KR100210791B1 - Method for matching line signals in full electronic switching system - Google Patents

Abstract

The present invention relates to a line signal matching method of an all-electronic exchange suitable for matching line signals of various countries in a line processor (LP) of the DTS-1100A all-electronic exchange. By embedding algorithms within the system to accommodate signals from different countries, production and management, new additions for specific countries, and compatibility with other countries are facilitated.

Description

Line Signal Matching Method of Electronic Switching System

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a line signal matching method of an all-electronic exchange, and more particularly, to a line signal of an all-electronic exchange in a line processor (LP) of a DTS-1100A all-electronic exchange. It is about a matching method.

In this regard, the DTS-1100A (DTS-1100 improved) electronic exchanger will be described as follows.

DTS-1100 Enhanced Switchboard is an international standard electronic switch that is used for local, local / Tandem and CENTREX of PSTN (Public Switched Telephone Network) and ultimately ISDN It has been developed to be a flexible exchanger in various network types such as intelligent network (IN).

The DTS-1100 is an advanced system developed by applying the latest technologies in the fields of computer, semiconductor, communication, and software. It is suitable for all applications in terms of external size, performance, service flexibility, and adaptability to network environment.

The DTS-1100 advanced system is one of the existing commercialized and commercialized services such as voice (Local / Tandem), CENTREX, ISDN (2B + D, 30B + D), and common line signaling (CCS NO.7). It has been developed to play a major role in a comprehensive information communication network that can be accommodated by all systems.

The main design concept of the DTS-1100 retrofit is an open architecture that provides flexibility and modularity to make it easier to expand and modify the system and to improve the system as technology advances. Adopted.

In other words, the system structure is designed to minimize the impact of technological development, and is designed in consideration of economics to provide advanced services to subscribers at a more economical price.

The main considerations in the design of the DTS-1100 advanced system are as follows.

* Simplify hardware by maximizing modularity

* Realization of economical efficiency by maximizing hardware usage efficiency

* Economic feasibility by maximizing software processing function

* Increased system configuration flexibility through subsystem combination

* Maximization of operation and maintenance by simplifying hardware

* High performance and high reliability

* Enhanced software implementation and maintenance

* Easy to add new features

The DTS-1100 retrofit is available in a variety of packages.

The DTS-1100 is a system that can accommodate up to 8,192 subscribers and 1,080 trunk lines, and has a distributed control concept that can handle 1,200 Erlang traffic and 150,000 Busy Hour Call Attempts (BHCA). The capacity is extended by 1500 lines.

Concentration ratios can be 4: 1 or 8: 1.

Distributed control structure:

The DTS-1100 variant adopts a dual processor architecture with general purpose 32-bit and 16-bit microprocessors to increase modularity and improve reliability.

The control function is implemented in a control layer structure of two levels of the upper processor and the lower processor.

The upper processor, called the Main Processor (MP), performs higher functional tasks such as call processing, number translation, exchange control, multi-frequency signal processing, system maintenance and operation, and the peripheral processor (PP). The subprocessor, called Peripheral Processor, performs tasks that require real-time processing of the lower layers, such as path detection, analysis, and line signal processing.

Function Distribution is performed by distributing various functions to the processors, and the PP and call processing processors adopt a load distribution method for easy addition as the system is expanded.

Operating system:

The operating system of the DTS-1100 advanced system basically carries out process management by FIFO (First In First Out), and requires interrupt processing and real-time processing to perform urgent processing according to the case. The Real Time Clock is operated to perform the function.

In addition, interprocessor communication processing is performed, and control system redundancy processing is performed.

Programming language:

The DTS-1100 variant adopts the C language for software programming, and the Assemble language for hardware matching that requires real-time.

Redundancy:

In order to increase system reliability, all the major parts of the DTS-1100 retrofit, namely the main processor (MP), peripheral processor (PP), etc., are all duplicated.

Unlike the case where the exchange was developed and used for a specific purpose, the DTS-1100 retrofit was considered for its development and flexibility to provide a wider range of applications and various functions from the time of design.

Application in PSTN:

The DTS-1100 retrofit provides a stream / relay exchange function.

It provides a Remote Access Switch Module (RASM) that can accommodate 480 subscribers for remote subscribers.

Application in Private Network:

The DTS-1100 variant offers a Centrix feature.

The Centrix function combines a part of subscribers into a separate private group to receive the same service as having a separate private exchange within the same group, and enables a separate private network including a guide.

One DTS-1100 retrofit can be configured for up to 32 Centrix groups and provides access to 64 guides.

Within the same group, functions such as proxy answering and call transfer can be provided.

Application in CCS No.7 Signaling Network:

The DTS-1100 improved type accommodates a common line signaling device to perform the function of a signaling point (SP).

Functionally, it has a SEP function.

Application in ISDN:

DTS-1100 improved type is developed with the goal of providing various voice and non-voice services by matching with various information communication devices as well as interworking with heterogeneous communication networks.

Therefore, in the future, the development of the application sector is accelerated to be suitable for the integrated information communication network (ISDN), which provides high-level information and communication services, so that SS (Signalling System) No.7 common line signaling method, ISDN subscriber access function, operator service, It will accommodate advanced network functions such as centralized operation and maintenance and value-added services.

