RU2369984C2 - Method and system for realisation of mobile control over stationary terminals in communication network - Google Patents

Abstract

FIELD: communication facilities.

SUBSTANCE: invention is related to the field of telecommunication networks. Substance of invention consists in the fact that method for realisation of mobile control over stationary terminals in communication network includes the following stages: initialisation of call by stationary subscriber terminal of communication network; connection of specified call with integrated register of basic location, in which subscriber information of stationary subscriber terminals in communication network is stored; and appropriate processing of call in compliance with subscriber information stored in specified integrated register of basic location.

EFFECT: provision of roaming in local network of stationary terminals in stationary communication.

13 cl, 6 dwg

Description

FIELD OF THE INVENTION

The present invention relates to the field of communication technology and, in particular, relates to a method and system for implementing mobile control of fixed terminals in a communication network.

State of the art

Management of subscriber information about subscribers in mobile networks is carried out centrally using the Home Location Register (HLR), which provides mobile control of mobile terminals. The HLR register is also used as an authentication center for mobile subscribers, i.e. an object that stores information about mobile subscribers used for authentication and encryption. Since information about the base location of mobile subscribers is stored in the HLR, the mobile network provides the ability to move terminals and can effectively compensate for the difference in service capabilities of different subscriber stations, thus providing a single level of service throughout the network.

However, in the fixed-line communications network, data on subscriber privileges and new service data are stored in the switches of the subscriber stations, and the subscriber station receives direct access to the local database to obtain relevant information and performs the necessary actions to process the call. As a result, the subscriber number should be tied to the subscriber station, i.e. data must be tied to a subscriber station, and the subscriber cannot use roaming in the local network, switch from one subscriber station to another, etc. In addition, since the services are provided by subscriber points, and different types of equipment are used in different subscriber points, the capabilities of different subscriber points for the provision of services differ; as a result, in existing fixed communication networks it can be difficult to provide standard (unified) services or extend it to the entire network. The configuration of storage systems in the aforementioned fixed networks also makes it difficult to activate intelligent services at subscriber stations.

Despite this, there is a base location register (HLR), which serves as a database for centralized management of information about subscribers of a mobile communication network, and also acts as a center for authenticating mobile subscribers and storing data about mobile subscribers for authenticating and encrypting information in existing mobile networks communication. As shown in FIG. 1, the Mobile Switching Center (MSC) is connected to the HLR through the Mobile Application Part (MAP), where the location of subscribers and new services is stored in the HLR and the mobile switching center ( MSC), and the Gateway Mobile Switching Center (GMSC) is connected to the HLR through the MAP protocol to obtain information about the location of subscribers and information about new services, as well as to perform basic communication functions required by subscribers. Obviously, since the HLR register is focused on the provision of mobile network services, it is connected to the mobile switching center through the MAP protocol. MAP is a protocol for mobile networks; it is not supported by fixed network switches and cannot be used in fixed networks.

In fixed communication networks, intelligent services without an access code are enabled (initialized) at subscriber stations. In this case, the intelligent services of the calling type must be initiated by the subscriber station of the calling party. On the calling side, an intelligent service, for example, a fixed prepaid service, is initialized as follows: the access code is entered by the calling subscriber station in front of the called number and sent to the Service Switching Point (SSP) to initiate the service. However, at the subscriber stations of existing networks, various types of switches are used, which makes it impossible to automatically enter the access code before the called number, therefore, the implementation of the above-described service initialization scheme is difficult. In this case, the intelligent services of the called type are initialized by the subscriber station of the called party. Intelligent services on the called side may include Simultaneous Ringing Service, Color Ring Back Tone Service (CRBTS), Unified Message Service (UMS), CENTREX zone automatic connection system (Central Office Exchange Service), etc. Simultaneous call services allow the subscriber to register several simultaneous call numbers, and all simultaneous call numbers are called simultaneously or sequentially when the subscriber receives an incoming call, which allows timely communication with the subscriber. CRBT services allow a fixed-line subscriber to change connection signals for a given telephone, for example, instead of a signal heard by the caller during a call, a voice message can be used that the caller will hear. A unified messaging service, for example in the form of a universal personal number (Universal Personal Number) allows a subscriber to have one personal number; when a subscriber moves within the network, registration of dialed numbers allows you to automatically establish a connection with a registered number when you receive calls to this personal number. The CENTREX zone system allows you to combine part of the subscribers of this switch into a virtual group of subscribers, and such subscribers can call each other at abbreviated numbers using the local switching function.

