| O-Band (Original Band) |
oblique |
OBRA 93 |
obsessive compulsive disorder (OCD) |
obtuse |
| OC-192 |
OC-48 |
OC-48 |
OC-48 |
OCC (Other Common Carrier) |
| OCD (Obsessive Compulsive Disorder) |
OCD (Obsessive Compulsive Disorder) |
OC (Optical Carrier) |
octet |
octothorpe |
| OD (Outside Diameter) |
ODU (Optical Data Unit) |
OEM (Original Equipment Manufacturer) |
OEO (Optical-Electrical-Optical) |
OFC (Optical Fiber, Conductive) |
| OFCP (Optical Fiber, Conductive, Plenum) |
OFCR (Optical Fiber, Conductive, Riser) |
OFDM (Orthogonal Frequency Division Multiplexing) |
offered load |
off-hook |
| off-hook voice announce |
off-premises extension (OPX) |
off-premises station (OPS) |
offset quadrature phase shift keying (OQPSK) |
offshoring |
| OFN (Optical Fiber, Nonconductive) |
OFNP (Optical Fiber, Nonconductive, Plenum) |
OFNR (Optical Fiber, Nonconductive, Riser) |
OH |
Ohm, Georg Simon (1787–1854) |
| Ohm’s Law |
Ohm’s Law |
OLT (Optical Line Terminal) |
OLT (Optical Line Terminal) |
Omnibus Budget Reconciliation Act of 1993 (OBRA 93) |
| OMR (Optical Mark Recognition) |
ones density |
on-hook |
ONT (Optical Network Terminal) |
ONU (Optical Network Unit) |
| OOO (Optical-Optical-Optical) |
opaque OXC (opaque Optical CROSS-Connect) |
open circuit |
open-loop algorithm |
Open Shortest Path First (OSPF) |
| open source |
open source software (OSS) |
open standard |
Open Systems Interconnection Model |
open wire |
| operating system (OS) |
operations, administration, management, and provisioning (OAM&P) |
operations and maintenance (O&M) |
operations support system (OSS) |
operator |