论文部分内容阅读
以太网接入方式通常是指FTTx+LAN,即光纤到小区、双绞线局域网方式入户。这是一种带有发展中国家特色的宽带接入方式,因为在发达国家中,中产阶层一般是不住这种集中式的公寓楼的。我国的城市人口几乎80％以上的人群居住在公寓单元套房中,各居民小区相对集中,因此当光纤铺设到小区然后再到楼之后,剩下的一百米正是以太网通过5类电缆能够达到的距离。这时,局域网接入方式在用户端的平均成本(网卡和相应的端口)显而易见要比ADSL和Cable Modem方式下需要购置的设备成
Ethernet access usually refers to FTTx + LAN, that is, fiber to the district, twisted pair LAN home. This is a form of broadband access with the characteristics of developing countries, because in the developed countries, the middle class generally can not live in a centralized apartment building. Almost 80% of China’s urban population live in apartments and apartment suites. Each residential area is relatively concentrated. Therefore, when the optical fiber is deployed to a residential area and then to the building, the remaining 100 meters are Ethernet cables Reached distance. At this time, LAN access methods in the average cost of the client (NIC and the corresponding port) Obviously ADSL and Cable Modem than the need to purchase equipment into