대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)
- 대한전기학회 1987년도 전기.전자공학 학술대회 논문집(II)
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- Pages.894-897
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- 1987
수화자 반향을 고려한 자국내 최소 전송손실에 대한 고찰
A Consideration on the Minimum Transmission Loss for the Intraoffice Call Path Based on the Listener Echo
- Jang, Chung-Ryong (K.T.A. Research Center) ;
- Hong, Jin-Woo (K.T.A. Research Center)
- 발행 : 1987.07.03
초록
Listener echos, which arise in multiple 4-wire loop connections(MLC) during the evolving switched telephone network, impare voice-band data signal transmission performance. This paper first shows the calculation method of the total number of listener echo loops over N 4-wire physical loops and presents the additative law for listener echos. It next demonstrates that about 4 dB should be ensured to Eke the transmission loss of intraoffice call path be minimum for the voice-band data service in a digital local switch.
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