KR100605866B1 - Method of calling control for inter office exchange portability service subscriber and apparatus - Google Patents

Abstract

The present invention provides a number porting service for preventing the waste of exchange number resources and providing efficient number porting services by providing a number porting service so that subscribers who have moved to other exchanges can be assigned the same number as the previous exchange station. The number transfer service method includes assigning a subscriber number to a local number and a local station number in a telephone number table in an exchange so as to connect a call received at the local station number to a corresponding subscriber.

Transition between subscribers, national number, local station number and number.

Description

Method of call control of mobile service subscriber between stations and device therefor {METHOD OF CALLING CONTROL FOR INTER OFFICE EXCHANGE PORTABILITY SERVICE SUBSCRIBER AND APPARATUS}             

1 is a schematic diagram of a network for a number porting service using intelligent network service logic according to an embodiment of the present invention.

FIG. 2 is a diagram illustrating a part of a database of each exchange for explaining a method of storing telephone number information according to an embodiment of the present invention.

The present invention relates to a call control method of an inter-station mobile subscriber, and more particularly, to a control method and apparatus for allowing a number mobile service subscriber to receive a previous switching office telephone number so that the call can be received as a telephone number of the previous switching office.

Currently, a public exchanging system manages a unique number for each exchange in the form of a station number, and this unique number of the exchange is called an internal prefix. The subscriber's telephone number accommodated at the CO switch always includes the local number of the switching center (usually called the station number in the telephone number), and the subscriber's identification number is further added at the corresponding station number to establish one subscriber telephone number. In addition, the exchange is set so as to manage the station number of the other switching station in addition to the above-described home station number according to the area information in which the corresponding switching station is located as follows, and the station number management information is managed by a database in the switching station.

Internal prefix: A station number indicating a call received at a corresponding exchange station, which may be included in the corresponding subscriber station telephone number.

Local area prefix: A local area prefix of another exchange that uses the same area code to manage incoming calls to subscribers located in other exchanges in the same area.

Toll prefix: Information indicating other area codes that are not in the same area, and managed for incoming subscribers located in other area exchanges.

When any subscriber accommodated in an exchange station having a database in which such information is stored is moved to an area where an exchange station in another region is located for reasons of moving, the subscriber is not newly assigned a station number of the other regional exchange station. If you do not receive the incoming service. Therefore, the telephone subscriber has a inconvenience in that a new telephone number must be assigned whenever there is an automatic movement from a certain area in which the switching center is located to a specific area in which another switching station is located.

The reason why you cannot give the subscriber's phone number used by the previous exchange to the subscriber who moved to the exchange is that each exchange has a unique station number that indicates the location of each exchange, as already described. This is because the telephone number always includes the unique station number so that whenever the location of the subscriber switching station is changed, the station number, which is the unique number of the switching station, must be changed in the subscriber telephone number.

Accordingly, an object of the present invention is to provide a method and apparatus for controlling a number portability call reception, which enables a caller who has moved from station to station in another region as a telephone number of a previous exchange.

Another object of the present invention is a number porting call so that a subscriber of a telephone number assigned to a local number of an exchange located in an arbitrary area can receive the incoming service as the telephone number of the local number of a previous exchange even if the subscriber is accommodated at an exchange in another region. It is to provide a service control method and system.

It is still another object of the present invention to provide a subscriber who moves to another switching station to give the same telephone number as the previous switching station, thereby preventing waste of exchange number resources and providing an efficient number porting service.

The call control of the inter-station mobile service subscriber according to the principles of the present invention includes a plurality of switching stations connected to a network with a database storing local and local station number information and number porting service information, and a specific switching station among the switching stations. A call control method of an inter-station mobile service subscriber having an intelligent network service processing unit that stores local station information of another exchange to which the subscriber has moved when the connected subscriber moves a number to an exchange in another region. Registering the number transfer information indicating that the number transfer subscriber has been moved to the switching center of the other region in the database of the previous switching center, and transferring the telephone number of the subscriber number transferred from the switching center of the other region to the local station table of the exchange. Registration process and any call exchange Transmitting the number mobile subscriber information to the calling exchange by the previous switching station when the information for calling the number mobile subscriber is received from the mobile terminal; and receiving the number mobile subscriber information by the calling party switching station to the intelligent network service processor. And requesting a number porting service and receiving the local number of the switching station of the number port of the subscriber transmitted therefrom, and looping the incoming call.

