KR100255319B1 - Method for processing call incoming from office line in key telephone system - Google Patents

Abstract

PURPOSE: A method for processing an incoming call signal received through a central office line in a keyphone system is to connect an incoming call signal to an extension line directly by performing an automatic relay service. CONSTITUTION: Ordinary called extension numbers and automatic-relay called extension numbers are registered according to respective central office lines. In case where a ring incoming call signal is received from the central office line(201), a corresponding automatic-relay called extension number is called(202). After the automatic-relay called extension line is responded, a corresponding ordinary called extension number is called and a timing is counted(204). If there is a request for switching to the automatic-relay extension line(211), a call of the ordinarily called extension line is stopped(212) and a call of the automatic-relay called extension is processed(213).

Description

How to handle incoming / outbound signal in key phone system

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a method for processing incoming calls in a key phone system, and more particularly, to a method for simultaneously processing a general relay service and an automatic relay service using an automatic relay device connected to a key phone system.

In general, in order to use the automatic repeater in the key phone system, the automatic repeater station must be designated as the receiving station (or station group) for the trunk line to provide the automatic relay service. When the device responded, it stopped the ring transmission ringing to another designated station (or station group) together and connected the call line between the called station and the automatic repeater so that all control was done through the automatic repeater. Such a key phone system can be quickly connected to the desired extension if the user is familiar with the automatic relay service function and correctly recognizes the department number or extension number that the user wants to connect. If you do not know the call or guide the wrong extension to choose the extension rather than using the automatic repeater rather difficult to use because it has to go through the process of switching.

Accordingly, an object of the present invention is to designate a general incoming extension and an incoming extension for an automatic relay when the incoming extension of a CO line to provide automatic relay service when the automatic relay device is connected in the key phone system, and the incoming call is first answered when the incoming call is received. The present invention provides a method for processing a call arrival-time signal in a key phone system that allows a call transfer to an extension.

1 is a block diagram of a key phone system according to an embodiment of the present invention.

2 is a control flow diagram for designating a general incoming extension and automatic relay incoming extension for each trunk line according to an embodiment of the present invention;

3 is a control flow diagram for performing call processing in parallel through a general incoming extension and an automatic relay incoming extension when receiving a trunk line ring according to an embodiment of the present invention;

In order to achieve the above object, the present invention designates a general incoming call extension and an incoming call extension for automatic relay when the incoming call extension of a trunk line to provide automatic relay service is used when the automatic repeater is used in a key phone system. When the incoming call is made, first ring the incoming call for the auto-relay and answer the call when the call is connected to the call line of the auto-relay device to receive the auto-relay service. It is characterized by disconnecting the call and connecting the incoming call to the call.

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

1 is a block diagram of a key phone system according to an embodiment of the present invention.

The control unit 10 controls call switching by accessing a preset program, receives and registers a general incoming extension and an incoming call extension for automatic trunking when registering various services and an incoming call extension, and when there is a ring call to the corresponding extension, the designated general incoming extension and automatic relay Ring ring at incoming call extension to control call transfer to incoming call extension. The memory unit 12 includes a ROM that stores the program initial service data for performing a call and various functions, and a RAM that stores data generated during program execution. The trunk line interface 14 forms a trunk line loop by scouring a trunk line in response to the control of the controller 10, and interfaces a signal coming from the trunk line. The key phone line interface 16 supplies the voice current of the voice band to the key phone of the subscriber, and performs the interface between the key phone and the device. The general telephone line interface 18 is connected to the automatic repeater 34, and supplies the call current of the voice band to the automatic repeater 34 and the subscriber's general telephone, and performs the interface between the general telephone and the automatic repeater 34 and the apparatus. The switching circuit 32 switches and connects various tones and voice data under the control of the controller 10. The tone generator 20 generates the various tone signals under the control of the controller 10 and provides them to the switching circuit 18. The ring generator 22 supplies a square wave shaped ring signal to the switching circuit 18 under the control of the controller 10. The DTMF transmitter 24 outputs a DTMF (Dual Tone Multi Frequency) signal under the control of the controller 10. The DTMF receiver 26 analyzes the dual tone multi frequency (DTMF) received from the subscriber of the extension subscriber circuit 16 and applies corresponding digit data to the controller 10. The ring detector 30 is connected to the trunk line interface 14 to detect a ring signal received from the trunk line and provide the ring signal to the controller 10. The loop detector 28 detects whether a loop is formed in response to the trunk line reception by the general incoming station or the automatic repeater 34 and provides the control to the control unit 10.

2 is a control flow diagram for designating a general incoming extension and automatic relay incoming extension for each trunk line according to an embodiment of the present invention;

3 is a control flowchart for performing call processing in parallel through a general incoming extension and an automatic relay incoming extension when receiving a trunk line ring according to an embodiment of the present invention.

1 to 3 will be described in detail the operation of the preferred embodiment of the present invention.

First, the operation of designating a general incoming extension and an automatic relay incoming extension for each trunk line will be described with reference to the flowchart of FIG. 2. When the user selects and inputs a desired trunk line number through the key input unit, the control unit 10 in step 101 Enter the CO line number from the key-phone telephone via key-phone line interface 16. Then, when the user inputs the desired general extension number (or extension group) through the key phone, in step 102, the controller 10 receives it through the DTMF receiver 26 and registers it in the RAM area of the memory 12. When the user inputs the desired auto-relay extension number (or auto-relay extension group) through the key phone, in step 103, the control unit 10 receives this through the DTMF receiver 26 and registers it in the RAM area of the memory unit 12. In addition, the user enters the general call extension time via the key phone. In other words, when there is an incoming call, ring the ring with the auto-relay extension number and enter the time to ring the ring with the general incoming extension. When the incoming call extension time is input, the control unit 10 receives this through the DTMF receiver 26 and registers it in the memory 12. Thereafter, in step 105, the control unit 10 checks whether the incoming extension registration key for each CO line is pressed through the key phone, and terminates the incoming extension registration operation when the incoming extension registration key for each CO line is pressed.

