KR20000040019A - Method for implementing call pick-up using keyphone in private branch exchange system - Google Patents

Abstract

PURPOSE: A method for implementing call pick-up using a keyphone in a private branch exchange system is provided to achieve a call pick-up function by using DID(Direct Inward Dialing). CONSTITUTION: A digital trunk circuit board(10) as a local board in a private branch exchange contains a digital DID trunk line link connected with a PSTN(Public Switched Telephone Network) subscriber. A plurality of keyphones(20,30) stores trunk line information. A digital subscriber line circuit board(40) as a local board in the private branch exchange is installed inside of the private branch exchange and contains a plurality of keyphones(20,30). A plurality of single line circuit boards(50,60) contain general telephones.

Description

Implementing Surrogate Response Using Keyphone in Private Exchange System

The present invention relates to a method of implementing a surrogate response using a keyphone in a private exchange system, and more particularly, to a method of enabling a surrogate response by identifying a state of an extension received by a flow button of a keyphone.

In general, secretarial agencies that use private exchanges to answer calls are absolutely necessary to find out which company an external subscriber called. This is because you need to know the company that is called so that you can respond by putting your company name in the greeting. At this time, it is important that the service provider does not notice that the company called by the external subscriber receives the call from another place.

The method of knowing which company is called by the incoming line is conventionally connected to the telephone line by connecting the C / O (Central Office) line to the telephone company for each company serviced by the secretary agency. Line). Here, the C / O line is a line connecting the telephone company and the telephone of a general home, and the DIL is a method in which an external general subscriber is called only at a predetermined extension when the external subscriber is talking to an extension subscriber of a private exchange.

When the line is configured as above, 100 or 200 C / O lines such as the above are required even when the number of firms serviced by a non-secretary agent is quite large, for example, 100 or more than 200. .

FIG. 1 is a block diagram illustrating a program mounted in an apparatus for implementing a surrogate response using a key phone in a conventional private exchange system and a device related to the program. FIG. 2 is a surrogate using a key phone in a conventional private exchange system. This is a flow chart showing the flow of how to implement a response.

Referring to FIG. 1, an apparatus for implementing a surrogate response using a key phone in a conventional private switching system includes a local (local network) in a private switch that accommodates a C / O line connected to a public switched telephone network (PSTN) subscriber. Analog Trunk Circuit Board (1), a trunk line call (2) which is a program in a private exchange which is mounted in the private exchange and processes messages generated in the trunk, and in the private exchange. An extension call 3, which is a program in a private exchange that is mounted and processes messages generated by an extension subscriber, a digital key phone 4 in which trunk line information is prestored in a flow button, and a local in a private exchange that accommodates the digital key phone. It comprises a subscriber line circuit board (Digital Subscriber Line Circuit Board) (5).

In the private switching system configured as described above, a surrogate response using a keyphone is ringed at the private exchange when a public switched telephone network (PSTN) subscriber calls. An analog trunk circuit board is used. Board (1) detects this and the ring is received (S1). When the incoming ring is detected, the fact is reported to a call, which is a program pre-installed in the private exchange. The CO line call informs the key phone user that the flow button of the key phone blinks when the incoming line is received at a specific CO line (S2). In addition, when a call arrives at a specific CO line, the CO call program is set to give a ring to a designated station, that is, the station receives ring service by the DIL (S3).

Subsequently, when the key phone user presses the flashing flow button of the key phone, the corresponding information is reported to the CO line call and the call is made (S4) to control the flow button of the key phone to indicate that the incoming call is answered. At this time, the referenced information is the incoming trunk line port. In addition, if the corresponding trunk line is stored in the flow button of the keypad, the LED (Light Emitting Diode) of the flow button is turned on.

In the conventional private exchange system, a proxy response implementation method using a key phone requires a large number of C / O lines according to a large number of companies served by a secretary agent, making line management difficult and increasing line management costs. There was a problem that the use efficiency of the deterioration.

