A.DSLAM B.DSL modem C.ERX Edge Router D.customer workstation
A.RAS B.DSLAM C.ATMswitch D.RADIUSserver
A.The ERX router sends an Active Discovery Off ermessage. B.The ERX router sendsan Active Discovery Initiation message. C.The customer device sends an Active Discovery Offer message. D.The customer device sends an Active Discovery Initiation message.