Huawei HG655b User Manual page 35

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User Guide
Appendix
UDP
User Datagram Protocol
One of the TCP/IP suite of protocols for data transfer, which allows an application
program on one machine to send a datagram to an application program on another
machine.
VDSL
Very high-bit-rate Digital Subscriber Line
VDSL is a DSL technology providing faster data transmission over a single flat
untwisted or twisted pair of copper wires. These fast speeds mean that VDSL is capable
of supporting high bandwidth applications such as HDTV, as well as telephone services
(Voice over IP) and general Internet access, over a single connection. VDSL is deployed
over existing wiring used for POTS and lower-speed DSL connections. This standard
was approved by ITU in November 2001.
VDSL2
Very High Speed Digital Subscribe Line 2
VDSL2 is an access technology that exploits the existing infrastructure of copper wires
that were originally deployed for POTS. It can be deployed from central offices, from
fibre-fed cabinets located near the customer premises, or within buildings. In theory,
VDSL2 can achieve the highest transmission rates of 100 Mbit/s, and more perfectly
using the high-speed performance of short distance.
Virtual server
A virtual server allows you to direct incoming traffic from the Internet (identified by
protocol and external port) to an internal server with a private IP address on the LAN.
WAN
Wide Area Network
WAN usually refers to a network which covers a large geographical area, and uses
communications circuits to connect the intermediate nodes. A major factor impacting
WAN design and performance is a requirement that allows communications circuits to be
leased from telephone companies or other communications carriers.
WPA-PSK
Wi-Fi Protected Access-Pre Shared Key
WPA is an industry standard based on a subset of an early draft of 802.11i. WPA replaces
WEP's keying mechanism with a more robust system, called Temporal Key Integrity
Protocol (although TKIP is still based on RC4 encryption). WPA adds a strong message
integrity check and allows for authentication using 802.1X.
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