SummaryAmendment 1 to Recommendation ITU‑T G.984.4 contains various updates to ITU-T G.984.4 (2008). A number of editorial corrections and clarifications are included, along with the following substantive changes and extensions to G-PON OMCI. • OMCI for reach extenders • PM extensions for Ethernet bridge ports and circuit emulation services (pseudowires) • Update of OMCI to align with Recommendation ITU-T G.997.1 (2009) • Revision of the VLAN tagging filter data managed entity • A managed entity to control out-of-band file transfer through OMCI • Extended descriptions and OMCI extensions on traffic management and quality of service • A number of additional minor extensions to OMCI |