DE19940400A1 - Call connection method for telephone system uses additional information provided by calling subscriber for selective call charge reduction - Google Patents

Abstract

The call connection method provides a connection between 2 subscribers (A,B) of a telephone network (T) via a second connection network. A call set-up information is transferred from the first subscriber to the exchange (EX-VNB) of the connection network, for establishing a connection for transfer of additional information to the exchange, with corresponding call charge information logged in a call charge memory (ACC-MEM), before providing the connection to the second subscriber. The overall call charge is calculated by a call charging device (ACC) and reduced in dependence on the charge information logged in the call charge memory. An Independent claim for a call connection device for a telephone system is also included.

Description

FIELD OF THE INVENTION

The invention relates to a method and an apparatus for Mediation of calls between two with a first Communication network connected subscriber stations over at least one connectable to the first communication network second connection network. In particular, the invention relates the provision of additional information, for example Advertising messages, at a subscriber station of the first Communication network in the call-by-call switching process.

BACKGROUND OF THE INVENTION

Fig. 1 is a block diagram showing a typical prior art telecommunication system TELE comprising a first communication network T and with at least one connectable to the first communication network T connection network VN connected to the switching of calls between two with the first communication network T subscriber stations A, B via the connecting network VN. For example, the first communication network T is the fixed network of DEUTSCHEN TELEKOM, the connection network VN being any long-distance transmission network, for example the MOX network. The first network T can comprise a mobile radio network (such as D1, D2 in Germany) and / or a fixed network and the second network is generally a fixed connection network.

In the so-called call-by-call switching process, in which a subscriber can select a specific transmission network - in contrast to the so-called preselection process, in which a subscriber is assigned a fixed transmission network, the first subscriber station A sends a call setup message SETUP to the switching device EX-A of the first network T. The call setup message usually contains the subscriber number A-NO of subscriber station A and the call number B-NO of called subscriber station B. In addition, there is in the call setup message that is sent to the switching center EX-A , contain an identification of the desired connection network VN. As is well known, the user has several different long-distance transmission networks (connection networks) available today and therefore a special identifier is inserted into the call setup message, which identifies the special connection network VN. In Fig. 1 this is, for example, the number "01058", which identifies the connection network VN.

The connection network operators can often serve the users Offer cheaper fees to make calls especially to convey long distances. If the Exchange EX-A the specification in the Detects call setup message SETUP, so it forwards the Call setup message to the switching device VM des Interconnection network VN. If the switching device VM the Receives call setup message SETUP, so it recognizes the desired subscriber station B to be called on the basis of the Subscriber number B-NO. A switching facility EX-VNB the switching device VM then selects the appropriate path to the switching center EX-B, which with the Subscriber station B is connected.

If the subscriber takes off at subscriber station B, so builds a communication connection establishment device KV-M a communication link KV 'between the  Subscriber station A and subscriber station B via the first network T and the second network VN.

Typically, switching device VM includes one Billing facility AC and a fee memory ACC-MEM. The billing device ACC determines the cost of each via the EX-VNB switching center mediated call and stores the cost in the Charge memory ACC-MEM. Between the Connection network operator VNB and the operator of the first Network T exist billing convention, so that Subscriber A on his phone bill the cost of that Transfer of the call through the first network T and the Cost of placing the call through the Connection network VN will be charged. To transmits the ACC's billing device Connection network VN the incurred switching costs the operator of the first network T.

In such TELE telecommunication networks it already is customary to provide information to subscriber station A. which shows the rate at which the Mediation takes place through the connection network VN. This information is typically used during the Transfer call setup to the first subscriber station A.

The switching of calls over a first network T and a second network VN, referred to as the connection network, is called Call-by-call method, because the connection network VN the calling subscriber only costs on one call bills for call base, d. H. without any permanent basic fees. This means that the Subscriber using the connection network VN for switching used by calls, only the cost "per call" (call-by- Call) has to take over.  

STATE OF THE ART

From GB 2 206 265 A it is already known that in one Telecommunications network, which comprises only one network and thus no call-by-call procedure is carried out, one subscriber carries out one can choose a special access code that the subscriber can use an additional information device that connects to the Switching device of the network is coupled. The Users can then receive advertising messages from the special service be sent and the user can press a button to transmit further details of an advertising message to get. After the advertising is finished, the call is like a normal call to the Target subscriber station directed, but at a reduced Fee rate. By listening to specific Advertising messages saved costs can also save the user appear on his phone bill. The user can also be pressed by pressing certain buttons on the Telephone keypad certain lengths of the to be imported Choose advertising messages. The advertising messages can too be imported when the call is set up and thus both participants in the call hear the advertising message. This one described telecommunication system relates exclusively on one with one Communication network, d. H. not on a call-by-call Method.

From DE 197 18 323 A1 it is used to control the Fees in intelligent networks known at Recording of advertising messages to a participant to attract special attention by making a unpredictable time or at a specific time during or towards the end of an advertisement an acoustic or visual request to the participant, a specific or randomly assigned key or key sequence on the phone that the participant uses to confirm that he saw the commercial. Based on the  Key entry determines a billing facility (the network operator) fee reductions or free Time units. With the method described here is one controllable receipt of advertising in connection with reduced telephone or data transmission fees guaranteed. The procedures described here relate also not on a call-by-call procedure.

Furthermore, DE-197 09 937 A1 discloses the feeding of Messages or advertising in the call line from Subscriber stations of a telephone system, the call state of the calling subscriber and the call status of the called party Participants are determined and a message signal source switched to the line of the calling subscriber when the handset is lifted from the calling subscriber becomes. As soon as the called subscriber answers, the Message signal source switched off. This procedure for Feeding messages is also not a call directed by call procedure.

SUMMARY OF THE INVENTION

As above with reference to the prior art procedures are already explained for communication networks known that a recording of advertising messages to the allow calling subscribers, e.g. B. the intrusion a news source immediately after a caller receives the Phone answers. A recording of additional information in a telecommunications system, which is a first Communication network and at least a second connection network includes, but has not yet been specified.

The object of the present invention is therefore a Method, device and telecommunication system to be provided with a device that enables Participants with additional information or fee reductions on a call-by-call basis.  

This object is achieved by a method according to claim 1, 10, 28 solved. It also accomplishes this task Switching devices according to claim 17, 18 solved. This Task is also accomplished through a telecommunications system Claim 19 solved.

According to a first aspect of the invention (claim 1, 17) after sending a call setup message from a first one Subscriber station via the first network to the Switching device of the connection network one Communication link between the first Subscriber station and the switching center of the Connection network established. One with the Switching device coupled additional information The facility then transmits the additional information, especially advertising messages, to the first Subscriber station. The communication link is there via the first network, in particular the switching center of the first network, to the switching facility of the Connection network established. Building this Communication link for the additional information Transmission takes place in response to the sending of the Call setup message takes place before a connection between the switching device of the connection network and second subscriber station over the first network becomes. That is, when making a call-by-call call the additional information autonomously only about the built Transfer communication link. In one Fee storage is available when the additional information is transmitted a fee reduction, e.g. B. a fee timestamp, set. This "fee account" can be obtained through the Billing facility used to parts the charges for the call between the first and the second subscriber station when switching via the Take over or reduce the connection network. The Establishing the communication link in response to the Call setup message - without connecting to the  second subscriber station for triggering a call signal is produced - has the particular advantage that no costs for the transmission of the additional information incurred because during the call setup - before a connection to the second subscriber station - the operator of the first network the first subscriber no charges Invoices.

