Voip service is interrupted during a power failure true or false

VoIP stands for Voice over Internet Protocol. VoIP is a digital telephone service in which calls are sent and received over the Internet. High speed Internet connection a VoIP phone service provider are needed in order to have this type of service.  
It is true, that VoIP service is interrupted during a power failure. You should have backup power supplies to support your VoIP network when the power is out in order to have uninterrupted service. 

Ithink it's a) the user may use the song without the permission of the creator but only in certain circumstances