[vm_tech]

I'm not quite sure if ofcom have revised their regulations to be more up to date with IP phones etc. If there is a power cut affecting a VM cabinet, it will most likely also be affecting the customers homes fed from the cabinet, so if they have no power in their homes, the modem which the phone is connected to has no power so it won't work anyway. On FTTP it's stightly different in that a lot of the cabinets are passive cabinets anyway so there isn't actually any power in them. But the device that converts from light into RF (forget what it's called) is powered from the customers home, so again if the house has no power, no phone.