According to a second aspect of the invention (claims 17, 18) is an additional information transfer to Subscriber station that sent the call setup request has made when the communication link between the first and the second subscriber station have been terminated is. If, for example, the second subscriber station hangs up the second subscriber station is no longer included connected to the switching device of the connection network, however, a communication link between the first subscriber station and the switching center of the Connection network are maintained. About these Communication link it is possible the first Participant station even after the conversation with the second subscriber station additional information such as advertising etc. to transfer. Since the first network after completion of the Conversation between the first and second subscriber station again does not charge any costs, there is the same advantage as in the first aspect mentioned above, namely, that additional information transmission on a call basis (Call-by-call) and there are no fees, so that the user also has a discount account Can complete the call.

According to a third aspect of the invention (claim 28) one or more charge memories in the second network available in which fee reduction information in advance are saved. The call setup message is sent via a Switching device of the first network to the Switching device of the also in the call setup  Message specified second network sent, the Switching device the information regarding the specified fee storage extracted. When a Communication link between the first Subscriber station and the second subscriber station via the Switching devices of the first or second network is established and a call is in progress, determines one Second Network's Billing Facility Total cost of switching the call between the first and second subscriber station. Due to the Information regarding the relevant fee storage, contained in the call setup message reduces the Billing facility the total cost by Amount of the fee reduction information in the specified fee storage corresponds. Due to the in The information inserted into the call setup message can thus the participant at the first participant station consciously Choose fee reduction to get the total cost to reduce. It is also the second aspect of the invention possible that the subscriber at the first subscriber station also enters a subscriber identification, the Fee settlement facility only then the cost reduction carries out if the entered participant identification with an identification assigned to the charge memory matches. Alternatively, it is the second aspect of the Invention also possible that a subscriber identification Setting up the second network is the caller's number Participant recognizes from the call setup message and this from CLI compares information with an identification that in the respective fee storage or their Fee reductions is assigned.

Further advantageous embodiments and improvements of Invention are specified in the subclaims. It will noted that the invention also embodies comprises, which consist of features contained in the description and the claims are listed separately. Below is  the invention based on some embodiments Reference to the drawings explained in more detail.

BRIEF DESCRIPTION OF THE DRAWINGS

The drawings show:

Figure 1 is an overview of a telecommunication system TELE of the prior art with a first network and a connection network T VN to the switching of calls between two subscriber stations A, B according to the prior art; FIG.

FIG. 2 shows an overview similar to that in FIG. 1 with a switching device VM according to the invention;

Fig. 3 is a flowchart of the method for switching of calls according to the invention;

Fig. 4 shows the contents of an additional information memory AD-MEM and the charge accumulator ACC-MEM according to another embodiment of the invention; and

Fig. 5 shows a method for transmission of additional information according to a second embodiment of the invention.

Throughout the drawings, the same designation Reference numerals same or similar parts. Below is the invention with reference to the drawings explained.

Principle of the invention

Fig. 2 shows an overview of a telecommunications system TELE with a first communication network T, z. B. Deutsche Telekom, and at least one connection network VN connectable to the first communication network T for switching calls between the two subscriber stations A, B connected to the first communication network T via the connection network VN. The connection network VN comprises a switching device VM with the switching device EX-VNB for switching calls which are transferred from the first communication network to the connection network, with a charging device ACC for charging the calls which are switched over the connection network, with a charge memory ACC-MEM for storing tariff discounts, and with a communication connection establishment device for establishing communication connections between subscriber station A and switching device EX-VNB or between subscriber station A and subscriber station B.

The switching device VM further comprises one Additional information device WIM for the transmission of Additional information and an additional information store AD MEM for storing at least one additional piece of information. At This additional information can be Trade advertising information, announcement messages, etc.

As indicated in particular with the communication connection KV, according to the invention, the communication connection establishment device KV-M establishes a communication connection KV between the first subscriber station A and the additional information device WIM. As shown in FIG. 2 with dashed lines, this communication connection KV is only established between A and WIM, the communication connection KV not reaching the subscriber station B at the same time.

The communication link KV can be called by call Method according to a first embodiment of the invention (described below) when you set up a call  be established before the SETUP call setup message arrives subscriber station B is routed.

According to a second embodiment of the invention, the Maintain communication link KV after at Completion of a phone call between the Subscriber station A and subscriber station B the Has hung up subscriber at subscriber station B.

In the call-by-call process, i.e. H. if two networks T, VN on participate in the mediation of calls and the subscriber certain second network VN active from several second networks (e.g. by dialing a special number 0800 (toll free Number) -123456 (dialed number of the second network)) can, namely, the operator of the first network T (e.g. the Deutsche Telekom) no charges as long as the call is not actually transmitted, d. H. As long as not actually a communication link KV 'between the Subscriber station A and subscriber station B over both Networks T, VN has been established. That is, whenever the communication link KV is established and thus one Communication with subscriber station A is possible no fees at that time transmits the additional information device WIM one in the Additional information memory AD-MEM stored Additional information to subscriber station A.

Whenever additional information from the Additional information device WIM to subscriber A via the communication link KV has been transmitted in the ACC-MEM fee storage a fee reduction Information set that the additional information specifically is assigned. For example, additional information "COCA-COLA advertising; length: 2 minutes" a Fee reduction information in the form of a time stamp "5 Minutes ". If the billing Set up the ACC fees for the participant of the  Subscriber station A, which has received the additional information, calculated, it takes into account the fee reduction Information in the charge memory ACC-MEM. For example reduces the billing facility for the Transfer of the call via the connection network VN accrued total fee amount by the fee amount that corresponds to the fee reduction information. The Discount information can be a specific one Span of time, or even a certain reduced Billing rate. This can also be done several times in a row happen, d. H. every time the communication link KV is established and additional information has been transmitted , further fee reduction information is provided existing fee reduction information in the Charge memory ACC-MEM added or added so that the subscriber of subscriber station A by repeated Listen to additional information Quota reduction, e.g. B. set up a time account can. This can also be actively influenced by the first participant become, d. H. if a connection KV between the first Participants and the additional information facility WIM is set up, the participant (automatically or in Responding to a confirmation message from the first Subscriber station on a request message from the Setup WIM whether additional information is imported additional information and thus the Charge account for the current call (or later) Calls). The participant can then actively one Request message for the import of further Send additional information, e.g. B. by pressing the "#" or the "*" key on the phone while the first Additional information is currently being transmitted or after it The End. As will be explained below, this is in principle also during the ongoing call with B possible.  

The built-up fee reduction in the ACC-MEM memory can directly for billing the call between the two Subscriber stations A, B are charged if the Additional information is imported when establishing a call. The Billing facility can then be part of the Assume the costs for the mediated call and the Operator of the communication network T a smaller amount invoice so that on the invoice for the Participants of subscriber station A a smaller amount for the transfer of the call over the connection network VN in Invoice is issued. The "Discount Accounts" of However, participants can also go to the next one Call setup phase are saved, and the subscriber at be notified of the next call setup, e.g. B. at one Call setup, a message can be dubbed first, such as "Your current time account is 5 minutes. Want You get further additional messages recorded "? In response to such a request message, the User sent back a confirmation message Show whether additional information is being imported should. The current fee reduction amount may vary Participants of course also in the second embodiment of the Invention appear, namely after the second Has hung up the participant.

