PenultimateHop:maverick: The million dollar question now is who is responsible and accepts liability for the unit, maintenance, etc ?
That's a big issue.
Another one with a single battery system is whether the ONT vendor will warrant the ONT if it's used with a non-standard (i.e. theirs) power supply.
Exactly and we have this exact issue right now as AlarmNZ is well aware, we struck this exact issue during talks around this very topic during initial testing.