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There are 22 names in this directory beginning with the letter N.
NACN: North American Cellular Network

North American Cellular Network (NACN) is an organization of cellular providers that facilitates cellular calls across the country to be linked for seamless roaming.

NADS: North American Digital Standards

North American Digital Standards (NADS) refers to the North America cellular standards: the first generation is TDMA and has been in service since 1992. The second generation is CDMA which was accepted by the TIA2.48 as a standard in 1992. The third generation is CDMA2000 and more.

NAM: Number Assignment Module

Number Assignment Module (NAM) is the programmable module in an AMPS analog phone used to contain the MIN, ESN, home system ID and other information.

NAMPS: Narrowband Advanced Mobile Phone

Narrowband Advanced Mobile Phone Service (NAMPS) is an improved version of AMPS systems. NAMPS is a cellular call-handling system that uses digital signalling techniques to split the existing 30 kHz wideband voice channels into three 10 kHz narrowband voice channels. The result is three times more voice channel capacity than the traditional AMPS system provides. NAMPS cellular phones are manufactured for dual mode operation, and they are compatible with traditional AMPS systems.

NASS: Network Attachment Subsystem

The Network Attachment Subsystem (NASS), a component in the IP Multimedia Susbsystem (IMS), provides the following functionalities: (1) Dynamic provision of IP address and other user equipment configuration parameters (e.g. using DHCP). (2) User authentication, prior or during the IP address allocation procedure. (3) Authorisation of network access, based on user profile. (4) Access network configuration, based on user profile. (5) Location management.

Nationwide Paging

Nationwide Paging is a method of national or regional paging in which a single frequency is used throughout the nation (region) for sending messages to a paging system subscriber.

Nested codes

Nested codes is a type of concatenated block code where the layers (inner and outer) are amalgamated in such a way that burst errors — not able to be corrected by the inner code — are sufficiently spread over enough blocks as to be corrected by the outer layer.


NetStumbler is a freely available Windows utility for wireless LAN discovery. It is useful for site surveys, detecting rogue access points, and finding and mapping WLAN installations.

NFC: Near Field Communication

Near Field Communication (NFC) is a short-range wireless connectivity standard jointly developed by Philips and Sony that uses magnetic field induction to enable communications between devices when they're touched together, or brought within a few centimeters of each other. The standard specifies a way for the devices to establish a peer-to-peer (P2P) network to exchange data.

NLOS: Non Line of Sight

Non Line of Sight (NLOS), also known as near-line-of-sight or obstructed path/pathway, is a term used to describe radio transmission across a path that is partially obstructed, usually by a physical object in the Fresnel zone. Many types of radio transmissions depend, to varying degrees, on line of sight between the transmitter and receiver. Obstacles that commonly cause NLOS conditions include buildings, trees, hills, mountains, and, in some cases, high voltage electric power lines.

NMC: Network Management Center

Network Management Center (NMC) is an operations center used to manage network resources such as the MSC, location registers and base stations.

NMT-450: Nordic Mobile Telephony – 450

Nordic Mobile Telephony – 450 (NMT-450) is an early cellular system developed and operated in northern Europe utilizing the 450 MHz band.

NMT: Nordic Mobile Telephony

Nordic Mobile Telephony (NMT) is the common Nordic standard for analog mobile telephony as established by the telecommunications administrations in Sweden, Norway, Finland and Denmark in the early 1980s. NMT systems have also been installed in some European countries, including parts of Russia, and in the Middle East and Asia. NMT is operated in 450 MHz and 900 MHz bands.


Noise refers to any undesirable communication channel signals.

Noise figure

Noise figure is a figure of merit for receivers and preamplifiers representing the amount of excess noise added to the signal by the amplifier or receiving system itself. The lower the noise figure, the less excess noise is added to the signal.

NRS: Nomadic Relay Station

Nomadic Relay Station (NRS), a concept in the WiMAX network, is a relay station that is intended to function from a location that is fixed during periods of time comparable to that of a user session. An NRS is not permanently installed. An NRS may rely solely on battery power in some instances.

nrtPS: Non-Real-Time Polling Service

Non-Real-Time Polling Service (nrtPS) is one of the five QOS service types defined in the IEEE 802.16 WiMAX. The 802.16 protocol supports five types of QoS — UGS (Unsolicited grant service), rtPS (Real time polling Service), ertPS (Extended Real-time POLLING SERVICE), nrtPS (Non-real-time polling service and BE (Best effort service). The Non-Real-Time Polling Service (nrtPS) is designed to support non real-time service flows that require variable size Data Grant Burst Types on a regular basis, such as high bandwidth FTP. The service offers unicast polls on a regular basis, which assures that the flow receives request opportunities even during network congestion.

NRZ: Non Return to Zero

Non Return to Zero (NRZ) is a type of data stream where successive data pulses “ones” are continuous over several clock cycles without returning to the “zero” state between successive “ones”.

NSS: Network Switching Subsystem

Network Switching Subsystem is a portion of a GSM network that manages the connections and communications within the network. The BSS and OSS complete the major components of the network.

Numeric Paging or alphanumeric-paging

Numeric Paging is the most widely used type of paging. The caller simply calls your pager phone number and enters the number where you can reach them. This number appears on the receiver's pager, and the receiver can call the sender. On the other hand, text paging allows callers to send the receiver a short message that you can act on immediately.

Nyquist filter

Nyquist filter is an ideal low pass filter with a cutoff frequency equal to the sampling rate. This technique is used to convert PAM pulses to an analog signal in D/A converters.

Nyquist rate

Nyquist rate is the minimum sampling rate proposed by Nyquist for converting a band limited waveform to digital pulses. The rate must be at least twice the highest frequency of interest in the waveform being sampled.

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