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Appendix E, Glossary
Glossary Letter E
DTE
E
E1
end device
end user
ES
ethernet
F
facilities
far end
FCC
FDL
G
gateway
H
host computer
I
idle code
in-band
IP
E-4
Data terminal equipment. The end-user terminal or computer that plugs into the
termination point (DCE) of a communications circuit. The main difference
between the DCE and the DTE is that pins two and three are reversed.
Transmission rates of 2.048 Mbps are available on T1 communication lines. See
also T1.
The ultimate source or destination of data flowing through a network (sometimes
referred to as DTE).
Subscriber who uses (rather than provides) telecommunications services.
Errored seconds. A second with one or more coding violations (CVs).
Transmission protocol for packet-switching LANs.
The equipment used by carriers to provide communication services.
The distant end to that being considered. Not the end where testing is being
carried out.
Federal Communications Commission. The U.S. federal agency responsible for
regulating interstate and international communications by radio, TV, wire, satel-
lite, and cable.
Facility datalink. FDL bits provide overhead communication between the terminal
equipment in ESF framing.
A device which enables information to be exchanged between two dissimilar
systems or networks.
The primary or controlling computer in a multiple computer operation.
In a T3 circuit, an idle code consists of a sequence of 1100 over the entire payload
bandwidth.
Signaling (dialing, loopbacks, management, configuration, etc.) over the same
channel used for data.
Internet protocol. A protocol which provides for transmitting blocks of data
between hosts identified by fixed-length addresses.
MX2800 STS-1 User Manual
61204659L1-1A
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