Triple Data Encryption Standard
A Dolby audio compression scheme, IEC standard 13818-7 for MPEG-2, and IEC
14496-3 for MPEG-4.
ATM Adaptation Layer Five. An encapsulation of packets into ATM frames. ITU-T
Recommendation I.363, March 1993. Connection oriented but variable bit rate, often
used for IP datagrams.
Dolby Digital Surround Sound. Five audio channels plus sub woofer. Sometimes
called 5.1 channels. Used for NTSCDVD-Video.
The speed, in bits per second, at which data is transmitted between the
end user and the network.
Analog to Digital Converter
Asymmetric Digital Subscriber Line. Offers higher download speed than upload
speeds and is usually configured to deliver up to six megabits(Mbps) of data
Add Drop Multiplexor. Splits out part of a SONET link.
Adaptive Differential Pulse Code Modulation. Popular audio encoding (telephone
quality at 32 Kbps).
Asymmetric Digital Subscriber Line. Twisted-pair modem technology that achieves
data rates of up to 8 Mbps downstream to the subscriber, and up to 1 Mbps upstream
to the network at distances up to 18,000 feet.
Accelerated Graphics Port. Located on new PCs between CPU and display controller.
A force of substance that causes change.
Any number of services or systems that aggregate particular items for
convenient use by customers.
Access Identifier. Start of Tut HomeRun packet, for collision detection.
A circuit that performs decoding using analog circuit techniques rather
than digital circuit techniques.
American National Standards Institute
Application Programming Interface. A specification of a software interface, usually
in terms of data structures and function declarations.
Analog Protection System. Prevents easy piracy, such as Macrovision, which
prevents analog copies on VHS tapes.
Acceptable Reliability Level
Automatic Repeat reQuest. Using link level sequence numbers for retransmission.
Advanced Streaming Descriptor. NetShow encoder config files.
Application Specific Integrated Circuit.
AT Attachment Packet Interface
Active Template Library
Asynchronous Transfer Mode. A family of specifications for network connection at
speed like 155 Mbps, 622 Mbps, and higher. Based on tiny cells, assembled into
frames or bit streams.
Advanced Television Systems Committee
ADSL Transceiver Unit. ATU-C is the central office end, and ATU-R the “remote”
C / Audio Video Control, (part of 1394).
Audio Video Transport
/ A central very high-speed, fiber network transmission path used for
high-volume network-to-network connections.
A means of communication from users to content providers.
The range of frequencies of interest on a channel.
Base Address Register.
Broadcom Advanced Server Control System.
Broadcom Advanced Server Program.
Binary Convolutional Code
Binary Exponential Backoff. Collision resolution on Ethernet.
Battery, Over voltage, Ringing, Supervision, Coding, Hybrid, Test
Bits per second. The number of bits passing a point every second.
Basic Rate Interface. The basic unit of ISDN service, usually 56 Kbps or 64 Kbps.
A device that connects two networks as a seamless single network using the same
A data modem that uses the bandwidth within a cable TV system, which can
have speeds up to 80 times faster than an ISDN line or six times faster
that a dedicated T1 line.
Local or temporary storage.
Carrierless Amplitude and Phase. Also called Carrierless AM/PM (Amplitude
modulation and phase modulation). A modulation scheme for xDSL that shipped
earlier than the official standard DMT. The notation n-CAP means log2(n) bits
Collocation involves companies – either Incumbent Local Exchange Carriers
(ILECs) or independent firms — providing space to house
Computer Aided Software Engineering, Common Application Service Element.
Cipher Block Chaining. A mode of DES.
Card Bus “Dongle” board, with magnetics and LED.
CardBus Network Interface Card reference board.
Constant Bit Rate, committed bandwidth reservation.
Charge Coupled Device. Common digital camera technology.
Circular buffer Data Unit
Processing of data stream to greatly reduce(compress) the data bandwidth required
to transmit video images.
Consumer Electronics Bus. “Standard” powerline net, about 10 Kbps.
53 byte units switched by ATM technology.
Consumer Electronics Show
ConFiguration IDentifier (device and vendor ids for a PCI device).