If after importing the additional information z. B. 3 Free minutes have been built up in the fee memory, so the switching device of the second network VN according to FIG Minutes either interrupt the conversation with B or on the Toggle normal full billing. If that Conversation ends after 2 minutes, so it can Remaining free charge for the next call to Storage can remain saved or discarded if there is e.g. B. should only be used for the current call.  

FIRST EMBODIMENT

Fig. 3 shows a flow chart of the method according to the invention for the provision of additional information in the call-by-call procedure during call setup. In the call-by-call method, a call setup message SETUP is sent in step S1 from a first subscriber station A via a switching device EX-A of the first network T to a switching device EX-VNB of a second network VNB specified in the call setup message SETUP . That is, the user specifies in the call setup message SETUP the desired connection network VN, which is to be used for the transfer of the call forwarded by the exchange EX-A. According to the first embodiment of the invention, this call setup message SETUP is not sent to subscriber station B via the switching device EX-B, but is held in the switching device EX-VNB and in response, the communication connection setup device KV-M installs in step S2 Communication link KV between the switching device or the additional information device WIM and the subscriber A. In step S3, at least one piece of additional information is then transmitted via the expanded communication link by the additional information device coupled to the switching device EX-VNB and, at the same time as the transmission, one of the fee reduction information associated with the transmitted additional information in the fee memory ACC-MEM of the fee accounting device ACC of the second network VNB set.

The additional information can automatically be sent to the Subscriber station A are transmitted as soon as the Communication connection KV is established. As above explained, however, it is also possible that after building the Communication link KV first an inquiry message the first subscriber station A is transmitted, the  Participant at subscriber station A requests one Confirmation message to the additional service facility WIM to send back. As explained above, in the Request message other than a request to return the Confirmation message, for example by entering a certain key press or a certain key sequence, including those already available to the participant stored in the charge memory ACC-MEM Discount information is then transmitted e.g. B. on a display device of subscriber station A can be displayed. In the request message, the Participants z. B. be greeted with the following message: "Hello, you are now with the additional service facility of the UN network. If you press the # key, so you can listen to additional information that is currently 2 Minutes into your fee account. Press the 1- Button if you do not want to hear any additional information.

In the confirmation message sent by the first Participant station A is sent back, the participant the subscriber station A also indicate that he is immediately with wants to be connected to a call center. The communication then takes place first between the call center and the Participant station A instead, the additional information only after completing the connection with the call center is transmitted. It should also be noted that the Subscriber station A also receives an interrupt message at any time during the import of the additional information can send e.g. B. also during the transfer of The participant of the Switching device VM signal that he is with a Call center wants to be connected or that the Would like to have sent product information. Furthermore, the Switching device VM the communication link KV build up automatically, d. H. in response to one conventional call setup message, or the subscriber can there is already a special one in the call setup message SETUP  Enter the 0800 number (free number) so that the Connection directly to the additional information facility WIM of the connection network VN (e.g. 0800 (free number) -77777 (for the additional information Establishment of the second network)) That is, the participant can also consciously call the additional information facility, only by importing additional information (e.g. Advertising messages) his time account in the fee memory replenish.

In the normal case, namely when the call setup message SETUP also the B number of subscriber station B for one contains the desired call setup to subscriber station B after completion of the additional information transfer in step S3 the communication link KV 'between the first Subscriber station and the second subscriber station B via the switching device EX-A, the switching device EX-VNB and the exchange EX-B in step S4 built up. Alternatively, the first subscriber station is after prompted the import of the additional information Enter the number of the B subscriber - similar to the normal call-by-call procedure, in which only the network number of the second network is selected, the subscriber with the second network is connected and only then the subscriber B enters the number.

During the precautionary call on the Communication link KV 'determines the ACC charge facility for the call accruing fees and offset these with the in Fee storage stored fee reduction Information there based on a transfer of Additional information has been saved. For example, the ACC accounting facility a settlement of the first 5 minutes of the call over the communication link Do not bill KV if the fee reduction information a time account of e.g. B. 5 minutes. Only the sixth  Minute will then be billed (or the call will canceled), and z. B. the operator of the first network T for Billing submitted. The transmission of the total amount or the reduced amount can be after the completion of the Individual call or at the end of the month to Switching device EX-A of the first network T take place.

Furthermore, it is also possible, as indicated with step S31 in FIG. 3, that after the end of the additional information transmission in step SR3 the subscriber transmits a new confirmation message to the additional information device, e.g. B. in response to a further request message from the additional information device WIM. This means that after each completion (or even during the transmission) of an additional information transmission, the subscriber A can be requested again to request the transmission of further additional information. Even without a request from the network to transmit a confirmation message, the first subscriber A can actively send a request message to the network for the import of further additional information.

It is also possible that the user is active in the Intervening transmission of additional information. For example the user can also during the transfer of the Additional information e.g. B. when broadcast an advertisement a specific key on subscriber station A press to transfer the current To end additional information and thus the transmission of a trigger another request message or display it, that now a call setup to subscriber station B too has taken place. In this case, the additional information WIN set up a time counter that integrated the Fee reduction in the ACC-MEM fee memory proportional at the time over which the participant A the Listened to the commercial. So can participant A too then if he z. B. only hears half of the commercial  Build up a certain time quota in the fee memory. In addition, the time quota acquired does not necessarily have to be be identical or directly proportional to the listening time (i.e. a listening time of 2 minutes results in exactly 2 or 2 * x Free minutes). Rather, it is also possible that a non- linear relationship exists, e.g. B. the longer the participant listens, the faster his fee account is set up.

As will be explained below, subscriber A is also able, if several additional items of information can be offered, to switch over to other additional items of information also during the transfer, which under certain circumstances enables a higher time quota. In FIG. 4, the content of an additional information memory AD-MEM with several additional information AD1, AD2. , , Adn. , , ADN with associated fee reduction information RED1, RED2. , , REDn. , , REDN shown. As shown, different time quotas or fee reductions can be built up by the transmission or selection of different additional information Adn.

For example, after establishing the communication connection KV in step S2 in FIG. 3, the subscriber of subscriber station A is first sent a list of the additional information stored in the additional information memory with its associated fee reduction information in an inquiry message. This can be done acoustically at subscriber station A via speech or also via a display at subscriber station A. In connection with the transmission of the list shown in FIG. 4 in the additional information memory AD-MEM, the subscriber A, as explained above, can additionally be transferred information about his current time account, ie the current free time REDn in the charge memory ACC-MEM.

From the subscriber station can then Communication link KV in the confirmation message Selection signals are transmitted that one or more of the Show additional information displayed in the list. The means that subscriber A can only transmit one Additional information e.g. B. select AD2 or several z. B. Select AD1, ADn and ADN. If several are selected, then these are imported one after the other to subscriber A, or after each further transmission of a Inquiry message that the subscriber must confirm. There in the list is assigned to each additional information Reduction information REDn can be displayed the subscriber A certain additional information and especially select certain fee reductions.

