KR940017422A

KR940017422A - Small capacity switching system for Integrated Information Network (ISDN)

Info

Publication number: KR940017422A
Application number: KR1019920027389A
Authority: KR
Inventors: 이상해
Original assignee: 김주용; 현대전자산업 주식회사
Priority date: 1992-12-31
Filing date: 1992-12-31
Publication date: 1994-07-26
Also published as: KR100265354B1

Abstract

본 발명은 사설 ISDN망 구축을 위한 종합정보통신망용 소용량스위칭 시스템에 관한 것으로, 가입자단을 접속하는 가입자접속부 뿐만 아니라 내부적으로도, 그리도 ISDN국설망과 접속되는 제1차군 인터페이스부도 완전한 표준을 따르도록 하고, 국설 ISDN교환기가 제공하는 모든 서비스를 그대로 단말기에 제공할수 있고, 내선까지의 통신에는 추가적으로 부가·응용서비스의 제공을 가능케하는 종합정보통신망(ISDN)용 소용량 스위칭 시스템을 제공하기 위하여, 다수의 ISDN 가입자를 접속하기 위한 S접속부(10); 다수의 아날로그 가입자를 접속하기 위한 R접속부(20); 상기 S접속부 및 R접속부에 연결되어 있으며, 시스템의 최상위 제어를 수행하는 주제어부(30); 상기 주제어부에 연결되어 있으며, 다수의 국선 인터페이스를 제공하기 위한 U접속부(40); 및 상기 주제어부에 연결되어 있으며, 제1및 제2CEPT회선을 접속하기 위한 1차군 속도(PR1) 접속부(50)로 구성되어, 국설 ISDN 교환기가 제공하는 모든 서비스를 그대로 단말기에 제공할수 있게 하고, 각종 부가·응용서비스의 제공을 가능케 한다.The present invention relates to a small-capacity switching system for an integrated telecommunication network for building a private ISDN network, in which not only the subscriber connection part connecting the subscriber end but also the first group interface part connected internally and also with the ISDN establishment network follow the full standard. In order to provide a small capacity switching system for an integrated information communication network (ISDN) that can provide all services provided by a local ISDN exchange to a terminal as it is, and additionally provide additional and application services to communication to an extension. S connection unit 10 for connecting the ISDN subscriber; An R connector 20 for connecting a plurality of analog subscribers; A main control unit 30 connected to the S connection unit and the R connection unit to perform the highest level control of the system; A U-connecting unit 40 connected to the main control unit for providing a plurality of trunk line interfaces; And a primary speed (PR1) connection unit 50 connected to the main control unit for connecting the first and second CEPT lines, so that all services provided by the national ISDN exchange can be provided to the terminal as it is. It enables the provision of various additional and application services.

Description

Small capacity switching system for Integrated Information Network (ISDN)

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 CCITT에서 규정한 ISDN 사용자-망 인터페이스 기준 구성도, 제2도는 본 발명에 의한 종합정보통신망(ISDN)용 소용량 스위칭 시스템의 개략적인 구성도, 제3도는 본 발명에 의한 제2도의 S접속부의 일실시예에 구성을 나타낸 블럭도, 제4도는 본 발명에 의한 제2도의 R접속부의 일실시예 구성을 나타낸 블럭도, 제5도는 본 발명에 의한 제2도의 주제어부의 일실시예 구성을 나타낸 블럭도, 제6도는 본 발명에 의한 제2도의 U접속부의 일실시예 구성을 나타낸 블럭도, 제7도는 본 발명에 의한 제2도의 PRI 접속부의 일실시예 구성을 나타낸 블럭도.1 is an ISDN user-network interface reference configuration defined by CCITT, FIG. 2 is a schematic configuration diagram of a small capacity switching system for an ISDN according to the present invention, and FIG. 3 is S of FIG. 2 according to the present invention. 4 is a block diagram showing an embodiment configuration of the R connection section of FIG. 2 according to the present invention, and FIG. 5 is an embodiment configuration of the main control section of FIG. 2 according to the present invention. 6 is a block diagram showing an embodiment configuration of the U connection portion of FIG. 2 according to the present invention, and FIG. 7 is a block diagram showing an embodiment configuration of the PRI connection portion of FIG.

Claims

A small capacity switching system for an integrated telecommunication network for building a private integrated telecommunication network (ISDN), comprising: S connection means (10) for connecting a plurality of ISDN subscribers; R connecting means 20 for connecting a plurality of analog subscribers; Main control means (30) connected to the S connection means and the R connection means for performing the highest level control of the system; U connection means (40) connected to the main control means for providing a plurality of trunk line interfaces; And a primary group speed (PRI) connecting means (50) connected to the main control means for connecting the first and second CEPT lines.

