i
ritical information
ormula/calculation
CP — consolidation point
DAS — distributed antenna system
dc — direct current
EF — entrance facility
EMI — electromagnetic interference
EMT — electrical metallic tubing
EP — entrance point
ER — equipment room
ESS — electronic safety and security
F/FTP — foil-screened foil-screened twist-
ed-pair
F/UTP — foil-screened unscreened twisted-pair
HC (FD) — horizontal cross-connect (floor distributor)
HCP — horizontal connection point
IC (BD) — intermediate cross-connect (building distributor)
ICT — information and communications
technology
IDC — insulation displacement contact
IEC — International Electrotechnical Commission
ISO — International Organization for Standardization
ISP — inside plant
ITU-T — ITU-Telecommunication
Standardization Sector
LoS — line of sight
LSZH — low smoke zero halogen
MAC — media access control
MC (CD) — main cross-connect (campus
distributor)
N/A — not applicable
NEC — National Electrical Code
NEXT — near-end crosstalk
NVP — nominal velocity of propagation
OSP — outside plant
PBB — primary bonding busbar
PBX — private branch exchange
PoE — power over Ethernet
PPE — personal protective equipment
PSACRF — power sum attenuation-to-cross-
talk ratio, far-end
PSNEXT — power sum near-end crosstalk
PTP — point-to-point
RF — radio frequency
S/FTP — overall braid-screened with
foil-screened twisted-pair
S/UTP — braid-screened unscreened
twisted-pair
SCS — structured cabling system
SF/FTP — braid-screened-foil-screened foil
screened twisted-pair
SF/UTP — braid-screened-foil-screened
unscreened twisted-pair
SMA — subminiature A
SP — service provider
SPE — single-pair Ethernet
TBC — telecommunications bonding
conductor
TDR — time domain reflectometer
TE — telecommunications enclosure
TIA — Telecommunications Industry
Association
TR — telecommunications room
U/UTP — overall unshielded twisted-pair
with unshielded twisted-pair
UPS — uninterruptible power supply
USOC — universal service order code
UTP — unshielded twisted-pair