KR19990020643A - Extension Subscriber Call Transfer Service of Electronic Switching System - Google Patents

Abstract

The present invention relates to an extension subscriber call transfer service method of an electronic switchgear, and if a subscriber wants to call another general subscriber that he / she wants from a general subscriber during a call between a subscriber who can register and delete a call transfer service and a general subscriber, The subscriber who can register and delete the switching service can call the desired subscribers by activating the call transfer service by hitting the hook flash of the terminal and dialing the directory number of the desired general subscriber. It is convenient.

Description

Extension Subscriber Call Transfer Service of Electronic Switching System

The present invention relates to a Full Electronic Telephone eXchange, and in particular, in a DTS-1100A small-capacity exchanger, a Center Subscriber registered with a Call Transfer service function is busy with an external call. The present invention relates to an extension subscriber call transfer service method of an electronic switch that enables a user to transfer a call to another extension subscriber.

In general, the DTS-1100A small-capacity exchanger is an international standard electronic switch, which is used for local, local / Tandem in the public switched telephone network (PSTN), and ultimately a comprehensive information network, It was developed to be developed as a flexible exchanger in various network types such as an intelligent network, and is suitable for all applications in terms of external size, performance, service flexibility, and adaptability to network environment.

The call transfer service of the conventional electronic switchboard cannot transfer a call to another extension subscriber while connected to an external call or an internal call, and if the call is connected, but the call is incorrectly received, the caller does not need to call again. There is a problem in that there is no way for a subscriber to switch a call directly.

The present invention has been made to solve such a problem, the purpose of which is that the extension subscriber registered call transfer service can transfer the call directly to another extension subscriber while the call is connected to the external call or internal call, In the case of an incorrectly dialed telephone, an extension subscriber call switching service method of an electronic switchgear is provided so that a call can be conveniently connected by a caller's extension subscriber without having to make a call again.

The present invention for achieving the above object relates to an extension subscriber call transfer service method of the electronic switchboard, the subscriber and the general subscriber C registered call transfer service is busy; The general subscriber C on the call wants to talk to the general subscriber B, so that the call transfer service is notified to the registered subscriber of the call transfer service; Receiving a hook flash signal from a subscriber whose call transfer service is registered; When the hook flash signal is received, sending a hold tone to the general subscriber C, and sending a special dial tone to the subscriber whose call transfer service is registered; Receiving a directory number dialing signal for general subscriber B from a subscriber to whom call transfer service is registered, and transmitting a ring tone; Receiving a hook flash signal from a subscriber whose call transfer service is registered; Receiving a hook flash signal and truncating a ringtone for a regular subscriber B; The ringtone for the general subscriber B is cut off, so that the subscriber having the call transfer service registered and the general subscriber C re-call; Transmitting a ring back tone to general subscriber C and transmitting the ring tone to general subscriber B when the subscriber registered with the call transfer service does not enter a hook flash and hooks up the handset; When the general subscriber B responds, the general subscriber C and the general subscriber B call; If the subscriber having registered call transfer service does not enter a hook flash and does not hook on the handset, the general subscriber B responds; Receiving a response signal from the general subscriber B, calling the general subscriber B with the subscriber to which the call transfer service is registered; When the call transfer service receives the hook-on signal from the registered subscriber, the general subscriber C and the general subscriber B call.

1 is a block diagram of an extension subscriber call switching service method of an electronic switching system according to the present invention;

2 is a flowchart of the present invention for inputting an extension subscriber call transfer service registration code of an electronic switchboard;

3 is a flowchart of the present invention for canceling the extension subscriber call transfer service registration code of the electronic switchboard;

4 is a detailed flowchart of the present invention for the extension subscriber call transfer service function of the electronic switching center.

