.

Furthermore, each table data record contains the respective caller identification information as well as a frequency value with which the frequency of naming the respective caller communication subscriber is specified as SPIT communication subscriber.

After starting the process (step 401), an identifi- cation index i for identifying a respective table data set to a predetermined initialization value, game as set to the value "one" at ^¬ (step 402).

Subsequently, it is checked whether the caller communication subscriber identified with the identification index i fulfills a predetermined criterion according to the SPIT table, wherein according to an exemplary embodiment of the invention the predefined criterion is a threshold value which has a maximum tolerability. indicating the communication subscriber as SPIT communication subscriber (test step 403).

If the criterion is satisfied, that is, the threshold value is, for example exceeded (increasing the frequency value at each Designation of the communicating party as SPIT communication participant) or below (in decreasing the frequency value at each naming the Kommunikati ^¬ onsteilnehmers as SPIT communication participants) ( "Yes" in Test step 403), the respective communication part ^¬ will participants as a spitter communication subscriber is marked (step 405) and the process is continued in a further checking step 404, in which it is checked whether all the already WOR checked in the table stored communication participants to be.

However, if in the test step 403 the criterion has not yet been fulfilled for the tested communication user ("No" in test step 403), then the method is continued directly in test step 404.

If it has been determined in accordance with the test step 404 that not all of the subscribers entered in the table have yet been checked for the criterion ("No" in test step 404), the communication subscriber identification index i is increased by a predefinable value, for example by the value " one "he ^¬ höht (step 406) and the process is occurring in step 403 for the next in the table, with the new slave communication participant index i indicated Kommunikationsteil- continued.

If, however, all communication subscribers entered in the table have already been checked ("yes" in test step 404), then in a further test step (test step 407) a check is made as to whether the method should be terminated.

If this is not the case ("No" in test step 407), the method in step 402, in which the communication subscriber index i in turn approximate value to the predetermined initialization ^¬, for example the value "one" is set, continued. In other words, the communication ^¬ subscriber in the table checked again, starting at the arrival catch the table.

If, however, the process will be terminated ( "Yes" in step test ^¬ 407), so the process is completed (step 408).

It should be noted that in alternative execution ^¬ of the invention forms an arbitrarily complex criterion for determining whether it is at the respective communication participant is a spitter communication participants, can be used.

For example, a time window function may also be provided, i. In this case, a communication subscriber entered in the table is removed from the table if he has not been designated as a spitter communication subscriber by another communication user for a predetermined period of time. Also, depending on the time, the frequency value may be increased or decreased if, for this period of time, the respective communication subscriber has not been designated by a called communication subscriber as a spitter communication subscriber.

In another embodiment of the invention, it is provided that the above manner or in a manner prescribed be hereinafter ^¬ signaled SPIT marking on the part of a communication terminal, for example the second Kom ^¬ munikationseinrichtung 102, as one of multiple criteria for Determining spitter communication participants can be used.

Thus, the table or the jewei ^¬ time communication subscriber specific entries (For example, in this case, it should be noted that it is merely communication subscriber specific values and entries Han deIt, specifying the respective caller of the communication connection, but not the called communication subscriber) together with other characteristics characterizing the respective caller communication subscriber, for example with information indicating the duration of the established communication connections sent by the first communication device 101 Alternatively, the behavior of the Kommunikationsteilneh- mers describe, for example, information about how often the communication subscriber requests communication connections and how often parallel, ie at the same time, communication links are established.

Furthermore, as an additional information, the behavior of the communication subscriber to the communication service provider or to another communication service providers are involved, for example, information about whether the communication participant pays reliable bills or whether he often changes his residence.

May further taken into account as an additional criterion ^¬ the on how many subscriber-specific black lists (blacklists) of the respective communication stations if there is listed.

In the following, alternative embodiments for signaling a SPIT naming of a caller communication subscriber by a caller

Communication participants shown. The following alternative embodiments all have the advantage that they come off well without changing the communication terminal, ie ^¬ play, the second communication device 102nd This must be in an implementation of such

Procedure onsstandard not be taken into consideration on the respectively used Kommunikati ^¬, whereby a very cost low-cost implementation of this mechanism is possible even with verän ^¬ ed communication standards.

