Click Fraud
Sep
17
2012
Ranging considerations in PON networks

The PON network is having different distances between OLT and ONTs due its physical location. This results into different times required for signal to reach its destination. For successful time delay avoidance, ITU-T Recommendation G.983.1 introduces concept called ranging. Ranging protocol allows adjust the timing between ONT and the OLT on distance up to 20 km, giving flexibility in equipment installation. The OLT is sending specific grand to activate ranging and opens up a window to receive response from ONT. The ONT is sending a ranging call back to OLT, after receiving the grant. OLT is assigning an equalization delay to specific ONT, based on the elapsed time between sending ranging grant and receiving response.

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!

Raymond – USA

Great experience – units worked straight out of the box – just needed plug in cables and we were done. I also like the possibility to enable jumbo frames, while we do not have a need for this feature at the current moment it’s great to have this option.