KR19990038239A - How to handle incoming call at private exchange - Google Patents

Abstract

The present invention relates to an incoming call processing method of a private exchange which allows a private exchange to process a call according to an occupancy signal from another exchange. In the present invention, a private call path is received by receiving an occupation signal from another exchange. It is to facilitate incoming calls with each subscriber who is subscribed to another exchange by processing incoming calls that are in charge of the process of putting a call into a busy state and restoring a call.

Description

How to handle incoming call at private exchange

The present invention relates to an incoming call processing method of a private exchange, and more particularly, to an incoming call processing method of a private exchange which allows a private call to be processed according to an occupancy signal from another exchange.

The present invention provides a method for processing incoming calls of a private exchange, which receives incoming signals from other exchanges, processes incoming calls that are in charge of the process of constructing necessary call paths, making a call busy, and restoring the call. The purpose is to provide.

1 is a block diagram showing an embodiment of a private exchange for applying the incoming call processing method of the private exchange according to the present invention;

Figure 2 is a flow chart showing an embodiment of an incoming call processing method of a private exchange according to Figure 1 step by step.

<Description of Symbols for Main Parts of Drawings>

10,12,14: first, second, third access switching subsystem

16: I / O subsystem

The above and other objects and various advantages of the present invention will become more apparent from the preferred embodiments of the invention described below with reference to the accompanying drawings by those skilled in the art.

Hereinafter, an embodiment of the present invention for achieving the above object in detail.

1 is a block diagram showing an embodiment of a private exchange for applying an incoming call processing method of a private exchange according to the present invention, wherein each of the first, second, and third access switching subs of each basic unit system of the private exchange is shown; Access Switching Subsystem (ASS) 10, 12, 14 and an Input / Output Subsystem (IOS) 16 for matching with a system operator.

An embodiment of a private exchange for applying the present invention made as described above will be described in detail with reference to FIG. 2.

First, each of the first, second, and third access switching subsystems 10, 12, and 14, which are the basic unit systems of the private exchange, has a matching function for accommodating the subscriber and the relay line, the signal from the subscriber, and the switching period signal processing. It provides subscriber circuit and line test function as well as function for switching function for communication and communication line.

Next, the input / output subsystem 16 for matching with the system operator is connected to each of the first, second, and third access switching subsystems 10, 12, and 14 by a redundant T-bus. Performs program loading, data back-up, storage and analysis functions of the second and third access switching subsystems 10, 12, and 14, and a man machine communication function with a system operator. To provide.

FIG. 2 is a flowchart illustrating an exemplary embodiment of an incoming call processing method of a private exchange according to FIG. 1.

First, when a seizure signal is received from another exchange, information about a corresponding route is analyzed to obtain information necessary for receiving and analyzing a number, and the relay line signal is allocated, that is, the incoming line occupation is processed (20).

Next, receive the numbers and analyze them to obtain various information about the called party.When the called party is determined as a result of the called party number, the calling party is determined by analyzing the calling party's class and the calling party's class, and the call signal for the incoming call. And transmit the call tone, i.e., receive the number (22).

Subsequently, upon receiving the response signal from the called party to which the call signal is being transmitted, the call signal and the call tone are cut off, the call path is connected, and charging is started, that is, the incoming call is processed (24).

When receiving the called party disconnection signal in the busy state, it connects a ring tone according to the release condition, stops charging, and terminates the call when receiving an outgoing subscriber recovery signal or calling party recovery signal (26).

In addition, when a call disconnection signal is received from an originating exchange in a busy state, a busy tone is connected according to a release condition, the billing is stopped, and the call is terminated, i.

As described above, the present invention subscribes to another exchange by processing an incoming call which is responsible for the process of constructing a necessary call path, making a call busy, and restoring by receiving an occupancy signal from another exchange in a private exchange. It is easy to talk to each subscriber.

Claims (5)

A first step 20 of processing incoming line occupancy, a second step 22 of processing number reception after performing the first step 20, and a third step of processing an incoming response after performing the second step 22 A step 24, a fourth step 26 of processing a call release after performing the third step 24, and a fifth step 28 of processing a call release after performing the fourth step 26. In incoming call processing of a private exchange, In the first step 20, when the seizure signal is received from another exchange, the information of the corresponding route is analyzed to obtain information necessary for receiving and analyzing numbers, and the relay line signal is allocated. Treatment method. The method of claim 1, The second step 22 receives the numbers and analyzes them to obtain various information about the called party.When the called party is determined as a result of the called party number, the second step 22 analyzes the grade of the calling subscriber and the grade of the called subscriber to determine whether the incoming call is possible. An incoming call processing method for a private exchange, characterized by transmitting a call signal and a call tone for a possible call. The method of claim 1, In the third step 24, when a response signal is received from the called party to which the call signal is being transmitted, the incoming call processing of the private exchange is characterized in that the call signal and the call tone are cut off, the call path is connected, and billing is started. Way. The method of claim 1, The fourth step 26 is characterized in that when the incoming subscriber disconnection signal is received in a busy state, the ringing tone is connected according to the release condition, the charging is stopped, and the call is terminated when the calling party recovery signal or the calling party recovery signal is received. Incoming call processing method of a private exchange. The method of claim 1, The fifth step 28 is characterized in that when receiving a call disconnection signal from the calling exchange in the busy state, the call is connected according to the release condition, the billing is stopped, and the call is terminated when the incoming subscriber recovery signal is received. Method of handling incoming call of exchange.