Illustratively, the following exemplary embodiments are common in that a predetermined code is entered into the same by the user of the second communication device 102. This code, or one of them clearly derived variable is inserted into a signaling message according to the jewei ^¬ time communication protocol, and this information is transmitted to the communication service provider computer 103, which on the reception of the signaling message, the message according to the code or by one of this Searched code (for example, unambiguously or in an unambiguous manner) derived size. If this code or this size in the signaling message included ^¬, the communications service provider detects computer 103, that it is this message is a SPIT-vote message, and it performs the above in conjunction with Figure 3 described method steps.

According to one embodiment of the invention, it is provided, before accepting the communication connection, a so-called call deflection to a pseudo-number ("* 12" or the like) specified by, for example, the communication service provider (for example by means of a SIP message "302 MOVED TEMPORARYLY "). The communication service provider computer 103 detects the corresponding calling number of the caller communication subscriber, i. the call number from the first communication device 101 and executes the method described in Fig.3.

According to another embodiment of the invention, it is provided, during an established communication connections fertil a call transfer (cail transfer) by the second communica ^¬ nikationseinrichtung 102 to a predetermined by the communication service provider pseudo number ( "* 12" or the like) (for example, by means of a SIP message "REFER") perform. The communication service provider computer 103 also in this case detects the call number of the first communication device 101 and performs the described method for entering the designated communication subscriber in the SPIT table or increasing or decreasing the respective frequency value in the SPIT table for the respective Kom ^¬ communication participant.

According to an alternative embodiment of the invention, a SPIT naming is provided after termination of the communication connection. In this case, a direct call is made by the second communication device 102 to a pseudo-number ("* 12" or the like) given by the communication service provider (for example, using a SIP message "INVITE"). The communication service provider computer 103 acquires the directory number from the client A, i. from the first communication device 101, using the data of the last stored call to the second communication device 102 (client B) analogous to a so-called Automatic Recall or a so-called Malicious Call Trace and performs the entry of the respective subscriber in the SPIT table or increasing or decreasing the frequency value for the caller communication subscriber in the SPIT table.

In summary, one aspect of the invention can be seen as entrusting the end user, i. the called communication subscriber, is allowed to make a rating of a caller communication party as to whether the respective VoIP call is a SPIT caller. The rating is then used and helps to identify other callers.

Communication participants, i. protect other end users from SPIT.

Technical aspects of implementation, such as those above-described ^¬ ne, can be divided into three aspects: a) discontinuation of the spit voting by the user; this should be done with minimal effort by the user to increase the acceptance of this approach.

b) storing the data at the communication service provider.

c) Evaluate the data to prevent SPIT.

The SPIT information is not related end-user by the operator or the communication service provider, as described above, but in this regard non-specific and global, stored in a table, in other words, stores ge ^¬.

The table contains, in addition to the number of the SPIT suspect communication subscriber, the number of SPIT votes that have considered this number to be an SPIT communication user.

A table entry is created in the first voting, ie at the first naming of the respective phone number as a SPIT number for a phone number and then counted up, ie increased, or decremented, ie decremented, depending on which type of rating the Frequently ^¬ nity of naming the respective participant is used.

The information about which end user submitted the voting is not saved in the table. It is optionally also did not differ whether the same end user has repeatedly issued a SPIT voting, or whether many different end groove ^¬ zer have given their voting. Storing Sender Relevant information is in accordance with these embodiments of the invention not necessary because it's stiffness by only the frequently, how often underestimated a caller as SPIT caller is ^¬. It should be noted that the procedure can also be set a ^¬ to cultivate subscriber-specific blacklists.

The operator or communication service provider uses the information to calculate a global SPIT probability for ^particular caller telephone numbers. This is done in accordance with an embodiment of the invention in combination with the analysis of other features of the SPIT suspect.

For example, the end-user voting SPIT ^¬ as input variable for a self-learning system for SPIT detection are used which any artificial intelligence algorithms such as artificial neural networks, genetic algorithms, etc. used.

In summary, some advantages of the SPIT signaling embodiments described above are set forth below:

• The end user can easily mark a call as a SPIT call. If this example, soft keys, ie used by software alternative than mechanical ^¬ specific keyboard, implemented buttons, a button press is needed. This increases the Ak ^¬ tance of the procedure by the end user.

• The SPIT flag is flexible as it can be triggered both during the call and immediately afterwards, or even before the call is accepted.

