Up to 8Mbps Speed
The ADSL interface features G.dmt modulation for speeds of up to 8 Mbps downstream and 640 Kbps upstream. G.lite is also supported, allowing up to 1.5 Mbps downstream and 512 Kbps upstream. G.lite is sufficient for most Internet applications today, and has the advantage of not requiring the installation of a splitter at the subscriber end. The ADSL interface auto-senses the connection type and auto-negotiates the best modulation scheme, G.dmt or G.lite using the G.hs (handshake) protocol.
Uses Existing Telephone Line
The ADSL modem operates over the existing telephone wire and does not require new transmission media such as fiber-optic cabling. ADSL makes possible high-speed multimedia services, Internet access, video conferencing and remote networking for all connected computers.
No More Busy Signals
ADSL service, once installed, is always on. There is no need to dial the ISP or corporate LAN at the other end.
Maximum Utilization of Resources
Regular telephone service uses only a tiny portion of the actualcapacity of a conventional telephone line, while ADSL uses the remaining bandwidth for high-speed data transfer. This is accomplished by setting different frequency channels for different functions, so that voice communication occurs at thelower end of the frequency spectrum, while data transmission takes place at higher frequencies.
IP Routing and VPN
The DSL-500 ADSL router supports IP packet routing over the WAN, in addition to transparent bridging. IP routing gives you the configuration capability to separate subnets and limit broadcast domains to improve traffic conditions over the WAN and increase security. Virtual Private Networking (VPN) secures communications over the Internet making it comparable to the security offered on private networks and leased lines.
NAT and DHCP Support
The router provides cost-saving Internet functions like NAT and DHCP. Network Address Translator (NAT) allows multiple LAN users to share a single ISP account. DHCP automatically assigns an IP
address to each LAN user to simplify the logon operation.