XGS-PON is defined as part of the ITU-T G.9807.1 (physical layer), G.987 (.2/.3/.4) and G.988.1. XGS-PON provides symmetrical (e.g. 10 Gbps downstream and 10 Gbps upstream) transmission, which is a hard requirement for true enterprise Passive Optical LAN.
Fiber’s unlimited bandwidth
Fiber optic cabling knows no upward limit to its capacity. Currently, fiber optic cable bandwidth records are hitting Petabyte speeds, which is a thousand times faster than Terabyte capacity.
Use 10G only where 10G is truly needed
It is a fact that 10G consumes more energy, is larger and costs more. Thus, it is best to be strategic as to what truly requires 10G connectivity. The good news is that upgrades to next-generation 10G XGS-PON can be done on a per ONT (per super-user) basis.