Edit: Oh, you said SIP... Thanks, I'll review. You are suggesting I get the kids to use a SIM I control? My kids split time at my house and their mom's so I d

Edit: Oh, you said SIP... Thanks, I'll review. You are suggesting I get the kids to use a SIM I control? My kids split time at my house and their mom's so I don't see this being an easy solution. But, it is an interesting idea.