This object specifies the state of the ITU-C transceiver: - loopDown The IDSL link is down, as a result of a near-end has detected a LOS, a LOF, has not exchanged an ACT bit with the downstream BRITE/NT1, or similar fault/condition. - dslSync The IDSL link has achieved physical layer activation with the first downstream entity (iether a BRITE or the NT1). - loopUp The IDSL link has exchanged the ACT bit with the NT1, but LMI signalling is not yet active. This is the normal operating state for PPP operation. - loopUpLmiActive The IDSL link has exchnaged the ACT bit with the NT1 and the LMI signalling is active. This is the normal operating state for frame relay operation.