DE2050975C3 - Method for registering the subscribers of a telecommunications network that can be reached at an exchange - Google Patents

Description

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The invention relates to preferably not hierarchically structured telecommunications network with a A multiplicity of exchanges connected to one another by a network of connection paths to which (or from whom) the individual subscribers of the telecommunications network keep their phone number

be able to freely switch on (or switch off).

In such a telecommunications network, it is necessary to establish a connection between two participants Carry out a subscriber search for the subscriber to be called for this connection. Sweet it is known (see DT-AS 12 89 884), to search more freely Connection paths in a switching center connected to one another by a network of connection paths each with a large number of subscriber stations comprehensive telecommunication network, in its individual exchanges subscriber stations belonging to their respective switching area Information is stored during a search process with the one to the switching area calling subscriber station belonging to the relevant exchange or from a neighboring exchange here supplied, a subscriber station to be called identifying dialing information compared soft in the event of non-agreement with one of the in the respective exchange regarding all information stored in their switching area belonging to the subscriber stations to the the switching center in question is forwarded to neighboring switching centers in the manner to proceed that the forwarding of a subscriber station designating dialing information together with one that enables the establishment of a connection from the called to the calling subscriber station Additional information takes place, in each case via one only for the duration of such a forwarding occupied by the relevant exchange to the respective neighboring exchange Connection path until, if necessary, a match between the dialing information in an exchange of the called subscriber and one of the controllable in the relevant exchange Subscriber locations indicating designations is determined, and that then in accordance with the Additional information added to dialing information establishes a connection between the exchange in whose switching area is the called subscriber station, and the switching center in whose Switching area is the calling subscriber station, and further between the called and the calling subscriber station is established.

Elsewhere it has been suggested to seek free communication paths in one with each other Switching centers connected by a network of connection paths, each with a large number of subscriber stations comprehensive telecommunications network, in each of its individual exchanges to their respective Switching area belonging subscriber stations information is stored, which at a search process with the one belonging to the switching area of the switching center in question calling subscriber station or supplied by a neighboring exchange, one to calling subscriber station and dialing information used as search information compared which in the event of non-compliance with one of the in the respective exchange regarding all information stored in their switching area belonging to the subscriber stations to the the respective switching center neighboring switching centers under each only for the duration of Transmission of this dialing information forwarding the occupancy of the respective connection routes being, being in each in the course of the passing of the

Election information controlled exchange regarding the dialing information indicating the calling subscriber station and / or the subscriber station to be called information is stored about which of the respective neighboring exchanges this electoral information has been taken to proceed in such a way that after the determination of the the exchange containing the subscriber parts to be called establishes a connection to the subscriber group that is calling containing switching center through the through the in each case previously controlled switching centers stored information is switched through immediately, that in the course of this through-connection of the connection paths from the subscriber station to be called Exchange to the exchange containing the calling subscriber station an acknowledgment signal in the form of the originally sent out which identifies the subscriber station to be called Transferring dialing information and in the switching center containing the calling subscriber station the call number still stored there and identifying the subscriber station to be called is compared and that after a positive comparison, the calling subscriber station directly with the connected connection path is connected (cf. the subsequently published DT-OS 19 49 375).

The individual exchanges of the telecommunications network each point to such a subscriber search a to a certain extent a call number connection position corrector forming memory in which the phone numbers of the subscribers currently connected to the exchange in question the respective connection layer are stored, and it is in the individual exchanges in each case In the course of a subscriber search for the purpose of establishing a connection to a subscriber to be called from the calling subscriber station or a call number supplied by a neighboring exchange compared with the call numbers stored in the call number connection position corrector, the relevant Call number to neighboring numbers if they do not match one of the stored call numbers Switching centers is forwarded and in the event of a match with one of the stored Call numbers the connection is initiated.

The memory forming the call number / connection position corrector can be stored in a presence and be subdivided into an adjoining revaluation memory, from which the incurring memory is made up the sum of those used in a connector panel designed for the largest possible number of participants There is a call number plug into which the call numbers of the associated subscribers fc.st. are wired, whereby between the location of the subscriber lines of the participants in the subscriber line field and the The position of the associated call number plug in the plug connection field of the presence memory is a fixed geometric one There is an assignment to which the assignment 6u of the connections between the presence and correcting memories is made (see DT-OS 14 87 869). Here, every freely connectable participant is a so-called participant Call number plug to be assigned to the plug connector field belonging to the respective exchange is plugged in. Such a subscriber intends his connection position within the telecommunications network to change, his call number plug must be from the connection field of the previous exchange be pulled out; after inserting his phone number plug into a corresponding receptacle of the The connection field of the new exchange is then the subscriber in question at this new exchange of the telecommunications network. Such a training of the number-connection position-Urnwerters requires a relatively high technical and structural effort and requires Registration or deregistration of participants in any case, the participation of an operator in the respective exchange.

