WO1999037100A1

WO1999037100A1 - Method for establishing a telecommunication link and telecommunication system therefor

Info

Publication number: WO1999037100A1
Application number: PCT/DE1998/003688
Authority: WO
Inventors: Reinhard Becher
Original assignee: Siemens Aktiengesellschaft
Priority date: 1998-01-16
Filing date: 1998-12-15
Publication date: 1999-07-22
Also published as: DE19801498A1

Abstract

In order to establish a link in a telecommunication network (TKN) between a first subscriber (TNA) with at least two communication terminals (TEA,PPA) connected to the network and another subscriber, destination data is transmitted via a data network (IPN) from a data processing system (PCA, CTS) of the first subscriber (TNA) to the service control system (SCP) of the network (TKN), whereby said destination data (ZDA) contains information on the type and/or location of the terminal of the first subscriber (TNA) with whom the link is to be established. On the basis of said destination data (ZDA), the service control system (SCP) can produce destination information (DDA) which is necessary in order to produce a link with the communication terminal of the first subscriber (TNA) in a switching station (SSP) of the network (TKN). This link is subsequently connected to a link with the other subscriber (TNB).

Description

description

_V out to build a Telecommuni ationsverbindung and telecommunication system therefor

The invention relates to a method for establishing a Verbin _d ung in a telecommunications network between a first subscriber, which has at least two connected to the network terminals, and a second subscriber of the network, the network comprising at least one for preparing compounds furnished switching station and a Service control station set up for storing subscriber data, at which the switching station of the network - in response to a corresponding connection request

by means of target information provided by the service control station and relating to one of the first subscriber's terminals

- Establishes a connection branch to the terminal and links it to a connection branch to the second subscriber.

The invention also relates to a telecommunications system consisting of a telecommunications network which has a service control station set up for storing subscriber data and at least one switching station which is set up to set up connections

- upon a corresponding connection request

by means of destination information supplied by the service control station relating to a terminal of a first subscriber who has at least two terminals connected to the network,

- Establish a connection branch to the terminal and link it to a connection branch to a second subscriber of the network for a connection. In implementing modern public telecommuni ^¬ tion networks plays next to the growing range of services, which in addition to basic services such as telephone, facsimile, electronic mail (e-mail) also additional services such as logging Diversion or include fees query, the free combination of multiple services for use by a participant, as well as the movement of participants an increasing ^¬ de role. In a broad sense, the telecommunications networks also include the data networks built up for the transmission of computer-related data, for example local computer networks, so-called LANs ( ^λ Local Area Networks'), and nationwide networks such as the known Internet. The ^various services are integrated into a network with a comprehensive range of services, particularly in so-called ISDN networks (Integrated Services Digital Network). Among other things, ISDN networks open up the possibility of implementing data-capable connections directly in the telecommunications network.

The term mobility usually refers to the location independence of the terminal device ( ^λ Terminal Mobility '), which is realized, for example, in mobile radio networks such as the GSM network. However, mobility is to be understood here in a broader sense, which also includes the freedom of choice of the subscriber with regard to the terminal device used (^ Subscriber Mobility '), which is possible, for example, by means of PIN codes ( ^λ Personal Identification Number'), such as the After logging in with his PIN number on a terminal, the subscriber can access the services to which he is entitled in the personal configuration.

A special type of combination of services is the simultaneous exchange of messages, for example acoustic information in a telephone conversation, and of computer-supported data, for example computer-generated graphic animation, which is intended, for example, to visually illustrate what has been discussed by telephone. For the interaction of data processing and (acoustic) telecommunications the term computer-telephone integration has become established in specialist circles; see, for example, "OVUM Reports: Computer Telephony Integration - the Business Opportunity", by S. Glassman et al., Ovu Ltd., London 1995, ISBN 1 898972 05 2. This often gives rise to the desire for the sequence of the two compounds ren to coor ^¬ each other, for example, the structure and the termination of both compounds to carry out automatically at the same time or even build up, maintain and terminate the telephone call mers computer controlled by the participants to be monitored.

