KR100239065B1 - Method for translating number in a private branch exchange - Google Patents

Abstract

The present invention relates to a method for translating a number in a private exchange that enables a simpler and more flexible way to implement a UDP (Uniform Dial Plan) function used in a private network. In the conventional technology, when a private subscriber moves a business or a department, If the exchange is changed, the number that was previously used cannot be taken to another exchange and cannot be used. Therefore, if the telephone number has been changed, I will notify the people around me that the telephone number has changed, or refresh the previous number. Received successor had a drawback to notify every time a call comes, but in the present invention, if the private exchange is controlled by the user of the extension of the private exchange having a terminal between the trunk-connected private exchange switching the workplace, etc. You can change the exchange with the same number. So as college freely moved between a private branch exchange connected to the trunk of the same number without the need to manually notify around the troublesome Roy changed number, it can improve in the above-mentioned drawbacks.

Description

How to translate numbers in a private exchange

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a number translation method in a private exchange, and more particularly, to a number translation method in a private exchange that enables a simpler and more flexible implementation of a UDP (Uniform Dial Plan) function used in a private network.

As is well known in the art, the number plan for performing the private UDP function currently used is constructed using an access code and an insert / erase digit function, so that it is possible to establish a private network by connecting two or more private exchanges. At the same time, different exchanges should have different numbers.

For example, if the exchange A between the private exchanges connected to the relay line is set to 5xxx, the private exchange B needs to be set to 6xxx, so that the private exchange network is installed and the call is connected between the private exchanges through the relay line like an extension.

If exchange A, which is a private exchange, uses 5xxx numbers, and exchange B uses 6xxx numbers, a call request for "5678" is entered into exchange A. First, the first digit "5" is entered. If the number is translated and the result is an access code, it is determined that the 5678 is called and the subscriber is not present in the exchange A. Busy tone or busy announcement is connected.

However, in the prior art, when a private subscriber moves a business or a department, if the exchange becomes different, the person whose phone number is changed is changed by changing the number previously used by the user to another exchange. There was a flaw in notifying the people around them, or the successor who received a new number before the change, to be notified every time a call came in.

The present invention has been made to solve the above-described drawbacks of the prior art, the access code is assigned to the corresponding access code by translating the access code of the extension number entered between the private exchanges connected to the relay line constituting the private switching network system If there is no exchange at the exchange, the purpose is to provide a number translation method in the private exchange that connects between subscribers by accessing the corresponding exchange by identifying the exception number of the database embedded in the number translation unit.

In order to achieve the above object, according to the present invention, when an incoming subscriber call request is received to the corresponding private exchange set as the access code of the called party through the corresponding private exchange of the calling party, and the incoming call request is received, the call number translation request of the received call is received. And a first translation step of translating the called party number to determine whether the corresponding called party number exists, and if the called party does not exist in the private exchange as determined in the first judgment step, the number of the corresponding exchange. In the second judging step of determining whether there is the called party number stored in the database in the translation unit, and if the called party number exists as determined in the second judging step, the number translator is connected to the subscriber call control unit with a relay line. The called party is a subscriber at another private exchange Informing the route information of the other private exchange together with the information, and a third judgment step of determining whether the telephone number exists in the database by requesting a number translation request from the number translation unit of the corresponding exchange with the stored route number of the corresponding exchange; If the number is determined in the third determination step and the number is in the database, the number translation in the private exchange comprising the step of connecting the call with the calling subscriber by opening the call path of the number; Provide a method.

1 is a block diagram of an exchange system suitable for explaining a number translation method according to the present invention;

2 is a block and connection diagram of each private exchange suitable for connecting a call between a subscriber belonging to a first private exchange and a subscriber belonging to a second private exchange according to FIG. 1;

3 is a flowchart illustrating a number translation step in a private exchange in accordance with the present invention.

<Description of the code | symbol about the principal part of drawing>

110, ..., 112, ..., 114: 1st, 2nd, nth private exchange

116: private telephone network

120, 122, ..., 124: 1st, 2nd, n-th national exchange

126 public telephone network

202 and 212: first and second subscriber call controllers

204, 214: first and second number translation unit

206 and 216: first and second relay line matching units

The above and other objects and various advantages of the present invention will become more apparent from the preferred embodiments of the invention described below with reference to the accompanying drawings.