• Callers with a suppressed number are also detected, since the communication service provider has the information about the telephone number and the identification of the subscriber requesting the respective communication connection. • The communication service provider has the option of displaying the SPIT-marked numbers in a global list

(Table) and thus to provide statements about the SPIT probability of certain numbers or specific communication participants. These

Specifying the SPIT probability can be offered as an additional sätzlicher to ^¬ communication service (Value Added Service).

• The global list (table) allows for the collection of significantly more SPIT callers than for subscriber-specific lists.

• The global list can be adjusted by automatic algorithms, for example, by analyzing the Frequently ^¬ stiffness of calls one on the list caller.

• The combination of subscriber-specific blacklists to determine a general SPIT probability is eliminated and thus a considerable amount of computation time required is saved.

• The provider may also offer end-user specific blacklists as an additional service.

• The communication service provider may give the end user access to change the blacklists and, if necessary, to change white lists (whitelists), so that afterwards any "wrong votes" can be changed To make sure that the phone number that has been used with phone number suppression does not show the complete number.

Claims

claims 1. A method for computer-aided building of a table with communication participants, which has been stated that they have requested at least one for at least ei ^¬ nen other communication participants unwanted voice-communication connection, Wherein a message is received, which contains: information indicating that a communication connection between a caller communication subscriber and a called communication subscriber was undesirable for the called communication user, A caller identification information by means of which the caller communication subscriber is identified, Wherein the caller communication subscriber is nonspecifically entered into a table with regard to the called party communication subscriber, or, if the caller subscriber is already registered in the table, a value indicating the frequency with which the caller subscriber is specified or humiliated. 2. The method of claim 1, wherein the message is received as a message sent by the at least one other communication participant. 3. A method according to claim 1 or 2, wherein the message is transmitted according to a communication connection control protocol. 4. The method according to claim 3, wherein the message is transmitted in accordance with the Session Initiation Protocol. The method of claim 4, wherein the message is a Session Initiation Protocol Notify message. 6. The method according to claim 5, wherein the message is a Session Initiation Protocol based message with an additional message field in which the information is included, by means of which a communication link between a caller communication subscriber and a called communication user for the caller was unwanted, is transmitted. 7. A method according to claim 5 or 6, wherein the information indicating that a communication link between a caller communication subscriber and a called party communication subscriber for the called party communication subscriber was undesirable is transmitted in the header field of the message. 8. The method any one of claims 1 to 7, wherein, in the Kommunikationseinrich- the callee communication subscriber tung eingege ^¬ Bener code is transmitted in the message by means of which the receptions and seminars ^¬ ger of the message is indicated in accordance with that a Kommunikati ^¬ onsverbindung between a Caller communication subscriber and a caller communication party for the caller communication subscriber was undesirable. A method according to any one of claims 1 to 8, wherein messages are received from different communication participants, each message containing: An information indicating that a communication connection between a caller communication subscriber and a caller communication subscriber was undesirable for the caller communication subscriber, A caller identification information by means of which the caller communication subscriber is identified. 10. A method for computer-aided determination of at least one communication subscriber who is assumed to have requested at least one voice communication connection which is undesirable for at least one other communication participant, wherein for at least one in a table, in the communication subscriber, the caller in the case of a communication connection between a caller communication subscriber and a called party communication subscriber, which was undesirable for the called communication user, with regard to the caller Communication subscriber are registered unspecifically, registered communication participant is checked whether this meets a predetermined criterion, • In the event that the registered communi ^¬ cation participant satisfies the predetermined criterion, the communication participant is accepted as a communication participant who has requested at least one for at least one other communication participants unwanted voice-communication connection. 11. The method of claim 10, wherein at least one additional criterion is used for determining whether there is a communication subscriber in a communications ^¬ subscriber who has requested at least one nikationsteilnehmer for at least one other communi ^¬ undesirable voice communication link. 12. The method according to claim 11, wherein the at least one of the following additional criteria is used: • duration of one or more communication connections in which a respective communication part was ^¬ participants of the caller communication subscriber, • information about the behavior of the communication subscriber as ^¬ caller communication subscriber, • Information about the behavior of the caller communication subscriber to one or meh ^¬ eral communication service providers. 