sgsn serving gprs support node 中文意思是什麼
sgsn serving gprs support node
解釋
服務-
Sgsn 900 1800mhz tdma digital cellular mobile communication network test method of gprs general packet radio service base station system and serving gprs support node interface
900 1800mhz tdma數字蜂窩移動通信網通用分組無線業務gprs基站子系統與服務gprs支持節點
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