In the past, the exchanges were classified into public switching systems, private switching systems, and mobile switching systems, depending on the network.

The DTS-1100 retrofit system will evolve into a system that can perform all of these exchange functions.

SUMMARY OF THE INVENTION An object of the present invention is to provide a line signal matching method of an all-electronic exchange that can mount a algorithm in one line processor to accommodate signals of various countries, thereby increasing the competitiveness of the product.

In order to achieve the above object, the present invention has a line signal value used in various countries and a time value used for operation, and receives a country code from a higher level at the beginning of a corresponding program, and then obtains corresponding data. After changing the value for the country, it is characterized by performing the actual service for the country.

1 is a schematic structural diagram of a DTS-1100A all-electronic exchange for explaining the line signal matching method of the all-electronic exchange according to the present invention.

2 is a flowchart showing step by step an embodiment of a line signal matching method of an all-electronic exchange according to the present invention;

* Explanation of symbols for main parts of the drawings

10: DTS-1100A electronic switchboard 20: main processor

30,40,50: 1st, 2nd, 6th line processor

60: relay line

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 schematic structural diagram of a DTS-1100A all-electronic exchange 10 for explaining a line signal matching method of an all-electronic exchange according to the present invention. Main processor (MP) 20 which performs subscriber and relay call processing and performs maintenance functions for system status management, and monitors the status of each line and reports to the main processor 20 described above. The first, second, and sixth line processors 30, 40, and 50 control each line by receiving a control command from the main processor 20.

In this case, the first line processor 30 described above is connected to another exchanger through the relay line 60.

Referring to Figure 2 the present invention made as described above is as follows.

First, the main processor 20 may include a Subscriber Call Control (SCC), Special Service Control (SCS), Centrex (CTX), Call Register Handling (CRH), Digital Subscriber Call Control (DCC), Attentant Call Control (ACC), and DSC. (Digital Supplementary Service Control), Trunk Call Control (TCC), Trunk Data Handling (TDH), MP Operating System (MOS), System Start_Up (SSU), Processor Status Management (PSM), System Clock Management (SCM), SC ( Signaling Control, Subscriber Data Handling (SDH), Trunk Data Control (TDC), Time Switch (TSW), Number Translation (NTR), In Test Line (ITL), Out Test Line (OTL), Digital Subscriber Test (DST) , Test Command Management (TCM), Fault Management (LFM), Alarm Handling (ALH), Device Status Management (DSM), Call Trace (CTR), Data Handling (DTH), Memory Handling (MH), Charging (CHA), It consists of software blocks such as STA (Statistics), Man Machine Command (MMC), Telephony User Part Control (TUC), ISDN User Part Control (UCU), and User Part Interface (UCI). It performs maintenance function for system status management.

Next, each of the first, second, and sixth line processors 30, 40, and 50 includes software blocks such as Trunk and Analog Line Control (LC), ISDN Line Control (ILC), and POS (Periperal Operating System). The state of the line is monitored and reported to the main processor 20 described above, and each line is controlled by receiving a control command from the main processor 20.

In this case, each of the software blocks of the main processor 20 and the first, second, and sixth line processors 30, 40, and 50 described above and detailed description thereof will be omitted.

Figure 2 is a flow chart showing step by step an embodiment of a line signal matching method of an all-electronic exchange according to the present invention.

First, the first line processor 30 sends a country code transmission request signal to the main processor 20 and waits for a response while maintaining a standby state (110, 120).

Next, when the country code is received from the main processor 20, the first line processor 30 first updates a table for processing the received signal according to the corresponding country code, and then transmits a line signal value. And the values of the time variable are updated according to the corresponding country code (130, 140, 150).

Subsequently, since the first line processor 30 has data modified according to the corresponding country code, the first line processor 30 has the same data as the relay line signal processing procedure regardless of the country. The service can be implemented according to the country (160).

Of course, the second and sixth line processors 40 and 50, which are other line processors besides the first line processor 30, may also execute the same program as the functions of the first line processor 30 described above.

As described above, the present invention is equipped with an algorithm in the first line processor 30 to accommodate signals of various countries, thereby facilitating production and management, new additions for specific countries, and compatibility with other countries. It works.

In other words, in order to apply a signal of another country, the line signal table may be upgraded with data according to a corresponding country code.

Claims (1)

The main processor 20 which performs subscriber and relay call processing and performs maintenance functions for system state management, and monitors the status of each line to report to the main processor 20 and controls the main processor 20. In an all-electronic exchanger including first, second, and sixth line processors (30, 40, 50) for receiving a command and controlling each line, the first line processor (30) is the main processor (20). After the first step (110,120) and the first step (110,120) performing the first step (110,120) and waiting for a response while sending a country code transmission request signal to maintain the standby state, the first line processor 30 is the main processor 20 Receiving a country code from the first step of updating the table for processing the received signal according to the country code, and then updating the values of the outgoing line signal value and time variable for the country code After performing the steps 130, 140 and 150 and the second steps 130, 140 and 150, since the first line processor 30 has the data modified for the corresponding country code, the relay line signal is processed regardless of the country. A line signal matching method of an all-electronic exchange, which is performed in the same manner as the procedure to sequentially perform the third step (160) of providing a service suitable for a corresponding country.