대한전자공학회:학술대회논문집 (Proceedings of the IEEK Conference)
- 대한전자공학회 1999년도 하계종합학술대회 논문집
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- Pages.5-8
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- 1999
Two-Wire ISDN S-Interface Transmission System
- Kim, Whan-Woo (Departments of Electronics Engineering, Chungnam National University) ;
- Kim, Bo-Gwan (Departments of Electronics Engineering, Chungnam National University) ;
- Jein Baek (Dept. of Information & Communications Engineering, Hannam University) ;
- Kim, Dae-Young (Informational and Communications Engineering, Chungnam National University)
- 발행 : 1999.06.01
초록
In this paper, we suggest a way of implementing ISDN S-Interface through two-wire premises telephone networks instead of using four wires as in the existing ISDN systems. This will help many developing or underdeveloped countries in the world to introduce ISDN services, where they have only two or low wires as in-building telephone networks. We suggest new physical-layer specifications for two-wire S-interface similar to that in ITU-T recommendations I.430 for four-wire systems, design a tranceiver according to the suggested specifications, and implement it using an FPGA We build a test board with the chip on it and succeed in connecting to Internet.
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