29 Appendix
ARGUS 152
375
MSA
Multiple source agreement
MTU
Maximum Transmission Unit
mV
pp
Millivolt peak-to-peak
N
n/a
not available
n/r
not received
n/u
not used
NAT
Network address translation
NGN
Next generation network
NIT
Network information table
NOK
Not OK
NP
Numbering plan
NSAP
Network service access point
NSF
Network specific facilities
NT
Network termination
NTBA
Network termination for ISDN basic rate access
NTR
Network timing reference
O
OAD
Origination address (1TR6)
OAM
Operation, Administration and Maintenance
OM
Omni mode
OoS
Out of Sequence
OSI
Open Systems Interconnection
OUI
Organizationally unique identifier
P
P/N
Part number
PABX
Private automatic branch exchange
PADI
PPPoE active discovery initiation
PADO
PPPoE active discovery offer
PADR
PPPoE active discovery request
PADS
PPPoE active discovery session confirmation
PADT
PPPoE active discovery termination
PAM
Pulse amplitude modulation
PAP
Password Authentication Protocol
PAT
Program association table
PC
Personal computer
PCR
Program clock reference
PD
Protocol discriminator
PDU
Protocol data unit
PE
Polyethylene
PESQ
Perceptual evaluation of speech quality (ITU-T P.862)