Initialization of intelligent services on the called side is performed as follows: the access code is entered by the subscriber destination (i.e., the called subscriber station) in front of the called number and sent to the Service Switching Point (SSP) to initialize the service. After service initialization, the SSP reconnects the call to the subscriber's destination. However, the called subscriber station usually cannot make the call connection to the SSP; even if the called subscriber station connects the call to the SSP, the SSP must reconnect the call to the subscriber station after processing the service, and the called subscriber station must again send the call to the SSP for initialization, which leads to multiple initialization and irrational use of the voice channel, and sometimes and call failure. Thus, the known solutions do not allow to exclude multiple call initialization on the SSP.

Disclosure of invention

In view of the above-described disadvantages of the known solutions, the problem to which the present invention is directed is to propose a method and system for implementing mobile control of stationary terminals in communication networks, providing the possibility of performing such service functions as roaming in a local network, moving from one workplace to other, etc., for fixed terminals in fixed communication networks.

The implementation of the present invention is carried out in the framework of the following technical solutions.

In accordance with the present invention, a method for implementing mobile control of fixed terminals in communication networks, including:

A. Initialization of a call by a fixed subscriber terminal in a fixed communication network;

B. Connection of the call with the integrated register of the base location, which stores subscriber information about the subscriber terminals of the fixed communication network;

C. The implementation of appropriate call processing in accordance with the subscriber information stored in the specified integrated register of the base location.

The specified step includes:

establishing an integrated base location register in which subscriber information of stationary subscriber terminals is stored in the Public Switching Telephone Network (PSTN).

The specified step And includes:

connecting said call to an integrated base location register in which subscriber information of fixed subscriber terminals in the Public Switching Telephone Network (PSTN) is stored, as well as subscriber information of mobile subscriber terminals in the public land mobile network (Public Land Mobile Network, PLMN), personal mobile phone systems (Personal Handyphone System, PHS) and third-generation mobile communication networks (Third Generation mobile communication networks, 3G) rudovaniya.

The specified subscriber information contains:

routing information and subscription information of stationary subscriber terminals and mobile subscriber terminals, wherein said subscription information contains information about the real number of the subscriber, information about subscribing to fixed prepaid services, information about subscribing to Simultaneous Ringing Services, information on subscribing to Color Ringing Service, information on subscribing to Unified Message Service and subscription information on zone system a -automatic connectivity (Central Office Exchange Service, CENTREX).

The specified integrated base location register is connected respectively to the networks PSTN, PLMN, 3G and PHS, i.e. individual network switches exchange data with the integrated base location register, and the integrated base location register also shares data with the Service Switch Point (SCP).

Data exchange between the specified switching equipment of individual networks and the integrated base location register is performed as follows: the switching equipment of individual networks exchanges data with the integrated base location register using the user side interface of a digital network with integrated services (ISDN User Part, ISUP), application protocol interface Intelligent Network Application Protocol (INAP) and Mobile Application Part (MAP).

The specified step C includes:

C1. Determination of the real number of the subscriber terminal in accordance with the subscriber information stored in the specified integrated register of the base location;

C2. Return by the integrated register of the base location of the indicated real number to the switching equipment from which the subscriber terminal initiates the call;

C3. Initialization of a call to the indicated real number by the indicated switching equipment.

The specified step C1 includes:

determination by the indicated integrated register of the base location of the real subscriber number from the subscriber information stored in it, in accordance with the subscriber number of the stationary subscriber terminal initiating the call.

The specified step C further includes:

C4. Determining the subscriber’s access number to intellectual services in accordance with the subscriber information stored in the specified integrated register of the base location, and entering the specified number of access to intellectual services in the called subscriber number;

C5 The connection of the specified call with the node switching services (Service Control Point, SCP) to initialize intelligent services in accordance with this called subscriber number.

These services may include: fixed prepaid services, simultaneous call services, callback marking services, call marking services, integrated messaging services, and CENTREX area-based automatic call setup services.

The present invention also encompasses a system for performing mobile control of stationary terminals, comprising: an integrated base location register in which subscriber information of stationary subscriber terminals and mobile subscriber terminals is stored, as well as PSTN, PLMN, 3G and PHS networks connected to said integrated base location register moreover, the switching equipment of these individual networks exchanges data with the specified integrated base location register positioning.

