KR100229436B1 - Method for cfb recall in private switching system - Google Patents

Abstract

The present invention relates to a sieveby recall method of a private exchange suitable for allowing a private subscriber to recall a sieveby key of a private guide according to the function when the sieveby function is reserved when the call is recalled according to the private guide. In the private exchange system according to the related art, there is no method of recalling a call proceeded to a subscriber who has registered a sieve bee function with respect to a call transmitted from a private information desk. Since the sieve bee recall function is enabled by the guide 10 so that the guide amount of the private guide 10 can easily know the type of the recalled call, the guide amount is more efficient and active as appropriate to the private guide 10. Service can be enabled to improve the above-described drawbacks.

Description

How to recall CFB in a private exchange

The present invention relates to a call forward busy (CFB) recall method of a private exchange, and more particularly, when a private subscriber is reserved for a sieveby function when a private exchange recalls a call according to a private guide. It relates to a sieveby recall method of a private exchange which is adapted to be recalled by a sieveby key of a private guide according to its function.

First, the sieve bee function is briefly described as an example.

When the calling party makes a call but the called party is busy, this is a function to send a ring tone to the reserved telephone number when the called party is subscribed to the sievebee function. This is a useful service.

In this regard, in the private switching system according to the prior art, there is no method of recalling the call proceeded again to the subscriber who has registered the sieve bee function for the call transmitted from the private guide.

The present invention has been made to solve the above-mentioned drawbacks of the prior art, and the sieve bee recall method of the private exchange can be provided to provide a better quality service so that the guide amount of the private guide can easily know the type of the recalled call. The purpose is to provide.

1 is a block diagram for explaining a sibibe recall method of a private exchange according to the present invention.

2 is a block diagram illustrating an embodiment of a private exchange according to FIG. 1;

Figure 3 is a flow chart showing step by step an embodiment of a sibevy recall method of a private exchange according to the present invention

* Description of the symbols for the main parts of the drawings *

10: private information 20: private exchange

21: line processor 22: main processor

23: private line subsystem 24: trunk line subsystem

25: number translation unit 30: telephone station

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.

Referring to FIG. 1, FIG. 1 is a block diagram illustrating a sieve bee recall method of a private exchange according to the present invention, which includes a private guide 10, a private exchange (DPX-100) 20, and a telephone station ( 30) is made.

At this time, the private exchange 20 and the telephone station 30 described above are connected by a trunk line (co trunk).

The present invention thus made will be described in detail with reference to FIGS. 2 and 3 as follows.

FIG. 2 is a block diagram showing an embodiment of the private exchange 20 according to FIG. 1.

First, when there is a call request from the private information desk 10, the private line subsystem 23 in the main processor (MP) in the private exchange 20 sends the call request to the trunk line subsystem. (trunk line subsystem) (24).

Next, the number translation unit 25 translates the telephone number accordingly to control the trunk line subsystem 24 to set the path of the call to send a ring tone to the corresponding private subscriber or, in the case of localization, a line processor; A call is sent to telephone station 30 via LP) 21 so that a given exchange in telephone station 30 sends a ring tone to the called party.

If such a call processing process is completed normally, the desired party is connected and can talk to each other.

In addition, when there is a call request from the telephone station 30 through the line processor 21, the private line subsystem 23 sends the call request to the trunk line subsystem 24.

Accordingly, the number translation unit 25 translates the telephone number accordingly to control the trunk line subsystem 24 to set the path of the call to send a ring tone to the corresponding private subscriber or to the telephone station 30 through the line processor 21. Call) to send a ring tone to the called party at a predetermined interrogator within telephone station 30.

If such a call processing process is completed normally, the desired party is connected and can talk to each other.

Figure 3 is a flow chart showing step by step an embodiment of the sibebe method of the private exchange 20 according to the present invention.

First, when an external general subscriber requests a call with a private subscriber to the private guide 10, the private guide 10 transmits a call to the corresponding private subscriber (202).

Next, it is determined whether the private subscriber is registered with the sieve bee (203), if the private subscriber is busy (busy) and the sieve bee is not registered, a busy report (busy report) to the caller side (204), on the contrary, If the sievbe is registered, the call forward (call forward) to the registered private subscriber (205).

Subsequently, it is determined whether a ring tone is generated (206), so that a normal call is made when a caller answered without a ring tone is generated (207). A recall is requested (208) to turn on a predetermined sieve key of the private guide 10 (209).

As described above, the present invention enables the sieve bee recall function to the private guide 10 so that the guide amount of the private guide 10 can easily know the type of the recalled call. 10) It is effective to enable more efficient and active service as appropriate.

Claims (1)

If an external general subscriber requests a call to a private subscriber according to a preset private guide, the private guide includes a first step (201, 202) of transmitting a call to the private subscriber; After performing the first steps 201 and 202, it is determined whether the private subscriber is registered with call forward busy (CFB), and if the private subscriber is busy and the sievebee is not registered, the caller is reported to the calling party. a second step (203, 204, 205) of performing a (busy report) and making a call forward to the registered private subscriber if the sieve bee is registered; After performing the second step (203, 204, 205), it is determined whether a ring tone is generated, and if a subscriber who is called without a ring tone is answered, a normal call is made. and a third step (206, 207, 208, 209) of requesting a recall to light the predetermined sieve key of the private guide.

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