|
Work item:
|
G.9805 (2022) Amd.2
|
|
Subject/title:
|
Coexistence of Passive Optical Network Systems - Amendment 2
|
|
Status:
|
Consented on 2025-10-24 [Issued from previous study period]
|
|
Approval process:
|
AAP
|
|
Type of work item:
|
Recommendation
|
|
Version:
|
-
|
|
Equivalent number:
|
-
|
|
Timing:
|
2025-10 (Medium priority)
|
|
Liaison:
|
-
|
|
Supporting members:
|
-
|
|
Summary:
|
Recommendation ITU-T G.9805 presents three methods for the coexistence of multiple PON generations on a common ODN: Coexistence element (CE), multi-PON module (MPM), and splitter-based. These allow the reuse of already deployed fibre and splitters when evolving a legacy PON to a higher capacity. Methods for calculating required isolation for Coexistence element, filter considerations for HSP and XG(S)-PON OLT, and optical interface parameters for GPON/XG(S)-PON MPM supporting Class B+, C+ and D OPL are also described.
Amendment 1 includes additional 3-gen PON systems coexistence methods, and Crosstalk analysis between PON systems.
Amendment 2 includes Class C+ and D OPL specifications for GPON/XG(S)-PON 2-generation MPM and GPON/XG(S)-PON/50G-PON 3-generation MPM, and specifications for 10G-EPON/50G-PON 2-generation MPM and EPON/10G-EPON/50G-PON 3-generation MPM. The 12.5Gb/s upstream line rate option for 50G-PON is deprecated.
|
|
Comment:
|
-
|
|
Reference(s):
|
|
|
Historic references:
|
|
Contact(s):
|
|
| ITU-T A.5 justification(s): |
|
|
|
|
First registration in the WP:
2024-01-10 18:05:23
|
|
Last update:
2025-10-28 14:02:25
|
