A.SGSN B.MSC C.Wap Gateway D.Radius Server
A.GGSN B.DNS/DHCP C.外部認(rèn)證服務(wù)器 D.Firewall
A.手機(jī)脫網(wǎng) B.手機(jī)斷線(PDP Deactivation) C.上網(wǎng)服務(wù)暫時(shí)中斷 D.毫無(wú)影響