| 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 |
operator |
operator |
| OPS (Off-Premises Station) |
optical |
optical add/drop multiplexer (OADM) |
Optical Carrier (OC) |
optical character recognition (OCR) |
| optical cross-connect (OXC) |
optical data unit (ODU) |
optical-electrical-optical (OEO) |
optical fiber |
optical fiber, conductive (OFC) |
| optical fiber, conductive, plenum (OFCP) |
optical fiber, conductive, riser (OFCR) |
optical fiber, nonconductive (OFN) |
optical fiber, nonconductive, plenum (OFNP) |
optical fiber, nonconductive, riser (OFNR) |
| optical isolator |
optical line-of-sight (optical LOS) |
optical line terminal (OLT) |
optical mark recognition (OMR) |
optical network terminal (ONT) |
| optical network unit (ONU) |
optical-optical-optical (OOO) |
optical transport network (OTN) |
optical transport unit (OTU) |
optics |
| OPX (Off-Premises eXtension) |
OQPSK (Offset Quadrature Phase Shift Keying) |
orange hose |
orderwire |
.org (organization) |
| original band (O-Band) |
original equipment manufacturer (OEM) |
or ITU-TSS) |
orthogonal |
orthogonal frequency division multiplexing (OFDM) |
| oscillate |
oscillate |
oscillator |
oscillator |
OSI Reference Model (Open Systems Interconnection Model) |
| OS (Operating System) |
OSPF (Open Shortest Path First) |
OSP (OutSide Plant) |
OSS (Operations Support System) |
Ostrofsky, Marc |
| OTA (over the air) |
Other Common Carrier (OCC) |
OTN (Optical Transport Network) |
OTN (Optical Transport Network) |
OTU (Optical Transport Unit) |
| OTU (Optical Transport Unit) |
out-of-band signaling and control |
out-of-phase |
outside plant (OSP) |
outside vapor deposition (OVD) |
| outsourcing |
OVD (Outside Vapor Deposition) |
overhead |
overlay |
overlay area code |
| overlay carrier |
over-over |
oversubscribe |
oversubscribe |
over the air (OTA) |
| over the air (OTA) |
OXC (Optical CROSS-Connect) |
P |
P1024B |
P.563 |
| P.800 |
P.861 |
P.861 |
P.862 |
PABX (Private Automatic Branch eXchange) |
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