Verilink Access Manager 2000 (896-502037-001) Product Manual - Manual (Page 338)

A-6 Access Manager 2000 Manual
D
D4 See Superframe.
Data Digitally represented information which includes voice, text, video, or
facsimile.
Data Bus (1) A common connection using one or more conductors by which data
and timing information are conveyed between a related group of
devices (e.g., NCC, DIU, TIU).
(2) The means by which data and timing information are conveyed
between a CSU and associated DIUs. The backplane of each system
shelf provides three data buses (or 7 data buses with the MLS 2200)
that can be assigned to individual CSUs for DIU interfaces.
Data Channel The internal circuit path through the DIU, including the data equipment
and network assigned time slots.
Data Circuit-
terminating
Equipment Data Circuit Terminating Equipment (incorrectly, data communication
equipment): Equipment that is either part of the network, an access
point to the network, a network node, or equipment at which the
network circuit terminates. DIU 2140 / DIM 2232 or possibly HLM
2035, depending on its configuration.
Data Equipment The customer’s data equipment that is connected to a DIU 2130 or DIU
2140 for network transmission through an NCC or TAC for
transmission over a T1 network.
Data Interface
Module A backplane interface module of a data interface Unit (DIU) in Access
System 2000 which allows V.35 and other wiring formats to be
connected from the customers equipment into the DIU.
Data Interface Unit A device that interfaces T1 data equipment ports at the customer’s
premises with a NCC or TAC over a T1 network.
Data Link See ESF Data Link.
Data Port The physical connection on the DIU that allows data from the data
equipment to enter the DIU.
Data Service Unit A DSU is a multiplexer that apportions the 24 channels of a DS-1 (T1)
(not necessarily of equal size).
Term Definition