KR100233462B1 - Paging method for status of called party registering dnd service in branch exchange system - Google Patents

Abstract

The present invention discloses a method of guiding and broadcasting a status of a called party registered in a call rejection function in an exchange system. The present invention is connected to a voice mail server, and at the exchange system serving at least a call rejection function, when a call request is made to a subscriber who has registered a call rejection function, the subscriber currently registers a call rejection function using the voice mail server. The present invention proposes a method of guiding the facts by voice to the caller of the subscriber. According to the present invention, the caller can know the current state of the called party, and also eliminates the inconvenience of having to repeatedly try the call.

Description

Announcement method of call rejection status of exchange system

The present invention relates to a method of guiding a state of a subscriber in an exchange system, and more particularly, to a method of guiding and broadcasting a state of a called party set in a rejection function.

In general, a switching system such as a private automatic branch exchange (PABX) or a key phone system serves various functions convenient to subscribers. These features include Speed Dial, Last Number Redial, Transfer, and Do Not Disturb. In this way, since the exchange system services various functions, subscribers can obtain many conveniences during a call or during a call when they register for a desired service.

Meanwhile, among the above functions, the rejection function (hereinafter referred to as "DND") is registered by the subscriber by inputting a specific rejection registration code that is set in advance. Even if there is a call request, the call is not processed. In other words, the call rejection function is a function that rejects an incoming call and enables only an outgoing call. At this time, the person who called the subscriber who registered the call rejection function hears an error tone or busy tone from the switching system when the incoming call is requested. In this way, the call rejection function is a function that a user who does not want to be disturbed by a telephone generally gains convenience by registering.

However, even when calling a subscriber registered to the do not disturb function as an urgent or necessary work, the caller only hears an error tone or busy tone, so there is a disadvantage in that the callee is not aware of the state of the callee. In this case, the caller will repeatedly attempt to call the callee who registered with the do not disturb function. As a result, the caller may feel inconvenient to repeat the call attempt for the callee who cannot call.

Accordingly, an object of the present invention is to provide a method for knowing the current state of a subscriber even when calling a subscriber registered for a call rejection function in an exchange system.

Another object of the present invention is to provide a method for eliminating the inconvenience that a caller has to repeatedly attempt a call for a subscriber who has registered for a call rejection function in an exchange system.

The present invention for achieving the above objects is connected to a voice mail server, and at the exchange system serving at least a call rejection function, when a call request is made to the subscriber side registered in the call rejection function, the subscriber currently rejects the call using the voice mail server. The present invention proposes a method of announcement by voice to the subscriber's caller that the function has been registered.

The present invention has the effect of eliminating the inconvenience that the caller can know the current state of the called party, and must repeatedly attempt to call.

1 is a view showing a connection configuration of an exchange system to which the present invention is applied.

2 shows a general configuration of the exchanger shown in FIG.

3 is a flowchart illustrating a process of guiding and broadcasting a subscriber's state while performing a call rejection function according to the present invention;

DETAILED DESCRIPTION A detailed description of preferred embodiments of the present invention will now be described with reference to the accompanying drawings. In the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. In addition, the terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to the intention or custom of the user or chip designer, and the definitions should be made based on the contents throughout the present specification.

1 is a view showing a general connection configuration of the exchange system to which the present invention is applied. In FIG. 1, switch 10 is connected to a public switched telephone network (PSTN) and also accepts a number of telephones (TEL A, TEL B, TEL C) as subscribers. In addition, the switch 10 may be connected to a voice mail server (VMS) 20 that stores various voices for guiding the subscriber. Accordingly, the switch 10 guides various types of voices to subscribers in a call or subscribers in a call attempt. In this case, the exchange 10 and the VMS 20 are connected to each other through a predetermined number of channels, and the VMS 20 may be embedded in the exchange 10. In the case of the present invention, VMS 20 voice announcement that the called party is currently registered in the DND function.

2 is a view showing the configuration of the exchanger shown in FIG. 1 performing an operation according to the invention. In the case of the present invention, the exchange services the DND function to at least subscribers and is connected to VMS 20 to receive the announcement through a valid announcement channel and provide the subscriber to the corresponding subscriber. In particular, when the caller calls the callee registered in the DND function, the switch receives the fact that the caller is registered in the DND function from the VMS 20 and announces the announcement.

FIG. 2 is a diagram showing the configuration of the exchanger 10 shown in FIG. 1.

In FIG. 2, the controller 100 controls the overall operation of the system such as controlling call switching and providing various services to the subscriber. Read only memory (ROM) 102 and random access memory (RAM) 103 store programs and initial service data of the controller 100 for performing basic calls and various functions, and are processed by the controller 100. Temporarily save the data. That is, the ROM 102 stores program and service data, and the ROM 103 temporarily stores data generated during program execution. The timer 104 generates time data and outputs the time data to the controller 100. The switching circuit 106 switches various tones and voice data under the control of the controller 100.