For telephones that are connected in a private telephone network, for example in a company building system, to a suitably set up home exchange (PBX, ^ Private Branch eXchange '), there is the possibility of establishing calls (outgoing and incoming) using a computer that is connected to the home exchange and provides supporting information for connection establishment. This technology is used, for example, in so-called ^v call centers, in which a number of extensions are set up for a service, for example a telephone order service for a dispatch, and calling subscribers, in the example a customer with an order, depending on the currently unoccupied ones Extensions and, if necessary, additional information provided by the caller can be connected to an extension, which then serves the caller (customer). In this case, a computer-telephone integration can also be introduced, with a computer being assigned to each extension and the central office and / or a server computer assigned to it being set up for coordinating the telecommunications and the computer connection. However, this solution is limited to the area of a private telephone network and, because of the sometimes very different protocols used, it is difficult to transmit between different systems. In addition, mobility of the participants involved with regard to the terminal devices has not been provided so far, in particular the assignment between the Computer of the participant and a terminal used by the participant is given.

It is therefore an object of the invention to enable the coupling of a public telecommunications network, in particular of ^such networks which permit the mobility of the subscribers, to a computer of a subscriber of the telecommunications network and to use this coupling to ensure that the subscriber's computer is able to Telecommunications network provides information for determining the possible or cheap connection route or even initiates the establishment of a telecommunications connection. Here, the implementation of a computer-telephone integration should be possible in a form that allows both subscriber mobility in the telecommunications network and flexible assignment options between a terminal and a subscriber's computer.

This object is achieved on the basis of a method of the type mentioned at the outset by means of a method in which the service control station generates the target information on the basis of target data which

the service control station is transmitted by a data processing system assigned to the first subscriber via a data network connecting the service control station and the data processing system, and

- Contain information on the type and / or location of that of the first subscriber's terminals to which the connection is to be established.

This solution allows computer-telephone integration within the framework of a public telephone network, with mobile subscribers in particular being possible not only in the sense of a wireless connection, but also in the sense of switching between different end devices. The use of signaling protocols, which are widely standardized in public networks, makes them portable and mutual compatibility of computer-telephone integration between different networks.

In a preferred embodiment of the invention, when the connection is established by a connection request is ^¬ least the first subscriber (TNA) is initiated, the Verbin ^¬ extension request sent to the service control station and transmitted from the latter to the switching station of the data processing system via the data network. This shifts the route of the connection request from the telecommunications network to the data network, on which a connection must be made available anyway, and thus reduces the signaling to and.

It is further advantageous in the sense of the reduced signal complexity if the data processing system sends the target data together with the connection request.

In another embodiment, which simplifies the signaling sequence in the event that the connection establishment is initiated by a connection request on the part of the second subscriber, the service control station is set up in such a way that it sends a request to the data processing system which is a request for the transmission serves the target data.

A further reduction in the signal complexity results when the data processing system sends the target data together with a signal for terminating a data connection in the data network between the data processing system and the service control station.

In order to reduce the signal traffic, it is furthermore favorable if the target data are stored in the service control station for the following connection establishment. The following connections, which are based on the same configuration of the first part In this case, subscribers no longer need to transfer the target data with identical content.

In a preferred embodiment of the invention, which reduces the operating effort guide shape that manages Datenverarbei ^¬ processing system, which are translated the Endgerate the first subscriber for a connection, and selects on the basis of this comparison fugbarkeitsdaten that of Endgerate out, is to be prepared to which the compound is , determines the target data and transmits it to the data network.

A further embodiment in which, in addition to the connection in the telecommunications network, a data connection is created between a data processing system of the data processing system and a data processing system of the second subscriber via the data network, the establishment of the data connection in the data network in at least one of the two data processing systems sending out the connection request for the connection in the telecommunications network is beneficial for the application of computer-telephone integration.

It is advantageous here in the sense of a reduction in expenditure if a server computer of the data processing system manages the availability of the data processing systems of the data processing system and, based on these availability data, selects those of the data processing systems to which the data connection is to be established.

In another preferred embodiment, the data network is advantageously implemented within the telecommunications network and the target data are supplied to the service control station via a data-capable connection of the telecommunications network.

A favorable variant of the invention realizes the telecommunications network as an intelligent network. An equally favorable variant of the invention realizes the telecommunications network as a mobile radio network and the terminal of the first subscriber as a mobile device.

