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G.984

ITU-T Recommendation G.984 is a family of recommendations that defines gigabit passive optical network (GPON) telecommunications access networks. It comprises four recommendations:

• G.984.1, Gigabit-capable Passive Optical Networks (GPON): General characteristics, 2003.
• G.984.2, GPON: Physical Media Dependent (PMD) layer specification, 2003, with amendment 1.
• G.984.3, G-PON: Transmission convergence layer specification, 2004, with amendments 1, 2, 3 and an implementer's guide.
• G.984.4, G-PON: ONT management and control interface (OMCI) specification, 2004, with amendments 1, 2, 3.

The GPON OMCI recommendation G.984.4 draws heavily on G.983.2, which defines the BPON management model. However, the BPON standards are regarded as mature, and G.984.4 is being revised to stand alone. Future work on the PON management model is expected to appear only in the GPON space.