?????????:?? ??????????????

??

???????????1????????23?? ???,?????????????????22???????????????,???,??????????,???

???,???40????(??NGN),????«????????»?????«????????????»?????1996???2011????

?,NGN???,“NGN??????«????????????????»???1996?????????????????2011????(??)???????????,?«?????????????????????»??,???????????????”

???,?????“???????????”??????,??????“?”?

?????,?????????????NGN?????«?????????????????»???????,??????????,??????????????????????????????????,???????????????????????1000??????????????,??????

?????????“?????”,??????????? ????:??????

?????????

??????????????:?? ???????????????????

????????