We have used it for about 5 years and haven't experienced any problems. Our phone bill with verizon was over $650 per month every month, once we switched to Vonage we pay something like $112 per month for 6 lines. You do need a high speed Internet connection such as road runner but I really like the fact that if something happens such as a power outage, your calls are forwarded to any number you'd like such as your cell phone.