Octal-Port DMT ATU-C Line Card
Glossary
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Cisco IOS Release 12.1(6)DA
router
A system responsible for making decisions about which of several paths network (or Internet) traffic
will follow. To do this, it uses a routing protocol to gain information about the network and algorithms
to choose the best route based on several criteria known as “routing metrics.” See also bridge.
routing table
Information stored within a router that contains network path and status information. It is used to
select the most appropriate route to forward information along.
S
Simple Network
Management
Protocol
See SNMP.
slot
A numbered location within a chassis capable of housing a module.
SNMP
Simple Network Management Protocol. The network management protocol of choice for
TCP/IP-based internets.
SVC
Stands for switched virtual connection. A temporary virtual connection between two users.
T
TCP
Transmission Control Protocol. The major transport protocol in the Internet suite of protocols
providing reliable, connection-oriented full-duplex streams.
T1.413
The ANSI standard for line coding and framing for full rate ADSL.
Telnet
The virtual terminal protocol in the Internet suite of protocols. Allows users of one host to log into a
remote host and act as normal terminal users of that host.
TFTP
Trivial File Transfer Protocol. A simple file transfer protocol (a simplified version of FTP) that is often
used to boot diskless workstations and other network devices such as routers over a network (typically
a LAN). Has no password security.
training
The procedure used by the ATU-C and ATU-R to establish an end-to-end ADSL connection.
training mode
Characteristic of a router that allows it to use RADSL technology to adjust its line speed according to
noise conditions on the transmission line.
Transmission
Control Protocol
See TCP.
Trivial File Transfer
Protocol
See TFTP.
trellis encoding
A channel coding technique which provides forward error correction capability.
twisted pair
Two insulated copper wires twisted together with the twists or lays varied in length to reduce potential
signal interference between the pairs.