A.46 B.82 C.81 D.52
A.高速上網(wǎng)(含WLAN) B.高清IPTV C.VOIP語(yǔ)音業(yè)務(wù) D.專網(wǎng)上網(wǎng)
A.供電設(shè)備PSE B.受電設(shè)備PD C.PC D.PM