Challenge Handshake Authentication Protocol. For PPP link (usually Dial-In)
Common Interchange Format. A popular video encoding, often 352×288 pixels, about
half of CCIR-601.
Competitive Local Exchange Carrier.
Class Identifier. String of hex numbers for ActiveX.
Cable Modem Information Center, configuration Management Information Center.ISO
proposal for network management.
Common Management Interface and Protocol. ISO proposal for network management.
Complementary Metal Oxide Semiconductor. Technology used to manufacture silicon
Cable Modem Termination System. The cable headend device which serves as a
bridge between a DOCSIS cable data modem and the internet.
Composite Network Interface Card. An AFE in 2-3.5 MHz band (1.25 MBaud), plus
Galileo and FPGAs, codecs and discrete analog components.
Central Office. Of a local exchange carrier, the local “phone company”.
Coded Orthogonal Frequency Division Multiplexing
Coder and Decoder. In hardware, the chips that convert analog to digital samples
and convert digital samples to analog.
Collision Resolution Algorithm
Cyclic Redundancy Check
Clipping, or removing parts of video that are not displayed.
Chartered Semiconductor Manufacturing.
CD / Carrier Sense Multiple Access with Collision Detection. Ethernet Media
Access Control algorithm.
Content Scrambler System. Encryption scheme for DVD. Also Cascading Style Sheet
Coarse Wave Division Multiplexing.
Uncompressed Digital Video and Audio standard used to master movies. Resolution
is 480 lines by 720 pixels.
Digital to Analog Converter
Unused fiber optic cable, sometimes referred to as “unlit glass.”
Digital TV Application Software Environment
Digital Audio Visual Council
Data-parallel bit-serial C
Digital Broadcast Satellite. A broadband communications technology that broadcasts
digital television programming from satellites directly to dish antennas.
Discrete Cosine Transform. A technique for compressing images by converting them
into the frequency domain. Used in JPEG, MPEG, and H.261.
Distributed Component Object Model. Microsoft COM follow-on.
Device Driver Kit. Some DDK’s are OS-specific (Windows 95, NT 4.0, NT 5.0, 98, CE)
others are device class-specific.
Dynamic Device File System. DDFS is an architecture which requires a driver to
support a combination of a particular host adapter and a particular storage device
or set of devices.
Digital Data Source, Digital Data System, Dataphone Digital Service.
Digital Enhaced Cordless Cordless Telecommunication. Phone standard used in SWAP.
Decision Feedback Equalizer. Digital signal processing technique to determine
equalization based on previous symbol sequence.
Distributed Fair Priority Queuing. Collision resolution algorithm.
Dynamic HyperText Markup Language.
The subtraction of two “signals” (numbers, images, etc.) in the
Digital Loop Carrier. Combines several local loops into a single T1 line.
Delivery Multimedia Integration Framework. MPEG-4 effort for combined audio, video,
web pages, and kitchen sinks, over 28 Kbps modems.
Discrete MultiTone. The official T1.413 standard modulation scheme for Digital
Subscriber Line technology (xDSL) patented by Amati (now TI).
Distributed interNet Applications
Domain Name Services. Uses name rather than an actual Internet Protocol(IP)
address for simplicity.
Company that does many quality audio encodings.
Document Object Model, web page standard from W3C.
Data flowing from the central office (CO) to the subscriber. In technolgies
like ADSL the downstream data rate is significantly higher than upstream.
Design Rule Check. Performed on a chip before being manufactured.
Digital Subscriber Line Access Module
Digital Service level zero. Same as BRI, Equivalent to one telephone call’s worth
Digital Signal Processing
Digital Service level one. 1.554 Mbps, which can carry 24 telephone calls. A
Physical interface that carries this service is called T1.
Digital Service level three. About 45 Mbps, or 30 DS1 channels.
Digital Subscriber Line Access Multiplexer. Concentrates up to hundreds of xDSL
subscribers onto a smaller number of ATM trunk lines.
