CH AA - ACRONYMS AND ABBREVIATIONS Flashcards
1
Q
A/D
A
Analog-to-Digital
2
Q
A&E
A
Architecture and Engineering
3
Q
ABA
A
Architectural Barriers Act
4
Q
ac
A
Alternating Current
5
Q
ACEG
A
Alternating Current Equipment Ground
6
Q
ACK
A
Acknowledgment
7
Q
ACL
A
Access Control List
8
Q
ACR
A
Attenuation-to-Crosstalk Ratio
9
Q
ACRF
A
Attenuation-to-Crosstalk Ratio, far-end
10
Q
ACS
A
Access Control System
11
Q
ACWP
A
Actual Cost of Work Performed
12
Q
ADA
A
Americans with Disabilities Act
13
Q
ADAAG
A
Americans with Disabilities Act Accessibility Guidelines
14
Q
ADF
A
Area Distribution Facility
15
Q
ADO
A
Auxiliary Disconnect Outlet
16
Q
ADPCM
A
Adaptive Differential Pulse Code Modulation
17
Q
ADR
A
Alternative Dispute Resolution
18
Q
ADSL
A
Asymmetric Digital Subscriber Line
19
Q
ADSS
A
All-Dielectric Self-Support
20
Q
AEC
A
- Acoustic Echo Canceller
- Architecture, Engineering, and Construction
21
Q
AES
A
Advanced Encryption Standard
22
Q
AF
A
Audio Frequency
23
Q
AFEXT
A
Alien Far-End Crosstalk
24
Q
AFF
A
Above Finished Floor
25
AGC
Automatic Gain Control
26
AHJ
Authority Having Jurisdiction
27
AHU
Air Handling Unit
28
AI
- Analog Input
| - Articulation Index
29
AIM
Automated Infrastructure Management
30
AM
Amplitude Modulation
31
AMES
Architectural, Mechanical, Electrical, Structural
32
AMI
Alternate Mark Inversion
33
AMSL
Above Mean Sea Level
34
ANEXT
Alien Near-End Crosstalk
35
AO
Analog Output
36
AP
- Access Point
| - Access Provider
37
APC
Angle Physical Contact
38
API
Application Programming Interface
39
AS
Australian Standard
40
ASCII
American Standard Code for Information Interchange
41
ASP
Authorized Service Provider
42
ATM
- Asynchronous Transfer Mode
| - Automatic Teller Machine
43
ATR
All-Thread-Rod
44
ATS
Automatic Transfer Switch
45
AUTONEG
Autonegotiation
46
AV
Audiovisual
47
AWG
American Wire Gauge
48
AWS
Advanced Wireless Services
49
AXT
Alien Crosstalk
50
BACnet®
Building Automation and Control Network
51
BAS
Building Automation System
52
BBC
Backbone Bonding Conductor
53
BBMD
BACnet® Broadcast management Device
54
BC
Bonding Conductor
55
BCT
Bonding Conductor for Telecommunications
56
BCWP
Budgeted Cost of Work Performed
57
BCWS
Budgeted Cost of Work Scheduled
58
BD
Building Distributor
59
BDA
Bidirectional Amplifier
60
BDSL
Bit Rate Digital Subscriber
61
BER
Bit Error Rate
62
BET
Building Entrance Terminal
63
BIBB
BACnet® Interoperability Building Block
64
BIM
Building Information Modeling
65
BMS
Building Management System
66
BN
Bonding Network
67
BNC
Bayonet Neill-Concelman
68
BOM
Bill of Material
69
BPSK
Binary Phase Shift Keying
70
BRI
Basic Rate Interface
71
BSC
Base Station Controller
72
BSS
Basic Service Set
73
BTL
BACnet® Testing Laboratories
74
BTS
Basic Transceiver Station
75
BVLL
BACnet® Virtual Link Layer
76
C
Chrominance Signal
77
CAD
Computer-Aided Design
78
CADD
Computer-Aided Drafting and Design
79
CAFM
Computer-Aided Facility Management
80
CAN
Campus Area Network
81
CAP
Carrierless Amplitude and Phase
82
CAT
Category
83
CATV
Cable TV
84
CBC
Coupled Bonding Conductor
85
CBN
Common Bonding Network
86
CBS
Core Bore Seal
87
CCD
Charge Coupled Device
88
CCK
Complimentary Code Keying
89
cct
Circuit (European)
90
CCTV
Closed Circuit TV
91
CCU
- Coronary Care Unit
| - Critical Care Unit
92
cd
Candela
93
CD
- Campus Distributor
| - Construction Document
94
CDF
Campus Distribution Facility
95
CDMA
Code Division Multiple Access
96
CE
- Common Element
| - Conformité Européene
97
CEBus®
Consumer Electronics Bus
98
CENELEC
Comité Européen de Normalisation Electrotechnique
99
CENTREX
Central Exchange
100
CER
Common Equipment Room
101
CEV
Controlled Environment Vault
102
CFR
Code of Federal Regulations (U.S.)
