KR100273631B1 - Method for rejection informming of incomming call to subscriver in priviate exchange - Google Patents

Abstract

end. TECHNICAL FIELD OF THE INVENTION

How to notify Do Not Disturb at private exchange

I. The technical problem to be solved by the invention

How do I notify callers not receiving calls?

All. Summary of Solution of the Invention

The present invention is a method for informing a caller's rejection status of an extension subscriber in a private exchange having a voice mailbox. When a call of an extension subscriber is requested, the memory is checked to determine whether the caller is in a caller rejection state. If not, the call request is connected with the subscriber who is called. If the call is rejected, the call is connected to the voice mailbox to output a pre-recorded call rejection message. At this time, when a message recording request signal is received in the voice mailbox, the message is recorded in the voice mailbox of the called extension subscriber. When the message recording end signal is received, the recording of the message is terminated.

la. Important uses of the invention

Method of notifying call forwarding status of extension subscriber in private exchange.

Description

Notification method of call rejection status of extension subscriber in private exchange

The present invention relates to a call rejection method in a private exchange, and more particularly, to a method of notifying a call rejection status of an extension subscriber.

In general, call rejection was an advanced feature used in certain phones such as keyphones and digital phones. However, with the increase of publicity using telephones in the flood of indiscriminate information, the need for call rejection has emerged in ordinary telephones. In response to these demands, private exchanges with a call rejection function have been developed and are commercially available. In such a private exchange, the extension subscriber can set the call rejection to his / her telephone number through the operator of the private exchange. At this time, when the subscriber who set the call rejection among the extension subscribers of the private exchange is called, the private exchange outputs a busy tone to notify the call rejection state. However, when the caller listens to the busy tone, the subscriber does not recognize that the extension has been set up. Therefore, the caller attempts to call again after a while, and the caller who hears the busy tone continuously after several attempts may be mistaken for the telephone receiver. That is, the caller could not know the exact status of the subscriber who was called. Therefore, the call originator continues to call the extension subscriber who has been set up. Therefore, the number of attempts by the call attempter increases, and the specific line on the private exchange side remains connected. In addition, if the call is not continuously connected, the call success rate is lowered, and the call attempter does not know the incoming rejection state properly, so there is a problem of continuously trying to make a call. In addition, the extension subscriber who set the rejection call did not know this even when the call was received during the set time.

Accordingly, an object of the present invention is to provide a method for notifying a call rejection state without using a busy tone when a caller of a station rejected state is called in a private exchange.

In order to achieve the above object, the present invention provides a method of notifying a caller rejection status of an extension subscriber in a private exchange having a voice mailbox, and when the call of the extension subscriber is requested, the memory of the extension subscriber whose call is requested is received. Checking whether the extension is in a reject state, and if the extension is not in a call rejection state, connects a call requesting the call with the extension, and if the extension is in a call rejection state, calls the voice mailbox. Connecting a message, controlling the voice mailbox, and outputting a call reject message;

Recording a message to a voice mailbox of a called extension subscriber when a message recording request signal is received from a dual tone multi-frequency (DTMF) receiving unit; and receiving a message recording end signal from the voice mailbox. Characterized in that it comprises a step of ending.

1 is a block diagram of a private exchange to which the present invention is applied;

2 is a control flowchart of the processing of a call received by an extension subscriber in a call rejection state according to a preferred embodiment of the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of a private exchange to which the present invention is applied.

