KR930011570A - Public switched telephone network connection circuit of U interface digital telephone - Google Patents
Public switched telephone network connection circuit of U interface digital telephone Download PDFInfo
- Publication number
- KR930011570A KR930011570A KR1019910021262A KR910021262A KR930011570A KR 930011570 A KR930011570 A KR 930011570A KR 1019910021262 A KR1019910021262 A KR 1019910021262A KR 910021262 A KR910021262 A KR 910021262A KR 930011570 A KR930011570 A KR 930011570A
- Authority
- KR
- South Korea
- Prior art keywords
- digital
- public switched
- interface
- switched telephone
- telephone network
- Prior art date
Links
Landscapes
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
종합정보통신망에 있어서, U인터페이스전화기를 공중 교환 전화망에 연결하는 회로에 관한 것이다. 현재까지의 종합 정보 통신망에서는 기존 전화단말과 종합정보통신망 단말등이 혼재되어 상호 접속에 문제점이 많았던 관계로 U인터페이스전화기를 공중 교환 전화망에 연결하여 그와 같은 혼재를 효율적으로 운영한다.In a general information communication network, the present invention relates to a circuit for connecting a U interface telephone to a public switched telephone network. In the integrated information communication network up to now, the existing telephone terminal and the integrated information communication network terminal have been mixed, and there are many problems in the interconnection. Therefore, the U interface telephone is connected to the public switched telephone network to efficiently operate such mixing.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.
제1도는 본 발명의 회로도.1 is a circuit diagram of the present invention.
제2도는 각 입출력 버스상의 채널 상태도.2 is a channel state diagram on each input / output bus.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019910021262A KR930011570A (en) | 1991-11-26 | 1991-11-26 | Public switched telephone network connection circuit of U interface digital telephone |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019910021262A KR930011570A (en) | 1991-11-26 | 1991-11-26 | Public switched telephone network connection circuit of U interface digital telephone |
Publications (1)
Publication Number | Publication Date |
---|---|
KR930011570A true KR930011570A (en) | 1993-06-24 |
Family
ID=67356284
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019910021262A KR930011570A (en) | 1991-11-26 | 1991-11-26 | Public switched telephone network connection circuit of U interface digital telephone |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR930011570A (en) |
-
1991
- 1991-11-26 KR KR1019910021262A patent/KR930011570A/en not_active Application Discontinuation
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR960006487A (en) | Multimedia Conferencing System and How to Run a Multimedia Conferencing | |
US4850047A (en) | Optical bus communication system utilizing frame format signals | |
US5471517A (en) | Subscriber system testing method | |
WO1989011189A1 (en) | D channel monitor | |
JP3094087B2 (en) | Interface unit | |
KR860001482A (en) | IC device | |
US4538033A (en) | Data bridge with gating and/or testing | |
KR930011570A (en) | Public switched telephone network connection circuit of U interface digital telephone | |
CN1190831A (en) | Equipment for connecting modem to public telephone line | |
EP0390588A3 (en) | Input/output switching circuit | |
KR880700606A (en) | System processor interface unit | |
KR960025095A (en) | Common communication device of audio video system | |
KR100297289B1 (en) | Apparatus for union subscriber interface and control method thereof | |
KR950003902Y1 (en) | Port interface circuit using in two or more ways | |
KR960016307A (en) | Device and method for connecting digital key phone in digital key phone system | |
EP0055912A2 (en) | A switch assembly multiplexing system | |
KR900013748A (en) | Multifunctional Portable Track Tester | |
JPS61140257A (en) | Data communication mode automatic selection system | |
KR930022807A (en) | Switch substitute circuit of U-interface digital telephone | |
KR970078217A (en) | Complex interface card for Integrated Services Digital Network (ISDN) | |
KR960043633A (en) | Bree bus interface card that can be connected to Ss Seven | |
KR940012983A (en) | Automatic selection circuit and method of external device of system | |
KR900015491A (en) | Interface circuit for data communication | |
JPS62299138A (en) | Electric connecting condition selection system for data interface device | |
KR940025227A (en) | Communication circuit using bus line |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WITN | Withdrawal due to no request for examination |