Introduction This amendment contains several improvements and editorial corrections aimed at enhancing the readability and utility of the Recommendation. This amendment: ?C specifies the ONU registration method; ?C clarifies the definitions of Dying_Gasp and Deactivate_ONU-ID PLOAM messages; ?C reconciles the description of PON alarms; ?C adds a new appendix clause addressing transmission of MPLS datagram using the G-PON encapsulation method; ?C provides necessary clarifications to several standard items@ including the use of the DBA reference model@ the required number of supported reassembly buffers@ and details of the key exchange.