User`s guide

Glossary D-4
RFC 1483 A standard method for linking different devices across networks and which assures
“interoperability”.
RJ-11 A connector/socket for two pairs (four wires) of twisted pair cables that is used
primarily to connect telephone equipment.
Router A hardware device connecting two separately functional networks that use the
same or different protocols. Routers look at the destination addresses on data
packets, and then decide which route to send them on.
Subnet Mask A 32-bit string of a TCP/IP address — one part of which is the network address and
another part of which is the host address. A Subnet Mask is usually represented in
dotted-decimal notation, for example, 255.255.255.0.
TCP/IP Transmission Control Protocol/Internet Protocol. A suite of communication
protocols that is used by computers or networking devices on the Internet so that
they can communicate with each other. TCP/IP uses several protocols, the two
main being TCP and IP.
VPI Virtual Path Identifier — A numerical value assigned by your Internet Service
Provider to your DSL device to ensure proper connection with the DSL equipment
at the telephone company’s office.
VCI Virtual Channel Identifier — A numerical value assigned by your Internet Service
Provider to your DSL device. VCI goes hand in hand with VPI to ensure connection
with your Internet Service Provider’s equipment.
WAN Wide Area Network — A computer network that spans a relatively large
geographical area. Typically, a WAN consists of two or more LANs.