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List of terms
Nortel Multiservice Switch 7400/15000/20000
Terminology
NN10600-005 7.2S1 Standard
PCR7.2 and up March 2006
Copyright © 2006, Nortel Nortel Confidential
Meridian 1 ISDN Primary Rate Interface (MCDN)
A common-channel signaling protocol intended for use between members of
the Nortel Networks Meridian family of Private Telecommunication Network
Exchanges. The signaling information is carried through time slot 16 of a
2.048 Mbit/s digital transmission system. Similarly, it is carried through time
slot 23 of a 1.544 Mbit/s digital transmission system.
metric
A metric is a number that is used to represent the attractiveness (a smaller
metric is more attractive) of a link or LinkGroup to a routing protocol. Some of
the metrics used by Nortel Multiservice Switch are
• cost: a user-definable value
• delay: measured by the system (a lower metric represents a lower delay)
• throughput: measured by the system (higher speed links have lower
metrics)
metropolitan area network (MAN)
A network that spans a city. It is bigger than a local area network (LAN) but
smaller than a wide area network (WAN).
MG
See media gateway (MG) (page 80).
MGC
See media gateway controller (MGC) (page 80).
MIB
See management information base (MIB) (page 79).
MIB view
A specific set of components in the MIB hierarchy that is created from subsets
of included and excluded subtrees.
MID
See module identifier (MID) (page 82).
minimum cell rate (MCR)
A measure of the minimum useful data rate for the given ATM UBR service
category. This term is used interchangeably with MDCR.
minimum desired cell rate (MDCR)
A measure of the minimum useful data rate for the given ATM UBR service
category. This term is used interchangeably with MCR.