KR0182635B1 - Number translation processor and method thereof - Google Patents

Abstract

The present invention provides a number translation apparatus and method for translating a number so that a translation result can be obtained from a source processing unit without using a number translation processor in the case of a station number having a high frequency of use in an electronic exchanger. The apparatus according to the present invention includes a cache memory in the originating processor in the call processing processor, stores a translation result for a frequently used station number as a database structure, and transmits an address number of a terminating subscriber to an originating party of any originating subscriber. If a station number or a station number that does not contain an area code) is received, the cache memory is first searched, and if it exists in the cache memory, the number of times of translation of the corresponding station number is increased, and the corresponding station number translation result is read from the cache memory to process the call. If there is no translation of the station number corresponding to the cache memory, Number translation processing and storing the number translated result in the cache memory. Therefore, when an attempt is made to receive an incoming caller who has a high frequency of use, the number translation can be performed without going through the number translation processor, which can relatively reduce the load of the number translation processor, and thus can expect fast number translation.

Description

Number Translation Device and Method in Electronic Switching System

1 is a schematic system block diagram of an electronic switching system for explaining the conventional number translation process,

2 is an operation flowchart of a number translation process performed in the calling processing unit shown in FIG.

3 is an operation flowchart of a number translation process performed in the number translation processor NTP of FIG.

4 is a functional block diagram of an electronic switch having a number translation apparatus according to the present invention,

5a and b are flowcharts illustrating operations of an outgoing process in the number translation method according to the present invention.

* Explanation of symbols for main parts of the drawings

400: call processing processor (ASP) 401: call processing unit

402: area code and station number receiving unit 403: area code and station code search unit

404: cache memory 405: area code and station code translation request unit

406: area code and station number data update unit 407: incoming call number and incoming call translation request unit

408: switch connection and call processing unit 410: number translation processor

411: area and station number translation processing unit 412: called party translation processing unit

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a number translation apparatus and method in an electronic switchboard, and more particularly, to a number translation apparatus and method for reducing the amount of work of a number translation processor using pre-translation information for a high number of stations.

Existing electronic switchboards use the database for number translation within the Number Translation Processor (NTP) when the calling subscriber attempts to call and calls the called subscriber. It was.

FIG. 1 is a schematic functional block diagram of an existing electronic switch that performs number translation for a called party, as described above. When the calling subscriber attempts to make a call and authorizes the called party's number, the call processing processor (Access Switching) In the calling processing unit 101 in the processor (100), the receiving party's number is divided into area codes, station numbers, called numbers, and the like, individually received, and the number translation processor 110 is responsible for requesting number translation. In addition, the block in charge of receiving the number translation processor 110 analyzes the respective numbers and notifies the call processing unit 101 of the result so that normal call processing proceeds.

2 is an operation flowchart of the originating processor 101 of FIG. 1, and FIG. 3 is an operation flowchart of the number translation processor 110 of FIG. 1 with reference to FIGS. In more detail, it is as follows.

That is, the originating process unit 101 does not include the area code or area code including the area code of the destination subscriber from any caller through the local number and station number translation receiving and translation requesting unit 102 while waiting for number reception in step 201. When receiving the station number (hereinafter referred to as the station number), the process proceeds to step 203 through step 202 and the number translation processor 110 through the area number and station number translation receiving and translation requesting unit 102 in step 202. A translation is requested for the received station number, and the process proceeds to step 204 to maintain a standby state.

On the other hand, if the number translation processor 110 is requested to translate the predetermined number to the area code and station number translation processing unit 111 in the message receiving standby state of step 301, the process proceeds from step 302 to step 303 After the translation process is performed, the process proceeds to step 304 and the returned content is notified to the originating processor 101 and returned. The information is sent to the area code and station number translation receiving and translation request unit 102 of the transmission processing unit (102).

When the area number and station number translation receiving and translation requesting unit 102 is notified of the translation result from the number translation processor 110, the process proceeds from step 205 to step 206 to receive the notified translation result and the called party number translation. After the transmission to the request unit 103, the incoming call number reception wait state is maintained.

If the incoming call is received by the called party and the called party translation request unit 103 in the called party's call waiting state, the process proceeds from step 207 to step 208 where the number translation request is made by the number translation processor 110. Thereafter, the process proceeds to step 209 to maintain a waiting state for the translation of the called party.