13. The method according to any one of claims 1 to 12, wherein as a voice communication connection a packet-switched voice communication connection or a circuit-switched voice communication connection is set. 14. The method according to any one of claims 1 to 13, wherein as the voice communication connection, an Internet-based voice communication connection is used. 15. The method according to claim 14, wherein is used as a voice communication connection, a voice over Internet Protocol voice communication connection. 16. The method according to any one of claims 1 to 15, performed by a computer of a communication ^¬ service provider. 17. An apparatus for establishing a table of communication stations, which has been specified by that they have at least a request for at least one other communi ^¬ nikationsteilnehmer undesirable voice communication connection, With a receiver for receiving a message containing: An information indicating that a communication connection between a caller communication subscriber and a called communication subscriber was undesirable for the called communication subscriber, A caller identification information by means of which the caller communication subscriber is identified, With a table management unit which is set up in such a way that it nonspecifically divides the caller communication subscriber into a caller party with regard to the caller's communication subscriber Or, if the caller communication subscriber is already entered in the table, increases or decreases a value with which the frequency of the caller communication subscriber's name is specified. 18. An apparatus for determining at least one Kommunikati ^¬ onsteilnehmers for which it is assumed that he Minim ^¬ least one for at least one other communication participant undesirable voice communication connection is requested, • with a test unit designed to test for at least one in a table, in the communication subscribers who were callers in a communication connection between a caller communication subscriber and a caller communication subscriber who was undesirable for the called communication user, with regard to the caller Communication subscriber are nonspecific registered, registered communication participants, whether this meets a predetermined criterion, • with a determination unit, which is so ^¬ directed that it determines the communication participant as a communication participant in the event that the registered ^¬ participants in the predetermined criterion, the at least one for at least one other communication ^¬ subscriber has requested unwanted voice communication connection. 19. A computer program element for establishing a table of communication stations, has been specified by means of which that they have at least one request for at least one ande ^¬ ren communication subscriber undesirable voice communication link, which, when executed by a computer, comprising: • a message is receive, which contains: An information indicating that a communication connection between a caller communication subscriber and a called communication user was undesirable for the called communication user, A caller identification information by means of which the caller communication subscriber is identified, The caller communication ^{subscriber is} un ^¬ specifically entered in a table with respect to the called-communication ^subscriber or, if If the caller communication subscriber is already entered in the table, a value indicating the frequency of calling the caller communication subscriber is increased. 20. Computer program element for computer-aided determination of at least one communication ^subscriber for whom it is assumed that he has requested at least one voice communication connection which is undesirable for at least one other communication subscriber and which, when executed by a computer, comprises: • for at least one in a table, in the communication subscriber, the caller in a communication connection between a caller communication subscriber and a caller Communication participants were, which was undesirable for the called communication subscriber, unspecific registered with regard to the called communication subscriber, registered communication participant is checked whether this meets a predetermined criterion, • in the event that the registered communication ^¬ participant meets the predetermined criterion, the communication participant is accepted as a communication participant who has requested at least one undesirable for at least one other communication subscriber voice communication connection. 21. A method of signaling that a communication link was undesirable to a called party of communication In which a code is entered by the called-up communication subscriber into a communication device, by means of which the recipient of the message is informed that a communication connection between a caller Communication partner and the called party for the caller communication subscriber was undesirable, Wherein a message is generated which contains the code as well as a caller identification information by means of which the caller communication subscriber is identified, • said message ^¬ Gesen to an evaluation unit is det. 22. The method according to claim 21, wherein the message is sent to an evaluation unit by ei ^¬ nes telecommunications network. 23. Communication device, • with an input unit for inputting a code, by means of which angege ^¬ ben is the recipient of the message, that a communication connection between a caller communication subscriber and the called-communication subscriber for the Called communication subscriber was undesirable, • having a message generating unit for Erzeu ^¬ gene of a message containing the code as well as a callers, fer-identification data by which the caller to ^¬ communication subscriber is identified, • with a sender to send the message to an evaluation unit. 24. A computer program element for signaling that a communication connection was undesirable to a caller communication subscriber that, when executed by a computer, has: • a code entered from the called communication user into a communication device by which the recipient of the message is indicated will that be a communication link between a caller communication subscriber and the called-communication subscriber for the callee-Kommunikationstei1nehmer was undesirable • a message is generated that contains the code and ei ^¬ ne caller-identification information by means of which the caller communication subscriber is identified, • the message is sent to an evaluation unit.