I just wanted to say a quick comment regarding how the US government wants into VoIP at any cost:
You are innocent.
You have done nothing to give the government the right to investigate you or collect your phone records with the intent to prosecute you.
If you’re an American, take a few hours to protect what so many people have fought and died for: your rights to privacy and being innocent until proven guilty.
Use strong encryption, protect your rights, your families, and everything your forefathers died to grant you.