Nortel Networks 8600 manual Glossary, GL-1

Glossary

Backplane	A common bus at the rear of the HotWire 8600 DSLAM chassis connecting each DSL card
	to the MCC card for diagnostic and network management. It also distributes dc power to
	each slot.
Base Chassis	The HotWire 8600 DSLAM chassis in a multi-system configuration (stack) that contains the
	MCC card, which manages all of the DSL cards in the stack.
Central Office (CO)	The physical building where the class 5 switch is located and the local telephone service
	wiring is collected from a surrounding area.
Chassis	The rack mounting that contains an interface panel, internal fan module, backplane and
	three slots: one MCC card slot and two DSL card slots.
Downstream Data	The rate at which data flows from the central office platform DSL port to the Remote
Rates	Terminal Units (RTUs).
DSL	Digital Subscriber Line.
DSLAM	Digital Subscriber Line Access Multiplexer.
DSL Card	A circuit card that contains DSL ports.
EIA	Electronic Industries Association.
Fan Module	A component in the chassis that cools the circuit cards in the chassis.
Filler Plate	A plate that covers unused slots in the chassis. A slot that does not contain an MCC card
	or DSL card must be covered by a filler plate.
Interface Panel	The front panel of the Main Card. The ±48 Vdc terminal block, AC power connector (if
	chassis has the AC power option), and interface connectors are accessible from this front
	panel.
Internet Protocol (IP)	The TCP/IP standard protocol that defines the IP as a chassis of information passed
	across an Internet and provides the basis for packet delivery service. IP includes the ICMP
	control and error message protocol as an integral part. The entire protocol suite is often
	referred to as TCP/IP because TCP and IP are the two most fundamental protocols.
IP Address	Internet Protocol Address. A 32-bit address assigned to a host on a TCP/IP network. The
	address has a host component and a network component.
LAN	Local Area Network.
LED	Light-emitting diode. A light or status indicator on the chassis and the card faceplates that
	glows in response to the presence of a certain condition (e.g., a fan alarm).
Management	The set of variables a gateway running SNMP maintains. Standard, minimal MIBs have
Information Base	been defined, and vendors often have private-enterprise MIBs. In theory, any SNMP
(MIB)	manager can talk to any SNMP agent with a properly defined MIB. MIB-II refers to an
	extended management database that contains variables not shared by SNMP.
MCC Card	Management Communications Controller card. The MCC card is a powerful processor
	card that works in conjunction with an SNMP network management system, such as DCE
	Manager for HP OpenView, to gather operational status for each of the DSL cards in the
	chassis (or stack).
MIB II	MIB Release 2 is the current Internet-standard MIB.

8600-A2-GN20-20 October 1997 GL-1