When the incoming translation request signal is received by the destination number translation processing unit 112 in the message reception standby state of step 301, the number translation processor 110 proceeds from step 305 to step 306 to perform the destination number translation process. In step 307, the translation result of the called party is notified and returned. The notification is sent to the called party's number and the called party's translation request unit 103.

When the called party number translation result is notified in step 210, the called party number and the called party number translation requesting unit 103 transmit the translated number of the called party number and area number and the station number translated from the translation request and translation request unit 102. The switch is connected and transmitted to the processing unit 104 during a call. During the call processing unit 104 proceeds with the call so that the call proceeds between the called party having the authorized station number and the called party and the corresponding subscriber, and is returned.

As described above, in order to translate a number for one incoming subscriber, the number translation request is made not only several times by the number translation processor 110, but also because the number translation processor 110 must process the required number translation one by one. There is a possibility that an overload occurs in the translation processor 110. The likelihood of this overload increases as the number of calls attempted increases.

The present invention has been made in order to solve the above-described problems, and the cache memory in the transmission processing unit of the electronic switchboard to provide a translation result of the high frequency of the station number (station number including area code or area code not including area code) It is an object of the present invention to provide a number translation apparatus and method that can reduce the amount of work of the number translation processor when a call connection attempt is made.

In order to achieve the above object, an apparatus according to the present invention is a number translation apparatus for translating a called party's number from an originating subscriber in an electronic telephone exchange, for receiving a station number of a called party called from an originating subscriber. Area code and station number receiving section, cache memory storing database translation results of at least one or more station numbers frequently used by calling subscribers, and searching whether the station number received through area code and station number receiving section is stored in cache memory. If the translation result corresponding to the area code and station number search unit and the station number received from the cache memory is not searched, the area code and station number requesting a translation of the received area code and station number transmitted from the area code and station code search unit When the translation result of the station number is authorized from the translation request unit, area code, and station number request unit, When the result is updated so that the result can be stored in the cache memory, and the translation result of the station number is applied from the area code and the station number retrieval unit, it is received from the area code and station data update unit and the sender without transmitting the update process for the cache memory. Receiving number called and receiving number translation requesting part, which requests the number translation request of called number and outputs translation result of called number notified by number translation request and station number transmitted from area code and station data update unit An outgoing processing unit configured to include a switch connection and a busy processing unit for performing call processing with the translation result of the station number and the incoming number output from the first receiving and the receiving party translation requesting unit; It is required by the area code and station number translation processing department, the called party receiving and the called party translation requesting unit to perform translation processing for the station number requested by the area code and station number translation request unit and to notify the area code and the station number translation request part of the translation. And a number translation processor configured to include a called party translation processing unit for performing the translation of the called party number and notifying the called party of the incoming call and the translation request of the called party.

In order to achieve the above object, the method according to the present invention is a number of an electronic switch having a calling processing unit for processing a call generated from an originating subscriber and a number translation processor for translating a number required by the calling processing unit. A translation method comprising the steps of: retrieving whether a translation result corresponding to a received station number exists among station number translation information previously stored in a cache memory provided in the origination processing unit when a subscriber's station number is received from a calling party; As a result of the search, if there is data in the cache memory, increasing and reading the number of uses for the translation result of the corresponding station number; Requesting translation of the station number received by the number translation processor if there is no data in the cache memory as a result of the search; Checking whether there is an empty space in the cache memory when a translation result requested in the requesting step is received; A first recording step of recording the station number translation result received in the empty space, if the empty space exists; If the empty space does not exist, searching for and deleting the storage order having the smallest number of times of use, and storing the storage sequence corresponding to the station number translation result in the deleted area; Setting a frequency of use for data recorded in the first recording step and the second recording step to zero; Requesting the translation of the called party to the number translation processor when the called party receives the called party number for the called party; In the reading step, the process of call processing is performed by using one of the station number translation result and the translation result for the called party number among the station number translation result read and the station number translation number set to 0.

Hereinafter, an embodiment according to the present invention will be described.

4 is a functional block diagram of an electronic switching system having a number translation apparatus according to the present invention, wherein a call processing processor 400 and a call processing processor 400 for processing a call generated from a subscriber are provided. It is composed of a number translation processor 410 for translation processing.