The control unit 111 controls the overall operation of the private exchange. In particular, according to the present invention, when the telephone of the extension subscriber is in the call rejection state, the control unit 111 performs a control for notifying the call rejection state. The memory unit 112 stores control data necessary for the control of the controller 111 and also temporarily stores data generated during the control. In addition, it stores and manages data according to the rejection of each subscriber. The switch unit 113 performs a switching operation according to the call connection or data flow under the control of the control unit 111. The subscriber circuit 114 is connected to a plurality of extension subscribers and outputs an event generated such as a hook on / off from the subscriber to the controller 111. And when calling, it supplies power to the subscriber. The digital subscriber circuit 115 is connected to a plurality of extension subscribers, outputs events of the extension subscribers to the controller 111, and performs an interface of data transmitted and received between the digital telephone and the controller 111. The tone generator 116 generates a busy tone or a dial tone by the control of the controller 111 and outputs it to the switch 113. The DTMF generator 117 generates a DTMF signal under the control of the controller 111 and outputs the DTMF signal to the switch 113. The DTMF receiver 118 decodes the DTMF received through the switch 113 and outputs numeric data corresponding to the DTMF to the controller 111. The ring generator 119 generates a ring signal under the control of the controller 111 and outputs the ring signal to the subscriber circuit 114. The control unit 111 connects the incoming call to the voice mailbox 120 when the incoming call is examined as an extension subscriber that is not present or when the incoming call is introduced to the extension subscriber in the rejection state. The voice mailbox 120 converts voice data received through a line connected under the control of the control unit 111, and stores the voice data in a voice memory (not shown in FIG. 1) classified for each subscriber and reproduces or deletes them according to a user's request. To control. The trunk line circuit 121 is connected to the trunk line of the public network (PSTN), and forms a loop or blocks the public network according to the call or call. In addition, the trunk line circuit 121 outputs the received call information to the controller 111 when a call is received.

2 is a control flowchart of a call received by an extension subscriber in a call rejection state according to a preferred embodiment of the present invention.

Hereinafter, a process of a call received by an extension subscriber in a call rejection state will be described in detail with reference to FIGS. 1 to 2. The control unit 111 maintains the standby state in step 200. When a signal according to an event occurrence is received from the outside, the control unit 111 proceeds to step 202 to check whether the generated event is an event of an extension subscriber call. The control unit 111 performs the corresponding function in step 230 when the event is not an extension subscriber call, and proceeds to step 204 when the event is an extension subscriber call. In step 204, the control unit 111 reads data of an extension subscriber requesting a call from the memory unit 112 and checks whether the extension subscriber is in an incoming call rejection state. The control unit 111 proceeds to step 206 in the case of the extension subscriber in the call rejection state, and proceeds to step 232 in the case of the extension subscriber in the call rejection state to perform the general call connection mode. In general call connection mode, when an extension subscriber is not in the incoming call rejection state, it performs a switching operation to connect a call, and connects the call to form a loop for a call.

In step 206, the controller 111 controls the switch 113 to connect the line requesting the call to the voice mailbox 120. The controller 111 proceeds to step 208 and requests the voice mailbox 120 to output a call reject message according to the extension subscriber rejection status. Accordingly, the voice mailbox 120 outputs a call rejection message. For example, the message displayed at this point is explained: “I cannot answer a call at this time. Press 1 to record a voice message, or press 2 to call another subscriber. ” The message may be configured in various ways in the manufacture of the private exchange in addition to the above-described contents. Other messages exemplified below can be changed to various messages in the production of a private exchange or voice mailbox.

The controller 111 outputs the call rejection message and proceeds to step 210 to check whether the call is terminated. In this case, the end of the call refers to a state in which the person who attempts to call the extension is hooked on, and it is determined whether the busy tone is detected through the loop formed with the call attempter through the DTMF receiver 118. When the call is terminated, the control unit 111 proceeds to step 234 to block the loop formed in the switch unit 113, the voice mailbox 120 and the trunk line circuit 121. When the controller 111 proceeds from step 210 to step 212, the controller 111 checks whether a DTMF tone is received through the formed loop. The control unit 111 proceeds to step 214 when the DTMF tone is detected as a result of the test and proceeds to step 210 when the DTMF tone is not detected.

In step 214, the controller 111 checks whether the received DTMF tone is a selectable number. The controller 111 proceeds to step 216 when the check result is a selectable number, and proceeds to step 236 when the check result is a non-selectable number. The number which can be selected here means the number with which the function was set to the said private exchange. In the following description, the set function is assumed to be two kinds of recording of a voice message and calling of another extension subscriber. In addition, when the controller 111 proceeds from step 214 to step 236, the controller 111 outputs an error input message and proceeds to step 210. Here, the error input message is a message indicating that the function is not set. For example, you can set it as "You have pressed wrong".

