公开(公告)号：EP1318653B1

公开(公告)日：2006-10-04

申请号：EP01830754.6

申请日：2001-12-10

Applicant: STMicroelectronics S.r.l.

Inventor： Lari, Ferdinando ,  Devecchi, Daniele ,  Vizzi, Emanuela

IPC: H04M3/00 ,  H04M11/06 ,  H04M19/00

CPC classification number: H04M3/007 ,  H04M19/003

公开(公告)号：EP1318653A1

公开(公告)日：2003-06-11

申请号：EP01830754.6

申请日：2001-12-10

Applicant: STMicroelectronics S.r.l.

Inventor： Lari, Ferdinando ,  Devecchi, Daniele ,  Vizzi, Emanuela

IPC: H04M3/00 ,  H04M11/06 ,  H04M19/00

CPC classification number: H04M3/007 ,  H04M19/003

Abstract: A line interface (30) for combining a broad-band XDSL signal and a voice-band telephone signal in a copper duplex cable, where the voice-band signal, over and above the voice signal, carries a DC feed for the user telephone and, during the call phase, also a ring signal.
The XDSL signal and the voice signal are coupled to at least one primary winding of a line transformer of which the secondary winding (40) pilots the telephone duplex cable (41). The secondary winding (40) is not DC-coupled with the duplex cable (41) and the ring and feed signals are injected into the duplex cable (41) by a circuit (43) realized in high-voltage technology and
arranged in parallel with the secondary winding (40).
A further inductive winding (45) performs the function of compensating the flow variations induced in the core (44) of the line transformer during the call phase.

Abstract translation: 一个用户线接口（30），用于组合宽频带XDSL信号和在铜双股电缆一个话音频带电话信号，这里的语音频带信号，经和声音信号上面，进行对于用户电话和DC馈送 ，在呼叫阶段，即一个振铃信号。 的XDSL信号和声音信号被耦合到至少一个初级其中A线变压器的绕组次级绕组（40）的导频的双工电话线（41）。 所述次级绕组（40）没有被直流耦合与双面打印电缆（41）和所述环和馈送信号通过实现在高电压技术，并与在平行配置的电路（43）被注入到双股电缆（41） 所述次级绕组（40）。 的进一步感应绕组（45）进行补偿在呼叫阶段中的线路变压器的铁芯（44）所引起的流量的变化的功能。