发明名称 Multiplexing and demultiplexing of narrowband and broadband services in a transmission connection
摘要 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.
申请公布号 US6937719(B2) 申请公布日期 2005.08.30
申请号 US20010913576 申请日期 2001.08.13
申请人 NOKIA NETWORKS OY 发明人 ELO HARRI
分类号 H04M1/738;(IPC1-7):H04M11/06 主分类号 H04M1/738
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