Between the switching equipment of these individual networks and the integrated base location register, ISUP interfaces, INAP interfaces and MAP interfaces are provided.

The present invention also provides an integrated base location register equipped with ISUP interfaces, INAP interfaces, and MAP interfaces connected to various networks and used to store subscriber information of fixed subscriber terminals and mobile subscriber terminals.

From the above technical solution proposed in accordance with the present invention, it can be seen that, since the present invention provides subscribers of the fixed-line communications network with a centralized database similar to the base location register in mobile communication networks, the presence of this database allows you to effectively compensate for differences in service delivery capabilities various subscriber points and ensure the provision of unified services to all subscribers of the fixed network.

In addition, the fixed communication network also gets the opportunity to use the service functions of the mobile communication network, i.e. for subscriber terminals of the stationary communication network, as well as for subscribers of the mobile communication network, services such as roaming in the local network, moving from one workplace to another, etc .; moreover, it becomes possible to unite subscribers of landline and mobile networks for the introduction of unified services, including assigning combined numbers to subscribers of landline and mobile networks, transferring PHS network subscribers to 3G networks without changing phone numbers, using the integrated automatic connection system (CENTREX) and network-wide provisioning of intelligent services.

In addition, in accordance with the present invention, the initialization of intelligent services on the called side is carried out centrally by the calling subscriber after polling the base location register, which allows to solve the problem of multiple service initialization in the SSP existing on the called subscriber station.

Brief Description of the Drawings

In the drawings:

- figure 1 schematically shows the network architecture of existing mobile networks,

- figure 2 shows a diagram of the network architecture of the integrated base location register (HLR) of the present invention,

- figure 3 presents the block diagram of the method according to the present invention,

- figure 4 presents a block diagram of a service based on the ISUP signaling of the present invention,

- figure 5 presents a block diagram of a service based on INAP signaling of the present invention,

- figure 6 presents a diagram of a procedure for implementing integrated services of the present invention.

The implementation of the invention

The main task to which the present invention is directed is to create a base location register for fixed subscriber terminals, i.e. integrated HLR, providing centralized storage and processing of subscriber information of subscriber terminals of the fixed communication network. The specified subscriber information includes information on routing to subscribers, information on subscribing to smart services, etc., which allows the subscriber terminals of the fixed communication network to support the functions of the subscriber terminals of the mobile communication network, for example, roaming (search for a subscriber), moving workplaces without changing telephone numbers, etc., moreover, the problem of initialization of intelligent services throughout the network is solved by the register of the base location. At the same time, the integrated HLR register can also serve as the base location register of the PHS network, PLMN network and 3G network, providing future communications with combined services of fixed and mobile networks.

In accordance with the present invention, firstly, a centralized database is provided, i.e. an integrated HLR register for fixed subscriber terminals, used to store routing information to subscribers and subscription information for services, which allows subscribers of a fixed communication network to move from one office space to another and provides unified services to subscribers of a fixed communication network; secondly, the specified centralized database for fixed subscriber terminals simultaneously functions as a mobile HLR register and plays the role of an integrated HLR register, i.e. at the same time provides a unified database for PSTN, PHS, PLMN and 3G networks, used for storing routing information to mobile network subscribers and stationary network subscribers, as well as service subscription information, which may include real subscribers numbers, subscription information for fixed prepaid services, information about subscribing to simultaneous call services, information about subscribing to call marking services, information about subscribing to services of the integrated messaging service, information about signing ke to the services of the zone automatic connection establishment system (CENTREX), etc., with the aim of developing a combined number creation service combining landline and mobile communications networks, a unified automatic connection system (CENTREX), initialization of intelligent services throughout the network, etc. .d .; finally, the integrated HLR register also provides the use of ISUP interfaces (the user part of the digital network with integrated services, ISDN) based on the fixed communication network and INAP signaling interfaces that directly interact with the fixed communication network via the ISUP and INAP protocols. In addition, the integrated HLR register enables the use of a MAP signaling interface based on a mobile network that interacts with PHS and 3G networks, which makes it possible to share the data stored in the integrated HLR register with Service Control Points (SCP) of the intelligent networks with the aim of introducing relevant intellectual services and initializing intelligent services throughout the network.