To avoid this, a device is already the to subscriber stations of a switching Steep a telecommunications network each accessible nodes, each of which is accessible from one of his own call number, with respect to which is in each case stored for reporting in a bearing provided in the exchange memory, to which subscriber station under this Call number are to be added to each connection to be established, has been proposed in which each participant is assigned a subscriber key, with the help of which the call number of the respective subscriber can be transferred to the memory from each subscriber station, and with each subscriber key next to the respective subscriber number representing characters a storage command and carries a character representing a removal command and can be inserted into a key receptacle provided in the respective subscriber station in such a way that it initially represents the store command or the removal command en characters and then the characters representing the subscriber number are transmitted from this subscriber station to the memory of the exchange, in which, when the characters representing the storage command are transmitted, information about the connection position of that subscriber station is stored with respect to the characters subsequently transmitted and representing the subscriber number of the respective subscriber from which the characters have been transmitted and from which such information is deleted if the characters representing the removal command are transmitted before the characters representing the respective subscriber number are transmitted (DT-PS 19 49 365). Such a use of subscriber keys brings with it certain disadvantages insofar as such subscriber keys can be lost, after which the relevant subscriber can no longer log in or out of an exchange, but on the other hand a dishonest finder of such a subscriber key unauthorizedly contacts an exchange of the telecommunications network and can participate in telecommunications traffic under a false name.

The invention now shows a way of avoiding such disadvantages and still reporting the an exchange each attainable subscriber of a telecommunications network of the aforementioned Type to enable without the use of an operator in the respective exchange.

The invention relates to a method for registering the freely connecting to (or from) the individual exchanges while retaining their phone number (or disconnecting) subscribers in a telecommunications network with a large number of one another exchanges connected by a network of connection paths, in which in each case a call number

mer connection position corrector the phone numbers of the straight subscribers connected to the relevant exchange under the respective connection position are stored and each in the course of a subscriber search for the purpose of establishing a connection to a person to be called Participants from the calling participant booth or from a neighboring exchange supplied call number with the in the call number connection position corrector Compare stored numbers and if they do not match ω forward with one of these stored phone numbers to the respective neighboring exchanges and if they match one of these stored call numbers, initiate the connection setup; this method is characterized according to the invention that according to the call number one logging on to an exchange in a certain connection location and following this Submission of a registration signal his own call number dialing participant a participant search in the entire telecommunications network takes place, through the unsuccessful termination of the automatic storage the number of the subscriber registering under the connection position under which he addressed the relevant Switching center has switched on, is initiated in the call number-connection position corrector.

The invention has the advantage that each subscriber in the telecommunications network has his call number Log in to the respective exchange without using an operator, d. H. the connection position can be assigned to the subscriber line used by him, with this registration only possible is when the phone number in question is no longer registered at any other point in the telecommunications network.

In a further embodiment of the invention, a telephone number connection position corrector under one specific connection position stored phone number on arrival of one of the under this connection position the respective exchange connected subscriber erased deregistration signal will. In the case of such a logout, the cooperation of an operator in the Exchange also not required.

