KR20020053225A - Method for rejecting call of specific subscriber in exchange system - Google Patents

Abstract

PURPOSE: A method for denying a call of a specific subscriber in a switching system is provided to automatically interrupt a call generated from the specific subscriber, thereby preventing the inconvenience and time waste of subscribers. CONSTITUTION: A central process unit senses that a calling subscriber dials the receiving subscriber for calling(201) and examines the calling subscriber is registered at a receiving-denial table of the receiving subscriber(202). If registered, the central process unit denies a call process request of the calling subscriber and notifies the receiving subscriber that the calling is not available(203). The call of the calling subscriber is processed as busy line(204) and the call process is terminated(205). If not registered, the central process unit forms a traffic channel between the subscribers(206). It is determined whether the receiving subscriber requests receiving-denial(207). If not request, the central process unit maintains a general call process state is maintained(208) and terminates the calling according to hook-on state of the subscribers(209). If request, the central process unit flashes a hook(210) and examines whether receiving-denial function number designed in a switching system is inputted(211). If inputted, the central process unit registers a telephone number of the calling subscriber at the receiving-denial table(212) and reports call termination to the calling subscriber(213,214).

Description

Method of rejecting call of specific subscriber of exchange system {METHOD FOR REJECTING CALL OF SPECIFIC SUBSCRIBER IN EXCHANGE SYSTEM}

The present invention relates to a call service method of a switching system, and more particularly to a method that can reject a call of a particular subscriber.

In general, when an incoming call occurs, the switching system connects the calling party and the called party of the corresponding call to service the call. In this case, the switching system checks the status of the called party and notifies the called party of the called party if it is in the idle state, whereby the called party generates an incoming ring. And the subscriber of the called party hooks off the phone when the incoming ring signal is generated to enter the call state.

At this time, if a specific subscriber frequently or maliciously makes a phone call, the subscriber of the called party must answer each time. For example, if subscriber A knowingly intentionally continues to call subscriber B and is inconvenient, subscriber B must unplug the phone cord or not answer the call even if the ring continues to ring to prevent subscriber A from calling. Frequent calls or malicious calls, as described above, are damaging to the privacy of the telephone subscribers, and there is an inconvenience of having to waste a lot of time to respond to them.

Therefore, the conventional call service has no function of rejecting a call received during a call between subscribers, and therefore has no choice but to continuously receive a wrong call continuously. Therefore, in order to solve the inconvenience of the conventional call service as described above, it should be possible to selectively perform the service for the incoming call according to the selection of the telephone subscriber.

It is therefore an object of the present invention to provide a method for rejecting an outgoing call of a particular subscriber by the selection of a telephone subscriber in an exchange system.

Another object of the present invention is to provide a method for registering a call generated from a subscriber of a corresponding call as a rejection call when a call is received in an exchange system.

1 shows the structure of an exchange system;

2 is a flowchart illustrating a process of refusing reception for a specific subscriber in a switching system according to an embodiment of the present invention.

An embodiment of the present invention relates to a subscriber service method of rejecting a call of a specific subscriber when processing a call between subscribers in an exchange system. That is, an embodiment of the present invention provides a specific subscriber rejection function in a switching system, so that the switching system automatically blocks a call originating from a specific subscriber during a call service, so that the subscriber can use this function. It is possible to prevent inconvenience and waste of time, so that better service can be obtained from the exchange.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the same parts in the figures represent the same reference signs wherever possible.

1 is a diagram illustrating a structure of an exchange system capable of rejecting a call of a specific subscriber according to an embodiment of the present invention.

Referring to FIG. 1, the central processing unit 111 controls the call switching of the switching system and controls the overall operation of the switching system to provide various services to the user. The memory 112 stores programs and initial service data of the central processing unit 111 for performing basic calls and various functions, and temporarily or permanently stores data processed by the central processing unit 111. The memory 112 includes a ROM for storing program and service data and a RAM for temporarily or permanently storing data generated during program execution. The clock circuit 113 is a clock chip IC that generates current time data and outputs the same to the CPU 111.

The switching circuit 114 switches various tone and voice data under the control of the CPU 111. The subscriber circuit 115 supplies a call current to the telephones STN1 to STNn under the control of the central processing unit 111 and simultaneously interfaces a signal between the telephones STN1 to STNn and the switching circuit 114. The ring generation signal 116 generates a ring signal and supplies it to the subscriber line. The tone generator 117 generates various tones under the control of the central processing unit 111 and outputs them to the switching circuit 114. The trunk line circuit 118 forms a call loop with the trunk line by occupying the trunk line under the control of the central circuit device 111, and interfaces a signal between the trunk line and the switching circuit 114. Here, the trunk line refers to a line that connects the trunk line circuit 118 and the national exchange. The DTMF receiver 119 analyzes the DTMF signal input from the switching circuit 114, converts the DTMF signal into a digital signal, and outputs the digital signal to the central processing unit 111. Here, the DTMF signal input to the DTMF receiver 119 through the switching circuit 114 becomes a telephone number where the trunk line subscribers STN1 to STNn are generated. The DTMF transmitter 120 converts the digital data output from the CPU 111 into a DTMF signal and outputs the DTMF signal to the switching circuit 114.

