KR0149585B1 - Automatic pick-up method of keyphone system - Google Patents

Abstract

1. Technical field to which the invention described in the claims belongs

Kitelephone System

2. Technical problem that the invention tries to solve

Implementation of automatic pickup function of the Kitelephone system

3. Summary of solution of invention

The method of picking up a key telephon having a reception table in which a plurality of extension subscribers are designated as a group includes: supplying a ring to a destination subscriber when a call is generated, and when the called extension is on hook, The process of checking the state of the extension subscribers of the destination table belonging to the group, and the process of forming a call path with the corresponding extension subscribers when the subscribers off the hook belonging to the destination table during the inspection process.

4. Important uses of the invention

In case the extension subscriber subscribed to the same reception table is off-hook, the pick-up function is automatically performed.

Description

How to Pick Up a Kitelephone System Automatically

1 is a diagram showing the configuration of a kite phone system.

2 is a diagram illustrating a connection state of subscriber circuits and extension subscribers in the key telephone system of FIG. 1 to explain the performance of the automatic pickup function according to the present invention.

3A to 3C are diagrams showing the configuration of a table designating an extension subscriber for implementing the automatic pickup function according to the present invention.

4 is a flow chart illustrating a process of automatic pickup in a kite phone system according to the present invention.

The present invention relates to a call service method of a key telephone system, and more particularly, to a method of automatically picking up a call of an adjacent extension subscriber.

1 is a diagram showing the configuration of a key telephone system, the central processing unit 111 controls the call switching and the overall operation of the key telephone system to provide various services to the user. The memory unit 112 stores programs and initial service data of the central processing unit 111 for performing basic calls and various functions, and temporarily stores data processed by the central processing unit 111. The memory unit 112 includes a ROM that stores program and service data, and a RAM that temporarily stores data generated during program execution. The clock circuit 113 generates a current time data as a clock chip IC and outputs the current time data to the CPU 111. The switching circuit 114 switches various tones and voice data under the control of the CPU 111. The general subscriber circuit 115 supplies a call current to a general telephone (not shown) under the control of the central processing unit 111 and simultaneously interfaces a signal between the general telephone and the switching circuit 114. The ring generator 116 generates a ring signal and supplies it to the subscriber line of the general subscriber circuit 115. The key phone subscriber circuit 117 transmits and receives various data with the key phone telephone (not shown) under the control of the central processing unit 111, supplies a call current, and interfaces a signal between the key phone telephone and the switching circuit 114. Here, the key phone and the general phone become extension subscribers. In addition, the line connecting the subscriber circuits 115 and 117 to the extension subscriber becomes a subscriber line. The tone generator 118 generates various tone signals under the control of the CPU 111 and outputs them to the switching circuit 114. The trunk line circuit 119 forms a trunk line call loop by seizing the trunk line under the control of the CPU 111, and interfaces a signal between the trunk line and the switching circuit 114. Here, the trunk line refers to a line connecting the trunk line circuit 119 and the national exchange period. A DTMF receiver 120 analyzes a DTMF signal input from the switching circuit 114, converts the DTMF signal into digital data, and outputs the digital data to the central processing unit 111. Here, the DTMF signal input to the DTMF receiver 120 through the switching circuit 114 is a telephone number generated by the trunk line subscriber or a telephone number generated by the extension subscriber. The DTMF transmitter 121 converts the digital data output from the CPU 111 into a DTMF signal and outputs the DTMF signal to the switching circuit 114. Here, the DTMF signal outputting the DTMF transmitter 121 becomes the telephone number of the trunk line subscriber generated when the station side calls the trunk line side.

In a key telephone system having the above configuration, when a CO subscriber designates a specific extension subscriber, the former is called a calling party and the latter is called a called party. When the phone number of the called party is confirmed in the key telephony system, the central processing unit 111 supplies a ring signal to the corresponding called party. This is called a trunk line ring. In addition, a key telephony system connected to many extension subscribers may register a plurality of extension subscribers as one extension group to serve functions in units of extension groups. At this time, when an arbitrary extension subscriber calls another extension subscriber or calls an extension group consisting of multiple extension subscribers, the ring serviced is called an extension ring. In addition, the current key telephone system is installed indoors such as homes and connected to door phones. When the door phone is connected to the key telephony system, when a call is made in the door, the ring is serviced by an extension subscriber, which is called a door ring.

As described above, there are various types of rings that can be serviced by the subscribers, and when the subscriber who is serving the ring is off-hook, a call path is formed with the incoming trunk line, extension or door phone. At this time, when the corresponding subscriber is absent or unresponsive while the ring is being serviced, another extension subscriber may respond. This is called a pickup.

In the conventional key telephony system, when the pickup function is to be performed as described above, another neighboring extension subscriber must first off-hook and dial the pickup function code or dial the pickup function code and the number of the extension subscriber whose ring is serviced. Therefore, in the conventional key telephony system, even a station subscriber who is close to the station where the ring is serviced can press the multiple keys to perform the pickup function. There was discomfort.

