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OrnsteinVoiceL. StewartReferenceAaEtherphonePhysical Diags.EAN36.sil36:;TOP VIEWPowerSupply(on end)NNNNNNDigital Board (ETT)Analog and Locator BoardsSIDE VIEW(Analog and Locator Board Side)LlPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP2 paralleled Line In and 2 paralleled line out jacksPowerSupplySpkr/MikeLine OutLine InHandsetPhone LineExt. I/O bus:;PARCXEROXFileProjectDesignerRevDatePageS. OrnsteinVoiceL. StewartReferenceAaEtherphonePhysical Diags.EAN36.sil36SIDE VIEWSupplyPowerlL(ETT Board side)Ethernet XceiverCablemounted on speakerExt IO bus 2 serial linesReset and NMIC buttonsVoice Bus and I/O control linesETTPS77/12/82(ELB)(EAN)(ETT)^^PERSPECTIVE VIEWrailrail...Pwr.Pwr sw.& fusePNPPPPPPoooPPPVVVVmmmmw???.PPPPPPPPPPPLocator Board(Connto ETT)Analog Boardto ETT)(ConnDigital Board(Connto ELB)(Connto EAN)^^MMInter-board connections (direct mother/daughter)Notes:ETT board rides in rails on frameEAN and ELB boards mount as daughtersonto ETT MotheboardEntire Etherphone box can either sit onfeet on horizontal surface or be hungon a swinging wall-mount (as shown inPerspective view).Ext. I/O busMPhone LineHandsetm\EthernetMike/Spkr.fuseSwitchSer. 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