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List of Acronyms
324
Acronym
NLOS
NLPID
NLRI
NNHOP
NNI
Node B
NSAP
NSP
NSSA
NTP
NTR
OADM
OAM
OAMPDU
OC3
OIF
OLT
ONT
OOB
OPX
ORF
OS
OSI
OSINLCP
OSPF
Table 50: Acronyms (Continued)
Expansion
non-line-of-sight
network level protocol identifier
network layer reachability information
next next-hop
network-to-network interface
similar to BTS but used in 3G networks — term is used in
UMTS (3G systems) while BTS is used in GSM (2G systems)
network service access point
native service processing
not-so-stubby area
network time protocol
network timing reference
optical add/drop multiplexer
operations, administration, and maintenance
OAM protocol data units
optical carrier level 3
outgoing interface
optical line termination
optical network terminal
out-of-band
off premises extension
outbound route filtering
operating system
Open Systems Interconnection (reference model)
OSI Network Layer Control Protocol
open shortest path first
7705 SAR OS System Management Guide
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