With the evolution of the broadband network technology, the service of the high-bandwidth multimedia communication such as IPTV becomes popular home multimedia and entertainment. IPTV features the media on demand, high quality of service, and instant interaction, rather different from streaming content. These features require support from high quality CPE equipment, physical line, and service platform. How the Quality-of-Service of MOD service can be leveled up is now a crucial issue. Owing to the concentration on the network popularity and broadband evolution, more than 4.32 million broadband users, including 1.47 million 8M bandwidth and 0.5 million MOD subscribers, have adopted the xDSL connection of Chunghwa Telecom by August 2008. In order to cater to the demand of the high quality service from a huge number of subscribers, a set of testing tools detecting user-side broadband obstacles have been developed. The customer network engineers can process the broadband physical layer quality test with their laptops. Due to the bearing of the MOD service on the broadband physical layer, the tools provide the tests of physical layer, ATM layer and IP layer traffic for broadband communication protocol, helping the engineers locate the obstacles immediately. In this article, the features of the tools are described in detail. Its relevant researches have been widely applied to MOD and xDSL user-side broadband network tests in Chunghwa telecom, proving its practicability.
ADSL VDSL MOD IPTV CPE