Digital Satellite System
Digital Signal Processing. A signal processing technique that takes real-time, high-
speed signals, such as radio, cellular phones, or satellite TV broadcasts, then
mathematically alters it to improve the signal. This technology includes filtering,
speech recognition, image enhancement, data compression, and noise reduction.
Coding and decoding data with a Digital Signal Processing chip.
Desktop Support Tracking System
Digital Transmission Licensing Authority organization for DTCP.
Digital Transmission Content Protection (for 1394).
Digital Theater System. Audio quality competes with Dolby Digital AC-3.
Digital Television, includes HDTV and digital versions of SDTV.
Digital Video. Generic term, and a specific DCT protocol for 1394 camcorders.
Digital Versatile Disc, sometimes Digital Video Disk. Follow-on to CD-ROM, nominal 9
Mbps transfer rate.
A Digital Video format promoted by JVC. Designed to record Digital Broacast
Satellite (DISH) programs and play older VHS tapes.
Digital Video Interactive. A package of technology from Intel, including some
popular compression formats.
Dense Wavelength Division Multiplexing
Dense Wavelength Division Multiplexing
Electronic Commerce. Electronic transactions between business and customers
via the Internet.
External Bus Interface
Emitter Coupled Logic
Board with discrete Analog Front End plus digital chip.
End Of File, or End Of Frame.
Extended Perceptual Audio Coder. With CD quality at 128 Kbps.
Electronic Privacy Information Center
TCL front end to simple diagnostics driver.
NIC Diagnostic Driver for Epidiag.
Networking protocol widely used in local area networks (LANs) for
connecting devices by means of copper twisted-pair wiring at
speeds of 10 Mbps.
Federal Communications Commision
Frequency Diverse Quadrature Amplitude Modulation
Frequency Division Multiplexing
Forward Error Correction. A receiver technique for correcting errors in the received
Focused Ion Beam. Process of making changes to an integrated circuit after
A high-speed data link planned to run up to 2 Gbps on a fiver optic cable.
A method of data transmission in which data is modulated on to light and is
transmitted at very broad bandwith fibers over very pure, extremely thin
A cable made of glass fibers that transports data or voice signals.
A process used in both analog and digital processing to pass one frequency or
frequency band while blocking others or visa versa.
Finite Impulse Response. A very useful kind of digital filter.
Apple name of what is now the IEEE P1394 standard.
A sequence of packets that share enough common characteristics (such as source
and destination) that they can be routed the same way, and handled with the same
quality of service policy.
Feed Forward Equalization
Four Character Codes for video pixel formats.
Fine Pitch Ball Grid Array
Field Programmable Gate Array. Quick way to make low volume integrated circuits.
Frame Relay. A common service used to connect LANs.
Unit of data sent between the data link layer and Frame Relay.
Frequency Shift Keying
Fractionally Spaced Equalizer
Frame User Network Interface. A service on ATM using frames instead of bit streams.
A Proposed xDSL standard using discrete multi tone modulation.
AA proposed xDSL standard for negotiation to decide which of all the different
versions are being used on a particular line.
The ADSL Forum supports the UAWG’s mission to create a universal, splitterless,
and therefore easy to install lower-speed version of ADSL (G.lite or DSL-lite).
Grand Alliance. 18 digital (including HDTV) standards.
Glass Microwave Integrated Circuit
Gigabit Media Independent Interface
Giga bits per second. 1,000,000,000 (one billion) bits per second, a measure of
Synchronizing multiple video sources to the same clock.
Giga Hertz. One billion cycles per second.
Gigabit PHY is the specific description for a PHY operating at 1000Mbps
The new ITU standard that forms the basis of Universal ADSL, which supports
1.5 Mbps downstream and 384 Kbps upstream.
GNU version of pic, which is part of the groff document formatting system. pic
compiles descriptions of pictures embedded within troff or TeX input files into
commands that are understood by TeX or troff.
Global System for Mobile phones.
A common simple video compression technique, originally used for video
Home Audio Video interoperability. A standard for 1394 (Firewire) devices.
Digital television “standards”, this one favored by Microsoft. Still only
480 lines, but 60 progressive frames instead of interlaced.
In a local area network, a device that receives signals from each data
station and then retransmits the signals to all the data stations.