As shown in FIG. 4, "accounts" for the respective subscribers A, B can be kept in the charge memory ACC-MEM. That is, the additional information device WIN can associate the call setup message with a specific subscriber A, B, etc. on the basis of the A number of the subscriber station A contained in the call setup message SETUP. If the participant z. B. over the period of a month before the total billing takes place over the network T, has listened to the additional information AD1 (twice in FIG. 4) a number of times, a time quota of ten minutes is built up. Equivalently, subscriber A has listened to the information ADN five times over a period of time, so that a time quota of forty-five minutes arises. The subscriber A can also send a query message at any time via the time account to the additional information device WIN, which then sends the currently available fee reduction information REDn as a reply message, e.g. B. in Fig. 4 fifty five minutes, to subscriber A.

Furthermore, it is possible that after each transmission of additional information, the list shown in FIG. 4 is transmitted to the subscriber again, so that a new selection can be made.

As further shown in FIG. 4, information can be stored separately in the charge memory ADD-MEM for the individual information AD1, ADN, which shows how often the subscriber has already listened to the specific additional information. A dynamic adjustment of the discounts is also possible, e.g. B. if the additional information device WIM determines that the subscriber A listens to certain additional information very often, the time quotas or reductions RED1, REDN can also be increased depending on the number of transmissions of the information already carried out. If it is the additional information such. B. is advertising information, this can show the sponsor of the advertising information an increased interest in his products, so that he will decide to want to win this participant or customer more, so that the time savings or discounts can be increased. It is also possible that the additional information device WEM transmits information to the individual sponsors separately, for. B. about how often a particular subscriber has listened to his additional information or advertising message.

Other dynamizations of those offered to the participants Additional information and its associated Fee reductions are possible. Since in the call setup Message SETUP also the A number of the calling Subscriber station is transmitted, the Additional information facility certain lists of additional information offered depending on the A- Transfer the number back to the calling subscriber station. For example, when it is clear when the contract is concluded that subscriber station A is a private connection acts, the additional information facility BEM would certain list of additional information and related  Choose fee reductions specifically for a private Participants are tailored. On the other hand, if it is is a business connection, so the Additional information facility a specific list of Select additional information about the transmission that is specific to the Business connection are adjusted.

In addition, SETUP can of course be used in the call setup message transmit the B number of the subscriber B to be called become. Alternatively, the subscriber initially only selects the network and gives the B number after building the Communication link KV (or possibly only after the transfer of information from a wengist). The Additional information facility can be individual Additional information or lists of additional information too Dial depending on the B number. So for Example advertising information can be selected depending on from the destination country that was selected via the B number. So the length of the free minutes can be closer if that Conversation to America would be. The selection of those to be transferred Additional information can also depend on the time of day, season etc. depend. For example, in the evenings certain additional stations other specific information are offered as daytime, e.g. B. only during the day Detergent advertising and evening beverage advertising or Football advertising.

The type of additional information offered can also vary from Depend on the type of call. In the call setup message SETUP In fact, intelligent networks nowadays also displayed, e.g. B. a fax transmission, a data transmission or a voice transmission. For example, if a FAX Transmission is displayed, the additional information Setup decide special promotional information to select new products for Obtain fax machines. Furthermore, in the call Message may also contain information about which one  Type of subscriber station is being used. For example it can also be the case with subscriber station A. Mobile device act so that special advertising information can be selected and transmitted in the mobile radio area. All of the above options can also be combined be used so that a selection z. B. related with the A number, the B number and the time of day becomes.

It is also possible that the additional information Set up statistics on those from the calling Subscriber station selected additional information created. For example, if the statistics indicate that a particular Subscriber station always a certain type of Selects additional information, e.g. B. Additional information one specific group related to automotive advertising, so the additional information device can also automatically Information about it to a product information center then submit based on the A number and the address product information assigned to this number can send this participant. These statistics can also used to determine if there is any is useful to a particular participant in the future Offer additional information. If for example it is found that a particular participant is extreme rarely wants to get additional information dubbed or a transmission of additional information always after half the recording is canceled by an active intervention, so can be made dynamic, so that z. B. for the achievable time quotas for these specific participants be drastically reduced. Such statistics are suitable excellent for the analysis of the product interest and the Customer behavior in the marketing area.  

SECOND EMBODIMENT

FIG. 5 shows a second embodiment of the method for switching calls or for transmitting additional information according to FIG. 2. In step S1 ', a communication connection KV' is established between the first subscriber station and the user in response to a call setup message from subscriber A. second subscriber station A, B via the switching device EX-VNB of the connection network VM and via the switching devices EX-A, EX-B of the two networks. At this point, subscriber station B has picked up the receiver and a telephone call is taking place between A, B. In step S2 'the subscriber station B has hung up. In this case, however, the communication link KV 'is also not immediately disconnected between the switching device EX-VNB and the subscriber station A, but since the subscriber station A has previously participated in the call, a communication link KV is established between the first subscriber station A and the switching device EX -VNB established, for example, by maintaining the part of the communication link KV between A and EX-VNB, or by establishing a new communication link KV '.

In step S3 ', at least one piece of additional information is transmitted via the established communication connection KV from the additional information device and the corresponding assigned fee reduction information REDn is set in the fee memory, as in the first embodiment in FIG. 3 in step S3. After the additional information transmission in step S3 ', the communication link KV is now also interrupted in step S4' and the billing for determining the total cost of the call reduced via the currently available fee reduction information is determined in step S5 '.

As indicated by step S31 'in FIG. 5, which corresponds to step S31' in FIG. 3, it is of course also possible to transmit a plurality of additional information, including lists of additional information which the subscriber can select again, just as in the first embodiment. It should therefore be pointed out that all of the features mentioned above relating to the first embodiment can also be used in the additional information transmission in the second embodiment. The difference between the first and the second embodiment is that in the second embodiment the additional information transmission takes place at the end of the call, ie if the subscriber B has already hung up. Thus, all alternatives for the additional information transmission, which are mentioned in the first embodiment, can also be used here.

It is advantageous for subscriber A after completing the Communication link KV a request message send whether additional information should be transmitted, the additional information is only transmitted if the first subscriber station A sends a confirmation message the additional information device transmits WIM. This means, after the participant has hung up B, the Communication link KV 'immediately an inquiry message sent to subscriber A's attention about it awaken that additional information transmissions and thus the Set up a time account about the fee reductions now is also possible. Additional information can also be saved on End of a conversation with the participant who previously B has called, transmitted. It takes advantage of the fact that In principle, subscriber A still uses the connection network VN is connected when subscriber B has already hung up Has.

It is also possible that the participant A during the Conversation, d. H. if the communication link KV ' a short message is sent that  indicates that additional information at the end of the call can be transferred. Of course, this message should not be long to make the conversation between A, B unnecessary to interrupt for a long time. For example, this can also be done via an acoustic or visual display in the Subscriber station A happen so that not necessarily the voice transmission must be interrupted.

