KR100242700B1 - Method for advanced redial service in dpx - Google Patents

Abstract

The present invention relates to an advanced redial service method of a private exchange, and after registering a redial service with a private exchange, if the called subscriber is busy (missing), the calling subscriber hears a busy tone (ringback tone), and the terminal When you want to hook / turn on the receiver / caller and talk to the called party again, the phone number of the called party is automatically redialed after a certain time (5 seconds or more) by hooking / off the handset / handset of the terminal. Since the subscriber and the called party include the step of normal call processing, there is no need for a separate key input, and the inconvenience of having to remember a special code by redialing can be overcome.

Description

Advanced redial service method of private exchange

The present invention relates to a private exchange (Private eXchange), in particular, the hook / on the handset of the terminal without pressing a dial key, and then the hook / off again advances the private exchange to enable the redial (Redial) service Redial service method.

In general, the redial service function does not press a number key by hooking / turning the handset on the calling party when the called party is busy or absent, and then hooking / off the handset again after a certain time. When the redial key is pressed, the last phone number entered in the terminal is automatically pressed.

In addition, another type of redial service is a function in which a subscriber redials a redial service with an exchange, and then redials the number last entered into the exchange using a registered special code.

In the conventional redial service method of a private exchange, a special code is inputted to the exchange, which is an input output processor (hereinafter referred to as an IOP) and a man & machine communication (Man & Marchine Communication). The redial service is registered using subscriber data handling (hereinafter abbreviated as SDH) in the electronic switchboard using MMC.

After registering the redial service with SDH, the calling party dials the called party to access the call. If the called party is busy with another called party, the calling party hears Busy Tone and calls. To exit.

After a certain time, the calling subscriber redials using a special code to the called subscriber who was busy again.

The redial method for the called subscriber can use a special code registered in the exchange by using the MMC in the IOP in advance.

In one embodiment, any calling party has made a call with a called party with extension number 5000 and terminated the call. In addition, any caller may dial the last number redial special code ** to call a caller with the extension number 5000, which was previously called.

However, redialing with the last number redial special code ** as described above, the problem of redialing only when the last number redial special code ** is entered, and the special code must always be remembered before dialing There was this.

The present invention has been made in order to solve the above problems, the purpose is that the calling subscriber dialed to the called subscriber, when the busy subscriber is continuously listening to the busy tone (ringback tone), the calling subscriber is called / Advanced redial service method of a private exchange that hooks and turns off the handset and then hooks and turns off the handset and the receiver does not redial again with a special code and automatically re-calls with the called party after a certain time. To provide.

The present invention for achieving this object relates to an advanced redial service method of a private exchange, comprising: registering a redial service with a private exchange; If the redial service is registered, if the called subscriber is busy (absent), listening for a busy tone (ringback tone) and hooking / turning on the handset of the terminal; Hooking / turning the handset of the terminal on and off, and then hooking / off the handset of the terminal again to automatically redial the telephone number of the called party after a certain time (more than 5 seconds); The phone number of the called party is redialed so that the calling party and the called party become normal call processing.

1 is a block diagram of an advanced redial service method of a private exchange according to the present invention;

2 is a flowchart of the present invention for an advanced redial service registration method of a private exchange;

3 is a flow chart of the present invention for an advanced redial service method of a private exchange.

* Explanation of symbols for main parts of the drawings

1: terminal 2: LCS

3: pls 4: NTR

5: SDH 6: IOP

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.

1 is a block diagram of a register call service method of an electronic switching system according to the present invention, which includes a terminal 1, a line control subsystem (hereinafter abbreviated as LCS) 2, and a private line. Subsystem (hereinafter referred to as PLS) (3), Number Translation (hereinafter referred to as NTR) (4), SDH (5), and IOP (6). .

The terminal 1 is a telephone owned by an arbitrary subscriber, which is connected to a private exchange, and in particular, is connected to the LCS 2 in the LP, which is a lower processor, and dials the terminal 1 in order for the calling subscriber to dial the called subscriber. An analog pulse signal according to the key input is applied and transmitted to the LCS 2 so that the call can be connected.

The LCS 2 is a line control service system block included in a line processor. The LCS 2 detects a hook off / hook on signal transmitted from the terminal 1 and detects a hook off signal. Then, the analog pulse signal is transmitted to the PLS 3 according to the transmitted dial key input.

The main processor includes a PLS 3, an NTR 4, and an SDH 5, and performs relay call processing with the terminal 1 connected to the LCS 2 in the line processor. It is an upper processor that performs a maintenance function for state management of various data transmitted from 1).

Among them, the PLS 3 is a private line subsystem block, which is connected to the LCS 2 belonging to the line processor to perform local call control with the terminal 1, outgoing call control, and incoming call control. Information generation and statistical data are collected and sent to NTR (4).

Here, the local call control is a series of call control processes in which the calling party using the terminal 1 calls the called party of the own country, and the call generation, the dial tone transmission, the digital transmission, the digital analysis, the call routing, the call signal transmission, Call proceeds in the order of connection and recovery by phone.