High Data Rate Digital Subscriber Line. This DSL variety created in the late
1980’s delivers symmetric service at speeds up to 2.3 Mbps in both directions.
High Definition Television. Offers six times the resolution of current TV and
a full 60 frames per second temporal resolution which is twice the vertical and
horizontal resolution of current NTSC analog television broadcasting. It also
supports near-CD (compact disc) sound quality.
The central distribution point in a cable television system. Typically serves
tens to hundreds of thousands of homes.
Hybrid Fiber Coax. Upgraded cable plant which uses a combination of fiber optic
cable in the backbone and coaxial cable in the subscriber feeder plant.
Hashed Message Authentication Code
Home Phoneline Network Alliance
High Speed Serial Interface (port)
HyperText Markup Language. The authoring language used to create documents on
the World Wide Web.
Local Area Network standards family, wildly successful. Ethernet is
effectively one of them.
Internet Engineering Task Force
Inter Frame Gap. Minimum spacing between frames called IPG in 802.
Flow Management Protocol. Allows a host to instruct an adjacent node (e.g. an
Ipsilon switch controller) to attach a network layer label to a flow, so
subsequent packets on that flow can be switched in hardware.
Incumbent Local Exchange Carrier. The traditional phone company.
Integrated Network Interface Card. Yet another NIC with custom analog and digital
chips on it.
INIC board with extra testing features.
Even Lines in one video field, then odd lines, opposite of progressive.
The IETF working group on Integrated Services. That is, real time traffic such
as audio and video over the Internet.
Input Output Control
Input/output Request Packet
Integrated Service Digital Network
International Standards organization
Internet Service Provider. A company that provides a subscriber a connection to
Integrated Services over Specific Lower Layers
International Telecommunications Union. The world telephone standards body.
Sun programming language
Joint Picture Experts Group. Usually refers to a DCT image compression standard.
Joint Test Action Group, (IEEE Standard 1149.1). Common connector for testing.
Temporal aliasing artifact of digital video processing. For example, displaying
a 30 frames per second image on a 75 Hz PC monitor.
A 56 Kbps modem technology developed by Rockwell and Lucent.
Kilobits per second. Kilo usually means one thousand. Also written as Kbits/sec
Kernel Streaming interface in Windows Driver Model for video, audio, etc…
Layer 2 Tunnel Protocol. Runs the PPP protocol over IP for virtual private nets.
Link Aggregation Control Protocol
Local Area Network. A private data communications network linking a variety of
data devices such as computers and printers within an office or home environment.
LAN Emulation. ATM service for Ethernet bridging.
Linear Feedback Shift Register
Local Exchange Carrier. The local phone company.
Closed captioning standard (displays text at the bottom of video).
Local Multipoint Distribution System. A broadband wireless communications network
that uses microwave frequencies around 28 GHz to transmit video and data to
residences over a cellular-like network at distances under a few miles.
The single pair for wires running from the central office (CO) to each telephone.
least significant bit
Layout versus Schematic
Media Access Control. Protocol for controlling the upstream and downstream traffic
flow in a local or wide area network.
Analog scheme that discourages making copies of video content on VHS tapes.
Megabits per second. One million bits, and not 1024 times 1024. Also written as
Mbits/sec or Mb/sec.
Media Control Interface
Message Digest 5. This is a hash algorithm.
DOCSIS / Multimedia Cable Network System / Data Over Cable Service Interface
Specification. Industry specification that defines the technical equipment
for high-speed cable modem and headend equipment.
Multiple Document Interface, Media Dependent Interface.
Media Dependent Interface Crossover
Consumer electronics devices that feature digital functions,
combining the power of the PC with the convenience of traditional
Modulation Error Rate
Media Gateway Control Protocol
Management Information Base. The specification of SNMP object numbers for one
specific kind of management agent. The basic IP MIB is often called MIB-II.
Media Independent Interface
MODulator/DEModulator. Conventional modems comprise equipment which convert
digital signals to analog signals and vice versa.
