Here are the most common telecom acronyms starting with O from the world of computer networking.
← Back to Full Telecom Acronyms| O&M | Operations and Maintenance |
| O/W | Orderwire (NOCC) |
| OA | Office Automation Data |
| OA | Operator Assisted |
| OA | Operator Attached (signal) |
| OA | Order Administration |
| OA&M | Operations, Administration, and Maintenance |
| OAM | Once a Month |
| OAM&P | Operations, Administration, Maintenance and Provisioning |
| OAS | Organization of American States |
| OATS | Order Administration Tracking System |
| OAU | Office Alarm Unit |
| OBR | Optical Bar Code |
| OC | Operations Center |
| OC | Operator Centralization |
| OCC | Other Common Carrier |
| OCD | Operations Capability Demonstration |
| OCL | Operation Control Language |
| OCLC | Ohio College Library Center |
| OCLID | Outgoing Called Line Identification |
| OCR | Optical Character Reading (or Recognition) |
| OCS | Order Coordination Service |
| OCU | Office Channel Unit |
| ODA | Office Data Administration |
| ODA | Office Documentation Architecture |
| ODBE | Office Data Base Editor |
| ODD | Office Dependent Data |
| ODE | Ordinary Differential Equation |
| ODEN | Outgoing Data Enable (signal) |
| OE | Office Equipment |
| OE | Order Entry |
| OE/SOTS | Order Entry & Svc Order Tracking System |
| OECD | Organization for Economic Cooperation and Development |
| OEIC | Optoelectronic Integrated Circuit |
| OEM | Original Equipment Manufacturer |
| OFA | Operations Facility Assignment |
| OFPP | Office of Federal Procurement Policy (OMB) |
| OGT | Outgoing Trunk |
| OHQ | Off-hook Queuing |
| OHQT | Off-hook Queuing Tone |
| OIRA | Office of Information and Regulatory Affairs (OMB) |
| OLTDS | On-Line Testing and Diagnostics Subsystem |
| OLTM | Optical Line Terminating Multiplexer |
| OLTP | On-Line Transaction Processing |
| OM | Operational Measurement(s) |
| OM | Operational Measurements |
| OM | Operations and Maintenance |
| OM HOST | Operational Measurements Host |
| OMAC | Operations, Maintenance, Administration and Control |
| OMAP | Operation and Maintenance Application Point |
| OMAT | Operation Measurement and Analysis Tool |
| OMB | Office of Management and Budget |
| OMB | Outgoing Message Buffer |
| OMF | Operations Material Forecast |
| OMG | Order Management Group |
| OML | Outgoing Matching Loss |
| OMP | Operation and Maintenance Processor |
| OMR | Optical Mark Reading |
| OMS | Operating Measurement System |
| OMS | Operational Measurement System |
| OMS | Operational Measurements |
| OMS | Operations Management System |
| OMS5 | 5ESS Office Monitoring System (AT&T) |
| ONA | Open Network Architecture |
| ONAL | Off Network Access Line |
| ONI | Operator Number Identification |
| ONI | Optical Network Interface |
| ONP | Open Network Provision |
| ONTC | Office Network and Timing Complex |
| OOF | Out of Frame |
| OOMS | Office of Organization and Management Systems |
| OOS | Out of Service |
| OOS | Out of Service (circuits, clearing time, tickets) |
| OP | Originating Party |
| OPART | Origination Partition |
| OPART/STS | Originating Partition/Serving Translation Scheme |
| OPC | Origination Point Code |
| OPEN | Open Protocol Enhanced Network |
| OPG | Operations Recovery Group |
| OPL | Outpulsing Programming Language |
| OPM | Office of Personnel Management |
| OPM | Operations per Minute |
| OPM | Outside Plant Module |
| OPRT | Operator intercept |
| OPS | Operations Department |
| OPS | Order Processing System(s) |
| OPUS | On-line Promotion Update System |
| OPX | Off-premises Extension |
| OR | Operator Released |
| OR/MS | Operations Research/Management Science |
| ORB | Office Repeater Bay |
| ORD | Operating Room Desk |
| ORD | Operational Readiness Demonstration |
| ORDVAC | Ordnance Variable Automatic Computer |
| ORM | Optical Remote Module |
| ORName | Originator/Recipient Name |
| ORR | Office Release Record |
| ORRS | On-line Records and Reporting System |
| OS | Operating System |
| OS/MFT | Operating System/Multiprogramming with a Fixed Number of Tasks |
| OS/MVS | Operating System/Multiprogramming with Virtual Storage |
| OS/MVT | Operating System/Multiprogramming with a Variable Number of Tasks |
| OS/VS1 | Operating System/Virtual Storage 1 |
| OS/VS2-MVS | Operating System/Virtual Storage 2 |
| OSAC | Operator Speed of Answer Consistency |
| OSCSTAT | Remote Clock Oscillator Status |
| OSDS | Operating System for Distributed Switching |
| OSDS-C | Operating System for Distributed Switching in the AM (Administrative Module) |
| OSDS-M | Operating System for Distributed Switching in the SM (Switching Module) |
| OSF | Open Software Foundation |
| OSHA | Occupational Safety and Health Act |
| OSI | Open System Interconnection (reference model) |
| OSM | Oversight System Manager |
| OSN | Operation Systems Network |
| OSO | Originating Screening Office |
| OSP | Operations and Service Processor (Tandem NonStop EXT computer) |
| OSP | Outside Plant |
| OSPCAMIS | Outside Plant Construction Activities Management Information System |
| OSPS | Operator Services Position System |
| OSR | Out-of-Service Record (database) |
| OSS | Office Software Summary |
| OSS | One-Stop Shopping |
| OSS | Operations Support Services |
| OSS | Operations Support System |
| OSS | Operations Systems Support (NOCC) |
| OSS | Operator Service System |
| OSSA | Operational Support Systems – Atlanta |
| OSSC | Operations System Support Center (NOCC) |
| OSSW | Operational Support Systems – Western |
| OT | Order Tasks |
| OTC | Operating Telephone Company |
| OTDR | Optical Time Domain Reflectometer |
| OTO | Office to Office |
| OTP | Office of Telecommunications Policy (Executive Office of the President) |
| OTR | Operational Trouble Reports |
| OUTWATS (OUTWT) | Outward Wide Area Telecommunications Service |
| OWR | Operations Work Request |