It should be noted at this point that (from DT-AS 14 87 891) a method for establishing connections between subscriber stations of a telecommunications network, information in its individual exchanges are stored on the connection position of all subscriber stations in the telecommunications network, known is, therefore, a connection from a calling subscriber to a subscriber station to be called, that has changed its exchange from the originating exchange from, i.e. from the exchange of the calling subscriber, initially directed to the previous exchange and from there onwards via the new exchange in accordance with information stored there to the new exchange of the subscriber to be called is set up, with information at the same time is transmitted via the new exchange to the originating exchange. the "Moving address", d. H. the information indicating the new connection position of such a subscriber station can from this subscriber station before moving. i.e. before changing the connection position, to the f> 5 Exchange are stored to which the subscriber station in question is still connected until then is; however, it can also be stored there after changing the connection position. The initial one Storage of information about the connection position of the subscriber stations in the telecommunications network in the individual switching centers can thereby in connection with the known method happen that test connections from each exchange to the individual exchanges are set up and after determining the subscriber stations belonging to the respective exchange Information about their connection position is forwarded to the exchanges involved in the connection setup will; in this context it is also conceivable that such test connections is initiated by the subscriber stations themselves, d. That is, subscriber stations of the telecommunications network have a structure of test connections to the individual exchanges and a supply of information about the connection position of the (other) subscriber stations belonging to the respective exchange cause the switching centers involved in the connection establishment, after which then according to the stipulation This information enables a specific connection to be established to the relevant (other) subscriber stations is. This known method thus differs both in terms of its task as also with regard to its process principle from the invented process.

It should also be noted that a circuit arrangement for telecommunications, in particular telephone exchanges, in which a subscriber can switch to a Initiates special service facility and the switching back of incoming calls for him, that he selects the device causing the switchover and then by dialing his own subscriber number indicates which subscriber set is to be switched, is known (see DTPS 12 25 248), at the device causing the switchover the Participant number takes up and preferably saves and before an effective switchover a control call over the normal telecommunications switched network and the established up to this facility Connection determines whether the specified subscriber number is the one leading the switchover in the path Participant heard. In this known circuit arrangement is the own number of the relevant subscriber for the controlled establishment of a connection loop

Subscriber circuit - first choice levels of the exchange - switching device - last dialing levels of the exchange - subscriber circuit used to check the correspondence between the number and the connection. The problem underlying the invented process is capable of this known circuit arrangement, which cannot be elaborated with the invented method Having points of contact, does not do justice.

The invention will be explained in more detail with reference to the drawing.

In the drawing, a section from a switching center VSt is shown schematically, to which a plurality of subscriber stations TSt can be freely connected under their respective call number. For this purpose, the exchange VS / contains, inter alia, a call number / connection position corrector RA, in which the call numbers of the subscribers currently connected to the exchange VS / are stored under their respective connection position. The exchange

In the course of a subscriber search, VSi compares, in order to establish a connection to a subscriber to be called, the call number supplied by the calling subscriber station directly or via a neighboring exchange with the call numbers stored in the call number connection position corrector RA and directs them if they do not match one of these stored call numbers the respective neighboring exchanges, while they initiate the connection if they match one of these stored call numbers. This can e.g. B. proceed in a manner as indicated above as known or suggested; more detailed information on this should be unnecessary at this point, since this is not necessary to understand the invention. In relation to the call number / connection position corrector RA , it is sufficient in this context to know that the call number / connection position corrector RA receives a corresponding search query on the input side, which contains the call number of the subscriber to be called for the desired connection, on the output side Provides information about the connection location of the subscriber to be called, provided that this subscriber is currently connected to the switching center VSt in question. The call number / connection position corrector receives the information required for this from the service stations TSf connected to the switching center VSr in question; How this can be done will become more apparent in the following for the example of an exchange shown in the drawing.

If a subscriber who has connected with his subscriber station TSt to the exchange VSf shown in detail in the drawing wants to register with the exchange VSi, he first gives a registration signal and then dials his own number. The registration signal can be generated, for example, by pressing a special registration key or by selecting a special code. The registration signal and the dialed phone number now arrive in the exchange VSf in a manner which is of no further interest here to an input line m of an information receiving device / E provided in the exchange VSf shown in the drawing. A registration signal evaluator An is connected to the line m and responds to the registration signal and thereupon a switch S1 closes, so that the subscriber's own call number following the response signal reaches a subsequent recording memory R from the line m. From the recording memory R , the call number of the subscriber registering is first transmitted on via a line s in order to carry out a subscriber search in the entire telecommunications network containing the exchange VSf according to this call number. How such a participant search can take place is already known or has been suggested and therefore does not need to be pursued further at this point. If the participant search remains unsuccessful, what z. B. it can be determined that a corresponding signal has been received on all of the switching center VS / to other switching centers of the telecommunications network leading connection lines, then a switch S2 connected downstream of the recording memory R is supplied with an actuation signal via a control line f , so that the switch S2 is closed and the call number of the subscriber TSf who has just logged on, stored in the recording memory R , arrives at the call number connection location Urnwerter RA and here at that of the connection location under which the subscriber who made the call with the subscriber station TSf connected to the exchange VSf, corresponding storage space is saved. This means that the subscriber in question is logged on to the exchange VSf, so that from now on in any subscriber search for this subscriber, the call number / connection position corrector RA will respond to a corresponding search query containing the call number in question with the output of a request from the subscriber station in question TSf can answer assumed connection position indicating information.

