*This is a demo system of FastBTS deployed on four test servers (two in China and two in America). Due to the small number of test servers, data-driven server selection (DSS) and adaptive multi-homing (AMH) are currently not fully supported. In addition, we are still working on some bugs caused by VPNs. Any suggestions or comments can be mailed to email@example.com, firstname.lastname@example.org, and email@example.com. We are sincerely looking forward to your valuable feedback to help us further improve FastBTS.