KR960001086B1 - Subscriber call confirmation method for a private exchanger - Google Patents

Abstract

outputting a state information of a corresponding exclusive line to a junction station and displaying the information on a LCD of the junction station, in case of inputting an exclusive number to a central processing unit; in case that a communication confirmation button is inputted and a corresponding communication confirmation command is then applied to the central processing unit, entering a communication confirmation mode by the central processing unit; connecting a reception call path and a transmission call path of the first and second subscribers to the first and second lines, respectively, and connecting the paths to the third and fourth lines; outputting a digital sound signal applied to the communication path through the first to fourth lines to a switching circuit; applying the digital sound signal to junction interface circuit by switching circuit; converting the digital sound signal into an analog sound signal and outputting the converted signal to the junction station; and if a communication confirmation release command is inputted in the central processing unit, completing a control operation for the subscriber's communication confirmation by releasing the subscriber's communication confirmation mode.

Description

How to check subscriber call on private exchange

1 is a diagram for explaining a general call confirmation method in a conventional private network.

2 is a view for explaining a call confirmation method in a conventional private network.

3 is a block diagram showing a call confirmation device of the private exchange according to the present invention.

4 is a flowchart illustrating a call confirmation method of a private exchange according to the present invention.

* Explanation of symbols for main parts of the drawings

50,60: private exchange 51,62: subscriber circuit

52,61: dedicated network 53,55: switching circuit

54: switching circuit for conference call 56: conference call circuit

57: repeater interface circuit 59: repeater

The present invention relates to a subscriber call confirmation method of a private exchange. Particularly, when confirming a call for a subscriber calling through a private private network, both subscribers do not change the sensitivity of the calling subscriber when confirming a call for the calling subscriber. The present invention relates to a subscriber call confirmation method of a private exchange so that a call can be confirmed.

In the conventional private exchange, when confirming a call for a subscriber calling through a private private network, the method illustrated in FIG. 1 is used. In FIG. 1, when the subscriber 10 is talking to another subscriber 19 using the private network 12, 15 of the private exchange, the operator of the relay station 14 confirms the call confirmation of the subscriber 10. In order to intercept the incoming call line RX of the subscriber 10 in the communication path between the subscriber circuit 11 and the dedicated network circuit 12 to which the subscriber 10 line is connected, the subscriber 10 calls by listening to the voice call. Check for presence.

The subscriber call confirmation method of the private exchange can check the call of analog subscribers by selecting a certain subscriber who wants to confirm the call among multiple subscribers, but for digital subscribers, both subscribers can simultaneously check the call due to the characteristics of digital subscribers. There is no problem.

In order to improve the above-mentioned conventional problem, the subscriber call confirmation method as shown in FIG. 2 has been used. In FIG. 2, when the subscriber 20 is talking to the subscriber 30 using the dedicated network 23 and 26, the operator of the relay station 25 may check the subscriber 20 to confirm the call of the subscriber 20. ) And the subscriber 20 by intercepting the transmission line TX and the reception call path RX of the subscriber 30 using the conference call circuit 22 to listen to the voice call. It is checked whether or not the call is made using the dedicated network 23.

Such a subscriber call confirmation method of a conventional private exchange can confirm both calls simultaneously in an analog call path or a digital call path, but if the operator of the relay station 25 confirms the call, the subscriber's call sensitivity change is caused by entering the conference call. There is a problem that can not feel good to provide a good call service to the subscriber.

The present invention has been made in view of the above problems, and when a digital subscriber of a private exchange (PBX) calls through a private network to confirm the call for the digital subscriber, the digital subscriber who makes the call changes the call sensitivity. The object of the present invention is to provide a subscriber call confirmation method of a private exchange which enables the operator of the relay station to confirm a call without being recognized.

