公开(公告)号：US20030031312A1

公开(公告)日：2003-02-13

申请号：US09913576

申请日：2001-08-13

Applicant: Nokia Networks Oy

Inventor： Harri Elo

IPC: H04M001/00 ,  H04M009/00

CPC classification number: H04M1/738

Abstract: The invention relates to the implementation of narrowband and broadband services in a telecommunications network. A splitter element is connected to a transmission link, the splitter element comprising a passive low-pass filter block connected between the transmission link and a first interface, a high-pass filter unit connected between the transmission link and a second interface, and discrete impedance converting means for adapting the first interface to the characteristic impedance of the transmission link. In order that the impedance matching required by the low-pass filter block may be implemented in an economical way yet maintaining the service quality, the impedance converting means are entirely placed between the interface of the low-pass filter block on the transmission link side and the first interface.

Abstract translation: 本发明涉及电信网络中窄带和宽带业务的实现。 分离器元件连接到传输链路，分离器元件包括连接在传输链路和第一接口之间的无源低通滤波器模块，连接在传输链路和第二接口之间的高通滤波器单元，以及离散阻抗 转换装置，用于使第一接口适配于传输链路的特征阻抗。 为了低成本滤波器块所需的阻抗匹配可以以经济的方式实现，同时保持服务质量，阻抗转换装置完全放置在传输链路侧的低通滤波器块的接口和 第一个接口

公开(公告)号：US20020027984A1

公开(公告)日：2002-03-07

申请号：US09891021

申请日：2001-06-25

Applicant: Nokia Networks Oy

Inventor： Harri Elo

IPC: H04M001/00 ,  H04M003/00

CPC classification number: H04M11/062 ,  H03H7/40 ,  H04L12/10 ,  H04M1/723

Abstract: A filter according to an embodiment of the invention actively adapts terminal equipment and a subscriber line to each other by conforming to the electric properties of the subscriber line. Then the filter virtually changes the electric properties of the subscriber line more advantageous for the terminal equipment.

Abstract translation: 根据本发明的实施例的滤波器通过符合用户线的电特性主动地使终端设备和用户线彼此适配。 然后，滤波器实际上改变了用户线路的电气特性对终端设备更有利。