?????????????????1?????23??????????????????????? ??????,???22????????,??,?????????????,??????????????
??????,???????????????????????????40?????????????(?????NGN),???«?????????????????»?????«??????»?1996??2011??
?,NGN??,“NGN????????????«??????????»?????????????????1996???2011???????????????(???)?????????,????????????????«????»??????,?????????????????”
??,???“?????????????????”????,??????“???????????”?
???,???NGN?????«?????»???????????,???,??????,?????????????????????1000????,???
?????“?????”,??????????? ???:???
??:????3??????????????
????????????139??24134?
?????????????????????
?????10?????????????
????????:????????????
???????????80?????????
????????:????????????
??:???????????????????
???«???»???????????(?)
??«??»?????????????
?????????:???3???«??»??
???«???»???????????(?)
«?????»???????????
??:??????????????????
“????”?????????:??????
?????????????????????
?????????????:?????????
????????????????
«???»???????????S????
LG?????????82%
2?????????????????
????????4????????????
??????????????????
??????136??????????????
????:??????“???”??????