The operation of the preferred embodiment according to the present invention will now be described in detail with reference to the accompanying drawings.

1 is a schematic diagram of a network for a number porting service using intelligent network service logic according to an embodiment of the present invention. Reference numerals 12, 14, and 16 in FIG. 1 are exchange stations having a database DB for a local number, a local station number, and a long distance station number for incoming and outgoing calls. 18 is an intelligent network service processor (SCP), which has a database of information of a number mobile subscriber. For example, in database DB4 in SPC 18, all telephone subscribers STNi (where i is a positive integer of 1, 2, 3, ..., etc.) of each switching station 12, 14 and 16 are moved to another switching center. It stores local station information of other regional exchanges, and the above information transmits the mobile local station number of the corresponding subscriber in accordance with the request for the number transfer service from each of the exchanges 12, 14 and 16. The exchange stations 12, 14, 16 and the intelligent network service processor 18, as is well known, are connected in the form of a network and provide the information to the calling exchange by sending and receiving various signaling for making a call and receiving service with each other. .

FIG. 2 is a diagram illustrating a part of a database of each exchange for explaining a method of storing telephone number information according to an embodiment of the present invention. Typically, the subscriber's telephone number includes the local number of the switching center where the subscriber is located and the called number used to find the physical information where the subscriber line is located. That is, if any subscriber is accepting a telephone number of "XXX-1234", "XXX" is a unique station number of the switching center where the subscriber is located, and "1234" is a number used to indicate the physical location of the subscriber line. to be. As described above, the called number indicating the subscriber line is stored in the database DBj (where j is 1, 2, 3, 4) of each switching center.

In FIG. 2, reference numeral 20 is a local number table R_PFXTBL indicating whether a prefix exists, 22 is a local number information storage table R_PFXINFTBL, and 24 and 26 are called party number information allocated to the local number. Called party number table (R_TDNTBL) to be stored. The called party table R_TDNTBL according to the present invention is configured to store the local station number in addition to the own station number.

Before describing the operation of the number porting service according to an embodiment of the present invention in detail with reference to Figs. 1 and 2, the local station number of each of the switching stations 14 and 16 is "XXX" and "YYY", and is connected to the switching station 16. It is assumed that the subscriber STN2 is a number porting service subscriber moved to the switching center 16 with the telephone number " XXX-1234 " having the local number " XXX " In addition, the information of the number porting service subscriber STN2 is stored in the databases DB2, DB3, and DB4 in the old exchange office 14 where the subscriber STN2 is located, the new switch office 16 newly transferred, and the SCPs 18 before the number porting service is performed. Assume that there is. In this way, each of the exchanges 14 and 16 must have the following procedure in order to have the mode numbered subscriber information.

When the subscriber STN2 located at the exchange 14 moves to the other exchange 16 and wishes to receive a number porting service, each exchange processes the subscriber line information in the following manner.

The operator of the switching center 14 conducts a man machine communication (MMC) with the control processor of the switching center 14 using an operation maintenance terminal (not shown), so that the telephone number "XXX-1234" of the subscriber STN2 does not exist in the own station number, By inputting the information indicating that the other switching station 16 has been moved, the switching station 14 can recognize that the rotation information of the subscriber STN2 does not exist and has been moved to the other switching station. In addition, the operator of the switch 16 transfers the line information " XXX-1234 " of the subscriber, which has been transferred by using the number porting service from the switch 14, which is another station, as the operation maintenance terminal, to the called number in the local number information storage table R_PFXINFTBL of FIG. The local station number is entered in the table R_TDNTBL. At this time, the number porting service information of the subscriber STN2, for example, information indicating that the subscriber station 14 has moved from the switching station 14 to the other switching station 16 is registered. By the above process, the incoming call processing is performed under the state in which the subscriber STN1 of the switching station 14 is registered in the database with the information of the state shifted to the other switching station 16, respectively.

