KR100255798B1 - Method of displaying a telephone number of analog subscriber in the digital switching system - Google Patents

Abstract

PURPOSE: A method for displaying a caller identification in an electronic exchange system is to prevent an offensive call by detecting a telephone number of an analog subscriber and displaying the detected telephone number on a screen of a digital subscriber's terminal. CONSTITUTION: An ASS-S(access switching subsystem-S) processes a call of an analog subscriber and an ASS-I processes a call of a digital subscriber. An interconnection network subsystem(INS) controls an interface between the ASS-S and the ASS-I. The ASS-S comprises an analog subscriber interface(ASI), an access switching processor(ASP) and a time switch and local data link(TSL). The ASS-I comprises a digital subscriber interface(DSI), an ASP and a TSL. The INS comprises a space switch(SSW). IF a call connection between the analog subscriber and the digital subscriber is attempted, a telephone number of the analog subscriber as a calling party is detected. It is checked whether or not a function of displaying a caller identification is set up in a terminal of the digital subscriber as a called party. If the function of displaying the caller identification is set up, the detected telephone number of the analog subscriber is displayed on a screen of the digital subscriber's terminal.

Description

Method of displaying a telephone number of analog subscriber in the digital switching system

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for displaying a calling party's telephone number of an electronic switchboard, and more particularly to a method for displaying a calling party's analog subscriber's telephone number on a terminal of a called digital subscriber in accordance with a called party's request.

In general, electronic switchboards are equipped with packet switching functions and comprehensive information to provide a wider range of voice and non-voice information communication services through matching not only telephones but also video phones, video tex, facsimile, telex, computers, televisions and various private switching networks. ISDN (Integrated Services Digital Network) is being developed to accommodate advanced network functions such as subscriber access functions, value-added service functions, and mobile communication exchange functions.

FIG. 1 is a hardware structure diagram of a general electronic switch, and is composed of three subsystems of a central control subsystem (CCS), an interconnection network subsystem (INS), and an access switching subsystem (ASS).

The CCS is a sub-system for overall operational preservation, and is in charge of system operation, test and measurement, statistics and mass storage management, various input / output device control, and data channel connection with other systems.

Since the ASS performs most call processing functions and self-operating maintenance functions, the ASS has a horizontally distributed structure, and up to 63 ASSs can be connected to the INS. The transmission medium with the INS is an optical fiber link and is also called a data link. In addition, an ISDN digital subscriber interface, an SS No. 7 signaling device, a packet processor function, and a network interworking device function are provided to enable the exchange function in the ISDN.

In addition, the ASS is functionally present as one, but in the application stage, ASS-S (analog subscriber), ASS-I (digital subscriber), ASS-T (trunk), ASS-7 (trunk No. 7), ASS-P (packet ), And the combination of the various forms with the four forms mentioned above.

The INS is located at the center of the system and performs a function of connecting ASS to each other or between ASS and CCS. The switch network has a T-S-T switch structure, in which the space switch S is located at INS and the time switch T is located at ASS. Among the call processing functions, it performs centralized functions such as number translation, route control function, and space switch connection, and is also in charge of generating and distributing system clock with network synchronizer.

In addition, the ASS-S processes a call of a domestic analog subscriber input / output through an analog subscriber line, the ASS-I processes a call of a domestic digital subscriber input / output through a digital subscriber line, and the INS is an ASS- Interconnect S and ASS-I with links or ASS-S and ASS-I with CCS.

On the other hand, the all-electronic exchange configured and operated as described above supports all call connections between analog subscribers, digital subscribers or between analog subscribers and digital subscribers, among which digital subscriber terminals (hereinafter referred to as ISDN). Various caller information (caller's digital subscriber's telephone number, etc.) are displayed on the LED (Light Emitting Diode) of the telephone.

In addition, the function of displaying the information of the calling digital subscriber on the LED of the called ISDN telephone by sending the information on the D channel of the 2B + D signals transmitted by the calling digital subscriber to the switchboard is as described above. It was easy to implement.

However, because the analog subscriber has no channel to carry his information, when the analog subscriber attempts to connect to the digital subscriber, the calling party's telephone number is not displayed on the LED of the ISDN telephone of the called digital subscriber. Did. Therefore, it is difficult for the called party digital subscriber to check the calling number (calling party number) when the calling party is an analog subscriber.

As described above, when it becomes difficult to verify the calling party's telephone number, there is a problem in that subscribers suffer a great inconvenience because they may be damaged by malicious badness, which has become a major social problem in recent years.

The present invention has been made to solve the above problems, when the analog subscriber attempts to make a call with any digital subscriber, the electronic switching unit detects the telephone number of the calling analog subscriber by itself and the terminal of the called digital subscriber. The purpose of the present invention is to provide an analog subscriber calling number display method of an electronic switchboard that can prevent various problems (such as damage caused by malicious calls) that can be caused when the calling party number cannot be identified by displaying the calling party number detected on the screen. have.

