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sta ??? ??

?? 2??? sta ??? ??? ??? ??? ??.

?? ???? sta ??? ??? ??? ??? ??? ????: .

Professional Standard - Post and Telecommunication, sta ??? ??

• YD/T 2627-2013 EPC(Evolved Mobile Packet Core) ????? ??? ?? S6a/S6d/S13/S13'/STa/SWd/SWx/SWa/SWm/S6b

GB-REG, sta ??? ??

• REG NASA-LLIS-1056--1999 ?? X-33 ?? ??? ??(STA) ?? ??

??:   ?? ?? ??, sta ??? ??, sta ??? ??, ??? ?? ??, ?? ?? ??? ??, ?? ?? ?? ??, ?? ??? ??, ??? ????, edta ??? ??, tga ??? ??, ???? ?? ??, ??????, ?? ??? ??, ??? ?? ??, ?? ?? ??? ??, STA ???, STA ???, ??? ??? ??? ??, ? ??? ??? ??, sta ??.