4 ms·

> GPON has a total shared capacity of 2.4 Gbps down and 1.2 Gbps. So you'd think if 1 Gbps down is possible, 500 Mbps up would be. The "download" direction is

> GPON has a total shared capacity of 2.4 Gbps down and 1.2 Gbps. So you'd think if 1 Gbps down is possible, 500 Mbps up would be. The "download" direction is sent to you and all your neighbours and only you can access the information as it is AES encrypted to your terminal (CPE, etc.). So you could get 2.4Gbps down, as long as your neighbours are not using it. 1.2Gbps "upload" direction is time shared, so you will never get the full 1.2Gpbs unless you have literally zero neighbours / other terminals on the optical bundle.

orra 3y ago
Dynamic Bandwidth Allocation (DBA) fixes the TDM limited upload that you describe. https://www.lightwaveonline.com/fttx/pon-systems/article/16649607/dynamic-bandwidth-allocation-sets-gpons-apart https://www.lightwaveonline.com/fttx/pon-systems/article/166... Again, CityFibre is not Point to Point fibre. They offer 1Gbps upload on GPON, contended at 1:32. From the horse's mouth: https://cdn.cityfibre.com/Partner-page/Downloads/CF-FTTH-Local.pdf https://cdn.cityfibre.com/Partner-page/Downloads/CF-FTTH-Loc... Even Openreach have a 220Mbit/s upload tier, but it costs more than twice as much so nobody offers it for home users. https://www.openreach.co.uk/orpg/home/products/pricing/loadProductPriceDetails.do?data=SjLGnN8O1mzybN7g39pZiNKvrleClYZjBLZ4w%2FibaalZ6rNZujnCs99NbIKJZPD9hXYmiijxH6wrCQm97GZMyQ%3D%3D https://www.openreach.co.uk/orpg/home/products/pricing/loadP...