In order to achieve the above object, an analog subscriber caller ID display method of an electronic switch according to the present invention comprises a first step of detecting a telephone number of an analog subscriber of a calling party when an analog subscriber attempts to connect a call with a digital subscriber; A second step of determining whether the calling party number display function is set in the called party digital subscriber terminal; and if the calling party number display function is set in the called party terminal as a result of the determination of the second step, the called party digital subscriber station And a third step of displaying the telephone number of the calling analog subscriber detected in the first step on the screen.

1 is a structural diagram of a general electrical exchanger,

2 is a block diagram showing a simplified internal configuration of ASS-S, ASS-I, and INS of the all-electronic exchanger to which the present invention is applied;

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a block diagram illustrating a simplified internal configuration of ASS-S, ASS-I, and INS to which the present invention is applied. The ASS-S includes an analog subscriber interface (ASI), an access switching processor (ASP), and a TSL ( Time Switch & Local Data Link (DAS) is provided, ASS-I is equipped with Digital Subscriber Interface (DSI), ASP, and TSL, and INS is provided with Space Switch (SSW).

In addition, an analog subscriber telephone is connected to the ASI of the ASS-S, and an ISDN phone (I-Phone) is connected to the DSI of the ASS-I through a network terminating equipment (NTE).

The ASI of the ASS-S performs an interface function with an analog general subscriber, a public telephone subscriber, a private automatic branch exchange (PABX) subscriber, a party line subscriber, and a remote meter reader.

The DSI block of the ASS-I separates B and D channels from 2B + D signals and data received from subscribers, transmits the B channel to the TSL, and the D channel processes the information to transmit error-free signal information to the ISAP block ( Block to attach a ring to the digital subscriber station (not shown). It also performs a digital subscriber (ISDN subscriber) line termination function.

The ASP of the ASS-S and the ASS-I performs traffic control, SS No. 7 maintenance, corresponding ASS maintenance and operation management, and other services.

The TSL of the ASS-S and the ASS-I performs a function of exchanging time slots input and output from the ASI, the DSI, and the data link. It also controls and manages data links such as multiplexing and demultiplexing of PCM data, and insertion and extraction of interprocessor channel (IPC) messages. That is, it performs data error detection, clock extraction function, E / O and O / E conversion function.

The SSW of the INS performs a function of spatially switching time slot data input through the data link and retransmitting the data to the data link.

A process of displaying the calling party number of the analog subscriber on the terminal of the digital subscriber by the ASS-S, ASS-I, and INS of the all-electronic exchange configured as described above is as follows.

First, when an analog subscriber dials a telephone number of a called digital subscriber in order to make a call with an arbitrary digital subscriber, the ASI of the ASS-S digitizes the telephone number input as an analog signal and sends it to the ASP. It sends SSW connection request signal between calling analog subscriber and called digital subscriber to INS through IPC.

At this time, the ASP of the ASS-S detects the telephone number of the calling analog subscriber and transmits the calling number of the calling analog subscriber detected by the SSW connection request signal to the INS, and the INS sends the calling number (calling side). When the SSW connection request signal containing the telephone number is received, the called party's telephone number is translated, and the calling party's telephone number is extracted and sent to the ASP of ASS-I.

When the ASP of the ASS-I receives the called party's telephone number and the calling party's telephone number, it uses the called party's telephone number to occupy the digital subscriber line that is required to be connected by the analog subscriber. Control your own ISDN Phone (I-Phone) so that the ISDN Phone (i-Phone) sends out the ring itself (typically in the case of analog subscribers the ring is attached by the exchange, but in the case of digital subscribers the ISDN phone directly Will be sent).

At the same time, the ASP of ASS-I determines whether the calling party number display function is set in the ISDN telephone (I-Phone) of the called party's digital subscriber. The calling party number is transmitted to the ISDN phone (I-Phone) of the called party's digital subscriber so that the calling number is displayed on the LED of the ISDN phone (I-Phone).

Thereafter, when the called digital subscriber hooks off an ISDN phone (I-Phone) that is ringing, the call is connected between the calling analog subscriber and the called digital subscriber, thereby enabling telephone conversation.

As described above, when the analog subscriber attempts to make a call connection with the digital subscriber, the telephone exchange switch detects the telephone number of the calling analog subscriber on the called terminal according to whether the calling party number display function of the called digital subscriber terminal is set. Since the calling party is an analog subscriber, the called party's digital subscriber can easily check the calling number, which can provide various benefits (preventing damage from malicious calls and rejecting unwanted phone calls).

Claims (1)

A first step of detecting a telephone number of the calling analog subscriber when the analog subscriber attempts to connect to the digital subscriber; A second step of determining whether the calling party number display function is set in the called party digital subscriber terminal; And a third step of displaying the telephone number of the calling analog subscriber detected in the first step on the called party digital subscriber terminal if the calling party number display function is set in the called terminal. Analog subscriber calling number display method of the electronic switchgear, characterized in that.

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