ITU-T Recommendations

Amendment 1 to Recommendation ITU-T G.984.5 (2014) collects three methods to coexist multiple PON generations on a common ODN to reuse deployed fibre and splitters to evolve operator networks to higher capacity. Amendment 1 includes a new Appendix IV for a Multi-PON Module (MPM) with integrated WDM within the OLT. The Appendix III provides a method for CEx isolation and directivity calculations in multi-interferer scenarios. Appendix I has been revised with new isolation values and directivity values derived using the method in Appendix III for a 4-port CEx with GPON, XG(S)-PON, NGPON2, and an OTDR. Appendix V provides a method to have PON coexistence using a 2:N splitter.