The configuration of the present invention comprises a plurality of first, ..., second, ..., n-th private exchange (110, ..., 112, ..., connected with terminals of a private network to accommodate subscribers). 114) a private telephone network 116 capable of physically connecting a private network with a relay line to connect a private telephone exchange system between private switching systems 110, ..., 112,... A plurality of first, second, ..., n-th local exchanges 120, 122, ..., 124 that accept subscribers, and a plurality of private exchanges 120, 122, ... , 124, public telephone network 126 for physically connecting the relay lines, first subscriber call controller 202 for controlling subscriber calls in first private exchange 110, and second private exchange 112; Incoming / outgoing calls under the control of the second subscriber call control unit 212 controlling the subscriber's call within the first private exchange 110 and the first subscriber call control unit 202 described above. Number-translating the number of incoming / outgoing subscribers under the control of the second subscriber call control unit 212 described above in the first number translation unit 204 for translating the number of subscribers and the second private exchange 112. Under the control of the second subscriber translator 214 and the first subscriber call control unit 202 and the first number translator 204 within the first private exchange 110, a call through the relay line is matched. Call input through the relay line under the control of the first subscriber line matching unit 206 and the second subscriber call control unit 212 and the first number translation unit 204 in the second private exchange 112. And a second relay line matching unit 216 for controlling the call of the subscriber in the private exchange which controls the call of the subscriber which inputs / outputs to match the input / output.

With reference to the accompanying drawings of Figure 1 will be described in detail a preferred embodiment of the present invention.

The plurality of first, ..., second, ..., n-th private exchanges 110, ..., 112, ..., 114 are connected to a national exchange and are connected with a plurality of private subscribers. It provides private subscribers with private service and general exchange service, and connects the call through another relay line to another private exchange connected with private telephone network 116 so as to interwork with the private exchange in its own country.

The private telephone network 116 physically connects the private network to a relay line to provide a line that can be connected between the private switching network systems without passing the call between the private switching centers, and a plurality of private switching networks 110, ..., 112, ..., 114 information between the private exchanges connected by the relay line as available as a private exchange.

The plurality of first, second, ..., n-th national exchanges 120, 122, ..., 124 accommodate a plurality of general subscribers and a plurality of private exchanges, and between the general subscribers and within the general subscriber and the private exchange. The connection between the subscribers to smoothly connect the call between the subscribers, and connects the call to other national exchanges through the public telephone network (126).

The public telephone network 126 is a physical line that connects the local exchanges 120, 122, ..., 124 with a relay line, and each of the national exchanges 120, 122, ... connected with the public telephone network 126 with a relay line. 124, the subscribers controlled by the 124 are connected to the public telephone network 126 when they are not a local exchange.

FIG. 2 is a block and connection diagram of each private exchange suitable for connecting a call belonging to a subscriber belonging to the first private exchange 110 and a subscriber belonging to the second private exchange 112, and the first subscriber call. The control unit 202 controls the call of the subscriber in the first private exchange 110, and executes and manages the exchange connection control between the private subscribers and between the private subscribers and the local subscribers.

Since the second subscriber call controller 212 plays a role similar to that of the first subscriber call controller 202 in the second private exchange 112, a description thereof will be omitted.

The first number translation unit 204 translates the number of the incoming / outgoing subscriber by the control of the first subscriber call control unit 202 described above in the first private exchange 110, and if the call is an premises, the first number. Under the control of the subscriber call control unit 202, the domestic subscribers are connected through the telephone line of the premises, or, in the case of an outgoing call, the private switching network via the telephone line switch through the first relay line matching unit 206. Or to a local exchange.

Since the second number translation unit 214 plays a role similar to that of the above-described first number translation unit 204 under the control of the second subscriber call control unit 212 described above in the second private exchange 112, the Description is omitted.

The first relay line matching unit 206 is controlled by the first subscriber call control unit 202 and the first number translation unit 204 in the first private exchange 110 to input / output a call through the relay line. Input / output by matching / output call.