In step 216, the controller 111 checks whether the input DTMF tone requires a function of a first setting. The control unit 111 proceeds to step 218 in the case of the first setting and the step 238 in the case of the second setting. Here, the first setting refers to voice recording in the above-described exemplary sentence, and the second setting refers to a call with another subscriber. When the controller 111 proceeds from step 216 to step 218, the controller 111 controls the voice mailbox 120 to output a first guide message. For example, say the first guide message such as, "If you hear a beep, speak." The controller 111 outputs a guide message in step 218 and controls the DTMF generator 117 to output a sound according to the beep. In step 220, the voice mailbox 120 records the received voice in the extension subscriber's mailbox in which the voice is rejected. In addition, the control unit 111 checks whether the DTMF tone is detected from the DTMF receiving unit 118 according to the end of the recording while the voice is being recorded, and at the same time, the call of the subscriber who attempted the call is terminated. The control unit 111 recognizes that the recording is terminated when any one of the case of the place, the control the voice mailbox 120 to terminate the recording, and cuts the formed loop.

In contrast, if the process proceeds from step 216 to step 238, the controller 111 controls the voice mailbox 120 to output a second guide message to the caller. For example, the second guide message may be composed of a message such as “Please press the extension number you want”. The controller 111 outputs the second guide message, cuts off the voicemail box 120 and the line, and proceeds to step 240 to receive the extension number through the DTMF receiver 118. The control unit 111 proceeds to step 204 when receiving data according to the extension number from the 118. Depending on the status of the other subscribers, the process is performed according to the general call connection mode or call rejection.

As described above, when a call is received by an extension subscriber who is not in a call, the caller can be recorded in a voice mail box to know who attempted the call, and the call attempter can listen to the busy tone and prevent the user from retrying the call several times. There is an advantage to this. In addition, since the call attempter may dial again and perform a call with another extension subscriber without retrying the call, there is an advantage of not having to dial the private exchange again after the call ends.

Claims (5)

Claims [1] A method of notifying a caller's rejection status of an extension subscriber in a private exchange having a voice mailbox, If the subscriber's call is requested, checking whether the subscriber's state stored in the memory is an incoming call rejection state; If the state of the extension subscriber is not a call rejection state, proceeding to a call connection mode; and if the state of the extension subscriber is a call rejection state, connecting a call to the voice mailbox; And controlling the voice mailbox to output a call rejection message. 6. The method of claim 1, Recording a message in a voice mailbox of a called extension subscriber when a message recording request signal is received in a voice mailbox by a DFM receiver; And terminating the recording upon receiving the message recording end signal in the voice mailbox. The method of claim 2, And outputting an error input message when a key input signal that is not set to the DFM receiver is received after outputting the rejection message. The method according to claim 1 or 2 or 3, Receiving a number of another extension subscriber when receiving a signal for requesting connection with another extension subscriber to the DFM receiver after outputting the rejection message; Call forwarding status notification method of the extension subscriber in the introduction exchange, characterized in that it further comprises the step of proceeding to check the status of the other extension subscriber. Claims [1] A method of notifying a caller's rejection status of an extension subscriber in a private exchange having a voice mailbox, If the extension subscriber's call is requested, checking whether the extension subscriber's state stored in the memory is in the state of not being called; Performing a general call connection mode when the state of the extension subscriber requesting the call is not a call rejection state, and when the call extension is in the call rejection state, connecting a received call to the voicemail box; Controlling the voice mailbox to output an unsubscribe message; Outputting the call rejection message and checking whether a call termination signal is received by a DFM receiver; Disconnecting all lines connected to the call requesting the call when the call termination signal is received from the line, and checking whether a DMP tone is detected when the call is not terminated; Checking whether a selectable number is received when a DMT tone is received; Outputting an error input message and requesting reception of the DMP if the received DFM tone is an unselectable number; If the received DMP tone is a selectable number, checking whether to store a voice message or request a call with another extension subscriber; Storing the message in the extension subscriber voice mailbox of the incoming call rejection state when the request for storing the voice message is received from the received DMT tone; Outputting a message requesting an input of an extension subscriber number and receiving an extension subscriber number when a call request is made with another extension subscriber as a result of the check of the received DMT tone; Receiving a call rejection status of an extension subscriber in a private switch, characterized in that the step of checking the status of the extension subscriber when the extension subscriber number is received.