Medium Quad Flat Pack
Media Independent Interface. Replaces 10Base-T Ethernet’s Unit Interface (AUI),
and is used to connect the MAC layer to the physical layer. The MII establishes
a single interface for 100Base-TX, 100Base-T4, and 100Base-FX.
Multimedia Internet Mail Extension
Microprocessor without Interlocked Pipelined Stages.
Multichannel Multipoint Distribution Service. A broadband wireless communications
network that uses microwave frequencies around 2.5 GHz to transmit video to
residences at distances up to tens of miles.
Modulator and Demodulator. Converts between digital data and an analog channel
(such as a telephone line).
MPEG level 3 audio. Can be used with MPEG-1 or 2 video, or by itself.
Moving Pictures Experts Group. Industry standard for compressing and decompressing
digital audio video signals.
Multi Protocol Label Switching. IETF technique for large point-to-point networks.
Modern Systems Analysis and Design
Microprocessor Slave Interface
An electronic device that allows multiple channels to be combined into
a single signal.
Japanese analog HDTV standard, as opposed to digital ATSC.
Network Address Translation. Mapping IP addresses across a gateway to avoid
allocating a real block of address space.
Networking Communications Conference
Network Control Panel Applet
NIC Diagnostic Driver, (replaced by EpiNDD).
Netware Event Service Layer
Network Driver Interface Specification. Version 4.0 in Windows 95 OSR2,
4.1 in NT 4.0, version 5.0 in Windows 98 and NT 5.
Network Equipment Building System
Near End Cross Talk. A problem with modems over bad wires.
Next Generation Input and Output
NIC Network Interface Card. Plug-in adapter card enables a computer to connect to a LAN.
Network Interface Device. Box between phone line and premise network.
Non-Linear Editing of video, as opposed to tape.
Negative Positive Negative
Never Twice the Same Color. The US Analog Television standard.
Operations, Administration, and Maintenance
Optical Carrier level three
Optical Carrier level twelve. An ATM rate at about 622Mbps.
Orthogonal Frequency Division Multiplexing. Used in European digital
Open Host Computer Interconnect. Between IEEE 1394 and a computer.
Number space used in NDIS set and get information calls.
Object Linking and Embedding
Optimized Reconfigurable Cell Array
Open Video System. Scheme to send digital video without proprietary encapsulations
(such as DSS).
A variable-sized unit of information that can be sent across a packet-switched
Phase Alteration Line. 50 Hz video format used in much of the world outside of the
USA. Not NTSC.
Peak to Average Ratio. Also, Project Authorization Request. When IEEE starts a new
Personal Computer Interface. The bus that most personal computers use.
Pulse Code Modulation. A common lossless encoding of Audio.
Protocol Data Unit. Usually ISO speak for “packet”.
Protocol Engine. The general purpose programming engines of our defunct switch.
Physical Layer Device. A PHY can be a fiber optic device or a copper device. It can
operate at any speed… 1Mbps, 10Mbps, 100Mbps, 1000Mbps, etc.
Paged Memory Management Unit
Positive Negative Positive
Plastic Optical Fiber
An arrangement, either permanent or temporary, in which the same
data flows or is transferred from a single origin to multiple
A specific line into a switch, specified by shelf, slot, and port within that slot.
The traditional analog voice telephone service (4 kHz or less audible signals,
rings, off hook signals, etc…).
Point to Point Protocol. Some standard encapsulations and negotiations for Internet
Protocol point-to-point links.
Point to Point Tunnel Protocol
Plastic Quad Flat Pack
Public Relations, Press Relations, or Press Releases.
Preamble. Header on each frame used to train demodulator.
Power Spectral Density
Phase Shift Keying. Modulation with constant amplitude.
Public Switched Telephone Network
POSIX Thread. A “standard” multi-tasking OS primitive interface.
Permanent Virtual Connection. A manually configured virtual circuit through an ATM
Quadrature Amplitude Modulation. A digital modulation technique that allows very
efficient transmission of data over media with limited available bandwidth.
The purchase and sale of an investment held for only a very brief period
of time, such as in day trading.
Quadrature Phase Shift Keying. A digital technique which is widely employed in
direct broadcast satellite transmission systems.
