Filter
Top Products
Glossary-13000-A2-GA31-80 December 1994
Glossary
ACCULINK
An AT&T product family and a registered trademark.
ACCUNET Spectrum of
Digital Services (ASDS)
An AT&T network service offering the alternatives of fractional T1, 9.6, 56 or
64 kbps (clear channel) digital, and analog access to a digital core network.
Advanced Diagnostic protocol
(ADp)
The network management protocol used by the COMSPHERE 6700 Series NMS
and 6800 Series NMS. It provides diagnostic communication for the network.
Auxiliary Backplane An 8-slot backplane that fits over one half of the open section of the 3000 Series
Carrier. This is a passive assembly that provides interconnect capability between
3151 CSUs and 3161 DSU/CSUs and provides all interface connectors.
backbone network The primary route from a control DSU or modem to its first tributary when the
communications network contains extended controls.
backplane A common bus at the rear of the COMSPHERE 3000 Series Carrier connecting
each circuit card slot to the SDCP and/or SDU. It also distributes low-voltage ac
power to each slot.
carrier The rack mounting that contains 17 slots: 1 control slot and 16 circuit card slots.
carrier-mounted A DSU or modem that is designed for and is installed in a COMSPHERE
3000 Series Carrier and is used at central-site operations. Up to 16 DSUs or
modems can be installed per carrier, with 6 carriers per cabinet.
CCITT The International Consultative Committee for Telegraphy and Telephony, a
committee of the International Telecommunication Union (ITU).
circuit pack lock A screw lock tab installed over a circuit card’s latch release tab to prevent the unit
from being removed without a tool. It is used on SDUs, DSUs, dial/lease modems,
and filler panels.
COMSPHERE
An AT&T product family and registered trademark.
connector module Used with modular DSU-TDM (or DSU-MCMP) circuit cards. A connector module
is installed onto the rear of the COMSPHERE 3000 Series Carrier. It contains six
DB25 connectors and one 26-pin high-density D-type connector. It functions as an
interface between the modular circuit cards and DTEs.
control A DSU or modem that is, for diagnostic purposes, at the logical head of a
hierarchical network. There is only one control per link.