In accordance with the present invention, all calls are first routed to the integrated HLR register; from the integrated HLR register, real numbers of subscriber terminals are obtained, after which call connection processing is performed in accordance with these real numbers. As a result, in accordance with the present invention, there is the possibility of creating combined numbers, ensuring the mobility of numbers (Number Portability, NP) of a fixed network, as well as the initialization of intelligent services throughout the network.

The indicated purpose of the combined numbers means the centralized management of the numbers of subscribers of the communication network, each subscriber having two numbers: one of them is a public logical number (for example, the mobile phone number of this subscriber), and the second is a physical number that determines the base location of the subscriber; although the physical number can be transferred from one workplace to another and changed if necessary, the logical number remains unchanged. Thanks to the integrated HLR register, the subscriber numbers assigned to individual subscribers can be encoded and assigned in accordance with practical requirements; for example, assignment of combined numbers to subscribers of a fixed communication network, as well as to subscribers of fixed and mobile communication networks, can be arranged. In addition, the function of number mobility (NP) can be implemented in a fixed communication network, i.e. the use of fixed-line subscriber numbers is no longer limited to a specific physical location; instead, the subscriber number remains unchanged and provides the possibility of normal use of communication functions when changing the physical location of the subscriber, as is the case in mobile communication networks, which significantly increases the usability of communication networks using stationary subscriber terminals.

The specified initialization of intelligent services throughout the network is as follows: information about subscribing to intelligent services is stored in the integrated HLR register. When a call comes from a subscriber with rights to use intelligent services, after analyzing the information on subscribing to intelligent services, the integrated HLR register automatically enters the appropriate access code for intelligent services before the called number and routes the call to the service switching node (SSP), which completes the initialization relevant intellectual services. Thus, in accordance with the present invention, the initialization of intelligent services on the called side is carried out centrally, by calling the subscriber station after submitting the request to the integrated HLR register, which helps to prevent a situation in which the call cannot reach the destination due to the reinitialization of the service on the SSP what happens during the initialization of intelligent services by the called subscriber station according to known solutions.

The above is a brief description of the present invention. Embodiments of the method of the present invention are described below with reference to the accompanying drawings. As shown in figure 3., this method, in particular, includes the following steps:

step 31: establishing an integrated base location register (i.e., an integrated HLR register); This integrated HLR register stores subscriber information of subscriber terminals of individual networks, including information on routing to subscribers, information on subscribing to services, etc .;

moreover, the number of these individual networks includes stationary communication networks and mobile communication networks, in particular networks PSTN, PLMN, 3G, PHS, etc .;

step 32: connecting the specified integrated HLR register with the respective networks PSTN, PLMN, 3G and PHS, i.e. the switches of individual networks exchange information with the integrated HLR register to receive subscriber information of the respective subscriber terminals, and the indicated subscriber information may be a real subscriber number, access code for intelligent services, etc .;

step 33: the switches of the individual networks complete the connection processing of the corresponding call in accordance with the received subscriber information of the subscriber terminals.

According to the present invention, the aforementioned service processing procedure can be carried out in a fixed communication network using the following two solutions: solutions based on ISUP signaling and solutions based on INAP signaling.

The block diagram of the solution based on ISUP signaling, presented in figure 4, includes the following steps:

step 41: initializing the call by the caller at subscriber station 1 (i.e., at the subscriber station to which the caller belongs) and sending the call to the integrated HLR register, i.e. sending an Initial Address Message (IAM) to the integrated HLR register;

step 42: after checking and analyzing the calling number, if the subscriber initiating the call is subscribed to the corresponding service and calling number conversion is required, the integrated HLR register returns the converted calling number to subscriber station 1 using the Address Complete Message (ACM);

step 43: at the same time, after checking and analyzing the called number, if the subscriber initiating the call is subscribed to the corresponding service and the called number is to be converted, the integrated HLR register establishes a connection between the disconnecting subscriber station and the integrated HLR register using the Release Message, REL ) and at the same time returns the converted called number, which allows the subscriber station to re-analyze the called number and re-select the channel using communication REL;

step 44: after receiving the REL message, subscriber station 1 sends a Release Complete Message (RLC) to the integrated HLR register and disconnects the relay circuit connected to the integrated HLR register;

step 45: subscriber station 1 sends an IAM message to subscriber station 2 (the subscriber station to which the called subscriber belongs) in accordance with information received from the integrated HLR register;

step 46: after receiving the IAM message from the subscriber station 1, the subscriber station 2 returns an ACM message to the subscriber station 1.

