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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, 2008, with amendment 1.
G.984.2, GPON: Physical Media Dependent (PMD) layer specification, 2003, with amendment 1 and 2.
G.984.3, G-PON: Transmission convergence layer specification, 2008, with amendments 1, 2 and erratum 1.
G.984.4, G-PON: ONT management and control interface (OMCI) specification, 2008, with amendments 1, 2, 3, corrigendum 1, erratum 1 and an implementer's guide.

The GPON OMCI recommendation G.984.4 draws on G.983.2, which defines the BPON management model. However, G.984.4 removed all references to ATM. G.988 is a stand-alone OMCI recommendation and supersedes G.984.4 except for G-PON specifics that are not defined in G.988. Future work on the PON management model is expected to appear only in the GPON space.

G.987 XG-PON

ITU-T Recommendation G.987 is a family of recommendations that defines 10 gigabit passive optical network (XG-PON) telecommunications access networks. It comprises four recommendations:

G.987, 10-Gigabit-capable passive optical network (XG-PON) systems: Definitions, Abbreviations, and Acronyms, 2010.
G.987.1, XG-PON: General requirements, 2010.
G.987.2, XG-PON: Physical media dependent (PMD) layer specification, 2010.
G.987.3, XG-PON: Transmission convergence (TC) specifications, 2010.

G.988 OMCI

ITU-T Recommendation G.988 defines a management and control interface for optical network units. It comprises one recommendation:

G.988, ONU management and control interface (OMCI) specification, 2010.

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-ITU-T Recommendation G.984 is a family of recommendations that defines gigabit passive optical network ([[GPON]]) telecommunications access networks. It comprises four recommendations:
+[[ITU-T]] Recommendation G.984 is a family of recommendations that defines gigabit passive optical network ([[GPON]]) telecommunications access networks. It comprises four recommendations:
 * [http://www.itu.int/rec/T-REC-G.984.1/en G.984.1], Gigabit-capable Passive Optical Networks (GPON): General characteristics, 2008, with amendment 1.
@@ Line 5: / Line 5: @@
 * [http://www.itu.int/rec/T-REC-G.984.3/en G.984.3], G-PON: Transmission convergence layer specification, 2008, with amendments 1, 2 and erratum 1.
 * [http://www.itu.int/rec/T-REC-G.984.4/en G.984.4], G-PON: ONT management and control interface (OMCI) specification, 2008, with amendments 1, 2, 3, corrigendum 1, erratum 1 and an implementer's guide.
-* [http://www.itu.int/rec/T-REC-G.988/en G.988], ONU management and control interface (OMCI) specification, 2010.
-The GPON OMCI recommendation G.984.4 draws on [[G.983|G.983.2]], which defines the BPON management model. However, G.984.4 has been revised to stand alone as G.988. Future work on the PON management model is expected to appear only in the GPON space.
+The GPON OMCI recommendation G.984.4 draws on [[G.983|G.983.2]], which defines the BPON management model. However, G.984.4 removed all references to ATM. G.988 is a stand-alone OMCI recommendation and supersedes G.984.4 except for G-PON specifics that are not defined in G.988. Future work on the PON management model is expected to appear only in the GPON space.
+==G.987 XG-PON==
+[[ITU-T]] Recommendation G.987 is a family of recommendations that defines 10 gigabit passive optical network ([[XG-PON]]) telecommunications access networks. It comprises four recommendations:
+* [http://www.itu.int/rec/T-REC-G.987/en G.987], 10-Gigabit-capable passive optical network (XG-PON) systems: Definitions, Abbreviations, and Acronyms, 2010.
+* [http://www.itu.int/rec/T-REC-G.987.1/en G.987.1], XG-PON: General requirements, 2010.
+* [http://www.itu.int/rec/T-REC-G.987.2/en G.987.2], XG-PON: Physical media dependent (PMD) layer specification, 2010.
+* [http://www.itu.int/rec/T-REC-G.987.3/en G.987.3], XG-PON: Transmission convergence (TC) specifications, 2010.
+==G.988 OMCI==
+[[ITU-T]] Recommendation G.988 defines a management and control interface for optical network units. It comprises one recommendation:
+* [http://www.itu.int/rec/T-REC-G.988/en G.988], ONU management and control interface (OMCI) specification, 2010.
-==Next Generation - 10G==
-[[G.987]] is being developed for 10GPON: 10Gbps downstream and 2.5Gps upstream – framing is ”G-PON like”. This compares to the standard for [[10G-EPON]]. [http://conference.vde.com/ecoc-2009/programs/documents/sp_stefandahlfort_ng%20access.pdf]
 [[Category:ITU-T recommendations]]