An object of the present invention has been made in view of the above-mentioned problems of the prior art, and a substitute response using a digital direct inward dialing (DID) as a trunk line to replace the existing C / O line. The purpose of the present invention is to provide a surrogate response using a key phone in a private exchange system that increases the efficiency of use of the track. Here, the DID is a method in which an external general subscriber connects directly to an extension subscriber without the help of a relay station when the external general subscriber communicates with the extension subscriber of the private exchange.

According to an aspect of the present invention for achieving the above object, the step of notifying the incoming call of the extension by the digital DID trunk line to a plurality of key phones, ring the ring to the key phone registered call forward in advance for the incoming extension Forwarding, performing a call by the user of the keyphone, and indicating performing the call.

Preferably, the step of notifying the incoming call of the extension to the plurality of key phones transmits the LED control message to the flow button of all the key phones that the incoming extension is registered in advance so that the LED of the flow button blinks. In the step of delivering the ring to the keyphone, the ring is delivered only to the keyphone to which call forwarding is registered in advance. In addition, the call is carried out by pressing the LED of any one of the LED of the flow button of the blinking keyphone is pressed to establish a call, the call is performed, the incoming extension to the subscriber in use Registering makes it impossible to call the incoming extension from outside. In addition, the step of performing the call is a step of performing a call to the other extension by the user of the key phone that is not performed when the other extension is received while the call is being carried out, and the call is not performed And a system hold registration by the user of the key phone, and a call to the other extension received by the user of the key phone where the call was previously performed according to the system hold registration. The displaying of the call is performed such that the LED of the flow button of the keypad is kept ON.

1 is a block diagram showing a program and an apparatus associated with a program mounted therein in an apparatus for implementing a surrogate response using a key phone in a conventional private exchange system.

Figure 2 is a flow chart showing the flow of a proxy response method using a key phone in a conventional private exchange system.

3 is a block diagram showing the configuration of an apparatus for implementing a surrogate response using a key phone in a private exchange system according to the present invention.

Figure 4 is a block diagram showing a program and a device associated with the program mounted therein in the apparatus for implementing a surrogate response using a key phone in a private exchange system according to the present invention.

5 is a flowchart illustrating a method of implementing a surrogate response using a key phone in a private exchange system according to the present invention.

Explanation of symbols on the main parts of the drawings

10: digital trunk circuit board 20: first digital key phone

30: n digital key 40: subscriber line circuit board

50: first single line circuit board 60: n-th single line circuit board

70: CO call 80: extension call

Hereinafter, the configuration and operation according to an embodiment of the present invention will be described with reference to the accompanying drawings.

3 is a block diagram showing a configuration of an apparatus for implementing a surrogate response using a key phone in a private exchange system according to the present invention, and FIG. 4 is an apparatus for implementing a surrogate response using a key phone in a private exchange system according to the present invention. A block diagram showing a program mounted therein and an apparatus associated with the program is shown. FIG. 5 is a flowchart illustrating a method of implementing a surrogate response using a key phone in a private exchange system according to the present invention.

Referring to FIG. 3, the apparatus for implementing a surrogate response using a key phone in a private switching system according to the present invention includes a digital trunk circuit board (Local) in a private switch that receives a digital DID trunk line link connected to a PSTN subscriber. Digital Trunk Circuit Board) 10, a plurality of digital key phones 20 and 30 in which the trunk line information is pre-stored in the flow button, and a local board in the private exchange which is mounted in the private exchange to accommodate the plurality of digital key phones. It comprises a subscriber line circuit board (40) and a plurality of single line circuit boards (50, 60) for accommodating general telephones.

Here, the apparatus according to the present invention uses a digital DID link as a trunk line to replace the existing C / O line, which requires the installation of many lines for secretarial service. The digital DID link is not only excellent in call quality, but also widely spread, and can be easily opened with a telephone station, and also has the advantage of calling the entire extension subscriber of the private switching system.

Referring to FIG. 4, a program mounted in a private exchange according to the present invention is a trunk line call 70, which is a program mounted in the private exchange and processing a message generated in a trunk, and a station subscriber mounted in the private exchange. It is configured to include an extension call 80 that is a program that processes messages that occur in the.