The call processing processor 400 shown in FIG. 4 includes an outgoing processing unit 400 and an incoming call processing unit not shown, particularly for the outgoing subscriber. Area number and station number receiving unit 402 for receiving a station number (hereinafter referred to as station number) that does not include a station number or area code, and a cache memory for storing translation results of a predetermined number of frequently made station numbers ( 404), the area code and station number search unit 403 for searching the area code and the country code of the called party; 405), the area code and station number data update unit 406 for updating the station number translation result stored in the cache memory 404, and the same called number receiving and receiving number translation request unit as shown in FIG. (407), And a switch connection and busy processing unit 408.

The number translation processor 410 shown in FIG. 4 is configured to include the area code and station number translation processor 411 and the called number translation processor 412, as shown in FIG.

5a and b are flowcharts illustrating the number translation method according to the present invention.

Next, the operation of the embodiment of the present invention will be described in detail with reference to FIGS. 4 and 5a and 5b.

When an arbitrary station number is received by the area number of the originating processor 401 and the station number receiving unit 402 in the receiving state of the station number in step 501 (step 502), the received station number is received by the area number and the station number searching unit 403. To send). In step 503, the area code and station number search unit 403 searches whether there is a number translation result corresponding to the currently applied station number in the cache memory 404. In the cache memory 404, a plurality of translation results for frequently used station numbers are stored in a database structure.

If the translation result of the corresponding station number is not retrieved from the cache memory 404, the area code and the station number search unit 403 determine that the translation result of the station number corresponding to the cache memory 404 is not stored, and step 504. In step 505 to transmit the station number received to the area code and station number translation request unit 405 as before. Accordingly, the area code and station number translation requesting unit 405 requests the number translation of the area code received by the area code and the station number translation processing unit 411 in the number translation processor 410, and proceeds to step 506 to perform the station number translation. Maintain standby for

In step 507, if the translation result of the station number is notified from the area code and the station number translation processing unit 411 to the area code and the station number translation requesting unit 405, the area code and the station number translation requesting unit 405 is assigned to the translated station number. Information is transmitted to the area code and station data update unit 406. Accordingly, the area code and station data update unit 406 proceeds to step 508 to check whether there is an empty space in the cache memory 404 for storing data.

As a result of the check, if there is an empty space, the area code and station number data updating unit 406 proceeds to step 509 and stores the storage order number of the station number translation result to be currently stored in the cache memory 404 and corresponds to the corresponding empty space. The translation of station number is included. The storage order number is, for example, information for designating that the station number translation result to be stored currently is the 11th station number translation result when the total number of station numbers currently stored in the cache memory 404 is stored. In step 511, the area code and station number data updating unit 406 sets the number of times of translation of the station number currently stored in the cache memory 404 to zero.

On the other hand, if there is no empty space in the cache memory 404 at step 508, the area code and station number data updating unit 406 proceeds from step 508 to step 512 and is stored in the cache memory 404. In step 513, the storage sequence number (or storage number) having the smallest number of times of the station number translation result is searched. In step 513, the area code and station number data updating unit 406 deletes the station number translation result corresponding to the searched storage order number and proceeds to step 514 to store the current station number translation result in the deleted area. At this time, the storage sequence number corresponding to the station number translation result stored in step 509 is also stored in the cache memory 404. In step 511, the number of times of use is set to zero.

After such an update process, the area code and station number data update unit 406 transmits the translated area code and station number to the called party's incoming and outgoing number translation request unit 407 as before, and the originating processor 401 receives the incoming call. In step 516, the reception standby state is maintained.

Then, when the search result in step 504, if there is a translation result of the station number corresponding to the cache memory 404, the area code and the station number search unit 403 proceeds to step 515 to the translation result of the corresponding station number Increase the number of uses for and read the translation result of the corresponding station number and transmits to the area code and station data update unit 406. Area code and station number data update unit 406, if the translation result for the station number is transmitted from the area code and station code search unit 403, immediately receiving the recipient number and translation of the called party number without the update process for the cache memory 404 Sending to the request unit 407, the originating processor 401 maintains the incoming call reception waiting state (step 516).

