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O Glossary
B-52 Centillion 1200N ATM Switch User Manual
NTP 297-8103-903
NT
Network Termination: Network Termination represents the termination point of a
Virtual Channel, Virtual Path, or Virtual Path/Virtual Channel at the UNI.
NTSC
National Television System Committee: An industry group that defines how
television signals are encoded and transmitted in the US.
Nucleus
The interior reference point of a logical node in the PNNI complex node
representation.
nx64K
This refers to a circuit bandwidth or speed provided by the aggregation of nx64
kbps channels (where n= integer > 1). The 64K or DS0 channel is the basic rate
provided by the T Carrier systems.
O
OAM
Operations Administration and Maintenance: A group of network management
functions that provide network fault indication, performance information, and data
and diagnosis functions.
Octet
A term for eight (8) bits that is sometimes used interchangeably with "byte" to mean
the same thing.
ODI
Open Data-Link Interface: This refers to Novell Incorporated, Open Data-Link
Interface Developer's Guide, March 20, 1992.
One Hop Set
A set of hosts which are one hop apart in terms of internetwork protocols TTLs
(TTL=0 -on the wire+).
OOF
Out of Frame. Refer to LOF.