Asus GigaX User Manual page 132

TFTP
Trunk
TTL
twisted pair
upstream
VLAN
WAN
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Trivial File Transfer Protocol
A protocol for file transfers, TFTP is easier to use than File
Transfer Protocol (FTP) but not as capable or secure.
Two or more ports are combined as one virtual port, also called
as Link Aggregation.
Time To Live
A field in an IP packet that limits the life span of that packet.
Originally meant as a time duration, the TTL is usually
represented instead as a maximum hop count; each router that
receives a packet decrements this field by one. When the TTL
reaches zero, the packet is discarded.
The ordinary copper telephone wiring long used by telephone
companies. It contains one or more wire pairs twisted together to
reduce inductance and noise. Each telephone line uses one pair.
In homes, it is most often installed with two pairs. For Ethernet
LANs, a higher grade called Category 3 (CAT 3) is used for
10BASE-T networks, and an even higher grade called Category
5 (CAT 5) is used for 100BASE-T networks. See also 10BASE-T,
100BASE-T, Ethernet.
The direction of data transmission from the user to the Internet.
Virtual Local Area Network
Wide Area Network
Any network spread over a large geographical area, such as a
country or continent. With respect to the SL-1000, WAN refers to
the Internet.