The task described above is further achieved with the aid of a telecommunication system of the type described in the introduction, in which a data network is provided connecting the service control station and a data processing system assigned to the first subscriber, the data processing system is set up to provide the service control station with target data, the information on Art and / or the location of that of the terminal devices of the first subscriber to which the connection is to be established, and the service control station is set up to generate the destination information based on the destination data. The advantages of this system according to the invention have already been explained above.

The invention is explained in more detail below on the basis of exemplary embodiments with reference to the attached figures. Here show:

1 shows a telecommunication system according to the invention;

2 shows a signaling sequence for setting up a call going out from the first subscriber in a first exemplary embodiment, in which the target data are transmitted to the service control station via a computer network;

3 shows a signaling sequence for setting up a call arriving at the first subscriber in the first exemplary embodiment;

4 shows a signaling sequence for setting up a call going out from the first subscriber in a second exemplary embodiment, in which the target data are transmitted via the data-capable telecommunications network; such as 5 shows a signaling sequence for setting up a call arriving at the first subscriber in the second ^exemplary embodiment.

The first exemplary embodiment relates to a telecommunications ^¬ munikationssystem, are connected to the subscriber, the use of both telephone calls and computer connections. For the establishment of these connections, the telecommunication system shown in FIG. 1 comprises an ISDN network TKN and a computer network IPN.

A subscriber TNA connected to the telecommunication system, hereinafter also referred to as the first subscriber, has, for example, access to one or more terminals of the ISDN network TKN, e.g. a telephone device TEA connected via a fixed line and a mobile phone PPA, on the other hand to one or more data processing systems, e.g. two personal computers PCA, PCA '. The data processing systems PCA, PCA 'of the first subscriber TNA are connected to the computer network IPN via a server computer CTS. The server computer CTS controls and secures the data connections in the computer network IPN to the data processing system which is formed by the data processing systems of the first subscriber TNA and possibly other subscribers.

For the execution of the ISDN telecommunication services, switching offices are provided in the ISDN network TKN, of which only the central switching station SSP ('Service Switching Point') of the GSM-capable ISDN network TKN is shown in FIG. 1, and in symbolic form the connection concentrator ANC, via which the telephone TEA of the subscriber TNA is connected to the network TKN, and that GSM base station BSC, in the catchment area of which the mobile phone PPA of the subscriber TNA is located, and that to the mobile phone PPA via a GSM air interface can connect. The switching station SSP is responsible for establishing and maintaining the connections in the network TKN; they obtained the here ^¬ f _o r necessary control instructions and information specific to the ^¬ Zielmformationen DDA concerning bility the accessibility and connection paths of the participants of the sogenann ^¬ th service control point (SCP 'Service Control Point'), the service control point SCP is as a network node with a centralized database for the control of the services and in particular storage and administration of subscriber data and equipped with an appropriate interface to the switching station SSP. The INAP protocol is available for communication via this interface, for example, compare the ETSI standard "Intelligent Network (IN); Intelligent Network Capability Set 1 (CS1), Core Intelligent Network Application Protocol (INAP), Part 1:

Protocol Specification ", De / SPS-03015, Draft prETS 300 374-1, Nov. 93 1. The switching station SSP and the service control station SCP form the central control device of the ISDN network TKN and can be implemented in practice in various ways, for example Distributed decentrally to several network nodes or combined in a single control node; in the latter case, an internal interface between the functional areas of the central control node would be assumed instead of the INAP interface.

Another, second subscriber TNB, who in the following explanations represents the connection partner of the first subscriber TNA, is symbolically indicated in FIG. 1; for example, it could be connected directly to the ISDN network, similar to the first subscriber TNA, be it wired, be it via radio, or indirectly via another telecommunications network.

According to the invention, the service control station SCP is connected to a data network and is set up for data exchange, in particular for receiving the target data ZDA, via the data network IPN. The target data are sent to the control device of the Network TKN directed messages, via which terminal device ^¬ connection and, if necessary, via which network or connection ^¬ the subscriber TNA can be reached, and possibly information about the type of terminal located there. For example, if the subscriber TNA wants to use the mobile device PPA and signals this via the computer PCA, for the target data ZDA example, the MSISDN number (which in ^¬ plicitly specifying includes, to be used to connect the GSM network) and Requires additional information about functional features of the mobile device PPA, as well as, where appropriate, corresponding information relating to the computer PCA selected by the subscriber TNA. The target data ZDA are stored in the service control station SCP and are retrieved from there when the connection is subsequently established, unless target data has been sent again. It is therefore only necessary to send the target data ZDA on the first connection to the subscriber TNA, or to update the accessibility information, for example after the subscriber TNA has switched to another terminal PPA.