Accordingly, an object of the present invention is to provide a method capable of automatically performing a pickup function in a key telephone system.

Another object of the present invention is to provide a group call table in a key telephony system, and when a ring is serviced to a specific subscriber, another extension subscriber belonging to the same group as the corresponding subscriber can off-hook to perform a pickup function. In providing.

In order to achieve the object of the present invention, a pick-up service method for a key telephon having a reception table in which a plurality of extension subscribers are designated as a group is provided. Checking the status of the extension subscribers of the reception table belonging to the group of the called extension subscribers when in the hook state, and forming a call path with the corresponding extension subscribers when the subscriber is off hooked to the destination table during the inspection. It is characterized by.

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.

As used herein, the term incoming extension subscriber refers to an extension subscriber who is called from a trunk line, extension or door phone. The term "incoming table" refers to a table in which multiple extension subscribers are registered as one destination group in the telephone system and store telephone numbers of extension subscribers belonging to the registered group.

The incoming table includes a trunk line incoming table, an internal destination table, a door incoming table, and the like.

2 is a view for explaining the automatic pickup operation according to the present invention, it is a view illustrating an example of a state in which the subscriber station STA-STH is connected to the subscriber circuit. In the configuration of FIG. 2, the subscriber circuit may be the general subscriber circuit 115 and the key phone subscriber circuit 117 of FIG. Extension subscribers can also be subscribers or key-phone subscribers. The remaining configuration of the key telephone system is the same as that of FIG. 1, and the same reference numerals are used.

3A-3C are diagrams illustrating an incoming table according to the present invention. First, the trunk line receiving table as 3aa is provided with a number corresponding to the number of trunk lines connected to the key telephone system. That is, when K trunk lines are connected, the memory 112 of the key telephone system should include K trunk lines. FIG. 3a illustrates an example in which extension subscribers STA-STH such as FIG. 2 designate a destination group of an arbitrary trunk line. Therefore, when the incoming call is made to the corresponding trunk line, the CPU 111 checks the status of the subscribers registered in the trunk line receiving table as shown in FIG. 3A to service the trunk line incoming ring to the subscriber who is not in use.

Figure 3b illustrates a case where multiple subscribers are registered as one extension group. The key telephony system is used in a company or the like having many departments for performing other tasks or where the subscribers are separated from each other (when remotely spaced or have different floors). In this case, the subscribers are assigned to the group according to the department or location. Therefore, a group is registered according to this feature to register the extension reception table. 3b illustrates an example in which the subscribers STA-STD and STI-STLs are designated as a group and registered in the extension table.

FIG. 3C illustrates an example of a door reception table for servicing a door ring when a call signal is generated from the door phone when the door phone is connected to the key telephone system. That is, when the call signal is generated in the door phone, subscribers STA-STD and STO-STS may receive a call ring.

4 is a flowchart illustrating a procedure of performing an automatic pickup function in a key telephone system according to the present invention. 4 is a diagram illustrating a process of performing an automatic pickup function in a state in which a trunk line ring is serviced by an extension subscriber STA registered in the trunk line reception table as shown in FIG. 3a, but the ring line ring and the door ring are serviced. All of them can be done in the same way.

Referring to the configuration of FIG. 4, when a call is generated, the receiving extension subscriber is in the off-hook state in the process of supplying a ring signal to the called extension subscriber, checking the state of the called extension subscriber, and checking the called extension subscriber. The process of forming a call path with the incoming subscriber and making a call service, and sequentially checking the state of the extension subscribers registered in the incoming table when the incoming extension subscriber is on hook, and all of the extension subscribers of the incoming table In the on-hook state, returning to the incoming subscriber's status checking process, and sequentially checking the status of extension subscribers registered in the incoming call table. To stop the call and connect the call path with the subscriber of the off-hook It consists of.

In the present invention, for convenience of description, a description will be given on the assumption that a process of automatically performing a pick-up function when a call is received. When the incoming ring is received from the trunk line, the central processing unit 111 detects the trunk line incoming through the trunk line circuit 119 and examines the trunk line incoming table as shown in FIG. 3a to search for an extension subscriber who will service the trunk line incoming ring. At this time, the search process checks the last subscriber subscriber STH in the order of the last subscriber subscriber STH registered from the subscriber station STA registered in the trunk line receiving table as shown in FIG. 3a to service the subscriber receiver ring to the subscriber subscriber who is not in use. Therefore, when the subscriber station STA is not in use, the central processing unit 111 detects it and controls the switching circuit 114 to control the subscriber circuit to which the subscriber station STA is connected to supply the trunk line incoming ring to the subscriber station. At this time, the subscriber circuit is a key subscriber subscriber circuit 117 if the incoming extension subscriber is a key phone telephone, and a general subscriber circuit 115 if the incoming extension subscriber is a normal telephone.