According to the second embodiment, when the Additional information after the call between A and B are transmitted and then a fee statement in of the billing device ACC then takes place can already have time accounts for a future call that takes place later. The However, fee reductions can also be used to the cost of the call already made reduce. This total cost will then be the same as the first Embodiment to the switching center EX-A, more precisely said to the network operator of the first network T, transmitted.

Of course, also in the second embodiment Contents of the fee reductions (e.g. the time account) and / or the additional information lists for selection by the Transfer subscriber A to subscriber station A at any time become. For example, it is advantageous that the Fee reduction account to subscriber station A too is transmitted during a call. The subscriber station A can therefore at any time the current discounts check. This can also be done in an active way e.g. B. by subscriber station A a separate one Request message to the additional information facility WIM sends. This can happen when you set up the call after hanging up the Participant station B and happen during the call.  

THIRD EMBODIMENT

Another embodiment of the invention relates to a Method in which the first subscriber station A in the Call setup message not just the number of the second Subscriber station B and information for the specification of the desired second network VN, but also one Request information that a transfer of the minimum a fee reduction associated with additional information Request information. That is, when choosing the second Network will not automatically transfer the Additional information after receipt of the call setup message sent in the switching center of the second network, but this is only done by entering another Parameters in the call setup message. For example the subscriber after selecting the second network for the Transfer the call to a specific "*" or "#" key press, which indicates to the second network that based on the Selection of the second network additional information imported and a fee reduction in the fee storage to be determined accordingly.

This allows the first participant in the first Participant station A is aware of the recording of the Trigger advertising information as a compulsory recording of advertising information each time the second network is selected can be perceived as disturbing for some participants. It it is also possible that the recording or Transmission of advertising information depends on the time of day is made, e.g. B. during the day until 6 p.m. none Transmission of advertising information when selecting the second Network, whereas automatically after 6 p.m. such transfer takes place. Preferably the Participants with the specific key press, however Transfer and set up the time account itself.  

As already mentioned above, the import of Additional information at any time after the Communication link between the first Participant station and the second participant station possible. That is, even during an ongoing call the first participant press a specific key and the Request the import of additional information.

As already discussed above, it is also possible that the call building message directly to the Additional information facility BIM is directed, namely then if the additional information device itself one Number is assigned. Thus, the participant in the consciously decide first subscriber station A yourself, similarly as with the request with the keystroke that he the Import of advertising information from the second network (from the Additional Information Facility) instead of using the choice of the second network merely indicates that his call to be transmitted over the second network.

As explained above, pressing certain keys in response to the request night are displayed that a certain from the second network to Additional information provided can be imported should. For example, pressing the "1" key could Be ancient advertising, the keystroke "2" Coca-Cola ads and pressing the "3" key calls immediately with the second participant B without any recording of Display additional information. Thus, the participant has everyone Time to choose whether information should be transferred or Not.

FOURTH EMBODIMENT

Another embodiment of a Described method of the invention, with the participants of the first subscriber station discounts on a  Call-by-call basis can be made available. In In this case, the first participant specifies in the Call setup message SETUP from the first subscriber station A is the number of the second subscriber station B and Information that is not only the second desired network VN for arranging the call, but also one or more with the exchange EX-VNB of the second network VN connected charge memory ACC-MEM specified. In these Fee storage is already a fee reduction saved by certain sponsors. For example it is possible that a newspaper publisher has a contract with the Negotiates operator of the second network, one certain newspaper publishing fee storage a certain Identification number is assigned in the newspapers of the newspaper publisher can be advertised.

This identification of the fee memory can be found in newspapers can be advertised and can therefore by a participant of the first subscriber station A in the call setup message SETUP be installed so that this participant deliberately one certain billing memory by means of the Can specify call setup message. If so Communication link between the first Subscriber station and the second subscriber station set up and the switch is the specific one Information such as the identification of the charge memory extracted the call setup message, so the Billing facility the total cost of that Mediation of the call between the first and second Participant station around the respective sponsored by the sponsor Reduce assigned fee reduction information.

With this procedure too, the participant is indirectly initially advertising or additional information is offered, namely, for example, through the advertisement in the newspaper, the is associated with advertising content. The participant can thus consciously use certain fee accounts with  are provided with a specific identification that the Must include participants in the call setup message. This can happen, for example, that phone cards in Magazines are incorporated, being on the card certain dial-in numbers (0800 or 0800 & 5555 (for the Additional information device or the fee memory) and a specific PIN number are included. So that's one defined a number of free minutes of telephone calls, which are stored in the fee memory.

That is, in addition to the information that the Fee participant identified, gives the participant additionally an identification, e.g. B. a PIN number that shows the authorization.

On the other hand, in the fourth embodiment (and also in the other embodiments) also possible that the Switching device EX-VNB of the connection network VN one Subscriber identification device includes. The Subscriber identification device evaluates the information in the call setup message SETUP to the phone numbers of the outgoing call. In this case the Participant of the first subscriber station A who made the call initiates, do not enter a PIN, but the Identification of the calling subscriber is, for. B. as Calling Line Identification (CLI) certainly. Then the identified participant identification (Telephone number of the outgoing call) with the for everyone Fee storage or for every fee reduction provided identifications (numbers) compared and if they match, then it is possible that the for the Call total costs incurred by an amount accordingly is reduced to the respective fee reduction.

It is related to subscriber identification also possible that further identifications from the first Participants are entered when the first review,  e.g. B. the CLI check fails, d. H. if the first subscriber due to his CLI in the call setup Message is not recognized as an authorized caller. If the subscriber identification device so the Receives call setup message, it first compares the CLI information in the call setup message with the im second network registered CLI information (numbers). If the first participant is not recognized as authorized, so the subscriber identification device sends an about it Message back to the first subscriber station, e.g. B. as Voice message "Participant was not authorized for Discounts recognized - give another one Identification that allows you to be recognized as justified " or in the form of such an advertisement on the Subscriber station. Then from the first subscriber station sent another identification message, the one further identifier, e.g. B. the PIN and / or another code and / or contains one or more further telephone numbers. For example, the first participant can have several valid phone numbers in the second network as allowed for Have saved discounts. The The subscriber identification device then checks this newly transmitted identification (s) with those in the second network existing and registered as approved identifications and releases fee reductions if there is a match is detected. It is also possible that this procedure is repeated several times until from the first A subscriber station is sent a message that a Contains identifier that is recognized as valid. This Detection procedure can be in all embodiments that are used here, not only in the Examples described here.

An example should explain the procedure. The sponsor decides, for example, that subscribers to a newspaper free telephone minutes should be made available, e.g. B. Subscribers in a specific city. The sponsor  concludes a contract with the operator of the second network from, the network operator to the sponsor the respective Identification codes (phone numbers) of allowed Storage of fees or fee reductions in the second network communicates. The sponsor pays z. B. these free in advance Minutes by phone. The identification codes or phone numbers will then appear in the newspaper along with one Additional information or advertising information printed and sent to Subscribers distributed in the city.

If a subscriber in the city calls the number of the Fee storage or the fee reductions, d. H. the Identification codes of the charge memory, with in the Call setup message when initiating a call installed, the subscriber identification device recognizes the subscriber or participant as for fee reductions authorized because the subscriber identification facility on Based on the evaluation of the phone number, that it is a participant from the particular city acts, e.g. B. 089 for Munich, the 089 numbers in the Additional information facility or in the fee memories as a participant entitled to the fee reductions be recognized.