In principle, the data network which is used for the transmission of the target data ZDA from the data processing system CPA of the subscriber to the control device of the network TKN, as indicated in Fig. 1 above, by means of a network independent of the telecommunications network TKN, e.g. a computer network IPN such as the Internet or, in special cases, a so-called local area network. It cannot be ruled out that part or all of the computer network will be implemented with the help of the TKN telecommunications network.

It should be noted that the data network IPN should be designed for a correspondingly fast data transmission in order to process the transmission of the target data ZDA sufficiently quickly. In the case of the Internet, this is given, for example, by an FTP transfer, which is connection-oriented, but not through the message-oriented email. In the imple ^¬ tion of the data network in the context of a telecommunications network such as an ISDN network may be assumed that the data transmission similar to virtually instantaneously occurs as in a telephone conversation.

The call set-up of a abge from the first subscriber TNA ^¬ Henden conversation in the example shown in FIG. 1, the telecommunication system according to the invention will now be explained with reference to the shown in Fig. 2 signaling sequence.

The subscriber TNA enters his connection request on the computer PCA, for example by clicking on a telephone number. The connection request includes, among other things, information as to which terminal PPA the subscriber TNA wants to use and to which other subscriber TNB the call is to be made, and, if appropriate, details of the type of connection. This data can e.g. be pre-programmed in a personal telephone book on the computer PCA by default or can be entered explicitly by the subscriber TNA after a corresponding request by the computer PCA, for example in a menu dialog.

The connection request is now transmitted to the control devices of the ISDN network TKN via the data network IPN. For this purpose, the computer PCA first reports the connection request to the server computer CTS, which then sends a connection request to the control device of the network TKN via a connection in the data network IPN. In addition to the call number of the second subscriber TNB, target data ZDA of the first subscriber TNA are also transmitted according to the invention. The connection request takes place, as shown in FIG. 2, in that the server CTS sends a message to the service control station SCP which contains the required data, namely the target data ZDA and the call number of the second subscriber TNB. After receiving the connection request, the service control station ^¬ SCP stores the received data, for example, so that at meh ^¬ reren connection requests of the subscriber from the TNA ^¬ same terminal configuration of the transmission data of the target must take place once only ZDA. If the number of the terminal - in the example, the MSISDN number of the mobile phone can ^¬ PPA - not supplied with the target data ZDA, the service control point SCP determined from a table the associated number. This table, which in other cases can also be implemented, for example, as a database, is continuously updated on the basis of the target data ZDA received at the service control station SCP and provides the assignment of the computer call number and the call number of the respectively associated terminal to one another.

After evaluating the data of the connection request, the service control station SCP delivers a feedback ACK to the server CTS, which forwards it to the computer PCA for confirmation to the subscriber. Conveniently, a message window or the like is anyway on the computer during the dialogue in the data network IPN. entertained for the information of the participant.

According to the invention, the service control station SCP is prompted by the previous dialog for the transmission of the connection request to initiate the establishment of the connection between the two subscribers TNA, TNB, the connection branch to the second subscriber TNB being set up here before that to the first subscriber TNA. The service control station SCP sends an ICA message to the switching station SSP

('Initiate Call Attempt') for the establishment of a connection branch to the second subscriber TNB, and an RRB message (Request Report Event '), which informs the switching station SSP that this should be reported to the service control station SCP after the connection branch is set up . The structure of the two connection branches is only indicated in FIG. 2, namely in each case by the introductory IAM command ('Initial Address Message') and the message ANS ('answer') from the subscriber TNB, TNA to confirm the existence of the connection branch. The remaining operations of the connection establishment ^¬ superstructure, such as a routing via network nodes, a request with the competent home office or performing a paging, are well known in the art and are not within the subject matter of the invention. The switching station SSP reports to the service control station SCP the success of setting up the connection branch to the second subscriber TNB in an ERB message ('Event Report'), whereupon the service control station SCP receives a CON message ('Connect') for setting up a connection branch sends to the first subscriber TNA to the switching station SSP. The CON message is generated by the service control station SCP, inter alia on the basis of the stored destination data ZDA, and contains the destination information DDA of the first subscriber TNA required for the establishment of the connection branch by the switching station SSP. After the establishment of both connection branches and the subsequent connection of the two subscribers TNA, TNB to one another by the switching station SSP, the requested connection is established. Since the establishment of the connection branch to the first subscriber TNA may take some time, for example for the paging of the handset PPA, an announcement can be recorded for the waiting subscriber TNB.