Quarter Standard Interchange Format.
Remote Authentication Dial-In User Service. Authorization protocol,
IETF RFC 2138
Rate Adaptive Digital Subscriber Line. Picks the best data rate that the line
Remote Digital Terminal
Random Early Drop. A congestion control algorithm for Internet protocols.
Red Green Blue. Component video color model used in PC frame buffers, and high
end professional (even digital) systems.
Integrated analog front end for DNIC.
Device that amplifies weak signals without regeneration or processing.
Request For Comments. Traditional name for Internet standards documents (and
Internet informational documents).
Run-Length Limit bit encoding used in Tut HomeRun.
Resource Manager. Part of the switch software.
Reduced Media Independent Interface
Root Mean Square. An “average” of an analog signal.
A device that routes data between networks through IP addressing information
contained in the header of the IP packet.
Remote Procedure Call
Resource Reservation Protocol
Runtime Reconfigurable (system)
System Area Network. Now, Storage Area Network (disks and tapes).
Session Announcement Protocol
A proprietary input/output (I/O) bus developed by Sun Microsystems
Synchronous with Clock
In 1000BASE-T and 100BASE-TX modes, the transmit data stream is scrambled to
reduce radiated emissions and to ensure that there is no correlation between
symbols in the data stream.
SDH Synchronous Digital Hierarchy. CCITT Family of data networking standards for high
rates over fiber-optics.
SDI Serial Digital Interface, for video uncompressed, e.g. 1.5 Gbps for HDTV.
Session Description Protocol. Used in IETF protocols to announce multimedia events,
through the session announcement protocol, SAP.
Symmetric Digital Subscriber Line. A flavor of xDSL with the same bandwidth in both
Standard Definition Television, 480 lines or less.directions.
A system that allows for scalable, fault-tolerant, and centralized
connectivity for enterprise servers.
An electronic device that serves as an interface between a television set
and a broadband network.
Secure Hash Algorithm
System area network Interface Chip
Subscriber Line Interface (telephone)
Subscriber Line Integrated Circuit, System Level Integrated Circuit, Subscriber
Line Interface Card.
Send Message Block. Microsoft file access protocol.
Serial Media Independent Interface
Switched Multimegabit Data Service
Synchronized Multimedia Integration Language
Sub Net Access Protocol. Header on LLC frames so that the alignment comes out a
little better, with three bytes of zeros, then the Ethernet type identifier for
the network level protocol 0×08 and 0×00.
Simple Network Management Protocol. Used to manage IP networks, by defining
Signal to Noise Ratio
Small Office, Home Office
Synchronous Optical NETwork. A common physical layer for ATM using fiber optics.
Also possible to run PPP or other protocols on top of it. American variant of SDH.
Organized into rings that can tolerate one break (e.g. FDDI).
Serial Plug In, Standard Programming Interface, Spots per Inch.
Source (e.g. address of a packet).
Set Top Box (such as for cable TV).
Multimedia content – such as video, audio, text, or animation that is
displayed by a user as it is received from the Internet, broadcast
network, or local storage.
Subset of ISA bus used by the iLine10 chip to bridge to some other device
(such as a modem).
Replacement term for Baud: a unit of signaling speed, the number of times
a signal on a communications circuit changes.
Switched Virtual Connection
Shared Wireless Access Protocol developed by HomeRF.
A DS1 rate (1.544 Mbps) signal delivered on two twisted pair of copper wires. The
closest European equivalent is called E1, which is 2.048 Mbps. Also a committee of
ANSI that does telecommunications standards.
Temporal Annotation Generator. Audio/video editor licensed from Digital Renaissance
Telephony Application Programmers’ Interface
Tool Command Language
Transmission Control Protocol
Time Division Multiplexing
Time Division Multiple Access
Converting movies (24 frames per second) to video
(usually 30 frames per second).
Time Interval Clock. Tut for 116.6667 nsec.
Telecommunications Management Network
Training on Every Frame. A true packet modem using only the frame preamble.
NIC MIPS program which performs energy detection and transfers samples
to and from the AFE.