Now, when the subscriber STN1 connected to the switching center 12 dials to call the telephone number " XXX-1234 " of the numbered subscriber STN2, the dialing information is input to the switching center 12 via the path P1. The switching center 12 analyzes the received dialing information and translates it into an internal number translation processor (not shown). The switching center 12 loops the call to the switching center in which the translated telephone number is located using the internal database DB1. That is, the call is looped through the path P2 to the switching center 14 having "XXX" as its own station number.

The exchange 14 receiving the telephone number "XXX-1234" of the subscriber STN2 transmitted from the switching center 12 confirms that the telephone number "XXX-1234" has been moved to another switching center using the information stored in the internal database DB2. Thereafter, a message indicating that the subscriber has been ported to the switching station 12 as the calling party is sent out through the path P3.

Called exchange 12, which has been informed that telephone number "XXX-1234" is a number ported subscriber from exchange 14 corresponding to local number "XXX", sends a message requesting number 18 service to SCP 18 via route P4. Upon receiving the number transfer service request message from the originating exchange 12, SCP 18 transmits the information of the local number of the corresponding exchange 16, which the subscriber STN2 has moved, to the originating exchange 12 through the route P5 using the internal database DB4.

By the above operation, the originating switching center 12 that has received the local station information of the switching station 16 to which the subscriber STN2 has moved moves the call to the switching station 16 to which the corresponding number is assigned via the path P6. At this time, the switching center 12 transmits a message indicating that the call currently in progress is a number porting service call to the called station side to notify the ringing tone of the number porting service subscriber.

The final destination exchange 16 receiving the number transfer service call processing request message through the path P6 performs a separate number transfer service subscriber number translation internally to obtain the physical line information where the subscriber is located and then forwards the call to the corresponding line. .

As described above, in the present invention, the telephone subscriber can receive the incoming service as the telephone number of the switching center of the previous region as it is, thus eliminating waste of the exchange number resources, and can use the telephone number to be given once. There is an advantage that more efficient service of the incoming call of the mobile operators are frequent.

Claims (4)

The subscriber is moved when a number of exchange stations connected to the network with a database storing local and local station number information and number transfer service information, and a subscriber connected to a specific exchange among the exchange stations, moves to a switch station in another region. In the call control method of an inter-station mobile service subscriber having an intelligent network service processing unit that stores local station information of another switching station, Registering, in each of the databases in the switching stations, the number transfer information indicating that the number transfer subscriber has been moved to the switching center in another region; Storing the telephone number of the subscriber number transferred from the exchange station of the other region in a local station number table, Wherein if the call to be forwarded to the number ported service subscriber who has been ported from the other regional switching center is received, the call control method is performed by referring to the local station number table. The subscriber is moved when a number of switching stations connected to the network with a database storing local and local station number information and number transfer service information, and a subscriber connected to a specific switching station among the switching stations, move to a switching station in another region. In the call control method of an inter-station mobile service subscriber having an intelligent network service processing unit that stores local station information of another switching station, Registering, in each of the databases in the switching stations, the number transfer information indicating that the number transfer subscriber has been moved to the switching center in another region; Registering the local station number of the subscriber who has been ported to the exchange office of the other region and registering it in the called party number table of the exchange; When the information exchange calling the number ported subscriber is received from any calling exchange, transmitting the number porting subscriber information to the calling exchange side; Requesting a number transfer service from the calling party exchange to the intelligent network service processor when receiving the number transfer subscriber information; Receiving the local station number of the switching station which has been transferred from the intelligent network service processor and looping the incoming call; And calling the subscriber with reference to the called party number table of the subscriber number included in the incoming call transmitted to the specific switching center through the looping. According to claim 1, The called number table, A call control method for an inter-station mobile service subscriber, characterized in that the exchange number and the local station number are mixed and stored. According to claim 2, The called number table, A call control method for an inter-station mobile service subscriber, characterized in that the exchange number and the local station number are mixed and stored.

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