PSTN
pulse code modulation
Primary Rate Interface
private automatic branch exchange
dynamic port numbers
PPP
predictive dialer
poison reverse
port
port 80
plesiochronous
permanent virtual circuit
petabit
phantom dialing
phase-shift keying
photonic network
path
PCS
packet
Packet-Level Procedure
PacketHound
Personal Access Communications System
PAIR
Parlay
out-of-band signaling
Optical Carrier levels
optoelectronics
optoisolator
OA&M
OC-768
one-armed router
online
offline
nslookup
port number
NWay
Number Translation Service
NNTP
non-geographic number
node
null modem
NSFNET
network perimeter
Network Service Access Point
network access server
Network Address Translation
network computer
network interface unit
network PC
networking chip
neural network
Network Time Protocol
networking
Next Hop Resolution Protocol
NIC handle
NIS
NetBIOS
NetPC
Network layer
network interface card
Network Job Entry
netsplit
NetWare
network service provider
network operating system
network terminator 1
network
NAK
NBMA
Novell Directory Services
near-end crosstalk
modem doubling
modem error-correcting protocols
modulation
multiplexing
Molex
MFSK
microwave
mil
MILNET
loading coil
local loop
loopback
thin client
last-mile technology
line information database
LMDS
local access and transport area
LEC
LANDesk Client Manager
Local Number Portability
Location Routing Number
layer 2
Link Control Protocol
lambda switching
Long-haul optics
Logical Link Control layer
line doubler
LAN party
KVM switch


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