In the subscriber call confirmation method of the private exchange according to the present invention for achieving the above object, if the leased line number desired to confirm the call is input from the relay station 59 via the relay station interface circuit 57 to the central processing unit. A first step of the central processing unit outputting state information of the leased line corresponding to the corresponding dedicated number to the relay station 59 via the relay station interface circuit 57 and displaying on the LCD of the relay station 57; ; After performing the first step, if the call confirmation button of the relay station 57 is input and the corresponding subscriber call confirmation command is inputted to the central processing unit via the relay interface circuit 57, the central processing unit confirms the subscriber call. A second step of entering a mode; After performing the second step, the central processing unit controls the switching circuit 53 and the conference call switching circuit 54 to the first subscriber on the subscriber circuit 51 side and the second subscriber on the dedicated network circuit 52 side. The incoming call path (RX) and the outgoing call path (TX) to the first and second lines (L1, L2) on the conference call circuit 56 side by the switching circuit 53, and at the same time A third step of connecting the road RX and the transmission call path TX to the third and fourth lines L3 and L4 on the side of the conference call circuit 56 by the conference call switching circuit 54; After performing the third step, the central processing unit controls the conference call circuit 56 to conference the digital voice signal applied to the conference call circuit 56 through the first to fourth lines L1-L4. A fourth step of collecting by the communication circuit 56 and outputting it to the switching circuit 55 side; After performing the fourth step, the central processing unit controls the switching circuit 55 to relay the digital voice signal applied from the conference call circuit 56 to the switching circuit 55 by the switching circuit 55. A fifth step of connecting to the large interface circuit 57; A sixth step of, after performing the fifth step, the relay station interface circuit 57 converts the digital voice signal applied from the switching circuit 55 into an analog voice signal and outputs the analog voice signal to the relay station 59; When the call confirmation is terminated after the sixth step is performed, the call confirmation release button of the relay station 59 is inputted so that the corresponding call confirmation release command is input to the central processing unit via the relay interface circuit 57. And a seventh step in which the central processing unit releases the subscriber call confirmation mode to end the control operation for subscriber call confirmation.

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

3 is a block diagram showing a call confirmation device of the private exchange according to the present invention. In FIG. 3, the call confirmation device provided in the private exchange 50 includes a switching circuit 53, a conference call switching circuit 54, a switching circuit 55, a conference call circuit 56, and a relay interface interface circuit. 57). The switching circuit 53 performs an operation of switching the communication path between the subscriber circuit 51 and the dedicated network circuit 52 under the control of a central processing unit (not shown) provided in the private exchange 50. When the communication path between the subscriber circuit 51 and the dedicated network circuit 52 is connected, the receiving call path (RX) and the transmission call path (TX) under the control of the central processing unit are connected to the conference call circuit 56 side. It is connected to the first and second lines L1 and L2 and at the same time to the conference call switching circuit 54. The conference call switching circuit 54 has a third line on the side of the conference call circuit 56 under the control of the central processing unit for the transmission call path TX and the reception call path RX connected by the switching circuit 53. It connects to (L3) and the fourth line (L4), connects the incoming call path (RX) to the third line (L3) and the transmission call path (TX) to the fourth line (L4). The conference call circuit 56 collects digital voice signals applied through the first to fourth lines L1 to L4 and outputs them to the switching circuit 55 side under the control of the central processing unit. The switching circuit 55 connects the digital voice signal applied from the conference call circuit 56 to the relay interface interface 57 side under the control of the central processing unit. The relay station interface circuit 57 matches the relay station 59 to the private exchanger 50, and transmits a call confirmation command applied from the relay station 59 to the central processing unit. Dedicated line state information applied from the relay to the relay station 59, and converts the digital audio signal applied from the switching circuit 55 to the analog voice signal and outputs to the relay station (59).

When the subscriber call confirmation device of the private exchange configured as described above confirms the call for the digital subscriber calling through the private network, the subscriber call confirmation device of the private exchange is configured in the order shown in FIG.