When the called party is received in the called party waiting state, the called party receiving and the called party translation request unit 407 proceeds from step 517 to step 518 and the number is translated to the called party translation processor 412 in the number translation processor 410. A translation is requested, and the flow proceeds to step 519 to maintain the incoming translation waiting state.

When the called party translation result is notified from the called party translation processor 412, the called party receiving and the called party translation request unit 407 transmits the translated station number and the called party number to the switch connection and the call processor 408 during transmission. The call process proceeds to establish a call connection attempted by the subscriber (step 521).

As described above, the present invention stores a translation result for a frequently used station number (a station number including an area number or a station number not including an area number) in a cache memory provided in an originating processor in a call processor in a database structure. By implementing to operate, the station number of the receiving party with high frequency of use can be solved at the level of outgoing processing unit without going through the number translation processor, which can reduce the load of the number translation processor to some extent, and expect faster number translation processing than before. .

Claims (4)

In the number translation apparatus for translating the called party's number from the calling subscriber in the telephone exchange, the area code and the station number receiving unit 402 for receiving the called party's station number called from the calling subscriber. A cache memory 404 for storing a translation result of at least one or more station numbers frequently used by the calling subscriber, and the station numbers received through the area code and the station number receiving unit 402 are stored in the cache memory 404. If the translation result corresponding to the received station number is not searched in the area code and station number search unit 403 and the cache memory 404 for searching whether it is located, it is transmitted from the area code and station number search unit 403. Translation of the area code from the area code and the area code translation requesting unit 405 and the area code and the station code translation requesting unit 405 for requesting translation of the received area code and country code When is applied, the transmitted station number translation result is updated to be stored in the cache memory 404. When the station number translation result is applied from the area code and the station number search unit 403, Area code and station data update unit 406, which transmits without updating, requests the number translation request of the called party received from the calling subscriber, and the translation result of the called party notified by the number translation request and the area code and Incoming number reception and called number translation request unit 407, which outputs a translation result for the station number transmitted from the station number data update unit 406, the station number and the incoming number output from the incoming number reception and called number translation request unit 407 An outgoing processing unit 401 configured to include a switch connection and a busy processing unit 408 for performing call processing as a result of translation; Area number and station number translation processing unit 411 for translating the station number requested by the area code and station number translation request unit 405 and notifying the area code and station number translation request unit 405 to the translation result. The called party translation processing unit 412 for performing the translation processing of the called party requested by the called party and the called party translation request unit 407 and notifying the called party of the called party and the called party translation request unit 407. And a number translation processor (410) configured to include, wherein the station number is a station number including the area number or any station number that does not include the area number. The data storage unit 406 of claim 1, wherein the area code and station data update unit 406 searches for and deletes the storage number having the smallest number of times of use if there is no free space in the cache memory 404. The station number translation result transmitted from the area code and the station number translation requesting unit 405 is stored, and if the space exists, the station number corresponding to the storage order number is stored in the empty space, and then A number translation apparatus for an electronic switching system characterized in that the use frequency is set to zero. In the number translation method of an electronic switch having a calling processor 401 for processing a call originating from the calling subscriber and a number translation processor 410 for translating the number required by the calling processor 401. In response to receiving the subscriber's station number from the calling subscriber, it is determined whether there is a translation result corresponding to the received station number among the station number translation information previously stored in the cache memory 404 provided in the calling processor 401. Searching; Increasing and reading the number of uses for the translation result of the corresponding station number if data exists in the cache memory 404; Requesting a translation of the station number received by the number translation processor 410 if there is no data in the cache memory 404 as a result of the search; Checking whether there is an empty space in the cache memory 404 when a translation result requested in the requesting step is received; A first recording step of recording the station number translation result received in the empty space, if the empty space exists; If the empty space does not exist, searching for and deleting the storage order having the smallest number of times of use, and storing the storage order corresponding to the translation result of the station number in the deleted area; Setting a frequency of use for data recorded in the first recording step and the second recording step to 0; Requesting a translation of the called party to the number translation processor 410 when the called party receives the called party number; And performing a call processing by using the one station number translation result and the translation result for the called party number among the station number translation result read in the reading step and the station number translation result set to 0. And the station number includes a station number including an area code or a station number not including the area code. The method of claim 3, wherein the station number translation result stored in the cache memory is stored around a station number having a high frequency used by the calling subscriber.