Wireless routers will allow you to share an internet access among many computers and it also supports easy networking without the hassle of the 
complicated wires. The new D-Link DSL-2640B ADSL2+ Wireless-G Router also does the same. This device looks compact and stylish giving you the required connectivity that you need and can be connected to your system externally.
The connectivity technology used in this device is both wireless and wired. This means that in fact wireless routers are wired routers with wired access points built in that allows you to have wired and/or wireless connectivity simultaneously. There are 4 port integrated switch in the device and the frequency band supported is 2.4 GHz.
Though compact in its looks, this new wireless router from D-Link has a weight of just 318 grams and its width is 19.6 cm, its depth is 14.7 cm and its height is just 3.3 cm. The status indicators that this router supports include port status and power status. The aerial integrated in the D-Link DSL-2640B ADSL2+ Wireless-G Router is an Omni-directional aerial.
Special features
• Firewall protection
• DMZ port
• Dynamic IP address assignment
• DHCP support
• NAT support
• Stateful Packet Inspection (SPI)
• DoS attack prevention
• Packet filtering
• Dynamic DNS server
• MAC address filtering
• VPN passthrough
• Wireless Distribution System (WDS) support
• SNTP support
• Quality of Service (QoS)
Interfaces Supported
• 8 x network – Ethernet 10Base-T/100Base-TX – RJ-45
• 1 x modem – ADSL2+ – RJ-11 ( WAN )
The protocols supported
Data Link Protocol
• Ethernet
• Fast Ethernet
• IEEE 802.11b
• IEEE 802.11g
Transport Protocol
• PPTP
• L2TP
• ICMP/IP
• IPSec
• PPPoE
• PPPoA
Routing Protocol
• RIP
• RIP-2
• Static IP routing
Among the other protocols supported Ethernet acts as the Switching Protocol and the Remote Management Protocol is HTTP. The Spread Spectrum Method supported is OFDM and DSSS. This DSL modem supports Digital Signalling Protocols like ADSL, ADSL2 and ADSL2+ and the maximum transfer rate is 24 Mbps.
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