KR19990034379A - Call waiting service method of private exchange - Google Patents

Abstract

The present invention relates to a call waiting service method of a private switch, and after receiving a digit signal for a special code from a calling party registered with a call waiting service, and if a special code is registered, sending a confirmation tone to the calling party, When a call connection request is sent from any calling subscriber while the calling / called subscriber is connected and busy, the calling subscriber and any calling subscriber are busy with a hook flush signal, and a pending tone is sent to the called subscriber. When the hook flush signal is retransmitted from the calling party, a pending tone is sent to any calling party, and the calling / called party can make a call.

Description

Call waiting service method of private exchange

The present invention relates to a private exchange (Private eXchange), and more particularly to a call waiting service method of the private exchange to wait for the incoming call after registering the call waiting (Call Waiting) service.

In general, a call waiting service is called from another calling subscriber to an outgoing subscriber whose service is registered when a call is connected between a calling party registered in the service and a general called party while the call waiting service is already registered. When the call comes out of the busy state that the call has been sent, another outgoing subscriber to send the ring back tone, the service is registered by the hook flash of the calling subscriber is a service that can be called between the desired incoming subscriber.

The call waiting service method of a conventional private exchange uses subscriber < RTI ID = 0.0 > data in a private exchange using input < RTI ID = 0.0 > Input < / RTI > Processor (hereinafter, referred to as IOP) using man & machine communication (hereinafter, referred to as MMC). The call waiting service is registered by handling (Subscriber Data Handling: hereinafter referred to as SDH).

After registering the call waiting service, the calling party registered with the service dials the called party for call access, and the call is connected and the calling party and the called party make a call.

If the calling party and the called party are busy and the call comes from another calling party, the call waiting service is registered, so the other calling party hears the ring back tone and makes the calling party. There is a problem that there is a call waiting service that can hear a pending sound according to the call waiting service, the call waiting service that can be called by the desired incoming subscriber by the hook flash of the calling subscriber registered service.

The present invention has been made to solve the above problems, and its object is to register a call waiting service, when the calling party is dialed to the called party, when a call is received from another calling party, waiting for an incoming call After the call is registered, the calling subscriber who has registered the service wants to provide a call waiting service method of a private exchange that can call and make a call.

The present invention for achieving the object relates to a call waiting service method of a private switch, after the call waiting service registers with the calling subscriber, receiving a hook off signal and a digit signal for a special code from the calling subscriber; A special code is not registered and transmitting an error tone to the calling subscriber; If a special code is registered, sending a confirmation tone to the calling subscriber; When a call connection request is transmitted from any originating subscriber while the calling / originating subscriber is connected and busy, sending a ring tone to the originating subscriber and sending a ring back tone to any originating subscriber; If a continuous busy signal is transmitted from the originating / receiving subscriber, any outgoing subscriber waiting for a call automatically terminates the ring back tone after 90 seconds, and sends an error tone to any originating subscriber; The calling subscriber and any calling subscriber are in a busy state with a hook flush signal from the calling subscriber, and a pending tone is sent to the called subscriber and placed in a held state; When the hook flush signal is transmitted from the calling subscriber again, the calling / called subscriber is in a busy state, and a holding tone is sent to any calling subscriber and placed in a held state; Receiving the hook-on signal from the calling subscriber, thus terminating the call waiting service.

1 is an overall block diagram of a call waiting service method of a private exchange according to the present invention;

2 is a detailed detailed flowchart of the present invention for a call waiting service method of a private exchange.

<Description of Symbols for Main Parts of Drawings>

10: LP 12: LCS part

20: MP 22: SCC part

24: NTR section 26: SDH section

30: IOP part

Hereinafter, the objects and features of the present invention will be described in more detail with reference to the accompanying drawings so that the objects and features of the present invention can be more clearly understood.

FIG. 1 is a block diagram of an overall method of a call waiting service of a private exchange according to the present invention, including a line processor (hereinafter, abbreviated as LP) 10 and a line call simulator (hereinafter, LCS). D) 12, the main processor (hereinafter abbreviated as MP) 20, subscriber call control (hereinafter abbreviated as SCC) section 22, and It is composed of a number translation (hereinafter abbreviated as NTR) section 24, a subscriber data handling section (hereinafter abbreviated as SDH) section 26, and an IOP section 30.

The LP 10 internally includes the LCS unit 12 and detects a Hook Off / Hook On signal, among which the MP 20 is detected after detecting the Hook Off signal and the digit signal. It is a subprocessor that dials a special code to the SCC unit 22 therein.

The MP 20 internally includes an SCC unit 22, an NTR unit 24, and an SDH unit 26, and includes first, second, and third subscribers connected to the LCS unit 12 in the LP 10; It is an upper processor that performs relay call processing and performs maintenance functions for system state management.

The SCC unit 22 is a subscriber call control block that is connected to the LCS unit 12 to perform home, outgoing, and incoming call processing of the first, second, and third subscribers, and generate billing information and collect statistical data. To the NTR unit 24.

The NTR unit 24 is a number translation block, which analyzes the number information transmitted from the first, second and third subscribers, checks the usage and the destination location, and retransmits it to the SCC unit 22 again.

