Summary

Supplement 48 to ITU-T G-series Recommendations provides information on the electrical interface between media access control (MAC) with serializer/deserializer (SERDES) and physical media dependent (PMD) for a 10-Gigabit-capable passive optical network (XG-PON) system with asymmetric nominal data rate of 9.95328 Gbit/s in the downstream direction and 2.48832 Gbit/s in the upstream direction, hereinafter referred to as XG‑PON1.

Information is provided in order to facilitate the interoperability level and mass market use of the equipment based on the ITU-T G.987 series of Recommendations. The information provided in this Supplement is complementary to the physical layer requirements and specifications for the XG-PON physical media dependent (PMD) layer for XG-PON described in Recommendation ITU‑T G.987.2. This scope of the information provided in this Supplement is focused on the elements in the interface which are important to the XG‑PON1 specific interface, and does not intend to cover full specification for the mechanical and physical aspects of the optical PMD, which can be found in various industry multi-source agreement (MSA) PMD specifications for 10G optics.