Glossary Technology evolves at a rapid-fire pace. That’s why we’ve built an easy-to-use glossary to help you better understand the terms, technologies and trends that impact your business. Show only animated 0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z OADM OAM OAM&P OBSAI OC OC-3 OccBW OCh OCI Octet ODN ODU OFC OFDM OFDMA OFM OH OHP OLA OLn OLP OLS OLT OLTS OMS ONT ONU OOF OOM OOM1 OOM2 OOSM Open Base Station Architecture Initiative (OBSAI) Open Fiber Control (OFC) Open Systems Interconnection (OSI) Operating Expenses (OPEX) Operations, Administration and Management (OAM) OPEX OPM OPNfr OPNyr OPNyx OPNyy OpS Optical Add/Drop Multiplexer (OADM) Optical Attenuator (OLA) Optical Carrier, Level 3 (OC-3) Optical Fiber Optical Fiber Multimeter (OFM) Optical Internetworking Forum (OIF) Optical Light Source Optical Line Terminal (OLT) Optical Network Optical Network Terminal (ONT) Optical Network Unit (ONU) Optical Power Meter (OPM) Optical Return Loss (ORL) Optical Signal-to-Noise Ratio (OSNR) Optical Spectrum Analysis Optical Spectrum Analyzer (OSA) Optical Splitter Optical testing Optical Time-Domain Reflectometer (OTDR) Optical Transport Network (OTN) OPU Organizationally Unique Identifier (OUI) ORL ORR OSA OSC OSI OSNR OSP OTDR OTDR connectors or optical port OTL OTN OTS OTT OTU OUI OUT Outside Plant (OSP) Over-the-air (OTA) testing OX_ID