103
CHCC
Comprehensive Health Care Clinic
104
C/I
Carrier-to-Interface Ratio
105
CI
Circuit Integrity
106
CIA
Confidentiality, Integrity, and Availability
107
CIC
CEBus® Industry Council
108
CII
Critical Infrastructure Industry
109
CIS
Common Intelligibility Scale
110
ckt
Circuit (U.S.)
111
CLEC
Competitive Local Exchange Carrier
112
CM
- Common Mode
- Construction Manager
- Control Module
113
CMP
Communications Plenum
114
CMR
Communications Riser
115
CMRR
Common-Mode Rejection Ratio
116
CMU
Concrete Masonry Unit
117
CMUC
Communications Undercarpet
118
CMX
Communications Residential
119
CO
- Central Office
| - Change Order
120
CON
Certificate of Need
121
COR
Close Observation Room
122
COT
Central Office Terminal
123
CP
Consolidation Point
124
CPE
Customer Premises Equipment
125
CPI
Cost Performance Index
126
CPM
Critical Path Method
127
CPU
Central Processing Unit
128
CPVC
Chlorinated Polyvinyl Chloride
129
CR
Computer Room
130
CRAC
Computer Room Air Conditioning
131
CRC
Cyclic Redundancy Check
132
CRI
Color Rendition Index
133
CRO
Construction Ride Out
134
CRT
Cathode Ray Tube
135
CSI
Construction Specifications Institute
136
CSMA/CA
Carrier Sense Multiple Access with Collision Avoidance
137
CSMA/CD
Carrier Sense Multiple Access with Collision Detection
138
CSU
Channel Service Unit
139
CTCSS
Continuous Tone Coded Squelch System
140
CTR
Common Telecommunications Room
141
CTS
Clear to Send
142
CUE
Concrete Universal Enclosure
143
CWDM
Coarse Wavelength Division Multiplexing
144
D/A
Digital-to-Analog
145
DA
- Distributed Automation
| - Distribution Amplifier
146
DAC
Direct Attach Cable
147
DACR
Digital Alarm Communicator Receiver
148
DACS
Digital Alarm Communicator System
149
DACT
Digital Alarm Communicator Transmitter
150
DARR
Digital Alarm Radio Receiver
151
DARS
Digital Alarm Radio System
152
DART
Digital Alarm Radio Transmitter
153
DAS
- Direct-Attached Storage
| - Distributed Antenna System
154
DAQ
Delivered Audio Quality
155
DB
Design-Build
156
dBa
A-Weighted Decibel
157
dBd
Decibels Related to a Half Wavelength Dipole
158
dBi
Decibels Related to an Isotropic Radiator
159
DBS
Direct Broadcast Satellite
160
dBu
Decibel Unit
161
dc
Direct Current
162
DCIE
Data Center Infrastructure Efficiency
163
DCS
Digital Cellular System
164
DD
- Design Development
- Design Document
- Distribution Device
165
DDC
Direct Digital Control
166
DDS
Dynamic Digital Signage
167
DECT
Digital Enhanced Cordless Telecommunications
168
DEPIC
Dual Expanded Plastic Insulated Conductor
169
DHCP
Dynamic Host Configuration Protocol
170
DI
Digital Input
171
DTC
Data Link Control
172
DM
Differential Mode
173
DMD
Differential Mode Delay
174
DMT
Discrete Multitone
175
DMVPN
Dynamic Multipoint Virtual Private Network
176
DMZ
Demilitarized Zone
177
DNR
Digital Noise Reduction
178
DO
Digital Output
179
DoS
Denial of Service
180
DP
Demarcation Point
181
DS
- Digital Signal
| - Distribution System
182
DS0
Digital Signaling Level Zero
183
DS1
Digital Signal Level One
184
DS1C
Digital Signal Level One C
185
DS2
Digital Signal Level Two
186
DS3
Digital Signal Level Three
187
DSL
Digital Subscriber Line
188
DSP
Digital Signal Processor
189
DSS
Digital Satellite Signal
190
DSSS
Direct Sequence Spread Spectrum
191
DSU
Data Service unit
192
DSX
Digital Signal Cross-Connect
193
DTE
Data Terminal Equipment
194
DTV
Digital TV
195
DVB
Digital Video Broadcast
196
DVD
Digital Versatile Disk
197
DVI-A
Digital Visual Interface - Analog
198
DVI-D
Digital Visual Interface - Digital
199
DVI-I
Digital Visual Interface - Integrated
200
DVMS
Digital Video Management System
201
DVR
Digital Video Recorder
202
DVT
Digital Video Technology
203
E&O
