network interface module
    N-ISDN
    ISDN
    NNI
    network network interface
    NRZ
    non return to zero
    NSAP
    network service access point
    NVRAM
    non volatile RAM
    NVT
    network virtual terminal
    PBX
    private branch exchange
    PCM
    pulse code modulation
    PCN
    personal communications network
    PCR
    peak cell rate
    PCS
    personal communications service
    PDA
    personal digital assistant
    PDN
    public data network
    PDU
    protocol data unit
    PER
    packet error rate
    PIR
    packet insertion rate
    PLCP
    physical layer convergence protocol
    PLR
    packet loss rate
    PMD
    physical medium dependent
    POTS
    plain old telephone service
    PPD
    partical packet discard
    PPM
    page per minute
    PPM
    Protocl reference model
    PRN
    packet radio network
    PS
    packet switching
    PSN
    packet switching node
    PSK
    phase shift keying
    PVC
    permanent virtual circuit
    PVP
    permanent virtual path
    quadratare amplitude modulation
    QoS
    quality of service
    RFC
    request for commnents
    RPC
    remote procedure call
    RTS
    round trip sample
    SAP
    service access point
    SAP
    sercie advertising protocol
    SAR
    segmentation and reassembly
    SCR
    sustained cell rate
    SDH
    synchronous digital hierarchy
    SDLC
    synchronous data link control
    SDU
    service data unit
    SSL
    secure socket layer
    SGMP
    simple gateway monitor protocol
    SIPD
    simple internet protocol plus
    SLIP
    serial line interface protocol
    SMDS
    switched multimegabit data services
    SMF
    single mode fiber
    SMI
    structer of management informatin
    SMT
    station managment protocol
    SMTP
    simple mail transfer protocol
    SNR
    signal noise ratio
    SONET
    synchronous optical network
    SPE
    synchronous payload envelope
    SPP
    sequential packet protocol
    SII
    server side include
    STDM
    statistical time division multiplexing
    STM
    synchronous transfer mode
    STS
    synchronous transport signal
    SVC
    switched virtual pair
    TC
    transmission convergence
    TCP
    transmission control protocol
    TDM
    time division multiplexing
    TFTP
    trival file trnasfer protocol
    TIP
    terminal interface processor
    TSAP
    transport service access point
    TTL
    time to live
    UBR
    undefined bit rate
    UEM
    universal ethernet modeule
    UDP
    user datagram protocol
    UNI
    user network interface
    UPC
    usage parameter control
    USB
    universal serial bus
    UUCP
    unix to unix copy program
    VAN
    value added network
    VBR
    variable bit rate
    VCC
    virtual channel connection
    V-D
    vector distance/bellman-ford
    VLAN
    virtual LAN
    VPN
    virtual private network
    VOD
    video on demand
    VPC
    virtual path connection
    VRML
    virtual reality modeling language
    WDM
    wavelength division multiplexing