KR19990038241A - How to handle relay call in private exchange - Google Patents

Abstract

The present invention relates to a relay call processing method of a private exchange which allows a private exchange to process a call as receiving a relay line occupancy signal (seizure) from a calling party. If necessary, the relay line signal is allocated, the number is received, and with the help of the number analysis and routing function, the relay line occupancy signal is sent to the called party, the number is transmitted, and when the answer signal is received from the called party, the call is established and then dialed. When receiving a recovery signal from the side, it is possible to process a relay call in charge of releasing a call, thereby facilitating a call with each subscriber subscribed to the exchange.

Description

How to handle relay call in private exchange

The present invention relates to a relay call processing method of a private exchange, and more particularly, to a relay call processing method of a private exchange which allows a private exchange to process a call according to a relay line occupying signal (seizure) received from a calling party.

The present invention, when receiving a relay line occupancy signal from the calling party in a private exchange, allocates a relay line signal as needed, receives a number, and transmits the relay line occupying signal to the called party with the help of a number analysis and routing function and transmits the number. The purpose of the present invention is to provide a relay call processing method of a private exchange which handles a relay call in charge of establishing a call when a response signal is received from a called party and releasing the call when receiving a recovery signal from the calling party. .

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

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

<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 a relay call processing method of a private exchange according to the present invention, wherein each of the first, second, and third access switching subsystems 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 a relay call processing method of a private exchange according to FIG. 1.

First, when receiving the relay line occupied signal from the calling party, it requests the information of the route to which the corresponding relay line belongs to the routing function, receives information about the relay line signaling method and the inserted number from the routing function, and allocates the relay signal according to the relay signal system. For example, when the relay line signaling method is R2, an R2 relay line signaling device is allocated) and a signaling path is connected, that is, the incoming line occupation is handled (20).

Next, when receiving a number from the calling party, it requests a prefix analysis with the number analysis function, receives the number of numbers requested by the number analysis function, requests routing as a routing function, and requests routing from the routing function. It waits for the outgoing line occupation request, i.e., receives the number (22).

Subsequently, upon receiving the outgoing line occupancy request from the routing function, the outgoing line occupancy signal is transmitted to the called party, that is, the outgoing line call is processed (24).

When receiving a response signal from the called party, the system sends a response signal to the calling party and establishes a call, that is, processes the call (26).

In addition, when the receiver receives a recovery signal (clear backward) from the called party, it forwards it to the calling party, and if it receives a recovery signal from the calling party, it delivers it to the called party and terminates the call, that is, processes the release of the call (28).

As described above, in the present invention, when a relay line occupancy signal is received from a calling party in a private exchange, the relay line signal is allocated as necessary, the number is received, and the relay line occupying signal is received to the called party with the help of number analysis and routing function. When a call is received and a number is sent and a response signal is received from the called party, the call is established, and when a recovery signal is received from the calling party, the call is handled to handle the relay call which is responsible for releasing the call. There is an effect that facilitates.

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 outgoing line call after performing the second step 22 A third step (24), a fourth step (26) of processing the establishment of the call after performing the third step (24), and a fifth step (28) of processing the release of the call after performing the fourth step (26). In the relay call processing of a private exchange including: The first step (20) receives a relay line occupied signal from the calling party to request information on the route to which the corresponding relay line belongs to the routing function, and receives information on the relay line signaling method and the inserted number from the routing function to receive the relay line signaling method. And relaying a relay line signal and connecting a signaling path. The method of claim 1, The second step 22, when receiving a number from the calling party, requests a prefix analysis to the number analysis function, receives as many numbers as required by the number analysis function, and then requests routing to the routing function. And waiting for the outgoing line occupancy request from the routing function. The method of claim 1, And the third step (24) transmits the outgoing line occupancy signal to the called party when the outgoing line occupancy request is received from the routing function. The method of claim 1, The fourth step (26) is a relay call processing method of the private exchange, characterized in that when the response signal from the called party sends a response signal to the calling party and establish a call. The method of claim 1, The fifth step 28 relays the receiving party's recovery signal (clear backward) from the called party to the calling party and, upon receiving the recovery signal from the calling party, transfers it to the called party and terminates the call. Call processing method.