Glossary

Term	Main definition
OA	Office Automation Hits - 810
OAA	Over Air Addressing Hits - 766
OC	Optical Carrier Hits - 786
OC-12	655 Mb/s Hits - 773
OC-3	150 Mb/s Hits - 751
OC-48	2.4 Gb/s Hits - 746
OC-N	Optical Carrier - N Hits - 728
OCC	Other Common Carrier Hits - 794
OCU	Office Channel Unit Hits - 818
OCU-DP	Office Channel Unit - Data Port Hits - 852
ODI	Open Data-link Interface Hits - 780
OEM	Original Equipment Manufacture Hits - 777
OFDM	Orthogonal Frequency Division Multiplexing Hits - 800
OFDMA	Orthogonal Frequency Division Multiple Access Hits - 709
OFS	Operational Fixed Station Hits - 764
OIRT	Organisation International de Radiodiffusion et Television Hits - 795
OMT	Orthognal Mode Transducer Hits - 820
OMUX	Output Multiplexer Hits - 732
ONA	Open Network Architecture Hits - 768
ONU	Optical Network Units Hits - 745
OOF	Out Of Frame Hits - 733
OOK	On Off Keying Hits - 777
OOP	Object Oriented Programming Hits - 758
OOS	Out Of Service Hits - 771
OPGW	overhead Optical Ground Wave Hits - 752
OPX	Off Premises Extension Hits - 742
OQPSK	Offset Quadrature Phase Shift Keying Hits - 783
ORL	Optical Return Loss Hits - 722
OSC	Oscillator Hits - 774
OSD	On Screen Display Hits - 773
OSI	Open Systems Interconnect Hits - 801
OSPF	Open Shortest Path First Hits - 741
OSS	Operations Support System Hits - 725
OTDR	Optical Time Domain Reflectometer Hits - 757
OTG	On Time Guarantee Hits - 791
OTN	Optical Transmission Nodes Hits - 751
OTP	One Time Programmable Hits - 765
OTS	Orbital Test Satellite Hits - 758
OWF	Optimum Working Frequency Hits - 784