The general subscriber circuit 108 supplies a call current to the general telephones A, B, C, D under the control of the control unit 100, and interfaces the signals between the general telephones A, B, C, D and the switching circuit 106. The ring generator 110 generates a ring signal and supplies the ring signal to the subscriber line. The key phone subscriber circuit 112 transmits and receives various data to and from the key phone telephones E, F, G, and H under the control of the control unit 100, and supplies a call current, between the key phone telephones E, F, G, H and the switching circuit 106. Interface the signal. Here, the key phone telephones (E, F, G, H) and the general telephones (A, B, C, D) become extension subscribers. The line connecting the general subscriber circuit 108 and the key subscriber subscriber circuit 112 to the extension subscriber becomes a subscriber line.

The tone generator 114 generates various tone signals under the control of the controller 100 and outputs them to the switching circuit 106. The trunk line circuit 116 forms a trunk line call loop under a control of the central office line under the control of the controller 100, and interfaces signals between the trunk line and the switching circuit 106. Here, the CO line means the line connecting the CO line 116 and the Central Office (C.O.).

The dual tone multi frequency (DTMF) receiver 118 analyzes the DTMF signal input from the switching circuit 106, converts the DTMF signal into digital data, and outputs the digital data to the controller 100. Here, the DTMF signal received by the DTMF receiver 118 through the switching circuit 106 may be a telephone number generated by an external subscriber through a trunk line or a telephone number generated by an extension subscriber. The DTMF transmitter (generator) 120 converts the digital data output from the control unit 100 into a DTMF signal and outputs it to the switching circuit 106.

The components as described in FIG. 2 are components that can be found in a general exchange system. However, the ROM 102 stores a program according to the processing flow as shown in FIG. 3. That is, the control unit 100 reads the program stored in the ROM 102 and performs the processing according to the call request from the VMS 20 indicating that the called party is registered in the DND function when the called party has registered the DND function. The announcement is sent to the caller.

Now, the subscriber TEL A hooks up the telephone to call the subscriber TEL B registered in the DND function and then dials the telephone number of the subscriber TEL B. Assume that you have pressed to dial. Then, the control unit 100 of FIG. 2 confirms these facts in steps 301 and 302, respectively, and then, in step 303, the call forwarding request signal REQ_SZR_STN to the called party TEL B corresponding to the telephone number pressed by the subscriber TEL A. In step 304, it is checked whether the called party TEL B is registered in the DND function. That is, it is checked whether the called party's telephone (TEL B) is in a call rejection state. In this case, when the called party TEL B is registered in the DND function, the control unit 100 transmits a notification signal REQ_SZR_STN_RESP indicating the fact to the caller TEL A in step 305 and notifies the caller TEL A in step 306. Search for announcement channels for connection. In this case, when the announcement channel is searched, the control unit 100 makes a DND announcement broadcast request (REQ_VMS) indicating the status of the called party registered in the DND function in the VMSS 20 in step 307. In response to the delivery of the DND announcement request REQ_VMS, the VMS 20 checks whether the found announcement channel is valid in step 308. If it is determined that the found announcement channel is valid, the VMS 20 notifies the controller 100 of the response signal REQ_VMS_RESP indicating that the DND announcement broadcast is possible in step 309. After performing step 309, the VMS 20 transmits a voice guidance message to the controller 100 indicating that the called party TEL B is registered in the DND function through the confirmed announcement channel. The voice announcement message to the caller (TEL A). That is, in step 310, the control unit 100 receives a voice guidance message indicating that the called party TEL B is registered in the DND function from the VMS 20 and performs the announcement service to the caller TEL A. As such, since the caller TEL A receives the DND announcement service, the caller TEL B can know that the caller TEL B is currently registered in the DND function.

On the other hand, when the caller (TEL A) receiving the DND announcement service hooks up the phone, the control unit 100 checks this in step 311 and then responds to the VMS 20 to request the stop of the DND announcement broadcast (STOP_VMS). To pass. The VMS 20 stops the operation of the DND announcement which informs the caller TEL A that the callee TEL B is currently registered in the DND function.

As described above, the present invention has the advantage that it is possible to check whether the callee wanting the caller to call is registered in the DND function from the voice announcement broadcast transmitted from the VMS. Accordingly, there is an advantage that the caller does not have to repeatedly attempt to call the callee registered in the DND function.

Meanwhile, in the detailed description of the present invention, specific embodiments have been described, but various modifications may be made without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined not only by the scope of the following claims, but also by the equivalents of the claims.

Claims (3)

A voice guidance method of an exchange system connected to a voice mail server and serving at least a call rejection function, And when there is a call request to the subscriber side registered in the call rejection function, a voice mail server is used to inform the caller of the subscriber that the subscriber has registered the call rejection function. A voice guidance method of an exchange system connected to a voice mail server and serving at least a call rejection function, (A) checking whether a predetermined caller hooks off and then dials to call the called party; (B) requesting a call to the called party with the telephone number dialed in step (a); (C) checking whether the called party is registered in the call rejection function; (D) informing the caller that the called party is registered in the rejection function when the called party is registered in the rejection function; (E) a process of searching for whether there is a guide broadcasting channel provided by the voice mail server after performing step (d) and requesting the voice mail server for guide broadcasting through the existing guide broadcasting channel; If the searched announcement channel is valid, the voice mail server comprises the step (f) of guiding to the caller the voice announcement that the called party is registered in the call rejection function through the announcement broadcast channel. How to. The method of claim 2, further comprising: requesting the voice mail server to stop the announcement when the caller hooks up while the fact that the called party is registered in the call rejection function is performed. How to.

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