I have had Exede Voice or home phone service since they've had it, and never had any problems using it during data restriction. However, this month, every time I go into data restriction, I get a dial tone, but can't complete (voice) calls, or the sound is too garbled to understand. Every time I call tech support, they have to add 1G of data usage to my account to be able to diagnose the problem, which immediately fixes the problem, and they think they solved the problem. But as soon as the 1G is gone, I have the same problem. I've emailed C/S, but so far no solution(s). This doesn't make any sense. I've been told by any agent I talk to that Voice phone service is not affected by data restriction on my internet service. If I can't get any solution, I will have to cancel the service. I'm not paying for more data usage when I never had this problem before.