????? ??? ?? ??? ???? ???? ??? ?? ??? ????? ?? ?? ????. ?? ?? 56Kbps ???? ??? ????? ? 6,000~8,000cps ??? ???? ??? ?? ??? ????. ? ??? ???? ?? ??? ??? ?? ??? ??? ???? ?????. ??? ????? ??? ???? ?????.
http://www.intel.com/home/club/dlc.htm‘Pop-up DownLoad Calcutor’? ???? Calculate Speed ???? ???? ??.