ITU-D (International Telecommunication Union-Development Sector)

The sector of the ITU

that works to further telecommunications development around the world, especially in developing countries. See Appendix A for contact information. See also ITU.

• 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)