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OC optical carrier (Sonet)
(en)
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OCAL online cryptanalytic aid language
(en)
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OCB outgoing calls barred (ISDN)
(en)
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OCC open cloud consortium
(en)
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OCCI open cloud computing interface
(en)
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OCDM optical code division multiplexing
(en)
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OCF optical control factor (illumination)
(en)
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OCF open container format (EPUB)
(en)
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OCF open card framework (chipcard)
(en)
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OCh optical channel (OTH)
(en)
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OCIT open communication interface for traffic
(en)
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OCL object constraint language
(en)
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OCP overcurrent protection (digital power)
(en)
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OCPI open charge point interface (carging station)
(en)
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OCPP open charge point protocol (charge station)
(en)
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OCR optical character recognition
(en)
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OCS online charging system
(en)
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OCSP online certificate status protocol (PKI)
(en)
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OCV optical character verification
(en)
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OCV open circuit voltage
(en)
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OCX object control extension
(en)
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OCXO oven controlled crystal oscillator
(en)
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OD optical density
(en)
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OD on demand
(en)
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ODA open document architecture (OSI)
(en)
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ODAPI open database API
(en)
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ODB++ open database (CAD/CAM)
(en)
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ODBC open database connectivity
(en)
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ODC on demand computing
(en)
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ODETTE organization for data exchange by teletransmission in Europe
(en)
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ODF optical distribution frame (optics)
(en)
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ODF open document format
(en)
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ODI open datalink interface (Novell)
(en)
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ODIF open document interchange format (OSI)
(en)
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ODL object definition language (database)
(en)
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ODL observation of daily living (mHealth)
(en)
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ODMA open document management API
(en)
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ODMG object database management group
(en)
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ODN optical distribution network (DSL)
(en)
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ODP open directory project (DMOZ)
(en)
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ODP open distributed processing
(en)
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ODS operational data store (data warehouse)
(en)
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ODS open data service (ASAM)
(en)
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ODSI optical domain service interconnect
(en)
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ODT on die termination (memory chip)
(en)
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ODU optical data unit (SDH)
(en)
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ODU outdoor unit (sat. com.)
(en)
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ODVA open DeviceNet vendor association (automation)
(en)
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ODX open diagnostic data exchange (automotive)
(en)
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