Card to connect the switch to an Internet Service Provider (ISP).
Cable of two 18 to 24 guage solid copper strands twisted around each other.
Thin Quad Flat Pack. Package of first iLine10 digital chip.
Any device or apparatus used for selecting and controlling the operating
frequency of a circuit or equipment, such as the channel selector in a
Universal Asynchronous Receiver/Transmitter
Universal ADSL Working Group
Uniform Naming Convention
User to Network Interface. Protocol between an ATM carrier and a customer.
Data flowing from a subscriber towards the central office (CO). Some old
Video on Demand terminology calls this “duplex”, as compared to traditional
cable TV witch is simplex (one direction, downstream, only).
Universal Serial Bus. On every PC since 1997, allows peripherals (albeit sometimes
called dongles) to be added without taking a box apart. ~12 Mbps.
Unshielded Twisted Pair
Virtual Central Office. The Cisco VCO/4K (Virtual Central Office 4000) is a
programmable switch that provides voice services such as integrated messaging,
operates as a core infrastructure switch for wireline or wireless networks, or
acts as a gateway in mixed circuit- and packet-switched networks.
Vestigial Side Band. One of the Digital Television modulations.
Most common modem modulation. 28.8 Kbps rate.
Standard for 56 Kbps modems, merging k56flex and x2.
Implement modem algorithms in software.
Residential Ethernet The internal name V.IP is a pun on the V.n series of modem
Vertical Blanking Interval
Virtual Channel Connection. Identifies a virtual circuit in an ATM switch through an
input port, a virtual channel identifier and virtual path identifier.
Virtual Circuit Identifier. Part of ATM VCC. 16 bits specifying a connection on a
Vector Orthogonal Frequency Division Multiplexing.
Very High Delivered Source Instruction
Very High Bit-Rate Digital Subscriber Line. Twisted pair modem technology that
achieves data rates up to 52 Mbps downstream to the network at distances up to
Video Electronics Standards Association. Consumer electronics inter-connection.
Verilog Hardware Description Language
Virtual Home Environment. GSM scheme to allow cellular phones to work when you
leave one provider area and go to another.
Virtual Instrument Standard Architecture
Algorithm for BCC Forward Error Correction.
Video OBject. File format for DVD-video.
Breakthrough radio frequency(RF) thechnology developed to establish an open
broadband fixed wireless standard for enabling reliable communicaion where line
of sight connections are not practical.
Virtual Path Connection
Video Port Extension or Virtual Path Identifier.
Vestigial Side Band. Modulation used for broadcast digital telelvision.
An operating system for embedded devices.
Wide Area Network. A data communications network, such as the Internet, which
links a variety of data devices over a large geographical distance.
Wavelets are mathematical functions that cut up data into different frequency
components, and then study each component with a resolution matched to its
Windows Foundation Classes. Microsoft Java package.
Weighted Fair Queuing
Operating system running on Digital Signal Processors.
Windows Hardware Quality Laboratory
Important API for Windows 3.x, 95, etc.
A variant of Microsoft Windows for palm tops and embedded applications.
Coding and decoding in software by WinModem.
Microsoft network programming interface.
The other end of the local loop wires from subscribers.
Windows Management Instrumentation in NT 5 and Windows 98.
A modem technology from U.S. Robotics to send 56 Kbps over voice phone lines.
Generic representation of the entire family of Digital Subscriber Line technology
spanning data rates from 128 kbps to 52 Mbps depending on the distance between
the central office subscriber.
Extensible Markup Language
A “D” Network Interface Card with Xilinx FPGAs, in 4-10 MHz band.
C / Video signal with separate luminance and chrominance signals, which often is used
on S-Video connectors.
A color model for video.
A color model for video. The popular 4:2:2 encoding means Y (Luminance) is
sampled twice as often as the UV color values.
A specific digital video pixel format. A plane of 8 bit Y values per pixel, then
a plane of 8 bits of U values per four pixels, and 8 bits of V per four pixels.
This gives an average of 12 bits of data per pixel.
Like YUV12, but with 4:1:1 sampling, one color value for 16 pixels, for 9 bits
per pixel average.