The messages appearing in the signaling sequences of FIGS. 2 to 5, which are exchanged within an ISDN network, are components of the ISUP and INAP

Protocols that are used for interim signaling or for dialogue between network nodes of an intelligent network and are known to the person skilled in the art. Solid arrows mean signals which are exchanged via a control channel of a connection branch in the ISDN network TKN, while broken arrows indicate signals which are transmitted independently of a connection. For details regarding this Protocols are referred to the ITU and ETSI standards, in particular the ITU standard Q.763 "Formats and Codes of the ISDN User Part of Signaling System No. 7" for the ISUP protocol, as well as the already mentioned INAP standard . The command sequences are of course single ^¬ Lich exemplary character.

The connection between the two subscribers TNA, TNB can, in addition to the telecommunications connection between the terminals of the subscribers, according to the invention additionally include a data-capable connection from the computer PCA of the first subscriber TNA to the second subscriber TNB, so that the telecommunications connection and data connection in the sense of a computer telephone -Integration can be operated in parallel. On the part of the second subscriber TNB, for example, a computer can also be connected to the data-capable connection; as a further possibility, the terminal of the second subscriber itself can be data-capable and can also operate the data exchange with the computer PCA. This data-capable connection can be established simultaneously with the telecommunication connection; In addition, there is the possibility of not opening the connection established by the computer PCA of the first subscriber TNA as described above, but rather leaving it open and transferring it to the data-capable connection as a connection branch.

3 shows the call setup in the case of a call initiated by the second subscriber TNB. The second subscriber TNB, who can in principle be any subscriber to the ISDN network TKN, dials the first subscriber TNA. The incoming call request is signaled to the switching station SSP as an IAM message according to the already known method. The first subscriber TNA or the call number of the computer PCA or the server CTS is marked in the switching station SSP as "intelligent number".

On the basis of this marking, the connection request in the switching station SSP initiates a dialog with the service control station SCP off; in this case it is passed on from the switching station SSP to the service control station SCP in the form of an IDP message ('Initial Detection Point') which contains the call numbers of the first subscriber TNA or the computer PCA or the server CTS, and of the second subscriber TNB , the target data ZDA (where m latter the compound Sanforde ^¬ tion are included) and, if desired, an identi fication ^¬ contains the desired service.

According to the invention, the service control station SCP directs the

Target information from target data relating to the respective participant, here the first participant TNA. Assuming that no target data of the first subscriber is stored in the service control station SCP or that the existing target data are no longer marked as current, the service control station SCP now initiates a connection to the computer PCA of the first subscriber TNB in order to query current target data ZDA. The service control station SCP thus sends a request for target data to the server CTS of the first subscriber TNA via a connection in the data network IPN, similar to the case of the outgoing call explained above. The server computer CTS checks whether corresponding devices and / or data processing systems are free on the part of the requested subscriber TNA and sends a corresponding acknowledgment ACK together with the target data ZDA to the service control station SCP. For this purpose, the server CTS is favorably set up to provide information regarding the availability of participants, e.g. Which end devices are occupied or free, via which end devices the subscriber can be reached and what assignment is permitted between the end device and computer, for example by means of a table. The subscriber TNA can set this availability data at any time according to his personal wishes and current requirements.

After arrival of the target data ZDA for the first participant

TNA, the service control station SCP can continue the actual connection establishment between the two subscribers TNA, TNB. Zen. The connection branch to the second subscriber TNB already exists, which is why the service control station SCP sends a CON message for the establishment of a connection branch to the first subscriber TNA to the switching station SSP. This step and the other steps of establishing the connection in the incoming call are carried out in exactly the same way as in the outgoing call shown above with reference to FIG. 2; 3, the structure of the connecting branches is only hinted at, insofar as it is important for the invention. In addition to the sequence of FIG. 2, however, it is useful if necessary to ^forward the message ANS through the switching station SSP to the second subscriber TNB or the switching offices on the part of the second subscriber TNB.

