You may be asking, what exactly is “Failover”? And the answer is a phone feature offered by Nett-Tell LLC. This great feature is not as common with traditional phone companies and it allows you to set up your phones so that if there is a power outage or the ISP goes down, your calls will be forwarded to another specified number meaning: you never lose a call for any reason. This call forwarding feature and others are all in addition to Nett-Tell LLC’s great VOIP services that come to you for free. Start saving money immediately by giving Nett-Tell LLC a call and try VOIP.