| Term | Definition |
|---|---|
| OA |
Office Automation
Hits: 347 |
| OAA |
Over Air Addressing
Hits: 298 |
| OC |
Optical Carrier
Hits: 329 |
| OC-12 |
655 Mb/s
Hits: 345 |
| OC-3 |
150 Mb/s
Hits: 322 |
| OC-48 |
2.4 Gb/s
Hits: 312 |
| OC-N |
Optical Carrier - N
Hits: 269 |
| OCC |
Other Common Carrier
Hits: 336 |
| OCU |
Office Channel Unit
Hits: 336 |
| OCU-DP |
Office Channel Unit - Data Port
Hits: 345 |
| ODI |
Open Data-link Interface
Hits: 330 |
| OEM |
Original Equipment Manufacture
Hits: 334 |
| OFDM |
Orthogonal Frequency Division Multiplexing
Hits: 331 |
| OFDMA |
Orthogonal Frequency Division Multiple Access
Hits: 285 |
| OFS |
Operational Fixed Station
Hits: 296 |
| OIRT |
Organisation International de Radiodiffusion et Television
Hits: 322 |
| OMT |
Orthognal Mode Transducer
Hits: 352 |
| OMUX |
Output Multiplexer
Hits: 300 |
| ONA |
Open Network Architecture
Hits: 290 |
| ONU |
Optical Network Units
Hits: 308 |
| OOF |
Out Of Frame
Hits: 296 |
| OOK |
On Off Keying
Hits: 308 |
| OOP |
Object Oriented Programming
Hits: 320 |
| OOS |
Out Of Service
Hits: 320 |
| OPGW |
overhead Optical Ground Wave
Hits: 319 |
| OPX |
Off Premises Extension
Hits: 285 |
| OQPSK |
Offset Quadrature Phase Shift Keying
Hits: 352 |
| ORL |
Optical Return Loss
Hits: 288 |
| OSC |
Oscillator
Hits: 343 |
| OSD |
On Screen Display
Hits: 330 |
| OSI |
Open Systems Interconnect
Hits: 337 |
| OSPF |
Open Shortest Path First
Hits: 306 |
| OSS |
Operations Support System
Hits: 286 |
| OTDR |
Optical Time Domain Reflectometer
Hits: 305 |
| OTG |
On Time Guarantee
Hits: 355 |
| OTN |
Optical Transmission Nodes
Hits: 319 |
| OTP |
One Time Programmable
Hits: 313 |
| OTS |
Orbital Test Satellite
Hits: 311 |
| OWF |
Optimum Working Frequency
Hits: 330 |
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Communications House , 41a Market Street, Watford, Herts, WD18 0PN.