In order to use the apparatus according to the present invention configured as described above, a digital DID is first opened with a telephone station. In general, one link is sufficient. Where 1 link is 24 or 30 channels. Subsequently, a plurality of digital key phones are installed, and a plurality of single line circuit boards 50 and 60 are mounted in slots of the private exchange to generate extension numbers. The call extension is distributed to the plurality of digital key phones 20 and 30 by distributing the generated extension numbers, and the corresponding general phone information is stored in the flow buttons of the plurality of digital key phones 20 and 30. At this time, one general telephone number represents one company. In addition, the plurality of digital key phones 20 and 30 store the extension information in the flow button so that the state can be visually checked even if the extension is not forwarded to the user. On the other hand, ordinary telephones do not need to be physically connected and only need to register call forwarding.

In the private switching system according to the present invention configured as described above, a proxy response implementation method using a key phone detects an extension call in the private exchange from the PSTN and detects a report on a trunk line call, which is a program pre-installed in the private exchange, when the digital trunk circuit board is detected. Done. In the CO line call, the LEDs of the flow buttons of all the digital keys on which the incoming extension is stored flash to indicate that the extension is received. In this case, when a subscriber who receives a ring is reported to an extension call by a call forwarding service registered by the receiving station, the extension call provides ring service only to a specific extension, and the trunk line call is ringed with the first called subscriber information and ring. Store subscriber information to receive. Subsequently, when the key phone user presses the LED of the flashing flow button, the corresponding information is reported to the CO line call and the call is controlled to control the flow button of the digital key phone to indicate that the incoming call is answered. At this time, the referenced information is information of the first called subscriber stored in advance. If the digital keyphone user puts a call on hold, the message is reported to the CO line call. The CO line call puts the CO line on hold and notifies this to the flow button of each digital key phone. The LED is determined by determining the position of the flow button of each digital key phone to be controlled by the information of the first called subscriber. Make it blink. Here, the actually held call is a trunk line, but is displayed on the flow button of each digital key phone by the extension information first called by the trunk line. And, if the call is established, the extension call is controlled so that it is not possible to call the extension on the outside. When the call is terminated, the CO line call clears all the stored information, and the extension call controls to call the extension from the outside.

Referring to Figure 5 in more detail, first, when the trunk line incoming to the digital trunk circuit board (S10) by sending the LED control message to the flow button of all the incoming digital incoming phone to the LED blinks (S20). The incoming extension transfers the ring to the digital keyphone that is registered in the call forwarding (S30). Pressing the flow button of any one digital key phone among the flashing flow button of all the digital key phone (S40) is a call with the corresponding CO line. At this time, the LED of the flow button to be in the on (ON) state to display the CO line responded. In addition, when off-hook the handset of the digital keyphone that is registered in the call forwarding is transmitted (S40) is a call with the corresponding CO line. On the other hand, when the incoming call is received by matching the flow button of each digital key phone with the name of the company performing the secretary agency business, the external subscriber does not notice that the surrogate responds when the key phone user greetings with the company name. do. Only if these services are available will the secretariat have many subscribers.

When a call is made with a CO line, the first called extension is registered as a subscriber in use so that the call is impossible from the outside. Otherwise, since the CO line to be used is a digital DID, it is possible to call the same extension as the called extension, which may cause confusion in secretarial services. If a system hold is registered during a call, it is a trunk line but the LED of the flow button of the digital keypad for the first called station flashes to indicate that the system is placed on hold. The system call registered call (Call) is able to make a pending CO line subscriber call by pressing the flow button of the flashing digital key phone. Here, even if a secretary agency's keyphone user receives a call instead of a company that is in charge of the call, the company's name can be grasped by a floating button to respond even if the call is handed over to the keyphone user. And natural service is possible.

When the call is terminated, the LED of the flow button marked as in use is turned off to display the idle state, and the call can be made from the outside.

