Implementation Personal Handy-phone System

astel-brand phs base station in tokyo, japan

originally developed ntt laboratory in japan in 1989 , far simpler implement , deploy competing systems pdc or gsm, commercial services has been started 3 phs operators (ntt-personal, ddi-pocket, , astel) in japan in 1995 forming piaf (phs internet access forum). however, service has been pejoratively dubbed poor man s cellular , due limited range , roaming abilities. market share in japan has been declining , ntt docomo, has absorbed ntt personal, , astel terminated phs service in january 2008. other countries phs networks, have terminated offering phs services , migrated gsm.

wireless local loop (wll) systems based on phs technology in use in of above-mentioned countries. in recent years, willcom, formerly ddi-pocket, introducing flat-rate wireless network , flat-rate calling in japan, has reversed local fate of phs extent. in china, there seen explosive expansion of subscribers until around 2005, has been calming down in 2006. in chile, telefónica del sur launched phs-based telephony service in cities of southern part of country in march 2006. in brazil, suporte tecnologia has phs-based telephony service in betim, state of minas gerais, , transit telecom has announced rollout of phs network in 2007.

china telecom operated pas system in china, though technically not regarded allowed provide mobile services, because of particularities of chinese governance. china netcom, other fixed-line operator in china, provides xiaolingtong service. system runaway hit, on 90 million subscribers signed of 2007. largest vendors of system utstarcom , zte. however, low priced mobile phones rapidly replacing phs. ministry of industry , information technology of people s republic of china issued notices on 13 february 2009 both registration of new users , expansion of network discontinued service ended end of 2011.

a phs global roaming service available between japan (willcom), taiwan, , thailand.