Telecommunications equipment,申请号EP19970308208-传众专利搜索

Telecommunications equipment

申请公布号：EP0844802(A2)

申请号：EP19970308208

申请日期：1997.10.16

申请公布日期：1998.05.27

申请人：

MARCONI COMMUNICATIONS LIMITED

发明人：PROCTOR, RICHARD JOHN

分类号：H04L12/70;H04Q11/04;(IPC1-7):H04Q11/04

主分类号：H04L12/70

摘要：<p>A copper wire pair linking network terminating equipment 3 in a home with a relatively localised multiplexer 2 eg. in a street cabinet carries high data rate eg. VDSL signals comprising eg. ATM and ISDN combined at the multiplexer. It is necessary for the multiplexer to be provided with a power supply but, in the event of failure of the power supply, VDSL signals could not be generated in the multiplexer. To provide some fall-back in such a case, a metal link from the local exchange to the network terminating equipment is formed eg. using relays A, B and C, permitting ISDN signals to be received in the home even though the higher data rate ATM has now failed. <IMAGE></p>