The SDH unit 26 is a subscriber data handling block. The SDH unit 26 generates, changes, and cancels information on the call waiting service transmitted from the IOP unit 30 and transmits the information to the SCC unit 22.

The IOP 30 is an input / output processor that is in charge of input / output link control, and performs message data handling for analyzing and managing messages input and output through the input / output link, and state management for each input / output link. And Input Output Process Management, which performs I / O control functions, Disk Handling, which performs file management functions for hard disks in a PC, and creation of system data and system software. It is composed of Data Generation which performs matching function and Data Extraction which performs the function of extracting the station data from the system package in operation. Register).

The call waiting service method of the private exchange according to the present invention configured as described above has been described, and FIG. 2 describes a detailed detailed flowchart of the present invention for the call waiting service method of the private exchange.

First, there are first, second, and third subscribers. For example, the first subscriber is an outgoing subscriber registered with call waiting service, the second subscriber is a general incoming subscriber, and the third subscriber is another general outgoing subscription. Explain under the assumption of growing up.

The call waiting service is registered with the SDH unit 26 for the first subscriber using the MMC connected to the IOP unit 30 (step 200).

The call waiting service receives a hook off signal and a digit signal for a special code from a registered first subscriber (step 201).

If the processor determines whether the dialed special code is registered in the SCC unit 22 in the MP 20, and if the special code is not registered, an error tone is sent to the first subscriber (step 203).

If a special code is registered in the SCC unit 22 in the determination step, a confirmation sound is sent to the first subscriber (step 204).

When receiving a pulse signal generated by dialing the digit number for the directory number for the second subscriber from the first subscriber (step 205), the first and second subscribers are connected and placed in a busy state (step 206).

When receiving a pulse signal generated by dialing the digit number for the directory number for the first subscriber from the third subscriber (step 207), the first subscriber is registered with the call waiting service, and therefore, a call waiting tone is emitted every 5 seconds. (Step 208), the third subscriber sends a ring back tone (step 209).

At this time, when the first and second subscribers in the call are in the dormant state, the call is requested immediately and normal call processing is performed.

If a busy signal is transmitted from the first subscriber without a response, it automatically disappears after 90 seconds, and an error tone is sent to the third subscriber (step 210).

If the first subscriber requests a call waiting and then hooks up first, the call waiting service of the third subscriber waiting for the call is destroyed, and the call waiting sound supplied to the first subscriber in the call is not supplied. .

The first and third subscribers are in a busy state together with a hook flash signal from the first subscriber (step 211), and a pending sound is sent to the second subscriber and placed in the held state (step 212).

When the hook flush signal is transmitted from the first subscriber again, the first and second subscribers are in a busy state (step 213), and a hold tone is sent to the third subscriber and placed in a held state (step 214).

Since the hook-on signal is received from the first subscriber, the call waiting service is terminated (step 215).

On the other hand, the procedure of canceling the call waiting service is to cancel the call waiting service by using a special code while the subscriber is hooking off and receiving a dial tone.

Here, if the call waiting service is canceled, a confirmation tone is heard, and if the call waiting service is not canceled, an error tone is received.

In conclusion, after registering the call waiting service, if the calling subscriber registered with the call waiting service activates the call waiting service using a special code, and the call waiting service is received from any originating subscriber during the call with the general called party, the call waiting service is activated. When the call waiting service registers the call waiting service, the calling party hears the holding tone and any call receiving subscriber receives the ringback tone. At this time, the call waiting service is switched by the hook flash signal of the calling subscriber registered with the call waiting service. It is a special service that can make a call with any subscriber and originating subscriber registered call waiting service.

As described above, the present invention as described above inputs a special code for the call waiting service, when the calling party and the called party are busy, when a call is received from another calling party, the call waits with a ring back tone. Then, the call is switched by the hook flush signal of the calling party having the special code inputted, and the call is connected between another calling subscriber that is waiting for the call and the calling party having the special code entered to make a call.

Claims (1)

A call waiting service method of a private exchange having an originating / receiving subscriber and an arbitrary originating subscriber, After the call waiting service registers with the calling subscriber, receiving a hook off signal and a digit signal for a special code from the calling subscriber; Transmitting the error tone to the calling subscriber, wherein the special code is not registered; If the special code is registered, transmitting a confirmation tone to the calling subscriber; When the calling / receiving subscriber is connected and the call connection request is transmitted from any originating subscriber in a busy state, sending a ring tone to the originating subscriber and transmitting a ring back tone to the originating subscriber. ; If a continuous busy signal is transmitted from the originating / receiving subscriber, the ring back tone is automatically extinguished after 90 seconds by any originating subscriber waiting for a call and transmitting an error tone to the originating subscriber; The calling subscriber and the calling party are in a busy state together with a hook flush signal from the calling party, and a pending tone is sent to the called party and placed in a held state; When the hook flush signal is transmitted from the calling subscriber again, the calling / calling subscriber is in a busy state, and a pending tone is sent to the calling subscriber and placed in a held state; Receiving a hook-on signal from the calling subscriber, and thus terminating a call waiting service.