Communications Systems Glossary

 

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    Narrowband.  The term narrowband is used to indicate a small amount of bandwidth. Often used to refer to baseband, and particularly voice, frequencies.

    Natural sampling.  In natural sampling the pulse amplitude takes the shape of the analogue waveform for the period of the sampling pulse.

    NetWare.  Netware is a local area network (LAN) operating system (NOS) software provided by Novell.

    Network.  A network is the interconnection of two or more computers by a communications medium (line, coaxial cable, fibre, IR or RF), together with appropriate hardware and software.

    Network interface card (NIC).  Network interface cards (NICs) provide the interface between the network device (say the PC) and the network.

    Network layer (Layer 3).  The network layer is layer 3 of the ISO OSI 7-layer model. Responsible for routing data through a communication network.

    Network manager.  A network manager is an individual responsible for administering, configuring, planning, monitoring, and establishing standards and procedures for a network.

    Network operating system (NOS).  The network operating system (NOS) is the central software on a network.

    Node.  A node is a processing point (normally a switching or routing point) in a network.

    Noise.  Noise refers to random and unpredictable electrical signals produced by natural processes both internal and external to the communications system.

    Book Lists

    Negative acknowledgement (NACK).  See automatic repeat request (ARQ).

    Non-return to zero (NRZ).  Non-return to zero (NRZ) is a digital signalling technique in which the signal is at a constant high level (above zero volts) for a binary 0 and a low value (below zero) for a logical 1.

     

    Please contact Argos Press if you would like to propose other words or phrases to extend these glossaries. © Argos Press Pty Ltd, Canberra, 2003-2004. All rights reserved. Please contact Argos Press for all requests to reproduce, broadcast, adapt and communicate Argos Press content (for example this entry on Communications Systems).

    Our other resources include Antennas, Appliances, Broadband Internet, CDMA, Communications Systems, GSM, Modems, Project Management, Radar, Risk Management and Decision Making, Satellite Communications, SMS, Speakers, Systems Engineering, Team Building, Time Management, Transmitters and Receivers, and XML.
     
    A B C D E F G H I J K L M N O P Q R S T U V W X Y Z