Terms and Abbreviations: O
O
O&O
owned-and-operated (station)
OAR
original aspect ratio
OB
outside broadcast
OBV
outside broadcast vehicle
OCAP
OpenCable Applications Platform
note developed by CableLabs
OEM
original equipment manufacturer/manufacturing
OET
Office of Engineering & Technology
OFDM
orthogonal frequency-division multiplexing
ohm, O
a unit of electrical resistance
OLED
organic LED
OLT
optical line termination/terminal
OMA
Open Mobile Alliance
OMF
Avid’s Open Media Framework
OMT
object modeling technique
OMVC
Open Mobile Video Coalition
OP
Operational Pattern (standard for MXF)
OPEX
operating expenses
O-ring
flexible coaxial seal used in fittings
OS
operating system
OSI 1) Open Systems Interconnection
2) Open Source Initiative
3) Open Storage Initiative (Avid)
OSS
operational support systems
OTA
over the air
OTT
over the top; service used over a network that is not offered by that operator and requires no business or technology affiliations with that operator, e.g., an over-the-top video service for Internet-connected TVs
OVS
open video system
