Abbreviations

ACR        Attenuation-to-Crosstalk Ratio
ADO        Auxiliary Disconnect Outlet
ADSL      Asynchronous Digital Subscriber Line
ADSL2+  Asynchronous Digital Subscriber Line 2+
ANSI       American National Standards Institute
ATM        Asynchronous Transfer Mode
AWG       American Wire Gauge
BD           Building Distributor
BER        Bit Error Rate
BFOC     Bayonet Fiber Optic Connector
BICSI      Building Industry Consulting Service International
Bps         Bits per second
CAT3      Category 3
CAT5      Category 5
CAT5e    Category 5 Enhanced
CAT6      Category 6
CD           Campus Distributor
CDDI®    Copper Distributed Data Interface
CEDIA     Custom Electronics Design & Installation Association
CM          Common Mode
CO          Central Office
coax        Coaxial Cable
CP           Consolidation Point
CPE         Customer Premises Equipment
CSA        Canadian Standards Association
cULus® UL® Listed for Canada and the United States
dB           Decibel
DD           Distribution Device
DNS        Domain Name Server
DSL         Digital Subscriber Line
DTMF      Dual Tone Multi-Frequency
DTV         Digital Television
EF           Entrance Facility
EIA          Electronic Industries Alliance
ELFEXT Equal Level Far-End Crosstalk
EMC        Electromagnetic Compatibility
EMIEMR Electromagnetic Interference Electromagnetic Radiation
ER           Equipment Room
FCC        Federal Communications Commission
FD           Floor Distributor
FDDI®     Fiber Distributed Data Interface
FEXT       Far-End Crosstalk
FIPSPUB                Federal Information Processing Standard Publication
ft             Feet
FTP         Foil Twisted-Pair
Gbps      Gigabit Per Second
GHz        Gigahertz
HC           Horizontal Cross-connect
HDTV      High-Definition Television
HVAC      Heating Ventilation and Air Conditioning
Hz           Hertz IC Intermediate Cross-connect
IDC          Insulation Displacement Connection
IDF          Intermediate Distribution Frame
IED          International Electrotechnical Commission
IEEE®     Institute of Electrical and Electronic Engineers®
IP             Internet Protocol
ISDN       Integrated Services Digital Network
ISO         International Standards Organization
JTC         Joint Technical Committee
Kbps       Kilobit per second
kHz         Kilohertz
Km          Kilometer
KTS         Key Telephone System
LAN        Local Area Network
lbf           Pounds force
LEC         Local Exchange Carrier
LED         Light Emitting Diode
lx             Lux
m             Meter
Mbps      Megabits per second
MC          Main Cross-connect
MDF        Main Distribution Frame
MHz        Megahertz
MHzkm   Megahertz kilometer
mm         Millimeter
MMJ        Modified Modular Jack
MT-RJ     Mechanical Transfer Registered Jack
MuTOA   Multi-user Telecommunications Outlet Assembly
NEC®      National Electrical Code®
NEMA®   National Electrical Manufacturers Association
NEXT      Near-End Crosstalk
NFPA®   National Fire Protection Association®
nm          Nanometer
PBX         Private Branch Exchange
POTS      Plain Old Telephone Service
PVC         Polyvinyl Chloride
RBOC     Regional Bell Operation Company
RCDD     Registered Communications Distribution Designer
RF           Radio Frequency
RJ           Registered Jack
RMS        Rock Mount Space
SC           Subscriber Connector
SCTE      Society of Cable Telecommunications Engineers
ScTP       Screened Twisted-Pair
SDTV      Standard Definition Television
SOHO     Small Office Home Office
STP         Shielded Twisted-Pair
TIA          Telecommunications Industry Association
TO           Telecommunications Outlet
TP           Transition point
TPDDI® Twisted-Pair Distributed Data Interface
TP-PMD Twisted-Pair Physical Media Dependent
TSB         Telecommunications System Bulletin
UL®        Underwriters Laboratories Inc.®
UPS         Uninterruptible power supply
USOC     Universal Service Order Code
UTP         Unshielded Twisted-Pair
VoIP        Voice Over Internet Protocol
Vrms       Volts root mean square
WA          Work Area
μm           Micron; one millionth of a meter (0.000001); also micrometer
Ω             Ohm