KR19980067461A - Multi-call service method of exchange - Google Patents

Abstract

When the multi-subscriber incoming service method of the exchange cannot reach the switchboard, the multi-subscriber incoming call method activates the multi-subscriber function to register the request information in the queue, retrieves the contents of the queue, and periodically reaches the corresponding subscriber group. In response to any subscriber in the subscriber's group, the incoming call is forwarded to the subscriber.

Description

Multi-call service method of exchange

The present invention relates to an incoming service method of an exchange, and more particularly, to a method for converting an incoming call to a designated subscriber group and serving an incoming service.

1 is a block diagram of a general exchange system, wherein the control unit 111 controls the overall switching of the key telephone system to control call switching and provide various services to a user. The ROM 112 stores basic calls and programs and initial service data of the control unit 111 for performing various functions. The RAM 113 temporarily stores data generated during program execution under the control of the controller 111.

The switching circuit 114 switches various tones and voice data under the control of the controller 111. The subscriber circuit 115 supplies a call current to an extension subscriber (not shown) under the control of the control unit 111 and interfaces a signal between the extension subscriber and the switching circuit 114. Here, the extension refers to a line connecting the switching system and the subscriber telephone. The ring generator 116 generates a ring signal and supplies it to the subscriber line. The trunk line circuit 117 forms a trunk line call loop by seizing the trunk line under the control of the control unit 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.

The tone generator 118 generates various tone signals under the control of the controller 111 and outputs them to the switching circuit 114. A DTMF receiver 119 analyzes a DTMF signal input from the switching circuit 114, converts the DTMF signal into digital data, and outputs the digital data to the controller 111. Here, the DTMF signal input to the DTMF receiver 119 by the switching circuit 114 is a telephone number generated by the trunk line subscriber or a telephone number generated by an extension subscriber. The DTMF transmitter 120 converts the digital data output from the control unit 111 into a DTMF signal and outputs the DTMF signal to the switching circuit 114. Here, the DTMF signal output from the DTMF transmitter 120 becomes the telephone number of the trunk line subscriber generated when the station side calls the trunk line side.

In case of multiple subscribers in the exchange having the above configuration, but the incoming call cannot reach the switchboard, conventionally, the incoming call is transferred to a specific subscriber or a call is transferred to a specific subscriber group. Incoming service or individual incoming service. At this time, when the call is switched to the subscriber group to service the incoming call, the multiple call processing of the subscriber group is switched to another subscriber or an error process when multiple incoming calls are received. In addition, when a call is transferred to the specific subscriber to service an incoming call, if the subscriber is not in a state or cannot receive a call, the switched call cannot be answered, thereby reducing the possibility of response. In addition, even when the individual incoming service of the subscriber group, the same state as in the case of switching to the specific subscriber is caused.

Accordingly, an object of the present invention is to provide a method for grouping multiple subscribers by grouping multiple subscribers when receiving an individual call in an exchange.

It is another object of the present invention to provide a method for preventing a loss of a call by allowing a plurality of trunk line incoming calls to a same subscriber multi-call group in an exchange.

It is still another object of the present invention to provide a method for improving call processing speed according to a response of another subscriber by receiving another subscriber's call of a queue to a subscriber group when a random subscriber response is received in a multiple call state when a plurality of trunk calls are in a waiting state. In providing.

In order to achieve the above object, the present invention provides a multi-subscriber call service method of an exchange, when the incoming call is impossible to reach the switchboard, the subscriber multi-call function is activated to register corresponding request information in a queue and retrieve the contents of the queue. The mobile station periodically attempts to receive the corresponding subscriber group, and when the random subscriber response among the subscriber groups is received, the incoming call is received by the corresponding subscriber.

1 shows a block configuration of an exchange.

2 is a diagram illustrating a structure of a service process processed in a control unit of an exchange.

3A-3D are flow diagrams illustrating multi-call service operations in accordance with an embodiment of the invention.

The configuration of the exchanger for carrying out the present invention is the same as that of FIG. 1, and the reference numerals are the same.

2 is a diagram illustrating a call control process configuration of a control unit 111 of a switch, wherein a trunk line process TP (Trunk Process) controlling a trunk line incoming call, a process ATCP (Attended Console Process) controlling a switchboard, and subscriber multi-calling Subscriber group service process MRSP (Multiple Ring Service Process) that performs the service and subscriber process UP (User Process) that performs the incoming call processing of the subscriber.

3A is a flowchart illustrating a process of processing a CO line process TP when a COP call occurs, FIG. 3B is a flowchart illustrating a call waiting process of a multi-call process MRSP, and FIG. 3C illustrates a multi-call process of a multi-call process MRSP. Fig. 3D is a flowchart showing an incoming process of the subscriber process ATCP.

