permanent service circuit 中文意思是什麼
permanent service circuit
解釋
永久性業務電路-
Information technology - international standardized profile ra - relaying the connectionless - mode network service - definition of profile ra51. 1121, relaying the connectionless - mode network service between csma cd lan subnetworks and psdns using virtual calls over a digital data circuit csdn leased line permanent access
信息技術.國際標準華輪廓ra .轉接無連接方式的網路服務.第9部分: ra51 . 1121輪廓的定義.數字數據電路csdn租用的線路固定訪問的虛擬呼叫轉接csma cd lan子網與psdns間的無連接方式的網路服務
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