It should be noted that a subscriber who registers can follow his registration and thus determine its success himself, that when he lifts his handset and as a display of an unsuccessful subscriber search, he receives a non-connected tone (NU tone) and after that his call number has been saved in the telephone number connection position corrector of the exchange when the handset is picked up again receives the dial tone, while it receives a successful subscriber search, ie. if a subscriber station is already switched on in the telecommunications network under the call number of the subscriber who is currently registering, receives the free or busy tone. In such a case, the subscriber in question must wait to register until the subscriber in question is logged off from his previous connection position, which could be done subsequently with the help of a subscriber station connected in the relevant earlier connection position or with the help of an operator of the relevant exchange.

Usually, however, a participant becomes himself unsubscribe before leaving his previous connection position. Such a logout can be done with the help of a by pressing a special logout button or by Opting out of a special key figure generated logout signal are triggered, when it arrives the under the telephone number in question stored in the telephone number connection position corrector of the -related exchange is deleted.

The drawing indicates that in the switching center VSf when a deregistration signal from the subscriber TSf arrives on the line m, this is determined by a deregistration signal evaluation circuit Ab and that this deregistration signal evaluation circuit Ab then sends a clear signal to the input in question of the call number connection position corrector RA so that the call number stored in the call number connection position corrector RA under the connection position previously taken by the subscriber station TSf is deleted.

The deregistration can in turn be followed by the deregistering subscriber, who first received the dial tone when he lifted his handset, receives the NU tone after the deregistration has been completed

It should also be noted that at the same time with the deletion of a number in the call number-connection position-order RA also further information stored there under the relevant connection position, in particular call numbers for call diversion or further call numbers of a collective connection. deleted know how. Such additional numbers could

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beforehand in a manner corresponding to the processes described above when registering the subscriber concerned in the call number connection position corrector RA on the basis of the previous reception of a corresponding special signal issued by the subscriber concerned, z. B. in the form of a special code, have been registered without a corresponding subscriber search had previously been carried out in the telecommunications network.

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Finally, it should be noted that the connection position of a subscriber does not only need to be given by the subscriber in question being connected to a specific terminal of the exchange VSL, but that such a specific connection position can also be given by the subscriber in question being connected to Connection via a specific time division multiplex line on this time division multiplex line, a specific time channel is occupied.

1 sheet of drawings

Claims (4)

Patent claims: 1. A method for registering those attainable at an exchange, while maintaining their call number freely to or from the individual exchanges connecting or disconnecting subscribers of a telecommunications network with a large number of exchanges connected to one another by a network of connection paths, in which each In a call number connection position corrector, the call numbers of the subscribers currently connected to the relevant exchange are stored under the respective connection position and in the course of a subscriber sucns for the purpose of establishing a connection to a calling subscriber from the calling subscriber unit or from a neighboring subscriber Telephone number supplied to the exchange with (compare the telephone numbers stored in the telephone number / connection position corrector and, if they do not match one of these stored telephone numbers, forward them to the respective neighboring exchanges and if they match g initiate the connection setup with one of these stored call numbers, characterized in that, according to the call number of a subscriber who registers at an exchange in a certain connection location and for this purpose dials his own call number after issuing a registration signal, a subscriber search takes place in the entire telecommunications network unsuccessful termination of the automatic storage of the subscriber's call number under the connection position under which he connected to the relevant exchange is initiated in the call number connection position corrector. 2. The method according to claim 1, characterized in that after the storage of the call number of the registering subscriber selected by the latter after a special signal has been sent ! additional phone numbers under the same connection position can be stored in the telephone number / connection position corrector. 3. The method according to claim 1 or 2, characterized in that a call number connection Fage corrector Call number stored under a certain connection position when one of the number in this connection position arrives at the relevant one Exchange connected participants deregistering signal is deleted. 4. The method according to claim 2 and 3, characterized in that at the same time with the number of the signing off subscriber in the call number connection position corrector also under the relevant Additional call numbers stored in the connection position can be deleted.