<pre id="gt2y7"><progress id="gt2y7"><center id="gt2y7"></center></progress></pre>

<del id="gt2y7"><dl id="gt2y7"></dl></del>

<optgroup id="gt2y7"></optgroup>

BIP-ISDN

BIP-ISDN

百科解釋

Broadband, Intelligent and Personalized ISD -- 寬帶化、智能化和個(gè)人化的ISDN

通信詞典解釋