The subscriber station re-initializes the new call in accordance with the calling and called numbers returned by the integrated HLR register, and the call processing procedure coincides with the procedure used in known solutions; the only difference is the change in the calling and called numbers.

In this case, as shown in Fig. 5, the procedure for processing services based on INAP signaling includes the following steps:

step 51: if the call is initiated by the subscriber of the subscriber station of the fixed network, and the corresponding intellectual service is initialized through SSP, the SSP sends information about the call and called numbers to the integrated HLR register through the initial detection point (Initial Detection Point, InitialDP);

step 52: the integrated HLR register configures the corresponding event detection point and sends to the SSP a request to send a message about the events detected in the corresponding detection point to the integrated HLR register;

step 53: the integrated HLR register initializes the operation of the connection (Connect) in the SSP;

step 54: after detecting the corresponding events in the detection point, the SSP sends a message to the integrated HLR register; for example, after detecting events such as an attempt to make a call, receiving information, or analyzing information, the SSP reports this to the integrated HLR register;

step 55: after receiving event messages detected at the detection point, the integrated HLR register terminates the corresponding connection through the SSP;

moreover, if steps 52, 54 and 55 are not performed, the Connect operation initiated at step 53 initializes the End Session operation through the integrated HLR register in the SSP.

Using the integrated HLR register of the present invention also allows you to implement integrated services in fixed and mobile networks, and these integrated services are used to:

centralizing the unification of subscribers of fixed and mobile communication networks into a virtual subscriber group and conducting various types of calls within this subscriber group, including the CENTREX integrated service, assigning fixed numbers to fixed and mobile communication network subscribers, migrating PHS system subscribers (for example, personal system subscribers mobile phones, Personal Handyphone System) to the 3G system without changing the phone number, etc. For example, when a subscriber initiates a call to a subscriber of a fixed communication network of a mobile communication network, the procedure for processing a service presented in FIG. 6 includes the following steps:

Step 61: Fixed switches, such as LS (fixed-line subscriber station), MS (transit switch), GW (gateway switch), TS (paid switch), etc., call the integrated HLR using an IAM message , i.e. when the call is initiated by the subscriber of the communication network, the switch first transfers the call to the integrated HLR register, whereby the IAM message transmits the subscriber number (DN, mobile network subscriber number) of the called subscriber;

step 62: the integrated HLR register sends a roaming number assignment (PRN) request to the mobile subscriber point (Virtual Mobile Switching Center, VMSC);

step 63: the mobile subscriber station VMSC sends a response to the PRN request to the integrated HLR register and assigns a number for roaming in the mobile communication network;

step 64: the integrated HLR register sends the received number for roaming in the mobile communication network to the fixed-line switch, for example, the subscriber station of the fixed-line communication network, a gateway switch or a paid communication switch, using the REL message;

step 65: the fixed communications switch sends an IAM message to the Gateway Mobile Switching Center (GMSC), the IAM message containing a number for roaming the called party in the mobile communication network;

step 66: the GMSC routes the call to the VMSC using the IAM message, after which the call is further processed by the VMSC using the call processing procedure of the known solutions.

In accordance with the present invention, a centralized database is provided, i.e. integrated HLR register, both for mobile networks and for fixed networks; in addition, the presence of an integrated HLR register is able to effectively compensate for differences in the possibilities for providing services by various subscriber stations and to ensure the provision of unified services to all subscribers of a fixed network. Thus, the fixed communication network is able to perform the functions of a mobile communication network, i.e. fixed network subscribers get the opportunity to move from one workplace to another without changing the phone number, as well as mobile network subscribers; Moreover, the use of the integrated HLR register also allows combining subscribers of landline and mobile networks, introducing services including assigning combined numbers to subscribers of landline and mobile networks, transferring PHS network subscribers to 3G networks without changing the phone number, using the integrated CENTREX system, initialization network-wide intelligent services, etc.

The above description covers only the preferred embodiment of the present invention and does not impose restrictions on the scope of the invention protected by the patent. Variations and replacements that can easily be made by specialists in this field within the technical field described in the present invention do not go beyond the protected scope of the invention. Therefore, the protected scope of the present invention is determined in accordance with the attached claims.

