KR100208287B1 - Method for processing offering call in the switching system - Google Patents

Abstract

This interception call processing method is to reduce the amount of IPC between the relay line call control unit and the subscriber call control unit when intercepting call processing. This method intercepts the subscriber call control unit when an intercept signal is received through the relay line. When the interrogation signal is received and the subscriber call control unit receives an interception signal, the subscriber checks whether the subscriber is a subscriber who is capable of intercepting service, and if the subscriber is a subscriber who is capable of intercepting service, the pool for three-way call is empty. If the pool is empty, occupy the pool to connect the call mixer for the three-way call, and if the call mixer is connected, the subscriber call controller informs the relay line call controller that the three-way call is possible. Send the. Accordingly, the relay line call control unit is implemented by connecting a path for a call between the operator and the subscriber.

Description

Interception call processing method in exchange

1 is a block diagram of an exchange for performing an interception call processing method according to the present invention,

2 is a flowchart illustrating an interception call processing method according to the present invention.

* Explanation of symbols for main parts of the drawings

100: main processor (MP) 110: line processor (LP)

101: trunk call control (TCC) unit

102: Subscriber Call Control (SCC) unit

The present invention relates to an intercept call processing method in an exchanger, and more particularly, to an intercept call processing method for reducing an IPC (Inter Processor Communication) amount during an intercept call processing.

An interception call occurs when a passive standby operator (also called an operator) intervenes between two subscribers in a call when another subscriber requests the call. In a conventional exchange, when such an intercept call is transmitted through a relay line, the relay line call control unit 101 transmits an intercept request signal to the subscriber call controller 102. Accordingly, the subscriber call controller 102 surveys the CC (Conference Call) Pool to occupy the CC pole, connects a call mixer for three-way calls, and then relays the call to the call controller 101. The intercept call was processed by sending Ring Start signal and incoming signal response signal.

In this case, the ring start signal is a signal for informing whether the subscriber wants to handle a call by intercepting after switching to the hook-on state, and is also called a preliminary signal for a re-ring state. Therefore, when the ring start signal is transmitted in the active state, the relay line call control unit 101 outputs a message to the operator to wait until the subscriber's telephone is hooked on, and when the ring start signal is transmitted in the inactive state, Send a message to perform intercept call processing. The called party answer signal is a signal for informing the call mixer status for the three-way call.

Such signal transmission has conventionally increased the amount of IPC between the relay line call control unit and the subscriber call control unit during interception call processing, thereby increasing the load on the system.

Accordingly, an object of the present invention is to provide an interception call processing method for reducing the IPC amount between the relay line call control unit and the subscriber call control unit during interception call processing to solve the above problems.

The method according to the present invention is an intercept call processing method of an exchange having a main processor configured to include a relay line call control unit and a subscriber call control unit, wherein when an intercept signal is received through the relay line to the relay line call control unit, the subscriber call controller A first sending step of sending out an intercept request signal to the network; Receiving an interception signal, the subscriber call control unit checks whether the corresponding subscriber is a subscriber who is capable of intercepting services; A second checking step of checking whether a pool for a three-way call is empty when the subscriber is a subscriber capable of intercepting service; If the pool is empty, occupying the pool to connect a call mixer for three-party calls; A second call step of transmitting, by the subscriber call control unit, an incoming response signal indicating that the three-way call is possible to the relay line call control unit when the call mixer is connected; The relay line call control unit may include connecting a path for a call between the operator and the subscriber by the incoming response signal.

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

1 is a block diagram of an exchange for performing an interception call processing method according to the present invention, which is a line processor 110, a line processor 110, or a relay line for matching processing with a subscriber that can be accommodated in an exchange. It is configured as a main processor 100 for processing a call applied through (not shown). In particular, the main processor 100 may include a trunk line call control unit (TCC) 101 for controlling call processing with a relay line and a subscriber call control unit (SCC) for controlling call processing with the line processor 110. , 102).

2 is an operation flowchart of an interception call processing method according to the present invention.

The operation of the flowchart shown in FIG. 2 will now be described with reference to FIG. 1.

When the operator sends an intercept call to any subscriber through the relay line, it is transmitted to the main processor 100. The main processor 100 transmits the intercept call sent to the relay line call control unit 101. When the intercept call is received, the relay line call controller 101 transmits an intercept request signal to the subscriber call controller 102.

When the intercept call request signal transmitted from the relay line call control unit 101 is received in step 201, the subscriber call controller 102 proceeds to step 202 to check whether the intercept service can be performed for the subscriber. That is, since the interception service is valid only when the subscriber is busy, the subscriber call control unit 102 is like checking whether the subscriber is busy.

As a result of the check, if the subscriber is not a subscriber capable of interception service, the process proceeds to step 203, and the subscriber call controller 102 transmits a message indicating that the subscriber cannot intercept service to the relay line call controller 101, and intercepts the call processing operation. To exit.

However, as a result of the check, if the subscriber is a subscriber capable of interception service, the flow proceeds to step 204 to check whether the CC pool can be occupied by the CC pool. In this case, the CC poll is information on a group situation in which the call mixer can be executed. If the CC poll is full, the CC poll cannot occupy the CC poll and thus the call mixer is impossible. Therefore, if the CC poll cannot be occupied, the process proceeds to step 205 and the subscriber call control unit 102 sends a caller response signal indicating that the call mixer is impossible to the relay line call control unit 101 and terminates the interception call processing operation.

However, if the CC pole is not full, the process proceeds to step 206 to occupy an empty CC pole, and connects a call mixer for a three-way call in step 207, and proceeds to step 208 to the relay line call controller 101. Sends an incoming reply signal: indicating that a three-way call is possible by interception.

In addition, the subscriber call control unit 102 proceeds to step 209 to request the intercepting tone generation for the subscriber to the line processor 110. At this time, the intercept tone is generated for about 1 to 2 seconds. Then, the subscriber call control unit 102 proceeds to step 210 and connects the passage for the three-way call to notify the subscriber that there is a subscriber who wants an emergency call by intercepting the three-way call and intercepts the call processing process. Quit.

On the other hand, when the relay line call control unit 101 receives an incoming response signal indicating that a three-way call is possible from the subscriber call control unit 102, it connects the pass for the call with the operator.

As described above, the present invention has the effect of reducing the amount of IPC generated during the intercept call processing by performing the intercept call processing only with the 'incoming response signal' between the relay line call control unit and the subscriber call control unit in the exchange. have.

Claims (1)

An intercept call processing method of an exchange having a main processor configured to include a relay line call control unit and a subscriber call control unit, wherein the intercept signal is received by the subscriber call control unit when an intercept signal is received through the relay line. A first sending step of sending a request signal; A first checking step of, when the interception signal is received, the subscriber call controller checks whether the corresponding subscriber is a subscriber capable of interception service; A second checking step of checking whether a pool for a three-way call is empty when the corresponding subscriber is a subscriber capable of interception service; If the pole is empty, occupying the pool to connect a call mixer for a three-way call; A second transmission step of transmitting, by the subscriber call control unit, an incoming response signal indicating that a three-way call is possible to the relay line call control unit when the call mixer is connected; And a relay line call control unit connecting the pass for a call between the corresponding operator and the corresponding subscriber by the incoming response signal.