Line interface for combining a voice band signal and an XDSL signal on a twisted-pair copper line
作者： Ferdinando Lari , Daniele Devecchi , Emanuela Vizzi
DOI:
关键词: Electrical engineering 、 Twisted pair 、 Signal on 、 Transformer 、 Engineering 、 Digital subscriber line
摘要: A line interface for combining a broad-band XDSL signal and voice-band telephone in copper duplex cable, where the signal, over above voice carries DC feed user and, during call phase, also ring signal. The are coupled to at least one primary winding of transformer which secondary pilots cable. is not DC-coupled with cable signals injected into by circuit realized high-voltage technology arranged parallel winding. further inductive performs function compensating flow variations induced core phase.
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