Octal-Port DMT ATU-C Line Card
Glossary
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Cisco IOS Release 12.1(6)DA
DDTS
Cisco Distributed Defect Tracking System.
digital signal level 3
See DS3.
Distributed Defect
Tracking System
See DDTS.
DS3
digital signal level 3. Framing specification used for transmitting digital signals at 44.736 Mbps on a
T3 facility.
DSLAM
Digital Subscriber Line Access Multiplexer. Concentrates and multiplexes digital subscriber line
signals at the telephone service provider location to the broadband wide area network.
Replaces ADSLAM.
F
frame
A packet as it is transmitted over a serial line. The term derives from character oriented protocols
where special start-of-frame and end-of-frame characters were added when transmitting packets.
FTP
File Transfer Protocol. The Internet protocol (and program) used to transfer files between hosts.
G
G.992.2
The ITU standard for line coding and framing for splitterless, reduced spectrum ADSL. Also known
as G.lite.
G.994.1
The ITU standard for signalling, identification, and negotiation between broadband systems; an
integral part of G.dmt and G.lite. Also known as G.hs.
G.997.1
The ITU standard for performance monitoring on DMT access technologies.
G.dmt
Pseudonym for G.992.1.
G.h
s
Pseudonym for G.994.1. HandShake (hs)
G.lite
Pseudonym for G.992.2
H
Handshake
Part of the procedure to set up a data communications link. The handshake can be part of the
protocol itself or an introductory process. The computers wishing to talk to each other set out the
conditions they can operate under. Sometimes, the handshake is just a warning that a communication
is imminent.
I
IP
Internet Protocol. The network layer protocol for the Internet Protocol suite.