First, when the operator of the relay station 59 checks the subscriber's call and inputs the desired leased line number and the corresponding leased line number is applied to the central processing unit via the relay station interface circuit 57 (step S1), the central processing is performed. As the device outputs the call status information for the selected leased line to the relay station 59 via the relay station interface circuit 57, the relay line is displayed on the liquid crystal display (LCD) of the relay station 59. The operator at 59 confirms the state of the dedicated line (step S2). Thereafter, the operator inputs the call confirmation button of the relay station 59 to confirm the call of the leased line selected by the operator, and the corresponding subscriber call confirmation command is applied to the central processing unit via the relay station interface circuit 57 (step S3). In step S4, the CPU enters the subscriber call confirmation mode and performs a control operation for subscriber call confirmation. At this time, the central processing unit controls the switching circuit 53 so that the subscriber circuit 51 switches the receiving and transmitting communication paths RX and TX to the first subscriber and the second subscriber on the dedicated network circuit 52 side. (53) to the first line (L1) and the second line (L2) on the side of the conference call circuit 56, and at the same time to control the conference call switching circuit 54 to receive and transmit RX and TX are connected to the third line L3 and the fourth line L4 on the side of the conference call circuit 56 by the conference call switching circuit 54 (step S5). The central processing unit controls the conference call circuit 56 so that the conference call circuit 56 collects the digital voice signal applied through the first to fourth lines L1 to L4 and outputs the digital voice signal to the switching circuit 55 side. (Step S6). Thereafter, the central processing unit controls the switching circuit 55 to connect the digital voice signal applied from the conference call circuit 56 to the relay interface interface 57 side by the switching circuit 55 (step S7). . At that time, the relay station interface circuit 57 converts the digital voice signal applied from the switching circuit 55 into an analog voice signal and outputs the analog voice signal to the relay station 59 (step S8). The operator checks the subscriber's call through the handset (step S9). After the call confirmation is made to the subscriber in this way, when the operator of the relay station 59 inputs the call confirmation release button to terminate the call confirmation (step S10), the corresponding call confirmation release command is transmitted to the relay interface interface circuit 57. Is applied to the central processing unit, and accordingly the central processing unit releases the subscriber call confirmation mode and ends the control operation for subscriber call confirmation (step S11).

In the subscriber call confirmation method according to the present invention as described above, when the digital subscriber makes a call through the leased line, the operator of the relay station can check whether the subscriber wants the call without affecting the sensitivity of the call to the corresponding subscriber. Will be.

Claims (1)

In a subscriber call confirmation method of a private exchange for confirming a call of a digital subscriber making a call through a private lease network, the dedicated line number for which call confirmation is desired is centralized from the relay station 59 through the relay station interface circuit 57. A first step of the central processing unit outputting the state information of the corresponding dedicated line to the relay station 59 via the relay station interface circuit 57 and being displayed on the LCD of the relay station 57 when inputted to the device; After performing the first step, if the call confirmation button of the relay station 57 is input and the corresponding subscriber call confirmation command is inputted to the central processing unit via the relay interface circuit 57, the central processing unit confirms the subscriber call. A second step of entering a mode; After performing the second step, the central processing unit controls the switching circuit 53 and the conference call switching circuit 54 to the first subscriber on the subscriber circuit 51 side and the second subscriber on the dedicated network circuit 52 side. The incoming call path (RX) and the outgoing call path (TX) to the first and second lines (L1, L2) on the conference call circuit 56 side by the switching circuit 53, and at the same time A third step of connecting the road RX and the transmission call path TX to the third and fourth lines L3 and L4 on the side of the conference call circuit 56 by the conference call switching circuit 54; After performing the third step, the central processing unit controls the conference call circuit 56 to conference the digital voice signal applied to the conference call circuit 56 through the first to fourth lines L1-L4. A fourth step of collecting by the communication circuit 56 and outputting it to the switching circuit 55 side; After performing the fourth step, the central processing unit controls the switching circuit 55 to relay the digital voice signal applied from the conference call circuit 56 to the switching circuit 55 by the switching circuit 55. A fifth step of connecting to the large interface circuit 57; A sixth step of, after performing the fifth step, the relay station interface circuit 57 converts the digital voice signal applied from the switching circuit 55 into an analog voice signal and outputs the analog voice signal to the relay station 59; When the call confirmation is terminated after the sixth step is performed, the call confirmation release button of the relay station 59 is inputted so that the corresponding call confirmation release command is input to the central processing unit via the relay interface circuit 57. And a seventh step of the central processing unit releasing the subscriber call confirmation mode to end the control operation for subscriber call confirmation.