Answer:
D. All of these are correct
Explanation:
VoIP transmits voice data packets over the internet. It is a low-cost option for receiving personal and business calls because it uses existing infrastructure that is the internet to transmit calls, unlike traditional telephone systems that require specialized equipment such as PBXs that are costly.VoIP also offers the ability to have more than one telephone number, as long as the bandwidth is enough, it allows multiple connections at any given time.