So that the thing does not become too expensive, it is also possible that the use or the call of the fee storage with the number published in the newspaper for certain Times of the day is blocked, e.g. B. that the subscribers to For example, only reduce the number of minutes in the evening can.

In the third embodiment, the subscriber must therefore Second network number and any identification specify the second network or the switching device of which specify for the transfer of the call. In addition of course the subscriber gives the number of the called party Participant. The participant also gives one  Code, e.g. B. the identification code for a Fee reduction or for a fee storage, so that he gets free phone minutes from a fee reduction. The subscriber's authorization can be obtained via his phone number be checked, which is determined from the call setup message can be. Alternatively, the participant gives a PIN number one that was given to him, for example, by the advertisement in the newspaper together with the identification code of the fee reduction was communicated.

Some examples are intended to explain the fourth embodiment.

Virtual coupon

A telephone card is incorporated into a magazine (Impression, stapler, glue, insert). The phone card contains a dial-in number (0800 number) of the second network and each an individual PIN. So that's a certain number free phone minutes defined (the dial-in number corresponds to a certain fee storage). This is called called a virtual coupon. The newspaper has it Possibility of using this coupon as an "add-on" for advertising of your advertisers. The advantage over that "Print Coupon" is that the customer is not concerned with Cut out, stick on, search for a stamp, to the mailbox must struggle to run. In principle, it would be possible that a subscriber agrees by returning a printed one Coupons identified and then in the fee storage free phone minutes can be defined in advance.

With the virtual coupon, for example, he presses on his Telephone a certain key when establishing a call, e.g. B. the Numeric key "*" or "2" what about the second network it is recognized that the subscriber not only the call via the second network would like to have mediated, but that it should be Want to set up a fee-free account. By pressing the The subscriber can also use the number key with a voice mail  Box or be connected to a call center where its Address is recorded.

Subscriber acquisition

As already explained above, a subscriber Advertising marked with the note: every new subscriber receives 1 hour free as a present Telephone calls, sponsored by the newspaper or by one Sponsor of the newspaper. If a subscriber has the certain number dials, he becomes friendly as a new one from an announcement Subscriber greets and it will give him the certain free Phone minutes provided. The new subscriber can again asked to attract more subscribers and if he then identifies another Subscribers, e.g. B. using a key on the phone, so he gets more free minutes of telephone.

Competitions

A participant identification that identifies the participant for Fee reductions identified as justified can also be passed on to the participant after certain Contests with the participant were processed. To the Example can be by phone between the participant and one Call center to be processed and as a competition The caller receives a reward free telephone minutes. The Participants are then pre-determined and with a menu stored 0800 numbers may be communicated with a PIN. If the participant has won, he can with him communicated PIN (or based on a recognition of its Call number) free of charge. Such competitions may also include puzzle games in which the participant first figure out a solution with a call center must before the number is communicated to him.  

Gradation of the free minutes of telephone

It is also possible that, for example, a 0800 number is published in a magazine, with which it is announced that, for example, the first 10,000 calls are given 5 free minutes of phone calls and the next 15,000, 20,000, etc. callers are given free calls for X minutes. This can be limited to certain locations or districts by recognizing the number of participants.

In this case, the exchange EX-VNB keeps after the fee storage has been replenished (and it possibly the permitted phone numbers are communicated were), the number of calls and there Fee reductions for the first 10,000 in the form of 5 Minutes free, for another 15,000 calls only 2 minutes etc. Thus, by evaluating the number of callers flexible fee reductions can be designed.

Market research tool

It is also possible that a time account is set up interactively after the participant has the additional information device directly via a z. B. has called a number published in a newspaper. This means that the additional information device can list certain questions to the calling subscriber either by recording an announcement as additional information or by displaying them on the display of the calling subscriber station, which the calling subscriber must answer by pressing certain keys. Participant chooses z. For example, an 0800 number, followed by an announcement: How do you like our newspaper? Press 1 - for very good, 2 - for good and 4 - for sufficient. Every time a question is answered, the time account is z. B. increased 3 minutes. A fee account can thus be set up through an interactive design of the sponsorship service.

This interactive procedure can be done by using a Request message from the switching device to the Participants and by sending back a confirmation message carried out by the subscriber to the switching facility become.

OTHER EMBODIMENTS

As above with reference to the fourth Embodiment explained, it is in the present Invention also possible, the telephone computer or the Additional information facility or the charge storage with the assigned fee reduction information or to dial directly during call setup, if e.g. B. an identification built into a call setup message which has a certain fee reduction or a certain fee storage that was previously approved negotiated, is specified.

As with the previous example "Instrument of Market research ", however, the first to third embodiment with the fourth embodiment combine. That means the participant gives in the Call setup message the number of the destination subscriber B and / or the number of the connection network and / or the number an approved fee-free account. If the Switching device or the additional information Facility recognizes that a subscriber is using the call who wants to carry out fee reductions. Unless already z. B. in the newspaper with the advertisement of Free phone number associated with an advertising ad in this case it is possible that after the direct selection the additional information facility in the call setup Message immediately additional information or advertising information practically in response to the selection of the Fee reductions will be sent.  

The difference from the first embodiment is that in the first embodiment automatically when the call is set up over the second network, e.g. B. when selecting the second network for the transfer of the call, the call setup always to the Additional information device is sent and only then an interactive procedure with the calling party is carried out to record advertising information perform. In the above-mentioned embodiment when dialing directly, it is not just the second one Network, but also the additional information facility or the charge storage of the second network, already at Call setup clear that the calling party a Additional information should be imported.

INDUSTRIAL APPLICABILITY

The method and device for transmitting Additional information at subscriber stations Communication network connected to a connection network according to the invention can be in many Telecommunications systems are used. It can first communication station network a cellular network and / or include a fixed network and the second network can be a Connection landline, e.g. B. be a long-distance transmission network. The subscriber stations A, B can thus be Act mobile radio stations or fixed network stations. How mentioned above, the invention is not based on the structure limited by conversation calls, e.g. B. the additional information Transmission can also take place during a data or fax call be transmitted.

It should also be noted that those mentioned here Company names, e.g. B. "Coca-Cola", "BMW" or "BAYWA" are registered trademarks of these companies. The invention can can also be implemented differently than in particular above described. Therefore, numerous modifications and Changes for an average specialist based on the  previous description under the claims below within the scope of the invention. In particular includes the invention also embodiments with features that in the claims and listed separately in the description were.

Reference signs in the claims serve the better Understand and do not narrow the scope of the invention on.