Explanation of symbols for main parts of the drawings

10: LCS 20: Main Processor

21: CLS 22: SLS

23: TLS 24: CDH

25: NTR 30: 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 an extension subscriber call switching service method of an electronic switching system according to the present invention, a line control subsystem 10 (hereinafter abbreviated as LCS) 10, and a main processor (main processor): FIG. Hereinafter, abbreviated as MP 20, an extension subscriber line subsystem (hereinafter abbreviated as CLS) 21, and a subscriber line subsystem (hereinafter abbreviated as SLS). 22, a trunk line subsystem (hereinafter abbreviated as TLS) 23, an extension data processing (hereinafter abbreviated as CDH) 24, and a number translation ( Number Translation (hereinafter abbreviated as NTR) 25 and an Input Output Processor (hereinafter referred to as IOP) 30.

The LCS 10 is included in a line processor, and detects a Hook Off / Hook On signal from an extension subscriber (not shown) and transmits the corresponding digit pulse signal to the CLS in the MP 20. And a lower processor for transmitting to the NTR 25 via the SLS 22 and the TLS 23.

The MP 20 includes the CLS 21, the SLS 22, the TLS 23, the CDH 24, the NTR 25, and is connected to the LCS 10 in the line processor. It is an upper processor that performs relay call processing with a subscriber and performs a maintenance function for managing status of various data transmitted from an extension subscriber.

The NTR 25 receiving the digit pulse is a number translation block, which analyzes the telephone number information of the station number in a specific region according to the allowance of the external call transmitted from any subscriber, and checks the purpose and destination of the call. From the device number and dial digit information of the line or the trunk line, the final destination is determined from the subscriber line or the trunk line by the translation of the extension number and the called party number, and the purpose and destination of the extension number information are checked. The CLS 21, the SLS 22, the TLS 23, and the LCS 10 in the lower processor transmit the incoming request result to the extension subscriber.

The IOP 30 is an I / O processor for controlling I / O ports, and includes message data handling for analyzing and managing messages input and output through I / O ports, and state management for each I / O port. Input Output Process Management, which performs I / O control functions, Disk Handling, which performs file management functions for hard disks in IOP PCs, and creation and system software for system data. It is composed of Data Generation which performs matching function with Data Generation and Data Extraction which extracts station data from a running system package and is connected to the main processor. Call transfer using Man Marchine Communication (hereinafter abbreviated as MMC) After registering the service with the CDH 24 in the electronic switchboard, when the registered extension subscriber wants to continue talking with the other person while the calling party is making an external or internal call connection, the calling party can make the call efficiently. It can be converted.

The block diagram of the extension subscriber call switching service method of the electronic switchboard according to the present invention configured as described above has been described. FIG. 2 is a flowchart of the present invention for inputting the extension subscriber call switching service registration code of the electronic switchboard. Explain.

The IOP 30 is interfaced with an MMC, not shown, and requests a subscriber to register a call transfer service using the MMC's keyboard to register a call transfer service.

The registration code for the call transfer service to the MMC is inputted to the CDH 24 in the MP 20 by the call transfer service registration request using the MMC's keyboard. Thus, a call processing procedure can be performed. .

The flowchart of the present invention for inputting the extension subscriber call transfer service registration code of the all-electronic switchboard configured as described above has been described, and FIG. 3 illustrates the flow chart of the present invention for canceling the extension subscriber call transfer service registration code of the all-electronic switchboard. do.

The IOP 30, which is interfaced with the MMC, requests 300 a corresponding subscriber who wants to cancel the call transfer service to cancel the call transfer service by using the MMC's keyboard.

The call transfer service cancellation code is inputted to the MMC to the CDH 24 in the MP 20 by the call transfer service cancellation request using the MMC's keyboard. Thus, general call processing can be performed.

The flowchart of the present invention for canceling the extension subscriber call transfer service registration code of the all-electronic switching system configured as described above has been described, and FIG. 4 describes the detailed flow chart of the present invention for the extension subscriber call switching service function of the all-electronic switching center. .

An embodiment will be described on the assumption that there is a subscriber A to which a call transfer service (centreX transFer service (hereinafter abbreviated as XFA)) is registered and general subscribers B and C to which XFA is not registered.

First, while the subscriber A and the subscriber C registered with the XFA are busy (400), the subscriber C notifies the subscriber A registered with the XFA that he / she wants to talk to the subscriber B (401).

