Three main types of EPON are differentiating in speed and distance. 1000 BASE-PX10 is providing maximum distance of 10 km, while 1000 BASE-PX20 and 10G EPON maximum distance is 20 km.
Table 1. Features of 1000 BASE-PX10 and 1000 BASE-PX20.
| Description | 1000 BASE-PX10 Upstream | 1000 BASE-PX10 Downstream | 1000 BASE-PX20 Upstream | 1000 BASE-PX20 Downstream |
| Data rate (Gbps) | 1 | 1 | 1 | 1 |
| Wavelength (nm) | 1310 | 1490 | 1310 | 1490 |
| Available power budget (dB) | 23 | 21 | 26 | 26 |
| Channel insertion loss (min/max, dB) | 5/20 | 5/19.5 | 10/24 | 10/23.5 |
| Allocation for penalties (dB) | 3 | 1.5 | 2 | 2.5 |
| Return loss (dB) | 20 | 20 | 20 | 20 |
| Max split ratio | 1:16 (1:32 with FEC) | 1:16 (1:32 with FEC) | 1:16 (1:32 with FEC) | 1:16 (1:32 with FEC) |
| Physical distance (km) | 10 | 10 | 20 | 20 |
As shown in Table 1, first two types share the same symmetrical data rate of 1 Gbps upstream and downstream, as well as wavelengths of 1310 nm upstream and 1490 nm downstream. Split ratio is also the same for both types – 1:16 without FEC and 1:32 with FEC.
10G EPON supports both asymmetric and symmetric data rates. It can be either 10 Gbps downstream and 1 Gbps upstream or 10 Gbps both ways.
Testimonials
Lomoveishiy – Finland
I needed those to connect my PC on the third floor to have internet access in that room, and ISP installed their modem on the first floor only. After dropping fiber patch cables, plugged in all cables into these media converters at both sides, and link came up instantly. Was much easier than I thought!
