I been on VOIPO for about 3 weeks. This morning I had to call Comcast about another TV problem. I dialed the number and it took about 30-45 seconds before it rang at Comcast. I tried another number and it worked fined. Last night my wife called a friend. Neither one could hear each other on 3 trys and both dialing out at different times. One was an 800 number and two were local numbers.