With the trunk line incoming ring serviced to the subscriber station STA as in step 400 of FIG. 4, the central processing unit 111 proceeds to step 411 to check whether the trunk line subscriber has abandoned the call. In other words, the CPU 111 checks the CO line 119 in step 411 to check whether the CO line transitions to the on-hook state. If the CO line transitions to the on-hook state, the CPU 120 controls the switching circuit 114 and the subscriber circuit in step 412 to receive a CO line. The supply of the ring is stopped, and the service of the incoming call is terminated at step 413.

In addition, if the CO line maintains the off-hook state in step 411, the subscriber circuit connected to the subscriber subscriber STA is checked in step 421 to determine whether the subscriber subscriber STA is off-hook. At this time, when the subscriber station STA transitions to the off hook state, the trunk line incoming ring is turned off and the switching circuit 114, the trunk line circuit 119, and the subscriber circuit are controlled to form a communication path. In operation 424, the central processing unit 111 controls to perform the CO line call function through the call path formed between the subscriber subscriber STA and the CO line subscriber.

However, if the subscriber station STA remains in the on-hook state in step 421, the central processing unit 111 searches for the trunk line receiving table as shown in FIG. Check it. At this time, if there is an extension subscriber who is off-hook, the central processing unit 111 recognizes this and checks whether the trunk line incoming ring is supplied to the subscriber station STA in step 441. At this time, if the ring signal is not supplied to the subscriber station STA, an initial off-hook function is serviced to the subscriber who is off-hook. However, if the trunk line incoming ring is being supplied to the subscriber station STA, the central processing unit 111 turns off the trunk line incoming ring supplied to the subscriber station STA in step 442, and in step 443, the trunk line circuit 119, the switching circuit 114, and the subscriber circuit. By controlling the control, a currency path is formed between the CO line and the off-line subscribers. In step 444, the call function between the subscriber station and the trunk line which is off-hook is serviced. That is, when the extension subscriber STA does not respond while the trunk line incoming table is created as shown in FIG. 3a and the trunk line incoming ring is supplied to the subscriber station STA, the central processing unit 111 determines the state of the subscriber subscriber STB-STH. Check it. At this time, if any extension subscriber of the extension subscriber STB-STH is off-hook, the central processing unit 111 forms a communication path between the off-hook extension subscriber and the trunk line to serve a call function.

However, if the internal subscriber STB-STH does not off-hook in steps 431-437, the CPU 111 returns to step 411 again and repeats the above steps.

Therefore, when a station extension ring is being serviced to a subscriber by an incoming call, when the corresponding station subscriber is absent or unable to answer, the adjacent station subscriber will lift the handset automatically. It turns out that the automatic pickup function can be implemented.

Although FIG. 4 illustrates an automatic pick-up method for incoming calls, the automatic pick-up function can be performed by the same method even when the extension is received and when the door phone is received. That is, when an extension destination table is registered as shown in FIG. 3B and an extension subscriber registered with another extension reception table is called by any extension subscriber, an extension subscriber registered in the same extension reception table as the extension subscriber who has been received is displayed. Off-hook enables the automatic pickup of incoming calls. In addition, as shown in FIG. 3C, when a door extension table is registered and another extension subscriber registered in the door reception table is off-hook while being serviced by a random extension subscriber of the door ring, an automatic pickup function for door reception can be performed. have.

Therefore, if any of the extension subscribers received as described above are absent or unable to answer, the subscribers subscribed to the same destination table can be automatically switched to pick up the handset to form a call path, thereby improving call response speed. There are a number of advantages.

Claims (3)

An automatic pick-up service method for a key telephon having a called table in which a plurality of extension subscribers are designated as a group, the method comprising: supplying a ring to an incoming subscriber when a call is generated; and when the called extension is on hook, The process of examining the status of the extension subscribers of the destination table belonging to the group of subscribers, and the process of forming a call path with the corresponding subscribers during the off-hook subscribers belonging to the destination table during the inspection process Auto pickup method. An automatic pick-up method of a key telephone system having a destination table for designating a plurality of extension subscribers as a destination group and storing a number of extension subscribers belonging to the group, the method comprising: providing a ring signal to a destination extension subscriber when a call occurs; A process of checking a state of the called extension subscriber, a process of forming a call path with the called subscriber when the incoming extension subscriber is in the off-hook state during the inspection of the incoming extension subscriber, and making a call service; And checking the status of the extension subscribers registered in the destination table sequentially when in the hook state, and returning to the state inspection process of the destination subscriber when the extension subscribers of the reception table are all on hook; In the process of sequentially checking the status of extension subscribers registered in When the subscriber line off-hook state detection automatic pickup method of the key telephone system characterized in that constituted by any process that calls to form an extension to the subscriber with the call of the called subscriber to the ring stop the supply and off-hook. The system of claim 2, wherein the incoming table stores a trunk line receiving table for storing the numbers of the subscribers for performing the automatic pickup function when the incoming call is received, and stores the numbers of the subscribers for performing the automatic pickup function for the incoming call. An automatic pick-up method for a key telephone system, comprising: an extension table and a door reception table for storing the numbers of the subscribers for performing the automatic pickup function when the door phone is received.