The paper presents an overview of widely accepted passive optical network (PON) solutions and provides the results of comparative OPTSIM simulation for PON technological facilities involving optical layers with the aim to reveal fiber-to-the-x. Traffic load is simulated over PON optical layer using OPNET Modeler to determine potential advantages and drawbacks of proposed FTTx solution with PON elements in access networks. The authors show that, an optimal transmission speed for PON FTTx would lie in the range 1.25 Gbit/s and 5.0 Gbit/s with a standard PON network architecture, which could be raised to 10 Gbit/s , however in this case we have to change the end user`s equipment. In standards that specify the PON’s functionality two distances: 10 km and 20 km are indicated. Our simulation shows that, after upgrading the receiver optical filter, 10 Gbit/s over 40 km could be reached.