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O object
(EN)
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O-Mass optical magnetic storage
(EN)
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O-PNNI optical private network to network interface (EN)
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O2O online to offline
(EN)
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OA optical amplifier (fiber optics)
(EN)
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OA office automation (EN)
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OAA open automotive alliance (EN)
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OABR open alliance broadR reach (automotive)
(EN)
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OAD object management and definitions (Internet) (EN)
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OAD Optische Anschlussdose
(DE)
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OADC originator address code (EN)
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OADM optical add/drop multiplexer (OTH)
(EN)
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OAEP optimal asymmetric encryption padding (EN)
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OAF optical attenuator fiber
(EN)
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OAF origin address field (EN)
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OAG open application group
(EN)
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OAI open application interface (PBX) (EN)
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OAI open archives initiative (EN)
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OAIS open archival information system
(EN)
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OAM operation, administration, and maintenance
(EN)
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OAM&P operation, administration, maintenance, and provisioning (NM) (EN)
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OAMC operation, administration, and maintenance center (EN)
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OAN optical access network (MAN)
(EN)
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OAP outdoor access point (PLC)
(EN)
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OAP one step approval procedure (EN)
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OAS obstacle avoidance system (drone) (EN)
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OAS optical access switch (AN) (EN)
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OAS overtaking assistant system (DAS)
(EN)
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OASIS online application interactive software
(EN)
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OASIS organization for the advancement of structured information standards
(EN)
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OAsk Ortsanschlusskabel (DE)
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OAsl Ortsanschlussleitung
(DE)
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OATH open authentication reference architecture (EN)
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OATS open area test site (EMI) (EN)
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OAuth open authentication
(EN)
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oAW openArchitectureWare
(EN)
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