KR0148530B1 - Service method for received ring of office line in keyphone system - Google Patents

Abstract

[Technical field to which the claimed invention belongs]

It is a technology that services trunk line ring by extension subscriber who used trunk line last in addition to set extension subscriber of key phone system.

[Technical Problem to Solve]

The incoming ring service is provided only to the subscribers of the CO line ring, so that all the subscribers in the CO line table are absent or in a position where they cannot receive a phone call.

[Summary of the solution of the invention]

In the key phone system, when there is a trunk line ringing, the ring service is provided to the subscribers of the ring ring table designated and the subscribers who used the last trunk line.

[Important Uses of the Invention]

Key phone system

Description

C.O. ring service in keyphone system

1 is a diagram of a conventional trunk line ring incoming table buffer structure.

2 is a block diagram of a key phone system according to the present invention.

3 is a final subscriber registration control flowchart using a trunk line according to the present invention.

4 is a control flowchart for performing a ring service as a last-used extension subscriber in accordance with the present invention.

5 is a schematic diagram of a trunk line incoming ring incoming table buffer according to the present invention.

The present invention relates to a trunk line incoming ring service method in a key phone system, and more particularly, to a method of serving a trunk line ring as an extension subscriber using a trunk line in addition to the set extension subscriber of the key phone system.

Recently, there has been a growing interest in call answering and call etiquette, and when using a key phone system, it becomes an important concern about how quickly an external call is answered. In general, calling a trunk line of a key phone system serves an extension subscriber according to a trunk line ring reception table and ring service mode designated for each trunk line as shown in the trunk line ring incoming table of each trunk line in FIG. In other words, when a CO line is received, the CO line ring is serviced to eight designated subscribers, which can be individually serviced by the subscribers from station A to station H or ring to all subscribers at the same time. have. As described above, the conventional ring service method only serves an incoming ring to the subscribers of the trunk line ring table, so that all the subscribers in the trunk line ring table are absent or unable to answer the call promptly. there was.

Accordingly, it is an object of the present invention to provide a ring service to extension subscribers who have finally used a trunk line in addition to a designated table extension subscriber in a key phone system to solve the above problems.

Another object of the present invention is to provide a method for shortening a telephone answering time by providing a ring service to an extension subscriber who finally used a trunk line in a key phone system.

In order to achieve the above object, the present invention provides a process of performing a ring service to an extension subscriber who is registered in an extension subscriber specified in a ring reception table when there is a trunk line incoming ring, and performing a ring service on the incoming trunk line after performing the ring service. It is characterized in that the process consists of registering the subscriber station in the CO line ring reception table.

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

2 is a block diagram of a key phone system according to the present invention, wherein the central processing apparatus controls the overall control operation of the key phone system and performs a ring call to a designated destination table subscriber and the last used subscriber when there is an incoming call from a trunk line. (10) and a program for ring-receiving as the last-used extension subscriber, a memory unit 20 for temporarily storing data generated during program execution, and a subscriber's voice current in a voice band. An internal subscriber circuit 30 for supplying and interfacing between subscribers, a switching circuit 40 for switching various tone signals and audio data under the control of the central processing unit 10, and the central processing unit 10. Tone supply circuit 50 for generating various tone signals under control and outputting them to the switching circuit 40 and for supplying to subscriber lines A ring generation circuit 60 for generating a ring signal, a trunk line circuit 70 for calibrating trunk lines under the control of the central processing unit 10, and interfacing the signals coming from the trunk lines; A DTMF receiver 80 for analyzing the DTMF signal output through the subscriber circuit 30 and applying the corresponding digit data to the CPU 10, and outputting the DTMF signal under the control of the CPU 10. DTMF transmitter 90 is configured.

Figure 3 is a flow chart of the subscriber registration control using the trunk line in accordance with the present invention, Figure 4 is a control flow diagram for the ring service to the last subscribers using the trunk line in accordance with the present invention, Figure 5 is the incoming call ring ring incoming according to the present invention As a table buffer structure diagram, it consists of a CO line ringing table and a buffer for registering the last extension subscriber using the CO line. Here, the last extension subscriber who uses the trunk line becomes an extension subscriber who has called an external subscriber through the trunk line or answered an incoming ring received from the trunk line.

Referring to FIGS. 2 and 5 described above, a preferred embodiment of the present invention will be described in detail.

First, the operation of registering the last subscriber in the buffer of FIG. 5 will be described with reference to FIG. 3. In step 31, the CPU 10 inputs a trunk line selection key signal from the subscriber through the subscriber subscriber circuit 30. If the CO line selection key signal is input, proceed to step 32. In step 32, the central processing unit 10 controls the switching circuit 40 to process the trunk line state during a call and to use the trunk line for the subscriber. In step 33, the central processing unit 10 finds the last user address position of the destination table of the corresponding trunk line, and then proceeds to step 34. In step 34, the central processing unit 10 shifts the current contents of the buffer shown in FIG. 5 indicated by the last user address one by one to register the extension subscriber who uses the current trunk line.

After registering the last user using the CO line, if there is an incoming ring from the CO line, ring service is provided to the subscriber specified in the CO line ring table and the registered last user, and the extension subscriber who answered the incoming ring is returned to the last user. The operation of registering will be described with reference to FIG. 4. In step 41, the CPU 10 checks whether a trunk line is received and proceeds to step 42 when the trunk line is received. In step 42, the central processing unit 10 designates the ring destination table address of the corresponding trunk line as shown in FIG. 5 and proceeds to step 43. In step 43, the central processing unit 10 services the trunk line ring to an extension subscriber designated in the ring reception table as shown in FIG. In step 44, the central processing unit 10 designates the last user address of the ring destination table as shown in FIG. In step 45, the central processing unit 10 services the incoming ring to the last user corresponding to the designated address. Then, in step 46 the central processing unit 10 checks whether the end user who serviced the incoming ring responded to the trunk line. In this case, if the answer is made, the process proceeds to step 47, whereby the contents of the buffer shown in FIG. In operation 48, the CPU 10 controls the switching circuit 40 to proceed with the trunk line call with the last user who responded.

As described above, the present invention provides ring service to station subscribers of a ring incoming / receiving table designated when there is a trunk line ring in a key phone system and an extension subscriber who uses the last trunk line, so that all designated subscribers in the trunk line ring table are absent. In response to an incoming call, there is an advantage that the response time can be shortened to reduce the response time.

Claims (4)

In the trunk line ring service method of a key phone system, when a trunk line selection key is input from an extension subscriber, a process of registering as a last user in a trunk line ring reception table and performing a ring service to the registered user when there is a trunk line ring incoming Characterized by consisting of a process. The method of claim 1, further comprising: performing a ring service to an extension subscriber designated in a ring-destination table when there is an incoming call. In a trunk line ring service method in a key phone system, when there is a trunk line ring, a ring service is performed to an extension subscriber specified in the ring ring table and a last subscriber registered in the ring ring table; And registering the subscribers in response to the CO line in the CO line ring reception table. In the trunk line ring service method of a key phone system, a process of registering as a last user in a ring ring table when a trunk line selection key is input from an extension subscriber, and when a ring line ring is received, is registered with an extension subscriber specified in the ring ring table. And performing a ring service to the last subscriber of the station, and registering a subscriber to the trunk line ring reception table in response to the incoming trunk line after performing the ring service.