4 and 5 show signaling sequences, corresponding to FIGS. 2 and 3, for a second application example, in which the data network IPN 'used for transmitting the target data ZDA is supplied by the telecommunications network TKN. As already mentioned, the ISDN network TKN shown in FIG. 1 is not only designed as a telecommunications network for telephone connections, but also for data-capable connections for the exchange of data, for example between data processing systems. This is used in the second embodiment to the effect that the ISDN network also serves as the basis for a data network IPN '. As indicated in FIG. 1, the data network IPN 'is implemented using the means of the ISDN network TKN. (The computer network IPN used in the first exemplary embodiment is now disregarded.) In this exemplary embodiment, the switching station SSP is set up to forward messages from a data-capable subscriber PCA to the service control station SCP. For this purpose, the already existing connection options of a data-capable network TKN, IPN 'and the already existing interface between the switching station SSP and the service control station SCP can expediently be used. As in the first exemplary embodiment, the subscriber TNA enters his connection request on the computer PCA, which is forwarded via the server CTS to the control device of the ISDN network.

The transmission of the connection request is made as shown in Fig. 4 characterized in that the server CTS to the Vermitt ^¬ lung station SSP sends an IAM message (Initial Address Message), that contains the data of the connection request including the destination data ZDA. The phone number of the

Server CTS or the computer PCA is marked in the switching station SSP as “intelligent number”. On the basis of this marking, the connection request in the switching station SSP triggers a dialog with the service control station SCP and is therefore sent from the switching station SSP to the

Service control station SCP passed on in the form of an IDP message ('Initial Detection Point'), which contains the phone numbers of the computer PCA, the second subscriber TNB and the target data ZDA (insofar as the latter were included in the connection request) and an identification of the desired service . In an ISDN network, the so-called 'service key' is used as identification, in this case, for example, "Mobile distributed call center - originated".

After receiving the IDP message, the service control station SCP initiates the service corresponding to the identification. The received data is saved as mentioned above and supplemented if necessary. If necessary, the connection of the computer CPA to the network TKN is now triggered by the service control station SCP. For this purpose, it sends an RC message ('Release Call'), which contains the service identification in the triggering reason, to the switching station SSP. The latter releases the connection to the computer PCA with a REL message ('release') in which the service identification can also be transmitted to the computer PCA as additional information if this is supported by the network TKN and the computer connection. 00 1>. -d 00 00

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can be used while their computers are relieved of the operation of the data network IPN. In this Ser ^¬ ver architecture is then usually the data basis for Ver ^¬ administration of the currently free devices, or in the case of a computer telephony integration stored the "pairs" of device and computer on the server CTS. In this case must however, the termination of an occupancy of the terminals and / or computers are reported to the server CTS.

Based on the exemplary embodiment, a 'call center' can be implemented, in which the 'call center' control can be carried out by the server computer CTS or by the service control station SCP. In the latter case, in which the connection of the subscriber computer PCA, PCA 'can of course also be implemented directly to the data network IPN without a server computer, a table of the subscribers involved in the' call center 'with the respective one is provided in the service control station SCP assigned terminal devices and computer numbers. When a call comes in for the 'call center', the service control station SCP searches in the 'call center' -

Table a free subscriber TNA and connect the call to the assigned terminal PPA and computer CPA, which may be queried for target data, e.g. if the connection to the terminal PPA does not come about without errors. When the connection is established, subscriber TNA, terminal PPA and computer PCA are identified accordingly in the 'Call Center' table. As is known for telecommunications networks, the existing connection is held without the involvement of the service control station SCP. After the connection has ended, this is reported either internally by the switching station SSP or via an acknowledgment connection established for this purpose by the computer PCA to the service control station SCP, which again enters the subscriber TNA as free in the 'call center' table.

