【正文】
Intensity (Luminance) 4 C Color (Chrominance) SVIDEO 視音頻背景知識(shí) mm STEREO TELEPHONE MALE at the cable. Name Description L Left Signal R Right Signal GROUND Ground AUDIO 視音頻背景知識(shí) RJ45 FEMALE CONNECTOR at the work interface cards/hubs. RJ45 MALE CONNECTOR at the cables. Pin Name Description 1 TX+ Tranceive Data+ 2 TX Tranceive Data 3 RX+ Receive Data+ 4 n/c Not connected 5 n/c Not connected 6 RX Receive Data 7 n/c Not connected 8 n/c Not connected Ether 10/100BaseT 視音頻背景知識(shí) 。 多點(diǎn)視頻會(huì)議系統(tǒng) PCS (Personal Conferencing Specification ) 國(guó)際電訊聯(lián)盟 ITU 國(guó)際電報(bào)電話咨詢委員會(huì) CCITT 視頻會(huì)議系統(tǒng)的標(biāo)準(zhǔn) ITUT ITUT Standards ? : 在電路交換數(shù)字網(wǎng)絡(luò)(如 ISDN)上傳 輸音頻與視頻的框架標(biāo)準(zhǔn) ? : ATM網(wǎng)絡(luò)上的會(huì)議電話終端標(biāo)準(zhǔn) (ATM 網(wǎng)上的 H. 320) ? : 有服務(wù)質(zhì)量保證的廣域網(wǎng)絡(luò)上的會(huì)議電 話終端標(biāo)準(zhǔn) ITUT Standards ? : 沒有服務(wù)質(zhì)量保證的局域網(wǎng)絡(luò)上的會(huì)議