ACTS -- Advanced Communications Technology Satellite 06/08/00
Algorithm
AM -- Amplitude Modulation
Analog
Aperture
Apogee
Artifact
ASCII -- American Standard Code for Information Interchange
Aspect Ratio
ATM -- Asynchronous Transfer Mode
ATSC--Advanced Television Systems Committee Attenuation 06/08/00
Attenuation 10/20/00
Azimuth
Backhaul
Bandwidth
Baseband 10/20/00
Baud
Big Leo
B-ISDN -- Broadband ISDN
Bit
Bit Rate
Bit Stream
Broadband
BSS -- Broadcast Satellite Service
Byte
Cache
C-Band
CDMA -- Code Division Multiple Access
Chrominance
Clarke Orbit
Cliff Effect
Clipper Chip
Color Difference
Common Carrier
CONUS -- Continental United States
DAMA -- Demand-Assigned Multiple Access
DARPA -- Defense Advanced Research Projects Agency
dB -- Decibel
DCII -- DigiCipher II
Digital
Digital Artifacts
Digital Bit Stream
Digital Compression
DSL -- Digital Subscriber Line
DS-Level -- Digital Signal Level
DVB -- Digital Video Broadcast
EIRP -- Effective Isotropic Radiated Power
Electromagnetic Spectrum
Encapsulator
Encryption
Equivalant Noise Temperature
Ethernet
Ethernet Cable
FCC -- Federal Communications Commission
FDMA -- Frequency Division Multiple Access 10/20/00
FEC -- Forward Error Correction 10/20/00
FM -- Frequency Modulation
FSS -- Fixed Satellite Service
Gain
Geo -- Geosynchronous Earth Orbit
GMT -- Greenwich Meridian Time
Ground Segment
G/T -- Gain to Noise Temperature
Guard Band
HDTV -- High Definition Television
Hertz
High-Power Satellite
ICANN -- Internet Corporation for Assigned Names and Numbers
IEEE -- Institute of Electrical and Electronic Engineers, Inc.
IEEE 802
Inclined Orbit

Interlaced Scanning
Internet
IP -- Internet Protocol
IRD -- Integrated Receiver/Decoder
ISDN -- Integrated Services Digital Network 10/20/00
ISL -- Inter-Satellite Link ISDN -- Integrated Services Digital Network
ISO -- International Standards Organization
ITU -- International Telecommunications Union
ITU-T -- Multimedia Teleconference Standards
IXC -- Interexchange Carrier
JPEG -- Joint Picture Experts Group
Ka-Band
Ku-Band
LAN -- Local Area Network
LATA -- Local Access and Transport Area
L-Band
LCD -- Liquid-Crystal Display
LEC -- Local Exchange Carrier
LEO -- Low Earth Orbit
LMDS -- Local Multipoint Distribution System
Low-Power Satellite
Luminance
Medium-Power Satellite
MEO -- Medium Earth Orbit
Mid Band
Modem
Modulation
MPEG -- Motion Picture Experts Group
MTOPS -- Millions of Theoretical Operations/Second 01/31/00
Multiple Access
Multiplexing
NAS -- Network-Attached Storage
Network Layer
Noise
NTSC -- National Television Systems Committee
OC-N -- Optical Carrier Levels
OSA -- Open Systems Architecture
OSI -- Open Systems Interconnection Reference Model
Packet
Packet Jitter 10/20/00
Packet Loss
PAL -- Phase Alteration System
Perigee
POP -- Point of Presence
Progressive Scanning
QPSK -- Quadrature Phase Shift Keying
RAM -- Randum Access Memory
RBOC -- Regional Bell Operating Company
RF -- Radio Frequency 10/20/00
ROM -- Read Only Memory
SAR -- Specific Absorption Rate (08/27/00)
SDH -- Synchronous Digital Hierachy
SECAM -- Sequential Encoded Color Amplitude Modulation
SONET -- Synchronous Optical Network
Space Segment
Spectrum
STS-N -- Synchronous Transport Signal
T-1 Line
TCP/IP -- Transmission Control Protocol/Internet Protocol
TCP/IP Suite
TDMA -- Time Division Multiple Access
Token-Ring Local Area Network
Transponder
Transport Layer
Unix
USAT -- Ultra Small Aperture Terminal
VGA -- Video Graphics Adapter
VSAT -- Very Small Aperture Terminal 10/20/00
Wideband 10/20/00
Wireless Cable 10/20/00
X-Band 10/20/00
Zulu Time 10/20/00