The second relay line matching unit 216 has a role similar to that of the first relay line matching unit 206 under the control of the second subscriber call control unit 212 and the first number translation unit 204 in the second private exchange 112. Since the description thereof is omitted.

Referring to Fig. 3, the step of translating the number in the private exchange will be described in detail. The calling party's call request is received through the corresponding private exchange of the calling subscriber to the corresponding private exchange set as the access code of the called subscriber (step 302). .

For example, when the access code of the calling party and the called party and the calling party are in the same exchange, the incoming request is received from the same exchange to the same exchange.

The subscriber call controller requests translation of the called party number of the received call (step 304).

The called party number is translated to determine whether the called party number exists (step 306).

If it is determined in step 306 that the called subscriber exists, the call is connected between the subscribers so that the call is possible (step 308).

If it is determined in step 306 that the called party does not exist in the corresponding private exchange, it is determined whether there is the called party number stored in the database in the number translation unit of the exchange (step 310).

If it is determined in step 310 that the telephone number does not exist, an error message is sent to the calling subscriber to inform the calling subscriber that the call failed (step 312).

If it is determined in step 314 that the telephone number exists, the number translator informs the subscriber call controller of the route information of the other private exchange together with the called subscriber information in the other private exchange in which the corresponding subscriber connected to the relay line exists. Step 314).

If a call is inputted through the trunk line matching unit, the private telephone network 116, and the trunk line matching unit of the private exchange in which the called party exists, the route number is stored with the corresponding switching station. It is determined whether the number exists in the database in the number translation unit (step 316).

If it is determined in step 316 that the number is not in the database, an error message is sent to the calling subscriber to indicate that the call failed (step 312).

If it is determined in step 316 that the number is a number existing in the database, a call channel of the corresponding number is opened to connect a call with the calling subscriber (step 318).

As an example of the above-described steps, a calling exchange is a subscriber of the nth private exchange 112, and the called subscriber has his or her phone number (e.g., set to 5678) as the first private. A case where the exchange is changed from the exchange 110 to the second private exchange 112 will be described.

If any subscriber of the nth private exchange 112 enters " 5678 " and requests a call to the subscriber of the first private exchange 110, the first subscriber call controller of the first private exchange 110 receives the received call. When the called party number translation is requested, the first number translation unit 204 translates the number and determines whether the called party number 5678 exists in the database of the first number translation unit 204.

Since the called party does not exist in the first private exchange 110, it can be seen that the called party number exists in the first private exchange 110.

The first private exchange 110 is connected to the second private exchange 112 through the first relay line matching unit 206 and the second relay line matching unit 216.

When the second subscriber call control unit 212 of the second private exchange 112 determines the input route information and requests the number translation to the second number translation unit 214, the second number translation unit 214 translates the number. Recognizing that a subscriber with an extension number of "5678" exists in the corresponding exchange, it connects the call of the called party with the calling party with the extension number of "5678".

The principles of the invention have been described above in connection with specific devices, which are described by way of example only, and are not limited to the spirit of the invention as described in the appended claims.

As described above, the present invention can change the switch with the same number even if the private exchange of the private exchange having a terminal is changed between reasons such as moving the workplace between the private exchanges connected by the trunk can change the switch with the same number It is possible to move freely between private exchanges trunked by the same number without having to announce the numbers around.

Claims (1)

Requesting translation of the called party number of the received call when the incoming subscriber call request is received by the corresponding private exchange set as the access code of the called subscriber through the corresponding private exchange of the calling party and the incoming call request is received; A first determining step of translating the called number and determining whether the corresponding called party number exists; A second judging step of judging at the first judging step, if the called party does not exist in the corresponding private exchange, determining whether there is a called party number stored in a database in the number translation unit of the exchange; If the called party number is determined by the second judging step, the number translator is connected to the subscriber's call control unit with the called party in the other private exchange where the called party exists. Informing route information; A third determination step of requesting a number translation request from the number translation unit of the corresponding exchange with the stored route number of the corresponding exchange and determining whether the corresponding telephone number exists in the database; If the number is determined in the third determination step and the number is a number existing in the database, the number in the private exchange comprising the step of connecting the call with the calling subscriber by opening the call path of the number. How to translate.

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