The method of claim 1, wherein the S connection means 10 is connected to each of a plurality of ISDN subscriber terminals (subscribers # 0 to # 7), each having a FIFO buffer memory therein. A plurality of S-interface circuits 11a to 11c for storing messages arriving; ROMs 13 and RAMs connected to the plurality of S-interface circuits 11a to 11c by address and data buses; 14); And an 8-bit microprocessor coupled to the address and data bus for reading messages from FIFO buffer memories in the plurality of S inverter face circuits and storing them in the RAM 14 and then clearing the FIFO buffer memory. MPU (12); small-capacity switching system for Integrated Services Digital Network (ISDN), characterized in that it comprises a.

2. A plurality of subscriber line interface circuits (SLICs) 21a to claim 1, wherein the R connection means 20 is connected to each of a plurality of analog subscriber terminals (subscribers # 0 to # 3) to connect each subscriber. 21c); A memory 23 connected to the plurality of subscriber line interface circuits 21a to 21c by an address and data bus; An 8-bit CPU 22 which reads messages received from the plurality of analog subscribers and converts them into ISDN messages; A synchronous data link control (SDLC) circuit (24) connected to the 8-bit CPU (22) by an address and data bus to transmit a changed ISDN message to the main controller means; And a tone encoding circuit 25 connected to the plurality of analog subscriber stations (subscribers # 0 to # 3), a ring generating circuit, a DTMF receiving circuit, and a speech coded decoding circuit for converting analog voice signals into digital data. CODEC); small capacity switching system for an integrated information communication network (ISDN) characterized in that it comprises a.

2. The primary control means (30) according to claim 1, wherein the main control means (30) comprises: system maintenance, processing of layer 2 and 3 protocols, call processing, B channel switching, said primary group speed (PRI) connection means 50 or U connection means. A 16-bit MPU 31 which performs various functions including providing a synchronous clock of each function board when the connection between the network 40 and the network side is disconnected; A memory 32 coupled to the 16-bit MPU 31 by an address and data bus; A real time clock generator (33) for providing a clock to the 16-bit MPU (31); A 256 x 256 digital switch (34) connected to the 16-bit MPU (31) by an address and a data bus; A digital trunk phase locked loop (PLL) 35 connected to the 256 × 256 digital switch 34; And an asynchronous adapter control circuit (36) connected to the 16-bit MPU (31) via an address and data bus.

2. The U connection means (40) according to claim 1, wherein the U connection means (40) extracts only D-channel messages from the 2B + D signals received at each of them, stores them in the built-in FIFO buffer memory, and then receives the messages as interrupts on the MPU 41 side. A plurality of U-interface circuits 43a to 43c to notify the number and provide a plurality of trunk line interfaces; An 8-bit MPU 41 that reads FIFO buffer memories embedded in the plurality of U interface circuits 43a to 43c, adds necessary sentence information, and transmits them to the main controller 30 using the built-in SDLC control function; A memory 42 connected to the plurality of U interface circuits 43a to 43c and an 8-bit MPU 41 by an address and data bus; And a slip buffer 44 for correcting a phase difference of a clock generated when two or more U interface circuits of the plurality of U interface circuits 43a to 43c are activated. Small capacity switching system for Integrated Information Network (ISDN).

2. The PRI connecting means (50) according to claim 1, wherein the PRI connecting means (50) is provided with a D channel control IC for controlling the D channel, and interfaces with the main control means (30) by using a built-in synchronous data link control (SDLC) function. 8-bit MPU 51 to provide a; A memory 52 connected to the 8-bit MPU 51 by an address and data bus; HDLC control circuits 53a and 53b coupled to the address and data buses; First and second European circuit connection circuits (CEPT ICs) 55a and 55b for connecting the first and second CEPT lines; Serial-to-parallel conversion circuits 54a and 54b connected to the address and data bus and the first and second European circuit connection circuits to control the respective first and second European circuit connection circuits 55a and 55b, respectively. ; An oscillator 57 for generating and outputting a specific frequency signal; And a synchronous clock generation circuit 56 connected to the first and second European circuit connection circuits 55a and 55b and the oscillator 57 to provide a clock signal for maintaining the overall synchronization of the system. Small capacity switching system for an integrated information communication network (ISDN), characterized in that the configuration.

※ Note: The disclosure is based on the initial application.