Claims (34)

1. A method for switching calls between two subscriber stations (A, B) connected to a first communication network (T) via at least one second connection network (VNT) that can be connected to the first communication network (T), with the following steps:

• a) Sending (S1) a call setup message (SETUP) from a first subscriber station (A) via a switching device (EX-A) of the first network (T) to a switching device (EX-VNB) one in the call setup message (SETUP ) specified second network (VNT);
• b) establishing (S2) a communication link (KV) between the first subscriber station (A) and the switching device (EX-VNB) of the second network (VNT) via the switching device (EX-A) of the first network (Telekom);
• c) transmission (S3) of at least one additional information (ADn) via the established communication connection (KV) from an additional information device (WIM) coupled to the second switching device (EX-VNB) and setting of a fee reduction information associated with the additional information (ADn) (REDn) in a charge memory (ACC-MEM) of a charge accounting device (ACC) of the second network (VNT);
• d) after completion of the additional information transmission, establishing (S4) a communication link (KV ') between the first subscriber station (A) and the second subscriber station (B) via the switching device (EX-A) of the first network (T) and the switching device (EX -VNB) of the second network (VNB); and where
• e) the billing device (ACC) of the second network (VNT) determines total costs for the switching of calls from the first subscriber station (A) via the second network (VNT) (S5) and the total costs by an amount corresponding to that in the fee memory (ACC-MEM) set fee reduction information (REDn) reduced.

2. The method according to claim 1, characterized in that the second billing device (ACC) Network (VNT) the reduced amount to the Networking device (EX-A) of the first network (T) or to the subscriber (TA) of the subscriber station (A) retransmitted. 3. The method according to claim 1, characterized in that a lot of additional information (ADn) with respective assigned fee reduction Information (REDn) in an additional information store (AD-MEM) are stored and sent to the first Subscriber station (A) several additional information (ADn) transmitted over the communication link (KV) be the total cost by an amount according to the multiple fee reduction set Information (REDn) can be reduced. 4. The method according to claim 1, characterized in that  after establishing the communication connection (KV) one Request message to the first subscriber station (A) is transmitted and the additional information only then is transmitted if at the additional information Facility (WFM) a confirmation message from the first subscriber station (A) is received. 5. The method according to claim 3 and 4, characterized in that in the request message a list of the im Additional information memory stored Additional information with their assigned Fee reduction information is transmitted first subscriber station (A) one or more of the Select additional information and in the Confirmation message an ad about the selection the additional information device is sent back. 6. The method according to claim 3 and 4, characterized in that after the end of the transmission of a respective Additional information a new confirmation message to the Additional information device is transmitted (S31). 7. The method according to claim 5 and 6, characterized in that after the end of each transmission of a respective one Additional information to the first subscriber station (A) Request message with the list is transmitted and in the confirmation message, an advertisement for each or several selected new ones to be transferred Additional information to the additional information Facility to be transferred. 8. The method according to claim 1, characterized in that  the additional information and / or the additional information associated fee reduction information (REDn) in the fee memory depending on the number of first subscriber station (A-NO) and / or the number of the second subscriber station (B-NO) and / or the time of day and / or the type of call (SPEECH, DATA, FAX) and / or the type of subscriber station used (A) are changeable. 9. The method according to claim 1, characterized in that after completing the call between the first and second Subscriber station (A, B) a communication link between the first subscriber station (A) and the Switching device (EX-VNB) of the second network is maintained (S2 ') and at least one more Additional information about the established communication connection (KV) from the additional information facility (WIM) to the first subscriber station (A) (S3 ') and one of these additional pieces of information (ADn) associated fee reduction information (REDn) in the charge memory (ACC-MEM) is set. 10. Method for switching calls between two subscriber stations (A, B) connected to a first communication network (T) via at least one second connection network (VNT) that can be connected to the first communication network (T), with the following steps:

• a) Establishing (S1 ') a communication link (KV') between the first subscriber station (A) and the second subscriber station (B) via the switching device (EX-VNB) of the second network (VNT) and via the switching device (EX-A) the first network (T) in response to a call setup message (SETUP) sent by the first subscriber station (A);
• b) after completion of the call, maintaining (S2 ') a communication link (KV) between the first subscriber station (A) and the switching center (EX-VNB) of the second network;
• c) transmission (S3 ') of at least one additional information (ADn) via the established communication link (KV) from an additional information device (WIM) coupled to the second switching device (EX-VNB) and setting one of the additional information (ADn ) associated fee reduction information (REDn) in a fee memory (ACC-MEM) of a fee accounting device (ACC) of the second network (VNB);
• d) after the completion of the additional information transmission, interrupting (S4 ') the communication link (KV); and where
• e) the billing device (ACC) of the second network (VNT) determines the total costs for the transfer of calls from the first subscriber station (A) via the second network (VNB) and the total costs by an amount corresponding to that in the fee memory (ACC- MEM) set fee reduction information (Tn) reduced (S5 ').

11. The method according to claim 1 or 10, characterized in that the billing facility (ACC) Total cost of the call over the Communication connection determined and this Total cost by an amount equal to the Reduced fee information (REDn).   12. The method according to claim 1 or 10, characterized in that the billing facility (ACC) Total cost of another call by an amount according to the fee reduction information (REDn) reduced. 13. The method according to claim 1 or 10, characterized in that the fee reduction information (REDn) one Time information is. 14. The method according to claim 1 or 10, characterized in that from the additional information facility (WIM) to the first subscriber station (A) after the Communication facility (KV) a display on the currently stored in the charge memory Fee reductions is transferred. 16. The method according to claim 10, characterized in that to the first subscriber station (A) after completion of the Communication link (KV) a request message is sent whether additional information is transmitted and additional information is only transmitted if the first subscriber station (A) is one Confirmation message to the additional information Facility (WIM) transmits.   17. Switching device (VM) of a connection network (VNT) which can be connected to a first communication network (T) for switching calls between two subscriber stations (A, B) connected to the first communication network (T), comprising:

• a) a switching device (EX-VNB) for switching calls that are transferred from the first communication network (Telekom) to the connection network (VNT);
• b) an additional information device (WIM) coupled to the switching device (EX-VNB) for the transmission of additional information;
• c) a billing device (ACC) for billing the calls which are switched over the connection network (VNT);
• d) a charge memory (ACC-MEM) for storing charge reductions (REDn); and
• e) a communication connection establishment device (KV-M) for establishing a communication connection (KV, KV ') between the first subscriber station (A) and the switching device (EX-VM3) or between the first and the second subscriber station (A; B); in which
• f) the communication connection setup device (KV-M) in response to receiving a call setup message (SETUP), which is sent from a first subscriber station (A) via a switching device (EX-A) of the first network (T) Establishes communication connection (KV) between the first subscriber station (A) and the switching device (EX-VNB) of the second network (VNT) via the switching device (EX-A) of the first network (T);
• g) the additional information device (WIM) transmits at least one additional information (ADn) via the established communication connection (KV) to the first subscriber station (A) and one fee reduction information (REDn) assigned to the additional information (ADn) in the fee memory ( ACC-MEM) sets;
• h) after the completion of the additional information transmission, the communication connection establishment device establishes a communication connection (KV ') between the first subscriber station (A) and the second subscriber station (B) via the switching device (EX-A) of the connection network (VN); and where
• i) the charge accounting device (ACC) determines total costs for the switching of calls from the first subscriber station (A) via the connection network (VNT) and the total costs by an amount corresponding to the charge reduction information set in the charge memory (ACC-MEM) ( REDn) reduced.