For example, the number 2000 is designated to the first digital key phone and the number 2001 to the second digital key phone in advance. Then, 200 to 215 are assigned to the extension subscribers generated by the first single line circuit board, and 216 to 231 numbers are assigned to the extension subscribers generated by the second single line circuit board. In addition, the extension number 200 ~ 215 subscribers are registered in advance to be transferred to the first digital key phone, the extension number 216 ~ 231 subscriber is to be transferred to the second digital key phone. And, all the extension numbers 200 to 231 are assigned to the flow buttons of the first and second digital keys. At this time, if the number of flow buttons is insufficient, the number of flow buttons is increased by using a direct station selector (DSS).

When the digital DID incoming call calls the extension 200 in this case, the LEDs of the first and second digital flow buttons, which have previously designated the extension number 200, flash. Then, the first digital key phone registered in advance for the extension number 200 receives the ring. When the first and second digital flow buttons which the handset is off-hook or flashing in the first digital keyphone are pressed, a call is made, and the LEDs of the flashing first and second digital flow buttons are turned on. The user of the digital key phone sends a greeting corresponding to the company name designated in advance to the extension 200 to perform the secretarial service. Here, since it is a digital DID trunk line, the external call number is XXX-X200. At this time, when the external extension 200 is called, the called external subscriber receives a busy tone and recognizes that he is busy. And, when the call is terminated, the LED of the flow button that was in the call recovery state is off.

Here, when the DID incoming call calls the extension number 201 while the user of the digital key phone is in a call, the LEDs of the first and second digital flow buttons which have previously designated the extension number 201 blink. The first digital keyphone is in a call but is ringed by an auto hold function. Then, the other digital key phone user presses the flow button flashing on the second digital key phone to respond. At this time, the other digital key phone user responds by greeting in accordance with the company name specified in the extension number 201. Since the second digital keyphone is not the company of the digital key phone user, the other digital key phone user responds only until the call in the first digital key phone is terminated, and the system holds a registration when the call is terminated in the first digital key phone. do. When the system is suspended, the flow button of extension number 201 flashes again. The digital key phone user presses the flow button of the extension number 201 of the first digital key phone to perform the secretarial service corresponding to the company designated in the 201. In addition, since the extension received by the flow button is displayed, it is not necessary for the user of the second digital key phone to notify the user of the first digital key phone which company the incoming call is. And, if the call is restored after the call, the LED of the floating button is off.

As described above, the present invention can attract secretaries as many as the number of stations that can be used in a private exchange even with a small number of trunk lines, thereby performing secretarial service, thereby reducing the cost of maintaining trunk lines, and using line efficiency. There is an effect to increase.

In addition, according to the present invention, since one digital key phone subscriber can respond to a plurality of extensions, it is possible to smoothly perform a secretarial service even with a small number of employees, thereby reducing labor costs.

Claims (5)

Informing the plurality of key phones of incoming calls by the digital DID trunk line; Delivering a ring to a keyphone to which call forwarding is registered in advance for the received extension; Making a call by the user of the key phone; And a method of implementing a surrogate response using a key phone in a private exchange system, the method comprising: displaying the performance of the call. The method of claim 1, wherein the step of notifying the incoming call to the plurality of key phones comprises transmitting an LED control message to the flow buttons of all the key phones to which the incoming extension is registered in advance so that the LED of the flow button blinks. A surrogate response using a key phone in a private exchange system. The method of claim 1, wherein the step of performing the call is a private exchange characterized in that the call is established by pressing the LED of any one of the LEDs of the flow button of the blinking keyphone is pressed. How to implement surrogate response using key phone in system. 2. The proxy response of claim 1, wherein the step of performing the call registers the incoming extension as a subscriber in use so that it is impossible to call the incoming extension from the outside. How to implement. The method of claim 1, wherein the step of performing the call comprises the step of performing a call to the other extension by a user of a key phone in which the call is not performed when another extension is received while the call is being carried out; Registering a system hold by a user of a key phone in which the call is not performed; And a call to the other extension received by the user of the keyphone in which the call was previously performed according to the system hold registration.