The exchange system as shown in FIG. 1 may be a local exchange or a private exchange. At this time, in the case of the local exchange, it should be possible to receive the telephone number information of the calling subscriber generated from the exchange at the calling side. In addition, even in the case of a private exchange, the exchange should be able to receive the telephone number information of the calling subscriber who requested the call from the local exchange. When such an exchange requires a call rejection function from subscribers ST1-STn connected to the subscriber circuit 115, the exchange should register the telephone number information of the corresponding calling subscriber in the internal reception rejection table. In addition, the exchange system checks the phone number information of the originating subscriber in the call rejection table during the call service, rejects the service of the call if the subscriber is registered in the call rejection table, and calls the call only if the subscriber is not registered. It should be connected to the called party. The reception reject table may be provided in the RAM area of the memory 112 of the exchange system.

2 is a flowchart illustrating a process in which a subscriber in a switching system rejects a specific subscriber's telephone and designates a rejection according to an embodiment of the present invention.

The reception rejection method of FIG. 2 will be described with reference to the configuration of FIG. 1. Here, it will be described on the assumption that the STN1 is the calling subscriber and the STN2 is the called subscriber.

First, when the subscriber STN1 hooks up, dials, and requests a call from the STN2 subscriber, the CPU 111 detects this in step 201 and checks whether the STN1 is a subscriber registered in the reception table by STN2 in step 202. The reception rejection table may be configured as shown in Table 1 below. That is, the central processing unit 111 stores the reception number table allocated to the specific area of the memory unit 112 in correspondence with the telephone number information of the subscriber who rejects the hand signal of the specific subscriber and the telephone number of the subscriber to be rejected. When the incoming call is generated to the subscriber, the CPU 111 checks the reception rejection table as shown in Table 1 in step 202 to determine whether the incoming call is generated by the subscriber.

turn Subscriber's phone number requesting unsubscribe Unsubscribed subscriber's phone number One 123-4567 876-5432 2 123-4567 765-4321 3 123-4567 654-3210 4 987-6543 234-5678 5 987-6543 345-6789 ... ... ... N-1 N

Therefore, in step 202, the central processing unit 111 receives the STN2 subscriber from the subscriber's telephone numbers which requested the rejection by referring to the reception rejection table, and the STN2 subscriber exists in the rejection table. Check whether there is STN1 among the rejected subscribers. In this case, if the STN1 exists, the STN2 has rejected the STN1. Therefore, the CPU 111 shifts to step 203 to reject the call processing request of the STN1 subscriber and notifies the STN2 that the STN1 cannot be called. In step 205, the STN1 subscriber is busy and the call processing ends in step 205. FIG.

However, in step 202, the central processing unit 111 transitions to step 206 to form a communication path between the STN1 and STN2 subscribers, thereby allowing the STN1 and STN2 to make a call. In this case, if the STN2 subscriber's call rejection is not required during the call in step 207, the CPU 111 transitions to step 208 to maintain the general basic call processing state, and then, according to the action (hook-on) of the STN1 and STN2 subscribers. End the call in the state. However, if the STN1 requests the rejection registration in step 207, the CPU 111 hook-flashes in step 210 and checks whether the reject function number specified in the exchange system is input in step 211. In this case, when the reception rejection function number specified in step 211 is input, the CPU 111 registers the STN1 subscriber telephone number in the reception rejection table of the memory unit 112 in step 212. At this time, in the rejection table, as shown in Table 1, the subscriber STN1 requesting the rejection and the telephone number of the rejected subscriber STN2 are associated with each other and registered in the subscriber rejection item. Thereafter, the central processing unit 111 notifies the STN1 subscriber of the termination of the call to the STN1 subscriber in step 213, where the STN1 subscriber hears a busy tone and is released upon hook-on.

In addition, the STN2 subscriber hears a dial tone indicating that registration is completed when the function number is input. The STN2 subscriber then releases the call or hooks it up.

In addition, such a reception rejection function can be implemented in a telephone. That is, in the case of a phone capable of receiving telephone information of the calling subscriber from the exchange, the program shown in FIG. Check the phone number information and register it in the rejection table. In addition, the above-described reception denial service method has been described taking the case of registering the phone number information of the calling subscriber for rejecting a call in a call state, but the phone subscriber knows the phone number information of the subscriber for rejecting the call. If there is, it is also possible to register the subscriber's telephone number.

As described above, the rejection of a specific subscriber has been described in detail with reference to a flowchart. In particular, in case of releasing the rejected subscriber, the reception status of the subscriber is terminated by requesting the operator to delete the subscriber.

As described above, in the embodiment of the present invention, if the exchange system provides a function of rejecting a specific subscriber, the subscriber can effectively solve the problem of the prior art described above by the subscriber himself using this function. As a result, it is possible to prevent inconvenience and waste of time for the subscriber, and the subscriber can be provided with improved and reliable service from the exchange.

Claims (2)

In the call service method of the switching system, When a call occurs, it checks the rejection table and checks whether it is a rejected subscriber requested by the called party. Connecting the call between the calling party and the called party if the subscriber is not a denial subscriber; And registering the telephone number of the calling subscriber in the reception rejection table and ending the call when requesting a reception rejection function of the called subscriber in the call connection state. In the call service method of the switching system, When the call occurs, the phone number of the called party is checked to check whether the subscriber is registered in the reception rejection table, and when the registered subscriber is checked, the phone number of the calling subscriber is rejected by the called party. , If the calling subscriber is a subscriber rejected by the called subscriber, stopping and terminating the call service; otherwise, connecting the call between the calling and called subscriber; Registering the calling subscriber's telephone number with the calling subscriber's telephone number in the call rejection table and terminating the call when the called subscriber's rejection function is requested in the call connection state; And deleting the telephone number of the corresponding subscriber from the rejection table when receiving a release command of a specific subscriber from the subscriber requesting the rejection reception to the reception rejection table.