Subscriber A registered with XFA hits the hook flash using the terminal (402).

When the hook flash signal is transmitted, the hold tone is transmitted to the general subscriber C, and the XFA sends a special dial tone to the registered subscriber A. (403)

Since the subscriber A registered with XFA dials the directory number of the general subscriber B, the dialing signal is transmitted 404 to the general subscriber B through the LCS 10 and the MP 20, and the ring tone according to the dialing signal is also transmitted. (405)

When the ringtone is sent to the general subscriber B, and the subscriber A registered with the XFA enters the hook flash (406), the general subscriber B is disconnected (407), so that the general subscriber C is reconnected with the call. )

On the contrary, if the subscriber A registered with XFA does not input the hook flash, it is determined whether the receiver / hook has been hooked on (409).

When hooking the handset at the decision step 409, a ring back tone is transmitted 410 to general subscriber C, a ring tone is transmitted 411 to general subscriber B, and when general subscriber B responds, General subscribers C and B are connected by a call and enter into a call state (416).

If the subscriber does not hook on the handset in the determination step 409, when the general subscriber B answers (413), and the subscriber A and the general subscriber B registered with XFA are connected to a call and become in a busy state, ( 414) A subscriber A who has registered XFA is hooked on, and general subscribers C and B are connected to a call and enter into a call state.

In conclusion, if a subscriber who is able to register and delete call transfer service at an electronic switchboard and wants to call another general subscriber from the regular subscriber during a call between subscribers, the subscriber who can register and delete call transfer service is Although the present invention is the same as the call transfer service serviced by a private exchange, the call switching service is activated in a private exchange by activating a call transfer service by hitting a hook flash of a terminal and dialing a directory number of a desired general subscriber. The divert service can be registered and deleted by using the MMC in order to activate the operator arbitrarily, so that the divert service can be used at any time.

As described above, in the present invention described above, a subscriber who is able to register and delete a call switching service function among any extension subscribers in an electronic switchboard is a subscriber who is another subscriber during a call with a general subscriber of any external or internal call. If the call transfer service is registered, the subscriber who is registered with the transfer service hits the hook flash, and the call transfer service is activated quickly by dialing the desired directory number so that the call transfer process can be made easily. It is convenient.

Claims (3)

In the subscriber subscriber call registration service method comprising a subscriber that can register and cancel call transfer services, general subscribers B and C, and a main processor, The subscriber in which the call transfer service is registered and the general subscriber C are in a call; The general subscriber C in the call wants to talk to the general subscriber B, so as to notify the registered subscriber of the call transfer service of the call transfer service; Receiving a hook flash signal from a subscriber registered with the call transfer service; When the hook flash signal is received, transmitting a hold tone to the general subscriber C and transmitting a special dial tone to the subscriber to which the call transfer service is registered; Receiving a directory number dialing signal for the general subscriber B from a subscriber in which the call transfer service is registered, and transmitting a ring tone; Receiving a hook flash signal from a subscriber registered with the call transfer service; Receiving the hook flash signal and truncating a ringtone for the general subscriber B; The ringtone for the general subscriber B is truncated, so that the general subscriber C re-calls the subscriber to which the call transfer service is registered; Transmitting a ring back tone to general subscriber C and transmitting a ring tone to general subscriber B when the subscriber registered with the call transfer service does not input a hook flash and hooks on a handset; When the general subscriber B responds, the general subscriber C and the general subscriber B call; When the subscriber registered with the call transfer service does not enter a hook flash and does not hook on a handset, the general subscriber B responds; In response to receiving the response signal from the general subscriber B, the general subscriber B talking to the subscriber registered with the call transfer service; And when the call transfer service receives the hook-on signal from the registered subscriber, the general subscriber C and the general subscriber B call. The method of claim 1, And a call transfer service registration code is input into the main processor for the corresponding subscriber using the keyboard of a man machine communication according to the call transfer registration service. The method of claim 1, And a call transfer service cancellation code is input into the main processor for the corresponding subscriber using the keyboard of a man machine communication according to the call transfer cancellation service.