Beginning with the BPON technology
base, the participants of FSAN and ITU-T Question 2/15 undertook
to define
a new PON system, named GPON. The approximate goals of this
work were:
To design a PON that operates at Gigabit
and higher data rates.
To craft the physical layer specifications
to suit these higher speeds.
To define the most bandwidth efficient
protocol that reflects the data-centric trends in customer
traffic.
A choice was made to not
require backwards compatibility with the BPON system, because
this would prevent the
achievement of the goals as laid out above. However, the
GPON system uses the teachings of the BPON standards,
with the schemes for ONT Activation & ranging, Dynamic
Bandwidth assignment (DBA), and ONU management
control interface (OMCI) largely reused.
The results of this effort have been a series
of four basic recommendations.
G.984.1 describes the service provider
requirements for the system.
G.984.2 specifies the physical layer
for all the data rate combinations in G-PON.
G.984.3 defines the transmission convergence
layer
G.984.4 defines the OMCI on the system.
The first two G-PON recommendations were ratified
at the January 2003 ITU-T SG15 plenary meeting.
The third was consented at the October 2003 SG15 plenary meeting,
and the fourth is planned for the April
2004 SG15 plenary meeting.
FlexLight actively participated in the editing efforts of the
GPON standards as one of the main editors of G.984.3
standard.
FlexLight’s solution is the world first available GPON
product that complies with the newly accepted ITU-T GPON
standards G.984.1, G.984.2 and G984.3
