Personal Handyphone System (PHS) subscribers have grown to about seven
million since this standard-bearer of personal communications service
s was inaugurated more than two years ago. As a homegrown technology i
n Japan, PHS is gradually spreading throughout the world, especially i
n Asia. This is the result of the Personal Handyphone System Memorandu
m of Understanding (PHS MoU) Group, an international organization tha
t is promoting PHS. This article focuses mainly on the technical activ
ities of the PHS MoU Group.