Verilink Access Manager 2000 (896-502037-001) Product Manual - Manual (Page 340)

A-8 Access Manager 2000 Manual
DS-1 Equipmen The customers DS-1 data transmission equipment connected to the
CSU of a NCC 2020 or TAC 2010.
DTE See Data Terminal Equipment.
DTR Data Terminal Ready.
Dual-Line Shelf A dual-line shelf is a component of the Access System 2000 and is
used to house two or less plug-in modules such as NCCs, TACs, TIUs,
and DIUs. The DLS also provides three buses and several input and
output jacks for module interconnection and usability.
E
EFS See Error-Free Second.
EIA Electronic Industries Association, see RS-XX specifications under the
alphabetical listing in this glossary.
ELB See Equipment Loopback.
Electronic
Programmable
Read-only
Memory An EPROM is a non-volatile memory chip which can be erased by
exposing the chip to ultraviolet light. It may then be reprogrammed.
EPROM See Electronic Programmable Read-only Memory.
Equipment Any type of equipment that is connected to the node controller, TAC,
TIU, or DIU.
Equipment
Loopback An ELB is a loop which sends the signal from the equipment back to
the equipment. When the ELB is in affect, the equipment signal is not
sent out to the line and does not pass through the CSU circuitry.
Equipment Low
Density Second A second during which pulse stuffing or a keep-alive signal was applied
to the network.
EQP See Equipment.
EQPT See Equipment.
Errored Second A second with one or more ESF error events.
Term Definition