Outgoing call control is a series of call control processes in which an outgoing subscriber using the terminal 1 calls a called party of another country, and incoming call control is a subscriber of another country receiving a called party of its own country through the incoming line of its own country. It is a series of call control processes.

The NTR 4 is a number translation block, which analyzes telephone number information of the called subscriber transmitted from the terminal 1 to confirm the purpose and destination of the called subscriber, and retransmits the data back to the PLS 3.

In addition, NTR (4) determines the final destination to the subscriber line or relay line by extension number and destination number translation from the device number and dial digit information of the line or trunk line to confirm the purpose and destination of the extension number information. After performing the function, the PLS 3 is notified again of the result.

The SDH 5 is a subscriber data handling block. The SDH 5 receives an input for generating, changing, and canceling information about an advanced redial service transmitted from the IOP 6, and then the PLS 3. To NTR (4).

The IOP 6 is an input / output processor that controls input / output ports for matching with an operator (not shown). Message data handling performs an analysis and management function for messages input and output through the input / output port. Input / output process management that performs state management and input / output control functions for each input / output port, and disk handling that performs file management functions for hard disks in an IOP (6) PC; It consists of Data Generation, which generates the station data of the system and matches with the system software, and Data Extraction, which extracts the station data from the system package in operation. Connected to SDH (5) in the main processor, and advanced redialer using MMC connected to IOP (6) The service is registered in the SDH 5.

The advanced redial service registration method of the private exchange according to the present invention configured as described above will be described in more detail with reference to the flowchart shown in FIG.

The MMC connected to the IOP 6 is used to register the advanced redial service at the private exchange, and the advanced redial service is input to the SDH 5 using a software program.

When the advanced redial service is registered in the SDH 5, the calling subscriber hooks / offs the handset of the terminal 1, and then through the LCS 2 using the dial key of the terminal 1 200. Dial the called party. (201)

The LCS 2 detects the dialing pulse signal to the called subscriber and transmits it to the PLS 3 in the main processor.

The PLS 3 receives the hook-off signal and the dialing pulse signal transmitted from the terminal 1 and transmits the dialing pulse signal to the NTR 4 in order to translate the dialing pulse signal.

The NTR 4 translates the extension number for the called party, and then retransmits the translated result to the PLS 3 to determine whether the extension number of the called party is correctly entered.

If the extension number is not correctly input in the determination step 203, a signal for call blocking is transmitted to the terminal 1.

If the extension number to the called subscriber is correctly input in the determination step 203, it is again determined whether the advanced redial service is registered in the memory (not shown).

If the advanced redial service is registered in the re-decision step 204, the telephone number for the called subscriber is stored in a memory (not shown).

If the advanced redial service is not registered in the re-decision step 204, a call request is immediately made to the called subscriber without being stored in the memory (not shown).

The calling subscriber makes a call request to the called subscriber using the private exchange (206).

The calling subscriber listens to the ring back tone according to the call request as the called subscriber.

The calling party and the called party are normally connected and handled. (208)

The advanced redial service method of the private exchange according to the present invention configured as described above will be described in more detail with reference to the flowchart shown in FIG.

As shown in FIG. 2, the calling subscriber hears the ring back tone and the called subscriber hears the ring tone by dialing to the called subscriber with the advanced redial service registered so that the call of the calling subscriber and the called subscriber can be connected.

And when the called party is busy, the calling party hears the busy tone instead of the ring back tone.

When the called party is busy (absent), the calling party hooks up / receives the handset of the terminal 1, and if it wants to call back again with the called party, the advanced redial service inputted to the private exchange is performed. You can use

Advanced redial service, when you want to re-call with the called party after hooking / turning the handset, after hooking / off the handset / handset (300), the timer is automatically started even without dialing (300). After a certain period of time (approximately 5 seconds or more), (302) the advanced redial service registered in the private exchange is activated, so (303) the telephone number is automatically programmed by the program in the memory where the telephone number of the called party is stored. Read (304)

After the number translation is performed for the read recipient's telephone number, the 305 translates the result of the telephone number of the last dialed called subscriber whose number has been translated (306).

In this case, updating the number translation result in the memory is for storing the telephone number once again because it is the telephone number of the last called party.

The phone number of the called party is updated in the memory in the private exchange, and the calling party and the called party can easily make a call by performing normal call processing by the advanced redial service. (307)

As described above, the present invention as described above registers a special code for an advanced redial service, so that when an existing called party is busy or absent, the terminal does not enter a dial key for redial, When you want to re-call with the called party after hook / on the handset, the phone number of the called party is automatically entered after a certain time (about 5 seconds or more) after hooking / off. You can redial only by the handset, which makes the call very convenient.

Claims (1)

In the redial service method of the private exchange having a terminal and caller / incoming subscriber, Registering the redial service with the private exchange; If the redial service is registered, if the called subscriber is busy (missing), listening for a busy tone (ringback tone) and hooking / turning on a handset / handset of the terminal; Hooking / turning the handset on / off of the terminal, hooking / off the handset of the handset again, and automatically redialing the telephone number of the called party after a certain time; Wherein the telephone number of the called party is automatically redialed by a program in the private exchange so that the calling party and the called party become normal call processing. .

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