Abstract: Single physical layer User-data transfer ＆ switching Platform Architecture （SUPA） is one for Next Generation Internet （NGI）,which is based on Ethernet-oriented Physical Frame Timeslot Switching （EPFTS） and defined by SC-Netcom. Unlike previous work, where

Key words: Next generation internet （NGI） ,Single physical layer user-data transfer ＆- switching platform architecture （SLrPA）, Ethernet-oriented physical frame timeslot switching （EPFTS）, User-network interface/network-network interface （UNI/NNI）,Quality of service