Referring to the flowchart of FIG. 3, a call processing process in parallel when a call is received from a trunk line after registering a general incoming station and an automatic relay station for the corresponding trunk line will be described. In step 10, it is checked whether the trunk line ring incoming is detected from the ring detector 30, and if the trunk line incoming ring is detected, the process proceeds to step 202. In step 202, the controller 10 generates and calls a ring signal with an automatic relay extension number (or extension group) registered in the RAM area of the memory 12. In step 203, the control unit 10 checks whether the automatic relay station has responded through the loop detector 28, and if the automatic relay station has responded, proceeds to step 204. In step 204, the control unit 10 starts counting the general incoming call extension start time and proceeds to step 205. In step 205, the control unit 10 controls the switching circuit 32 to connect the call path between the called station line and the automatic relay line, and proceeds to step 206. In step 206, the control unit 10 checks whether the general incoming call start time registered in the memory 12 has elapsed, and if the general incoming call start time has not elapsed, proceeds to step 211, and if the general incoming call start time has elapsed. Proceed to step 207. In step 207, the control unit 10 controls the switching circuit 32 to apply the ring signal sound generated from the ring generator 22 to the general destination station to call the general destination station. Then, in step 208, the controller 10 checks whether the called party has answered from the loop detector 28, and if the called party answers, proceeds to step 29. In step 209, the control unit 10 controls the switching circuit 32 to release the call path connection between the called station line and the automatic relay station and proceeds to step 210. In step 210, the controller 10 controls the switching circuit 32 to connect the call destination line and the general incoming call line. However, if the called party presses the desired digit according to the guidance message of the automatic relay device before the general incoming call is answered in step 208, the automatic relay device hangs by flashing the hook and then the extension number corresponding to the input digit. Is applied to the control unit 10 through the DTMF transmitter 24. In this case, the controller 10 recognizes that the automatic relay station requests the call switching when the hook flash is generated. Therefore, in step 211, the controller 10 checks whether there is a call change request from the automatic relay station, and proceeds to step 112 if there is a call change request. In step 112, the controller 10 controls the switching circuit 32 to block the ringing tone supplied from the ring generator 22 to the general incoming station to stop calling the general incoming station and proceeds to step 213. In step 213, the controller 10 handles call switching according to the request of the automatic relay station.

As described above, the present invention allows a user familiar with the automatic relay service to directly connect a desired extension by performing the automatic relay service, and is connected to the general incoming station designated by each trunk line even if the user is not used to the automatic relay service. The advantage is that you can connect to the extension you want more quickly.

Claims (6)

In the key-in system signal processing method in the key phone system, Specifying the general extension number and the auto-relay extension number for each trunk line; Calling the designated call forwarding extension number after the answering call is made by the designated auto-receiving extension number when the incoming call is ringed from the trunk line; In the key phone system, the incoming call is made by the call receiving system by stopping the call of the general incoming station and processing the call by the automatic repeating station when the call is requested to be answered after the auto-received extension answers the ring call. How to handle a call. The method of claim 1, A process of disconnecting a call connected between the called party line and the auto-received extension line and connecting the call path between the answered call extension line and the called station line when the general incoming call is answered before the call transfer request is made by the auto-received call extension; The first-come-first-served signal processing method in a keyphone system, characterized by further comprising: a. The process of claim 2, wherein the designation of the called extension number is performed by: Selecting and inputting the desired CO line number; Selecting the C.O.line number and entering the general incoming extension number to register; Registering the general incoming extension number and registering the incoming extension number automatically; In the key phone system, the incoming call signal processing method comprising the step of registering the call forwarding time of the general incoming station after registering the incoming call extension number. In the key-in system signal processing method in the key phone system, Specifying the general extension number and the auto-relay extension number for each trunk line; Calling the designated automatic relay incoming number when there is a ring incoming from the trunk line; Counting a general extension call start time when the auto-received extension answers by calling the auto-received call number; Connecting a call path between the incoming trunk line and the auto-received extension when there is a response from the auto-received extension; Calling the designated general incoming extension number after connecting the incoming call extension with the call extension; The trunk line in the key phone system, characterized in that the automatic call forwarding station stops the call of the general incoming station and processes the call transfer by the automatic call extension when there is a call change request after the answering the ring call. Incoming signal processing method. The method of claim 4, wherein A process of disconnecting a call connected between the called party line and the auto-received extension line and connecting the call path between the answered call extension line and the called station line when the general incoming call is answered before the call transfer request is made by the auto-received call extension; The first-come-first-served signal processing method in a keyphone system, characterized by further comprising: a. The method of claim 5, wherein the designation of the called extension number comprises: Selecting and inputting the desired CO line number; Selecting the C.O.line number and entering the general incoming extension number to register; Registering the general incoming extension number and registering the incoming extension number automatically; In the key phone system, the incoming call signal processing method comprising the step of registering the call forwarding time of the general incoming station after registering the incoming call extension number.

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