KR0138180B1 - Answering machine - Google Patents

Abstract

[Technical field to which the invention described in the claims belong]

A call service method in an exchange system.

[Technical Challenges to Invent]

When the missed guide bit is set, if the subscriber returns from home and forgets without canceling the missed guide bit set state, the ringer will not ring even if there is an incoming call. You may not be able to. At this time, even if the calling subscriber anticipates such a situation, the called subscriber wants to release the set of missed guide bits as soon as possible, so that the outgoing subscriber can send the ring to the called subscriber by the calling subscriber in the absence guide service state. to be.

[Summary of the solution of the invention]

The missed guidance service method is a call service method of an exchange system, comprising a memory means for registering whether or not a missed guidance service is corresponding to each telephone number and a timer means for checking the passage of a predetermined time. And a process of checking whether the missed announcement service is registered when the incoming call is recognized, sending a missed announcement voice message to the calling subscriber when it is confirmed that the absence guidance service is registered, and after sending the missed announcement voice message, Checking whether the predetermined time has elapsed from the timer means, and if it is confirmed that the predetermined time has elapsed, transmitting a ring to the called party.

[Important Uses of the Invention]

It is used to make ring transmission to the called subscriber by the calling subscriber in the absence guide service state.

Description

Out of Office Information Service

1 is a block diagram of an exchange system to which the present invention is applied

2A and 2B are schematic diagrams of a telephone number change guide memory table according to the present invention;

Figure 3 is a flow chart illustrating a missed guidance service process according to the present invention.

* Explanation of symbols for main parts of the drawings

ST1, ST2: subscriber's phone 5: MMC

10: subscriber module 11: module control unit

12: subscriber matching unit 13: subscriber control unit

14 ring generating unit 15 collecting portion

16: voice guidance unit 17: tone generating unit

18: DTMF receiver 19: signal controller

20: switch module 30: trunk module

The present invention relates to a call service method in an exchange system, and more particularly, to a missed guide service method that enables a ringer to send an incoming call to a called subscriber in an absence service state.

In general, the missed announcement service means that when a subscriber goes out and sets the missed announcement bit by setting a corresponding function ID, the subscriber automatically sends a message indicating that he / she is not recorded. Say. I'm out now, so please call me back. It is a service that allows the sender to know that the other party is absent by sending another appropriate message to the calling party.

However, if the missed guide bit is set in this way, the following situation may occur because the ring does not ring to the called party. That is, even if the subscriber forgets to return without leaving the set status of the missed guide bit even after returning out, even if there is an incoming call, the ring tone will not ring, and thus, the important call may not be received. In this case, even though the called party is not actually absent, the message is sent to the calling party to inform the absence of the called party, which may cause the called party to inadvertently exempt or to bother. And even if the calling subscriber predicted such a situation, the subscriber wanted to release the missed guide bit quickly.

Accordingly, an object of the present invention is to provide a missed guidance service method for enabling ring transmission to a called subscriber by an originating subscriber in an absence guidance service state.

The sub-information guidance service method for achieving the above object is a call service of an exchange system having a memory means for registering the absence guidance service corresponding to each telephone number and a timer means for checking the passage of a predetermined time. In the method, the process of recognizing the incoming call, the process of investigating the absence guidance service if the incoming call is recognized, and if it is confirmed that the absence guidance service is registered, sending a missed announcement voice message to the calling subscriber side; After sending the missed announcement voice message, it is characterized in that it comprises the step of checking whether the predetermined time has elapsed from the timer means, and if it is confirmed that the predetermined time has elapsed, the ring is sent to the called party.

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

First, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals have the same reference numerals as much as possible even if displayed on different drawings. In addition, in the following description, many specific details such as components, port numbers, telephone numbers, etc. of specific circuits are shown, which are provided to help a more general understanding of the present invention, and the present invention may be practiced without these specific details. It will be apparent to those skilled in the art. 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.