Of course, the exemplary embodiments presented above are exemplary embodiments of the invention

LO LO

Claims

claims

1. A method for establishing a connection in a Telecommun ^¬ nikationsnetz (TKN) between a first subscriber (TNA), which via at least two connected to the network (TKN) terminals (TEA, PPA) has, and a second subscriber (TNB) of the Network (TKN), the network (TKN) having at least one switching station (SSP) set up for establishing connections and one service control station (SCP) set up for storing subscriber data, in which the switching station (SSP) of the network (TKN)

- upon a corresponding connection request

- By means of target information (DDA) supplied by the service control station (SCP) and relating to one of the terminals of the first subscriber (TNA)

- Establishes a connection branch to the terminal and links to a connection branch to the second subscriber (TNB) to a connection, characterized in that the service control station (SCP) generates the destination information (DDA) on the basis of destination data (ZDA) which

- The service control station (SCP) are transmitted by a data processing system (PCA, CTS) assigned to the first subscriber (TNA) via a data network (IPN) connecting the service control station (SCP) and the data processing system and

- Include details of the type and / or location of that of the first subscriber's terminal equipment (TNA) to which the connection is to be established.

2. The method according to claim 1, characterized in that the connection establishment is initiated by a connection request on the part of the first subscriber (TNA), the connection request being sent from the data processing system via the data network (IPN) to the service control station (SCP) and from there to the switching station (SSP) is forwarded.

3. The method according to claim 2, characterized in that the data processing ^¬ system sends the target data (ZDA) together with the connection request.

4. The method according to claim 1, characterized in that the connection establishment is initiated by a connection request on the part of the second subscriber (TNB) and the service control station

(SCP) sends a request to the data processing system, which serves as a request for the transmission of the target data (ZDA).

5. The method according to claim 4, characterized in that the data processing system sends the target data (ZDA) together with a signal for terminating a data connection in the data network (IPN) between the data processing system and the service control station (SCP).

6. The method according to any one of claims 1 to 5, characterized in that the target data (ZDA) are stored in the service control station (SCP) for the following connection establishment.

7. The method according to any one of claims 1 to 6, characterized in that the data processing system (CTS) manages which of the terminals of the first subscriber (TNA) are available for a connection, and on the basis of this availability data selects which of the terminals to which the connection is to be established, the target data (ZDA) is determined and transmitted to the data network (IPN).

8. The method according to any one of claims 1 to 7, characterized in that in addition to the connection in the telecommunications network (TKN), a data connection between a data processing system (PCA) of the data processing ^¬ system and a data processing system (PCB) is formed of the second party via the data network (IPN), whereby the establishment of the data connection in the data network (IPN) in zumin- least one of the two data processing systems, the transmission of the connection request for triggers the connection in the telecommunications network (TKN).

9. The method according to claim 8, characterized in that a server computer (CTS) of the data processing system manages the availability of the data processing systems (PCA) of the data processing system and uses this availability data to select those of the data processing systems to which the data connection is to be established.

10. The method according to any one of claims 1 to 9, characterized in that the data network (IPN) is realized within the telecommunications network (TKN) and the target data (ZDA) via a data-capable connection of the telecommunications network (TKN) to the service control station (SCP) become.

11. The method according to any one of claims 1 to 10, characterized in that the telecommunications network (TKN) is implemented as an intelligent network.

12. The method according to any one of claims 1 to 11, characterized in that the telecommunications network (TKN) is implemented as a mobile radio network and the terminal of the first subscriber (TNA) as a mobile device (PPA).

13. Telecommunications system, consisting of a telecommunications network (TKN), which has a service control station (SCP) set up for storing subscriber data, and at least one switching station (SSP), which is set up to set up connections - upon a corresponding connection request

- means provided by the service control station (SCP) target ^¬ information (DDA), which, which by means of at least two connected to the network (TKN) terminals (TEA, PPA) has a terminal of a first parti ^¬ mers (TNA), relate,

- Establish a connection branch to the terminal and link it with a connection branch to a second subscriber (TNB) of the network (TKN) to form a connection, characterized in that a data processing system assigned to the service control station (SCP) and to the first subscriber (TNA) PCA, CTS) connecting data network (IPN) is provided that the data processing system is set up to the service control station (SCP) target data (ZDA), the information on the type and / or location of that of the terminal of the first subscriber (TNA) to which the Connection to be established, contained, to transmit, and that the service control station (SCP) is set up to generate the destination information (DDA) based on the destination data.