I don't think we need symmetrical, but could we get 4:1 ratio instead of 20:1 please? PIN fiber that Verizon FiOS uses is 4:1 at the physical layer, or it was with BPON and GPON standards. I did not follow. I imagine they can sell symmetrical since most people don't use much upstream. Oversubscription is standard and works great in almost all cases.