802.11e

• 16-level quadrature amplitude modulation (16-QAM) at 500 kbps per channel for a total of 24 Mbps, and 750 kbps per channel for a total of 36 Mbps

• 64-level quadrature amplitude modulation (64-QAM) at 1 Mbps per channel for a total of 48 Mbps, and 1.125 Mbps per channel for a total of 54 Mbps

In Europe, 802.11a competes for spectrum with HiperLAN, the standard developed and promoted by the European Telecommunications Standards Institute (ETSI). ETSI requires that two additional protocols be used in conjunction with 802.11a in order to protect incumbent applications and systems running over previously allocated shared spectrum. Dynamic frequency selection (DFS) allows the 802.11a system to dynamically shift frequency channels, and transmission power control (TPC) reduces the power level. In combination, these protocols serve to eliminate interference issues with incumbent signals. See also 16-QAM, 64-QAM, 802.11, BPSK, channel, ETSI, IEEE, modulation, QAM, QPSK, protocol, signaling rate, subcarrier, symbol, and WLAN.

• NT1 (Network Termination 1)
• NT1 (Network Termination 1)
• NT2 (Network Termination 2)
• NT2 (Network Termination 2)
• NTACS (Narrowband Total Access Communications System)
• NTIA
• NT (Network Termination)
• NTSC (National Television Standards Committee)
• null
• null modem
• numbering plan administration (NPA)
• Numbering Plan Area (NPA)
• number portability
• Number Portability Administration Center (NPAC)
• Numbers
• numerical aperture (NA)
• NXX
• NXX
• NXX
• Nyquist, Harry (1889–1976)
• Nyquist theorem
• NZDF (Non Zero Dispersion-Shifted Fiber)
• O
• OADM (Optical Add/Drop Multiplexer)
• OAM&P (Operations, Administration, Management, and Provisioning)