KR20000073596A - Method for screen of incoming call prefix - Google Patents

Abstract

PURPOSE: A method of performing a prefix screen for an incoming call is provided to carry out a normal call processing relating to a call only, which has a specific prefix, among calls coming from a specific route to limit the calls from other station so as to efficiently use resources of an exchange. CONSTITUTION: An exchange of a code division multiple access(CDMA) mobile communication system confirms whether an inputted call is an incoming call. If so, the exchange confirms whether a prefix is registered in an incoming route. If so, the exchange translates an incoming route number. The exchange confirms whether the incoming route number is equal to a screen route number of prefix information. If the two numbers are not equal, the exchange abandons the corresponding incoming call without processing the incoming call. If the inputted call is an outgoing call or the prefix is not registered in the incoming route, or if the registered prefix is equal to the screen route number, the exchange processes the incoming call with a general call processing.

Description

Method for screen of incoming call prefix}

The present invention relates to an incoming call prefix screen at an exchange in a CDMA mobile communication system, and in particular, only a call having a specific prefix for a call coming in through a specific incoming route allows normal call processing to be performed. An incoming call prefix screening method is provided that allows restrictions on incoming calls.

In the above, when an incoming call is made by a person in an exchange in another area to make a call to the Seoul area by using a mobile phone, the other area exchange bypasses the call to its gateway gateway. The recipient's number is transferred to the Seoul exchange through the local exchange. In this case, the person in the foreign exchange and the person in the Seoul area make a call from the foreign exchange to the local exchange, and then to the Seoul exchange. Incoming call is called outgoing call, and outgoing call is called outgoing call.

On the other hand, the conventional CDMA mobile communication exchange does not have an incoming call restriction function of selecting a prefix of a call received from an external foreign exchange and performing a call processing, thus processing all calls once received.

Therefore, in this case, an incoming call is processed even for a prepix that is incorrectly defined from another exchange.

That is, the conventional mobile communication exchange processes the incoming call without distinguishing whether it is normal or abnormal for all incoming calls, and therefore wastes time when processing incorrectly defined calls from other exchanges. Because of this, other normal calls could not be processed frequently.

Therefore, the present invention has been proposed to solve the above-mentioned problems occurring in the conventional mobile communication switch, and an object of the present invention is that only a call having a specific prefix with respect to a call coming in through a specific route can be processed normally. Therefore, the present invention provides a method for incoming call prefix screening, which allows restrictions on calls coming from other stations.

1 is a block diagram of a general mobile communication network

2 is a flow chart showing a number translation process in the present invention

3 is a view showing a prefix registration process in the present invention

4 is a flowchart showing a incoming call prefix screening method according to the present invention;

<Explanation of symbols for the main parts of the drawings>

10: mobile terminal 30: external exchange

40: gateway exchange

In order to achieve the above object, a feature of the present invention is to verify that a prefix is registered in an incoming route if the incoming call is transmitted from another station, and the prefix is registered in the incoming route. If the incoming number is translated and the incoming call route number and the screen route number of the prefix information compared by comparing the incoming call only process characterized in that it consists of the step of processing the incoming call.

As an additional feature of the present invention for achieving the above object, in the above, when the relay call transmitted from the foreign exchange is an outgoing call or a prefix is not registered in the incoming route, It further comprises the step of processing.

The above 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 by those skilled in the art.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention according to the technical spirit as described above in detail.

1 is a diagram illustrating a general mobile communication network.

As shown, the mobile terminal 10, the base station 20 for transmitting and receiving data wirelessly with the mobile terminal 10, the external switch 30 is connected to the base station 20 by wire to interface the call, A Seoul exchange station that is connected by wire with an external exchange 30 and is connected with another base station 50 by wire, is connected with the gateway exchange 40, and is connected by wire with a PSTN telephone 70. It consists of 60.

In the general mobile communication network configured as described above, when a person in the external exchange 30 sends a call to the Seoul area using the mobile terminal 10 (called number: 02-333-1234), the external exchange 30 The call is forwarded to the home gateway switch 40 so that the call is forwarded to the Seoul telephone exchange switch 60 through the home exchange.

In this case, in order to make a call between a person in the external exchange 30 and a person in the Seoul area, a call is set up from the foreign exchange (referred to as an external exchange) to the Seoul telephone exchange (60) via a local exchange (referred to as a gateway exchange).

Here, the gateway switch 40 first requests the set-up of the call with the called number of the incoming call, and for this purpose, the called number is first translated as shown in FIG.

In other words, if a request for translation of a called number is requested (S11), and the prefix of the called number is translated (S12), when the call is bypassed again by an external exchange, an outgoing call is attempted (S14). In order to have information on the destination in the own country, the location information of the destination is requested (S15).

In the case of incoming call to another country, call is introduced through the specific incoming route to the local exchange, and the call having the registered prefix of the incoming route is registered by registering a specific prefix as shown in FIG. Only allow normal call processing to be performed.

4 is a flowchart illustrating a incoming call prefix screen method according to the present invention.

As shown, the step of checking whether the incoming call is incoming call (S21), if the incoming call is checking whether the prefix is registered in the incoming route (S23), if the prefix is registered in the incoming route number Translating (S24), checking whether the translated incoming route number and the screen route number of the prefix information match (S25), and the translated incoming route route number and the screen route number of the prefix information do not match. If not, the step of discarding the relay without processing the relay call (S26), the prefix is not registered in the outgoing call or incoming route, or the registered prefix matches the screen root number of the prefix information In this case, the call processing is performed in a general call processing process (S22).

Detailed description of the incoming call prefix screen method according to the present invention made as described above is as follows.

In the above-described prefix screen, a specific prefix is registered for a call coming through a specific incoming route, so that normal call processing is performed only for a call having a registered prefix of the incoming route. As a method of processing incoming calls by discarding relay calls, it is possible to restrict incoming calls.

To this end, first, when a call is received from the outside, it is checked in step S21 whether it is an incoming call. As a result of this check, if the call is not an incoming call but is an outgoing call, the call is processed by a general call processing process (S22).

Next, if the incoming call is an incoming call entered through a specific incoming route, it is checked in step S23 whether a prefix is registered for the prefix screen function.

If the prefix is not registered as a result of this check, the process goes to step S22 described above to process the call in the general call processing process.

In contrast, when the prefix is registered, the number is translated in step S24.

Then, the incoming route route number translated in step S25 and the screen route number of the prefix information are compared to confirm whether they match each other.

As a result of this check, when the translated incoming route number and the screen route number of the prefix information are compared with each other, the process moves to step S22 and processes the incoming incoming call according to the general call processing procedure.

However, if the translated incoming route number and the screen route number of the prefix information are different from each other, the call entered in step S26 is discarded.

This makes it possible to restrict incoming calls through specific incoming routes.

While the invention has been shown and described in connection with specific embodiments thereof, it is well known in the art that various modifications and changes can be made without departing from the spirit and scope of the invention as indicated by the claims. Anyone who owns it can easily find out.

As described above, the present invention can selectively control only a call for a specific number with respect to an incoming call transmitted from another exchange, thereby controlling the use of resources in the exchange efficiently. have.

Claims (2)

In the incoming call processing method of the mobile communication switch, Checking whether or not the prefix is registered in the incoming route if the relayed call transmitted from the foreign exchange is an incoming call; Translating a route number if a prefix is registered in the incoming route; And a step of processing the incoming call only when the translated incoming call route number matches the screen route number of the prefix information. The method of claim 1, Incoming call prefix screen method, if the relay call transmitted from the other station is outgoing call or prefix is not registered in the incoming call route, processing the incoming call according to a general call processing procedure .