Referring to FIG. 3A, the processing operation of the trunk line process TP requires that the trunk line process TP establishes a call to the switchboard control process ATCP in step 311 when detecting a trunk line incoming call, and the switchboard control process ATCP in step 313. After determining whether the call is established, if the call can be established, the process proceeds to step 327, and the call is terminated in the general call mode. In this case, the trunk line incoming call is applied to the switchboard and processed normally.

However, when the trunk line incoming call cannot be handled in the switchboard control process ATCP, the trunk line process TP detects the incoming state of the switchboard in step 313, requests for multiple subscribers in step 315, and multiple subscribers in step 317. If it detects a failure of the request, it processes the error tone in step 329 and terminates the incoming service of the trunk line incoming call.

However, if the subscriber multi-call service is available in step 317, the service detects this in step 317, and supplies a confirmation tone by controlling the tone generator 318 in step 319. After waiting for the subscriber's response, if the subscriber responds, it detects it in step 321, and in step 323, it requests the release of subscriber multi-call. In step 325, the switching circuit 114 is controlled to connect the CO line circuit 117 to the subscriber circuit 115. The call is handled by connecting the channel.

Referring to Figure 3b looks at the process of queuing (queue) of the multi-call process MRSP. If the subscriber multi-call request signal output in step 315 of FIG. 3A is output, the multi-call process MRSP receives it in step 341 and registers in a queue in step 343. Thereafter, the multi-call process MRSP checks the success or failure of the subscriber multi-call request in step 345, and if successful, notifies the CO line process TP of success in step 347 and transfers the control right to the CO line process. Then the CO line process TP detects success in step 317. In addition, if it detects that the failure in step 345, in step 349 notifies the failure to the trunk line process TP.

Referring to Figure 3c looks at the multi-call processing of the multi-call process MRSP. In the multi-call service, the multi-call process MRSP retrieves the contents of the queue in step 351 to retrieve the success or failure of the multi-call service, and if successful, the subscriber process UP is driven in step 355.

Referring to Figure 3d looks at the incoming call processing of the subscriber process. If the subscriber process UP is driven in step 355 of FIG. 3C, the subscriber process UP checks in step 361 whether a subscriber call is possible. In this case, if the incoming call is possible, the subscriber process UP detects this in step 363 and processes the incoming call in step 365. After the subscriber response is detected in step 363, and the subscriber response to the CO line process TP in step 369, the call connection and call processing is performed in step 371.

Referring to the subscriber multi-call operation according to the embodiment of the present invention as shown in Figs. 3a to 3d, first, when the CO line process TP controlling the CO line incoming call attempts to establish a call with the switch, If the process ATCP notifies the call establishment that the switchboard cannot be reached, the CO line process TP requests establishment of a call to the designated subscriber group service process MRSP. Thereafter, the subscriber group service process MRSP takes over the trunk call register number from the trunk line process TP and requests the subscriber process UP to receive a multi-call process for subscribers of the subscriber group. The subscriber process UP then performs incoming or outgoing processing according to the subscriber's ability to receive or not. At this time, the subscriber group service process MRSP requests a subscriber attempt to the subscriber process UP to the subscribers whose reception is not received.

Then, the subscriber group service processor MRSP, which is requested to establish the call, registers the CO line register number received from the CO line process TP in the service queue of the corresponding subscriber group, and transfers control to the CO line process TP. Then, the trunk line process TP performs tone processing for the trunk line side caller, and the subscriber group service process MRSP periodically searches for the queue of the subscriber group and makes a call to the subscriber process UP using the trunk line register number in the queue. When the subscriber process UP in the incoming state detects the subscriber's response, the CO line process TP notifies the subscriber's response. Accordingly, the CO line process TP stops the tone processing, connects the call path, and multi-calls the subscriber process UP. Demand release. Then, the subscriber group service process MRSP requests the release of the subscriber process UP, which is being received, to release the subscriber process UPs.

At this time, if the same subscriber group service is requested from a CO line process TP other than the CO line process TP driving the multi-call process, the subscriber line service number MRSP registers the queue number register number in the queue. If the queue is deleted by the response after the multi-recipient processing, the queue service of the FIFO method is started to be processed.

As described above, the multiple call service method according to the embodiment of the present invention can perform the subscriber multi-call function according to the multi-call service, and there is an advantage of reducing call loss according to the queue service. In addition, by configuring the general subscriber group service and the separate subscriber multi-recipient group to serve in the case of non-receiving exchange, subscribers belonging to the multi-recipient subscriber group can belong to other general subscriber groups so that the service is also available in the general subscriber group There is this.

Claims (1)

In the multiple subscriber incoming service method of the exchange, If the incoming call is impossible to reach the switchboard, activate the subscriber multiplexing function to register the request information in the queue, search the contents of the queue, and periodically try to reach the corresponding subscriber group. A method for receiving multiple subscribers in an exchange characterized in that the called party calls the incoming call to the corresponding subscriber in response to the subscriber.