The main disadvantage of VoIP compared to traditional lines is that it is totally dependent on the strength of your broadband connection. No internet equals no VoIP phone service. It does not end there either. Poor internet connection can also affect call quality and lead to problems like jitter and latency.

How reliable is VoIP?

(We dispelled this myth in a previous post.) VoIP IS reliable. As long as you have a high-speed internet connection, youll experience high-quality voice calls with 99.9% connection uptime. And you can boost this uptime to 99.99% by making sure you have a backup power source in case of power outages.

Could the Internet be wiped out?

“Its possible, but very unlikely, for the entire internet to go down,” Juola says. “Just as its possible to flip a coin fifty times and have it come up heads each time. The odds against that are roughly 2^50 to one, but its possible.”