Errors and Omissions
204
E/O
Electronic-to-Optical
205
EAC
Electronic Access Control
206
Eb/NO
Energy Per Bid to Noise Density Ratio
207
EBC
Equipment Bonding Conductor
208
ECTFE
Ethylene Chlorotrifluoroethylene
209
EDA
Equipment Distribution Area
210
EDP
Electrical Distribution Panel
211
EEA
European Economic Area
212
EESS
Earth Exploration-Satellite Service
213
EF
Entrance Facility
214
EFM
Ethernet in the First Mile
215
EFT
Electrical Fast Transient
216
EHF
Extremely High Frequency
217
EIA
Electronic Industries Alliance
218
EIRP
- Effective Isotropic Radiated Power
| - Equivalent Isotropic Radiated Power
219
ELF
Extremely Low Frequency
220
ELFEXT
Equal Level Far-End Crosstalk
221
EM
Electromagnetic
222
EMB
Effective Modal Bandwidth
223
EMC
Electromagnetic Compatibility
224
EMI
Electromagnetic Interference
225
EMP
Electromagnetic Pulse
226
EMR
Electromagnetic Radiation
227
EMS
- Emergency Medical Service
| - Energy Management System
228
EMT
Electrical Metallic Tubing
229
ENI
External Network Interface
230
ENT
Electrical Non-Metallic Tubing
231
EO
Electrical Outlet
232
EoDSL
Ethernet Over Digital Subscriber Line
233
EOLR
End-of-Line Resistor
234
EP
Entrance Point
235
EPO
Emergency Power Off
236
EPON
Ethernet Passive Optical Network
237
EPR
Earth Potential Rise
238
EQ
Equalizer
239
ER
Equipment Room
240
ERP
Effective Radiated power
241
ERRCS
Emergency Responder Radio Coverage Systems
242
ESD
Electrostatic Discharge
243
ESF
Extended Superframe
244
ESMR
Enhanced Specialized Mobile Radio
245
ESN
Electronic Serial Number
246
ESS
- Electronic Security and Safety
| - Electronic Service Set
247
ETSI
European Telecommunications Standards Institute
248
ETL
Electronic Testing Laboratories (Intertek)
249
EV
Earned Value
250
F/UTP
Foil Screened With Unshielded Twisted-Pairs
251
FA
Fire Alarm
252
FACP
Fire Alarm Control Panel
253
FAX
Facsimile
254
FC
- Ferrule Connector
- Fiber Connector
- Fixed Connector
255
FCC
Federal Communications Commission
256
FCS
Frame Check Sequence
257
FD
Floor Distributor
258
FDDI
Fiber Distributed Data Interface
259
FDM
Frequency Division Multiplexing
260
FEC
Forward Error Correction
261
FEP
Fluorinated Ethylene Propylene
262
FEXT
Far-End Crosstalk
263
FHSS
Frequency-Hopping Spread Spectrum
264
FirstNet
First Responder Network Authority
265
FIT
Frame Interline Transfer
266
FLA
Flooded Lead Acid
267
FLS
Fire-Life-Safety
268
FM
Frequency Modulation
269
FMC
Flexible Metal Conduit
270
FMT
Flexible Metal Tubing
271
FO
- Fiber Optic
| - Field Order
272
FOV
Field of View
273
F-PDCH
Forward Packet Data Channel
274
FR
Fire Retardant
275
FRS
Family Radio Service
276
FS
- Factor of Safety
| - Fixed Service
277
FSO
Free Space Optics
278
FTC
Failure to Capture
279
FTP
- File Transfer Protocol
| - Foil Twisted-Pair
280
FTTH
Fiber To The Home
281
FTTO
Fiber To The Office
282
FTTx
Fiber To The X
283
FWHM
Full Width Half Maximum
284
G
Conductance
285
GAN
Global Area Network
286
GbE
Gigabit Ethernet
287
GC
General Contractor
288
GE
Grounding Equalizer
289
GEC
Grounding Electrode Conductor
290
GFCI
Ground Fault Circuit Interrupter
291
GIS
Geographic Information System
292
GMP
Guaranteed Maximum Price
293
GPON
Gigabit Passive Optical Network
294
GPR
- Ground Penetrating Radar
| - Ground Potential Rise
295
GSM
Global System for Mobile Communications
296
GUI
Graphical User Interface
297
HAAT
Height Above Average Terrain
298
HC
Horizontal Cross-Connect
299
HCP
Horizontal Connection Point
300
HD
High Definition
301
HDA
Horizontal Distribution Area
302
HDMI
High-Definition Multimedia Interface
303
HDPE
High Density Polyethylene
304
HDSDI
High-Definition Serial Digital Interface
305
HDSL