1 is a block diagram of an exchange system to which the present invention is applied. Typically, the local exchange performs a distributed control function for each module, and the subscriber module 10 performs a function of interfacing signals and voices between the local exchange and the subscribers. The trunk module 30 performs an interfacing function with other exchanges through the trunk. The switch module 20 performs a switching function between the subscriber module 10 and the trunk module 30 and a switching function between the subscriber module 10. As described above, each module 10, 20, 30 controls the overall operation of its own module, and performs processor communication between the controllers to notify other modules of the event occurrence. Referring to the operation of the subscriber module 10, the subscriber matching unit 12 is an analog subscriber line matching circuit, BORSCHT (Battery Feed, Overvoltage Protection, Ringing, Supervision, Coding / Decoding) into the subscriber (ST1-STn) , Hybrid, Testing) function. To this end, the subscriber matching unit 12 includes general-purpose integrated circuits such as a subscriber line interfacing circuit (SLIC), a filter, a codec, and high-lead integrated circuits. A ring generator 14 is a circuit for supplying a ring current of 20HZ to the subscriber matching unit 12. The concentrator 15 has a time switch function and is directly controlled by the module controller 11. In addition, the collecting unit 15 is connected to the subscriber channels of the subscriber matching unit 12, the remaining terminals are the tone generating unit 17, voice guide unit 16, DTMF receiving unit 18 and the switch module 20 Channels are connected. The concentrator 15 performs the exchange connection function necessary for each of the channels according to the call processing process under the control of the module controller 11. At this time, since all the subscribers ST1-STn do not make a call at the same time, the traffic connection is made to efficiently use the capacity of the trunk module 30. The aggregation rate is adjusted in units of 1 frame, The aggregation ratio can be 2: 1, 4: 1, 8: 1, 16: 1, etc. depending on the traffic capacity. The tone generator 17 outputs the corresponding tones to the subscriber matching unit 12 through the concentrator 15 when the tone processing is performed in various call processing processes, and simultaneously acquires multiple subscribers from each tone channel. It is possible to connect with. The DTMF receiver 18 converts the DTMF signals received through the concentrator 15 into digital data and outputs them to the signal controller 19. The voice guide unit 16 has various voice messages related to the subscriber side including the missed guide message and outputs the generated voice message to the concentrator 15. The signal controller 19 and the subscriber controller 13 control the operations of the DTMF receiver 18 and the subscriber matcher 12, respectively, and control the corresponding functions upon event reception. The MMC unit 5 checks or changes the module control database. That is, the information desired to be searched is sent to the module control unit 11, and the corresponding information is sent to the MMC unit 5 again, which is displayed on the screen. In addition, when the database needs to be modified, the MMC unit sends desired information to the module control unit 11 so that the database can be modified. The module controller 11 controls the overall operation of the subscriber module 10 and is responsible for the overall exchange function for performing processor communication with the module controllers of the trunk module 30 and the switch module 20.

2A and 2B are diagrams of a telephone number change guide memory table according to the present invention. FIG. 2A is a subscriber table and FIG. 2B is an incoming call information table. Trunk '0' in the incoming call information table is a general subscriber (local subscriber) port number, and '1' is a trunk subscriber (other exchange subscriber) port number.

3 is a flowchart illustrating a missed guidance service process according to the present invention.

The present invention will be described in detail based on the above configuration.

In step 300 of FIG. 3, an incoming call is an incoming call from an extension subscriber or an incoming call from another exchange. At this time, the incoming call from the subscriber is as follows. First, it is assumed that extension subscriber ST1 has hooked off. The subscriber control unit 13 then notifies the module control unit 11 of the hook-off state of the ST1 subscriber, and thus the module control unit 11 recognizes the hook-off state of the ST1 subscriber and controls the concentrator 15 to control the subscriber. The ST1 subscriber port of the matching section 12 is connected to the DTMF receiving section 18 side. At this time, when the ST1 subscriber performs the dialing function for the called party, the dial data is transmitted to the module control unit through the subscriber matching unit 12 → the collecting unit 15 → the DTMF receiving unit 18 → the signal control unit 19. Is applied. The module control unit 11 then recognizes the incoming call if the received dial data is the called subscriber's telephone number, which is the subscriber of the exchange.