18. Switching device (VM) of a connection network (VNT) which can be connected to a first communication network (T) for switching calls between two subscriber stations (A, B) connected to the first communication network (T), comprising:

• a) a switching device (EX-VNB) for switching calls that are transferred from the first communication network (T) to the connection network (VNT);
• b) an additional information device (WIM) coupled to the switching device (EX-VNB) for the transmission of additional information;
• c) a billing device (ACC) for billing the calls which are switched over the connection network (VNT);
• d) a fee memory (ACC-MEM) for storing fee reductions (RED); and
• e) a communication connection establishment device (KV-M) for establishing a communication connection (KV, KV ') between the first subscriber station (A) and the switching device (EX-VNB) or between the first and the second subscriber station (A; B); in which
• f) the communication connection setup device (KV-M) in response to receiving a call setup message (SETUP), which is sent from a first subscriber station (A) via a switching device (EX-A) of the first network (T) Establishes communication connection (KV ') between the first subscriber station (A) and the second subscriber station (B) via the switching device of the second network (VNT) and via the switching device (EX-A) of the first network (EX-A);
• g) the communication connection establishment device (KV-M) maintains a communication connection (KV) between the first subscriber station (A) and the switching device (EX-VNB) of the second network after completion of the call;
• h) the additional information device (WIM) transmits at least one additional information (ADn) via the established communication connection (KV) to the first subscriber station (A) and one fee reduction information (REDn) assigned to the additional information (ADn) in the fee memory (ACC- MEM) sets;
• i) after the completion of the additional information transmission, the communication connection establishment device interrupts the communication connection (KV); and where
• j) the billing device (ACC) of the second network (VNT) determines the total costs for switching calls from the first subscriber station (A) via the second network (VNT) and the total costs by an amount corresponding to that in the fee memory (ACC- MEM) set fee reduction information (REDn) reduced.

19. Telecommunications system (TELE) with a first Communication network (T) and at least one with the connectable first communication network (T) Connection network (VBT) for switching calls between two with the first communication network (T) connected subscriber stations (A; B) via the Connection network (VNT), the connection network (VNT) a switching device (VM) according to claim 117 and / or 18. 20. Telecommunication system (TELE) according to claim 19, characterized in that that the first network (T) is a mobile radio network (D1, D2) and / or a fixed network and the second network (VNT) is a connection landline (MOX).   21. The method according to claim 1 or 10, characterized in that the additional information includes advertising information. 22. The apparatus according to claim 17, characterized in that the additional information includes advertising information.   23. The method according to claim 1 or 10, characterized in that the first subscriber station (A) in the call setup Message (SETUP) not just the number of the second Participant station (B) and information for the Specification of the desired second network (VN), but also incorporates a request information (*) the one transmission (S3) of the at least one Additional information (ADn) and the setting of the assigned Request Discount Information (REDn) where the transmission of additional information (ADn) and that Set the fee reduction information (REDn) only in Response to detection of the Request information (*) in the Switching device (EX-VNB) of the second network (VT) is made. 24. The method according to claim 1 or 10, characterized in that after establishing the communication link (KV ') between the first subscriber station (A) and the second Participant station (B) on the first and the at least second communication network (T; VNT) from the first Subscriber station (B) a request message (*) is sent to the exchange (EX-VNB) Request message (*) is detected and the transmission of additional information (ADn) and / or the billing of the ongoing call between the first and second Subscriber station (A; B) with one for the first Subscriber station (A) in the charge memory (ACC-MEM) bills stored discount information. 25. The method according to claim 23 or 24, characterized in that the request information (*) by pressing specific key (*) on the first subscriber station (A) is entered.   26. The method according to claim 1 or 10, characterized in that the first subscriber station (A) in the call setup Message (SETUP) a phone number of the additional information Installation (WIM) and using the call setup Message (SETUP) directly a communication link between the first subscriber station (A) and the Additional information facility (WIM) on the Switching device (EX-VNB) of the second network (VN) and the first network (T) is established. 27. The method according to claim 5 or 6 or 16, characterized in that the additional information to be transmitted is selected at the first subscriber station (A) in that a special key ( 1 , 2 , 3 ) which is assigned to the respective desired additional information, is pressed and inserted into a corresponding information in the confirmation message. 28. Method for switching calls between two subscriber stations (A, B) connected to a first communication network (T) via at least one second connection network (VNT) that can be connected to the first communication network (T), with the following steps:

• a) Specify in a call setup message (SETUP) from the first subscriber station (A) the number of the second subscriber station (B) and information ( 0800 ) that the second network (VN) and one or more with the switching device (EX- VNB) of the second network (VN) specifies connected charge memories (ACC-MEM) in which charge reduction information (REDn) is stored;
• b) Sending (S1) a call setup message (SETUP) from a first subscriber station (A) via a switching device (EX-A) of the first network (T) to the switching device (EX-VNB) in the call setup message (SETUP ) specified second network (VNT);
• c) Establishing (S2) a communication link (KV) between the first subscriber station (A) and the second subscriber station (B) via the switching device (EX-A) of the first network (T) and the switching device (EX-VNB) of the second network (VN); and
• d) wherein the billing device (ACC) of the second network (VNT) determines the total cost of switching calls between the first and second subscriber station (A; B) via the second network (VNT) (S5) and the total cost an amount corresponding to the charge reduction information (REDn), which is set in the respective charge memory (ACC-MEM) specified in the call setup message by the first subscriber station (A).

29. The method according to claim 28, characterized in that the respective charge memories (ACC-MEM) in the second Network (VN) assigned a memory identification code and the Billing Facility (ACC) is the Total cost only reduced if one in the Call setup message (SETUP) from the first Subscriber station (A) inserted identification (PIN) with the respective memory identification code matches.   30. The method according to claim 29, characterized in that the one inserted by the subscriber station (A) Identification (PIN) is a PIN number. 31. The method according to claim 28, characterized in that the respective charge memories (ACC-MEM) and / or the Fee Reduction Information (REDn) Participant identifications are associated with that eligible participants for fee reductions display, the switching device (EX-VNB) comprises a subscriber identification device which based on that from the first subscriber station (A) sent call setup message the identification of the first party who made a call from the first Initiates, detects and the subscriber station Billing Facility (ACC) the total cost only reduced if that of the Participant identification device detected Identification with one of the fee stores assigned subscriber identification matches. 32. The method according to claim 31, characterized in that the subscriber identification device from the Call setup message the phone number of a initiated call and detected as a CLI (Calling Line Identification) information with the Participant identification regarding a Matching compares. 33. The method according to claim 1 or 10, characterized in that an additional information (ADn) automatically or by Send a prompt message from the first Subscriber station (A) to the additional information  Setup after establishing the communication link (KV) is made and from the first Subscriber station (A) during or after completion of the first additional information transmission another Additional information transfer request message the additional information device is transmitted and in response one or more others Additional information is transmitted. 34. Device according to claim 17 or 18, characterized in that from the additional information facility Additional information (ADn) automatically or by sending a prompt message from the first Subscriber station (A) to the additional information Setup after establishing the communication link (KV) is transmitted and from the first Subscriber station (A) during or after completion of the first additional information transmission another Additional information transfer request message the additional information device is transmitted and in response one or more others Additional information from the additional information Facility to be transferred. 35. The method according to claim 1 or 10, characterized in that then when the fee reduction is specified Charge memory for the preliminary call is used up, the switching center (EX-VNB) interrupts the precautionary call.