The extension of funding together with the 28-day window means there is no need for operators to make decisions on their future network in the very immediate future.
Mae ymestyn y cyllid ynghyd â'r ffenestr 28 diwrnod yn golygu nad oes angen i weithredwyr wneud penderfyniadau ar ddyfodol eu rhwydwaith yn y dyfodol agos iawn.