http://upload.wikimedia.org/wikipedia/commons/thumb/5/5c/X25-network-diagram-0a.svg/800px-X25-network-diagram-0a.svg.png
ʂ̃TCgɃWv悤ƂĂ܂BXΏL̃NNbNĂ
UPLIFTōLȂő̌܂傤IKȉ{Ct܂I