1.技术性能分析............................................................................................22
2.调制技术....................................................................................................23
2.1 QAM 调制技术..............................................................................23
2.2 CAP 调制技术...............................................................................24
2.3 DMT 调制技术..............................................................................24
七、ADSL 技术特点..........................................................................................25
八、ADSL 调制方式..........................................................................................26
(1)正交调幅(QAM)............................................................................26
(2)无载波调幅/调相(CAP).............................................................27
(3)离散多音频调(DMT)....................................................................27
九、ADSL Modem 技术.....................................................................................29
ADSL 技术揭密............................................................................................29
ADSL 的诱人之处........................................................................................31
十、ADSL 应用纵横..........................................................................................33
1.端到端的 ATM...........................................................................................33
2.PPP over ATM............................................................................................34
1.支持 PVC.............................................................................................35
2.支持 SVC.............................................................................................36
1)虚拟 UNI 模式............................................................................36
2)DSLAM 信令模式......................................................................37
(1)客户端 ATM 网卡.............................................................38
(2)服务器 ATM 网卡.............................................................39
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