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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
XNTP
A Nortel Multiservice Switch system feature that controls the setting of
network time.
xPD
A generic term for any of a number of packet discard algorithms (for example,
EPD, PPD, WRED).
Y-Protection
A Y-protection configuration enables two matched fiber optical FPs to have
hitless equipment protection (EP) and hitless software migration (HSM) while
the far-end interface does not support automatic protection switching (APS) or
multiplex section protection (MSP). The capability is achieved through
software control of hardware lasers firing through custom-made cable
assemblies that split the transmit and receive signals to and from the pair of
FPs to a single interface.
Y-splitter cable
A Y-splitter cable is a fiber optical cable with each transmit and receive fiber
physically split into two. A pair of duplex single-mode (SM) Y-splitter cables is
required for each pair of ports on a pair of Nortel Multiservice Switch
15000 or
Multiservice Switch
20000 node function processors (dual FPs) that are
configured in software to use Y-protection.