Page 284 - Optical Switching And Networking Handbook

12_200023_Acronyms/Bates 1/17/01 10:10 AM Page 269

Acronyms 269

MSOH Multiplexer Overhead
MTP Message Transfer Part
NIC Network Interface Card
NID Network Interface Device
NIU Network Interface Unit
NMS Network Management System
NMP Network Management Protocol
NNI Network Node Interface
OADM Optical Add/Drop Multiplexer
OAM&P Operations, administration, maintenance, and
provisioning services
OBLSR Optical Bi-directional Line Switched Rings
OC Optical Carrier
OEO Optical to Electrical and Then Back to Optical Again
ONI Optical Network Interface
ONU Optical Network Unit
OSI Open Systems Interconnect
OSNR Optical Signal-to-Noise Ratio
OTDM Optical Time Division Multiplexing
O-VPN Optical Virtual Private Network
OXC Optical cross-connect
PDH Plesiochronous Digital Hierarchy
PM Phase Modulation
PoF Plastic Optical Fiber
POH Path Overhead
PISK Polarity Modulation or Polarity Inversion Shift Keying
PON Passive Optical Network
POP Point-of-presence
POTS Plain Old Telephone Service
PSK Phase Shift Keying
PTE Path Terminating Equipment
PTTs Post Telephone and Telegraph companies
QAM Quadrature Amplitude Modulation