Currently, broadband access technologies include DSL, Ethernet, HPNA, HFC, and broadband wireless access, etc., DSL and Ethernet access is the most used means of access, you can give full play to the traditional copper pair of Stranded role of technology as broadband DSL access network access to end users as a mainstream technology in many DSL technologies, ADSL technology is the current star, but rather emerging from behind EDSL technology trend.
EDSL (Ethernet Over VDSL) is the VDSL (Very high-speed Digital Subscriber Line) technology, one of ordinary telephone copper wire on the symmetric uplink and downlink speed reached 12.5Mbps, the maximum transmission distance of up to 1.5 km , to allow the widespread use of standard Ethernet network, significantly reducing implementation costs. It can greatly improve the speed of Internet access services to provide a local area network between the different speed connections, both to support narrowband voice services, but also support video on demand, video conferencing, Internet browsing, e-commerce and other broadband data services, greatly enhance the utilization of traditional networks, as operators and service providers to create exciting business opportunities.
EDSL advantages mainly from three factors:
Choice of network status
In 2001, the 600 million users new ports network, mainly ADSL and Ethernet access, but the actual opening of less than 10%, such a low application rate of investment risk needs to bring the network to choose a more flexible , low-cost, end to end solution. China nearly 200,000,000 pairs of the existing twisted pair resources and the majority of users currently difficult to bring in new transmission medium of reality, so we have to do something in the twisted pair on.
Business development options
At present China's telecommunications business is mainly analog phones, while the rapid development of broadband data services are also not stop at non-symmetry operations that help to Jiaohu Shi Tuxiangzhuansong and VPN applications as represented by high speed data access start Huode symmetry application, in the network construction is necessary to consider the needs of business development, EDSL combination of ADSL and Ethernet services features, good to meet all business needs.
The choice of technology
Ethernet technology has been relatively mature, pure Ethernet mode (FTTx + LAN) security, maintainability, transmission distance and the ADSL, thread and other issues will restrict their further development. EDSL combination of ADSL and Ethernet technology and evade its technical deficiencies, has opened higher, enabling carrier-grade operation and management advantages.
ZXEDSL is ZTE ADSL and Ethernet switches in the R & D, based on advanced EDSL technology, the development of Ethernet integrated access platform.
ZXEDSL system in the metro access layer, with the L2 wire-speed switching and multiple access capabilities, through 100M/1000M Ethernet optical interfaces or ATM optical interfaces into the tandem layer, can be connected to the routing switch or UAS (integrated Access Server) and other aggregation layer and core layer device.
ZXEDSL by the central office equipment (DSLAM) and customer premise equipment (MODEN) composed of two parts. The current central office equipment ZXEDSL 8010 (large capacity) and ZXEDSL 8011 (small capacity) in two models, customer premise equipment has ZXEDSL 820.