CAJ | 학술논문

非对称数字用户回路(VDSL)技术采用了先进的调制技术，它能不间断连接，同时提供数据业务和话音业务通道，使用VDSL，短距离内的最大下传速率可达55Mbps，上传速率可达19.2Mbps，甚至更高。从而它比ADSL传输对线路的保护器件的要求也更高，VDSL技术采用的是普通的电话线，其设备不可避免地会受到外界的电干扰，如雷电过载、ESD放电以及电源串扰等，因此必须针对可能造成破坏的过电压过电流对设备采取有效的保护措施。
비대칭수자용호회로(VDSL)기술채용료선진적조제기술，타능불간단련접，동시제공수거업무화화음업무통도，사용VDSL，단거리내적최대하전속솔가체55Mbps，상전속솔가체19.2Mbps，심지경고。종이타비ADSL전수대선로적보호기건적요구야경고，VDSL기술채용적시보통적전화선，기설비불가피면지회수도외계적전간우，여뇌전과재、ESD방전이급전원천우등，인차필수침대가능조성파배적과전압과전류대설비채취유효적보호조시。
Very-high-bit-rate Digital Subscriber loop (VDSL) technology has adopted advanced modulation technology. It can continuously connect and provide data service and voice service channels. Using VDSL, the maximum transfer rate in short distance can reach 55 Mbps, and the upload speed 19.2 Mbps, or even higher. So it has higher requirements on transmission line protector than ADSL transmission. VDSL technology uses ordinary telephone line and its equipment is inevitably affected by outside electrical interference, such as lightning overload, ESD discharge crosstalk and power supply and so on, so it is a must to take effective protective measures against overvoltage overcurrent which may cause damage to the equipment.