Will I have to pay monthly charges? Yves March 01, 2018 14:49 Updated No. The subscription for your number is yearly. Related articles How much does a telephone call cost me via the Internet ? 3StarsNet is cheaper? Do the calculation in 5 steps! How long is my call credit valid? How do I subscribe? How do I change my sip password Comments 0 comments Please sign in to leave a comment.