This Recommendation addresses the general characteristics of Gigabit-capable Passive Optical
Network (GPON) systems, in order to guide and motivate the physical layer and the transmission
convergence layer specifications. The general characteristics include examples of services, User
Network Interfaces (UNI) and Service Node Interfaces (SNI) that are requested by network
operators. Also, this Recommendation shows the principal deployment configuration.
As much as possible, this Recommendation maintains characteristics from ITU-T Rec. G.982 and
G.983.x series of Recommendations. This is to promote backward compatibility with existing
Optical Distribution Networks (ODN) that complies with those Recommendations.
GPON systems are characterized, in general, by an Optical Line Termination (OLT) system and an
Optical Network Unit (ONU) or Optical Network Termination (ONT) with a passive Optical
Distribution Network (ODN) interconnecting them. There is, in general, a one-to-many relationship
between the OLT and the ONU/ONTs respectively.
ITU-T G.984.1-2008 Referenced Document
ITU-T G.652-2003 Characteristics of a single-mode optical fibre and cable SERIES G: TRANSMISSION SYSTEMS AND MEDIA@ DIGITAL SYSTEMS AND NETWORKS Transmission media characteristics – Optical fibre cables (Study Group 15)
ITU-T G.808.1-2006 Generic protection switching ?Linear trail and subnetwork protection Study Group 15
ITU-T G.902-1995 Framework Recommendation on Functional Access Networks (AN); Architecture and Functions Access Types Management and Service Node Aspects - Series G: Transmission Systems and Media; Digital Transmission Systems - Digital Sections and Digital Line System -
ITU-T G.982-1996 Optical Access Networks to Support Services Up to the ISDN Primary Rate or Equivalent Bit Rates - Series G: Transmission Systems and Media Digital Systems and Networks Digital Transmission Systems - Digital Sections and Digital Line System - Optical Line
ITU-T G.983.1-1998 Broadband Optical Access Systems Based on Passive Optical Networks (PON) - Series G: Transmission Systems and Media@ Digital Systems and Networks Digital Transmission Systems - Digital Sections and Digital Line System - Optical Line Systems for Local and
ITU-T G.983.2-2002 ONT managment and control interface specification for B-PON (Study Group 15)
ITU-T G.983.3-2001 A Broadband Optical Access System with Increased Service Capability by Wavelength Allocation Series G: Transmission Systems and Media@ Digital Systems and Networks Digital Sections and Digital Line Systems - Optical Line Systems for Local and Access Netwo
ITU-T G.984.2-2003 Gigabit-capable Passive Optical Networks (GPON): Physical Media Dependent (PMD) layer specification SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Digital sections and digital line system – Optical line systems for local and access
ITU-T G.984.4-2008 Gigabit-capable Passive Optical Networks (G-PON): ONT management and control interface specification Study Group 15
ITU-T G.984.5-2007 Gigabit-capable Passive Optical Networks (G-PON): Enhancement band Study Group 15
ITU-T I.112-1993 Vocabulary of Terms for ISDNs (Study Group XVIII) 19 pp
ITU-T G.984.1-2008 history
2008ITU-T G.984.1-2008 Gigabit-capable passive optical networks (GPON): General characteristics Study Group 15
2003ITU-T G.984.1-2003 Gigabit-capable Passive Optical Networks (GPON): General characteristics SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Digital sections and digital line system ?Optical line systems for local and access networks Study Group 15