Supporting IPTV Application In IPDSLAM

In recent several years, the telecom operators' network capacity increases dramatically but benefits not so much correspondingly. The reason is that sole broadband data application has no adequate attraction to subscribers and traditional voice application has saturated already. To increase ARPU-Average Revenue Per Unit, VoD and multicast video application which will be based on Internet will be definitely the development trend. And IPTV as a newly emerging interactive multimedia service can provide additional revenue and competition capability to telecom operator utilizing existing broadband resources. What's more, it improves next generation network convergence effectively.In the access network segment, multiple technologies may be adopted by IPTV system, such as ADSL, VDSL or FTTH+LAN, in which as the mainly-used, it is important to support IPTV service for ADSL equipment. It is required to support end-to-end multicast in current network for video service, so that results lower bandwidth need for core and aggregation network. To earn limited bandwidth resources in access...