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Doortelephone
申请(专利号：
EP19930402753专利号：EP0597774A1主分类号：H04M11/02申请权利人：
LEGRAND公开国代码：EP优先权国家：
FR摘要：
Thisisadoorofthetypeincluding,inadditiontoacentralunit(11suitableforsupplyingitwithpower,oneexternalunit(14availabletoavisitor,oneinternalunit(16perdwelling,andwiring(17suitableforsettingupacommunicationslinkbetweentheexternalunit(14andsuchaninternalunit(16.Accordingtotheinvention,theassemblyforcallingfromtheexternalunit(14includesakeyboardwithatleasttwokeysallowingacodedcalltoeachoftheinternalunits(16and,inadditiontothetwo-wirelink(19necessarybetweentheexternalunit(14andthebolt(18,theaudiopartofthewiring(17isreduced,ontheonehand,toatwo-wirelinkbetweentheexternalunit(14andthecentralunit(11,and,ontheotherhand,toasingle-wirelink(27betweenthecentralunit(11andeachoftheinternalunits(16withwhichareturn申请日：1993-11-10公开公告日：
1994-05-18分类号：
H04M11/02;H04M1/02发明设计人：
DESSARPS,JACQUES;PECOUT,PHILIPPE;VERMERSCH,FREDERIC;DANIELLOT,GERARD申请国代码：
EP优先权：
19921113FR9213658摘要附图：

(28isassociated,commontoalloftheseinternalunits(16.Application,especially,toequippingcommunaldwellings.主权项：
Portierd'immeubledugenrecomportant,outreunpostecentral(11propreàsonalimentation,unpo

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