Claims (13)

1. A method for implementing mobile control of stationary terminals in a communication network, comprising the following steps:
A. establish an integrated register of the base location, which stores the subscriber information of fixed subscriber terminals in a fixed communication network;
B. when a call is initiated by a stationary subscriber terminal, the fixed communication networks carry out appropriate call processing in accordance with the subscriber information stored in the integrated base location register;
wherein the integrated base location register is connected to the fixed network switch. 2. The method according to claim 1, characterized in that at the indicated step A, an integrated base location register is established in which subscriber information of stationary subscriber terminals is stored in the public switched telephone network (PSTN). 3. The method according to claim 1, characterized in that at the indicated step A, an integrated base location register is established in which subscriber information of fixed subscriber terminals is stored in the public switched telephone network (PSTN), as well as subscriber information of mobile subscriber terminals in the terrestrial network Public Mobile Telecommunications (PLMN), Next Generation Network (NGN), Personal Mobile Phone System (PHS) and Third Generation Mobile Network (3G). 4. The method according to claim 3, characterized in that the subscriber information contains routing information and subscription information of stationary subscriber terminals and mobile subscriber terminals, and the subscription information contains information about the real number of the subscriber, information about the subscription to services with a fixed prepaid, subscription information for simultaneous call services, subscription information for call marking services, subscription information for integrated messaging services, and zone subscription information noy CENTREX system automatically establishing connections. 5. The method according to claim 3, characterized in that the integrated base location register is connected, respectively, to the PSTN, NGN, PLMN, 3G and PHS networks and is used by individual network switches to communicate with the integrated base location register, and the integrated base location register also shares data with a service switching node (SCP). 6. The method according to claim 5, characterized in that the data exchange between the switches of the individual networks and the integrated base location register is performed as follows: the switches of the individual networks exchange data with the integrated base location register using the user side interface of the digital network with integrated services (ISUP ), Intelligent Network Application Protocol (INAP) interface, and Mobile Application Interface (MAP). 7. The method according to claim 1 or 2, characterized in that at the indicated step B:
B1. determine the real number of the subscriber in accordance with the subscriber information stored in the integrated register of the base location;
IN 2. by means of the integrated base location register, the real number is returned to the switch from which the subscriber terminal initiates the call;
B3 Initialize a call to the indicated real number by the indicated switching equipment. 8. The method according to claim 7, characterized in that at the indicated step B1, the real subscriber number is determined by the integrated base location register from the subscriber information stored in the integrated base location register in accordance with the subscriber number of the stationary subscriber terminal initiating the call. 9. The method according to claim 7, characterized in that at the indicated step B further:
B4. determining the subscriber’s access number to the intellectual services in accordance with the subscriber information stored in the integrated register of the base location, and entering the specified number of access to the intellectual services into the called subscriber number;
B5. connect the specified call with the service switching node (SCP) to initialize intelligent services in accordance with the called subscriber number. 10. The method according to claim 9, characterized in that the specified services include fixed-prepaid services, simultaneous call services and CRBT services, services of the integrated messaging service and services of the CENTREX zone automatic connection establishment system. 11. A system for performing mobile control of fixed terminals in a communication network, comprising an integrated base location register for storing subscriber information of fixed subscriber terminals and mobile subscriber terminals, public switched telephone network (PSTN), next generation network (NGN), terrestrial mobile communication network public domain (PLMN), a third generation mobile network (3G), as well as a personal mobile phone system (PHS) connected to an integrated register AZOV location and switching equipment of said individual networks, performing data exchange with an integrated base register locations. 12. The system according to claim 11, characterized in that between the switching equipment of the indicated individual networks and the integrated base location register, ISUP interfaces, INAP interfaces and MAP interfaces are provided. 13. Integrated base location register (IHLR), equipped with a user interface of a digital network with integrated services (ISUP) and an application protocol interface of an intelligent network (INAP), containing
means for storing subscriber information of the subscriber terminals, means for determining the real number of the subscriber in accordance with the subscriber information stored after the call was initiated by the subscriber terminal connected to the specified integrated base location register (IHLR), and
means for exchanging data via the user-side interface of a digital network with integrated services (ISUP) and the application protocol interface of an intelligent network (INAP) with the switching equipment of the network, which thus obtain a real subscriber number and carry out the call connection process.

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