An incoming call generated from another switch is applied in the form of an incoming message to the module controller 11 via the trunk module 30-> switch module 20-> converging unit 15. At this time, if the called party's telephone number of the incoming message is a subscriber of the exchange, it is recognized as an incoming call. In operation 305, the subscriber table may determine whether the incoming subscriber registers the absence guide service. The set of missed guide bits is made, for example, by performing the following operation. First, when the subscriber hooks off and inputs a digit corresponding to the missed guidance function through the mmc unit 5, the input digit is the subscriber matching unit 12 → the collecting unit 15 → the DTMF receiving unit 18. → is applied to all of the control unit 11 through the signal control unit (19). Accordingly, the module controller 11 recognizes that the corresponding digit data corresponds to the missed-information service function, and sets the missed guide bit.

Therefore, in step 305, the absence guide bit can be referred to to determine whether the absence guidance service is registered, that is, whether the subscriber wants the absence guidance service. In step 310, the module control unit 11 controls the concentrator 15 to connect the telephone number change guide message of the voice guide unit 16 to the calling subscriber. Connecting to the originating subscriber is performed by the module control unit 11 controls the switch module 20 through the concentrator 15. At this time, for example, the voice prompt message is now absent. Sorry but please call me again. In step 315, the module controller 11 may record the predetermined timer value in the timer value storage area of FIG. 2A. Then, when the timer informs the passage of time by an interrupt or the like, the module controller 11 decreases the stored timer value. In this way, when the timer value becomes 0, the timer will be recognized in step 320. Recognizing the end of the timer, the module control unit 11 controls the switch module 20 so that the absence guide voice message is no longer sent. In operation 335, the subscriber controller 13 and the ring generator 14 are controlled to ring the incoming subscriber. In addition, the collecting unit 15 and the switch module 20 are controlled so that the ring back tone of the tone generating unit 17 can be sent to the calling party. In step 340, the normal call routine is performed.

Meanwhile, as described above in step 315, the calling subscriber may request to input the digit without using the timer. In other words, when the originating subscriber rejects the voice guidance service, if the user inputs a random digit, the module controller 11 recognizes this fact through the DTMF receiver 18. Of course, you may use this method and the method of using an electronic timer simultaneously.

As described above, the present invention enables the calling subscriber who hears the missed announcement message to send a beep to the other party, thereby reminding the subscriber that he has forgotten and does not release the missed guidance bit. It has the advantage of being able to answer without missing and making necessary calls in time.

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 (6)

In a missed guidance service method in a switching system having memory means for registering an absence guidance service corresponding to each telephone number, a process of recognizing an incoming call, a process of investigating an absence guidance service if an incoming call is recognized, and Sending a missed announcement voice message to the calling subscriber, if it is confirmed that the announcement service is registered, and checking whether a response signal of a specific state is input from the calling subscriber in response to the sending of the missed announcement voice message; And transmitting a ring to the called subscriber if the response signal of the specific state is input. 2. The method of claim 1, further comprising transmitting a ringback tone to a calling party when sending a ring to the called party. The method of claim 1, further comprising: stopping transmission of the missed announcement voice message when a response signal of a specific state is input from the calling party. A missed notice service method in an exchange system comprising a memory means for registering whether a missed notice service corresponds to each telephone number and a timer means for checking the passage of a predetermined time, the process of recognizing an incoming call, and If it is recognized, the process of investigating the absence guidance service, and if it is confirmed that the absence guidance service is registered, sending a missed announcement voice message to the calling party, and after sending the absence guidance voice message, a predetermined time from the timer means Checking whether the elapsed time has elapsed, and if it is determined that a predetermined time has elapsed, transmitting a ring to the called subscriber. 5. The method of claim 4, further comprising transmitting a ringback tone to a calling party when sending a ring to the called party. 6. The method of any one of claims 4 and 5, further comprising the step of stopping transmission of the missed announcement voice message when it is confirmed that a predetermined time has elapsed.