High Bit-Rate Digital Subscriber Line
306
HDTV
High Definition TV
307
HF
High Frequency
308
HFC
Hybrid Fiber-Coax
309
HH
Handhole
310
HIPAA
Health insurance Portability and Accountability Act of 1996
311
Hostid
Host Identification
312
HR
Human Resources
313
HR/DSSS
High Rate Direct Sequence Spread Spectrum
314
HSAB
high-Speed Air Blown (Procedure)
315
HSPDA
High-Speed Downlink Packet Access
316
HTTP
Hypertext Transfer Protocol
317
HVAC
Heating, Ventilation, and Air-Conditioning
318
I/O
Input/Output
319
I
- Current
| - In-Phase Signal
320
IAPP
Interaccess Point Protocol
321
IB
Intelligent Building
322
IBC
International Building Code
323
IBM
Isolated Bonding Network
324
IBSS
Independent Basic Service Set
325
IC
- Integrated Circuit
| - Intermediate Cross-Connect
326
ICT
Information and Communications Technology
327
ICU
Intensive Care Unit
328
ID
- Identifier
- Inside Diameter
- Intelligent Device
- Intermediate Distributor
329
IDC
- Initiating Device Circuit
| - Insulation Displacement Connector
330
IDF
Intermediate Distribution Frame
331
IDS
Intrusion Detection System
332
IEC
International Electrotechnical Commission
333
IESS
Integrated Electronic Security Systems
334
IETF
Internet Engineering Task Force
335
IF
Intermediate Frequency
336
IFC
Intrafacility Cabling
337
IG
Isolated Ground
338
ILEC
Incumbent Local Exchange Carrier
339
IMC
Intermediate Metal Conduit
340
IOR
Index of Refraction
341
IoT
Internet of Things
342
IP
- Ingress Protection (e.g., IP52)
| - Internet Protocol
343
IPD
Integrated Project Delivery
344
IPsec
Internet Protocol Security
345
IPTS
Interactive Patient TV System
346
IR
- Infrared
| - Insulation Resistance
347
ISDN
Integrated Services Digital Network
348
ISM
Industrial, Scientific, and Medical
349
ISO
International Organization for Standardization
350
ISOC
Internet Society
351
ISP
- Inside Plant
| - Internet Service Provider
352
IT
Information Technology
353
ITB
Invitation to Bid
354
ITE
Information Technology Equipment
355
ITS
Information Technology System
356
ITU
International Telecommunications Union
357
IW
Inside Wire
358
JCAHO
Joint Commission on Accreditation of Healthcare Organizations
359
JIS
Japanese Industrial Standard
360
JPEG
Joint Photographic Experts Group
361
KSU
Key Service Unit
362
KTS
Key Telephone System
363
KVM
Keyboard/Video/Mouse
364
L2TP/IPSec
Layer 2 Tunneling Protocol / Internet Protocol Security
365
LAD
Link Access Device
366
LC
Latching Connector
367
LCD
Liquid Crystal Display
368
LCE
Limited Common Element
369
LCX
Leaky Coaxial
370
LD
Laser Diode
371
LDP
Local Distribution Point
372
LEC
Line Echo Canceller
373
LEC
Local Exchange Carrier
374
LED
Light-Emitting Diode
375
LEED
Leadership in Energy and Environmental Design
376
LF
Low Frequency
377
LiDAR
Light Imaging Detection and Ranging
378
LLC
Logical Link Control
379
LMDS
Local Multipoint Distribution Service
380
LMR
Land Mobile Radio
381
LMS
Land Mobile Service
382
locap
Low-Capacitance
383
LORAN
Long Range Navigation
384
LoS
Line of Sight
385
LOTO
Lock Out - Tag Out
386
LP
Low Pressure
387
LPC
License Plate Capture
388
LPDA
Log-Periodic Dipole Array
389
LPR
License Plate Recognition
390
LS0H
Low Smoke Zero Halogen
391
LSA
Lotfrei Schraubfei Abisolierfrei
392
LSZH
Low Smoke Zero Halogen
393
LT
Liner Terminal
394
LVD
Low Voltage Disconnect
395
LW
Long Wavelength
396
LWAPP
Lightweight Access Point Protocol
397
MAC
- Media Access Control
| - Move, Add, and Change
398
MAHO
Move Assisted Handoff
399
MAN
Metropolitan Area Network
400
MAP
Mobile Application Part
401
MC
- Main Cross-Connect
| - Metal Clad
402
MCC
Motor Control Center
403
MC-CDMA
Multi-Carrier Code Division Multiple Access
404
MCU
Master Control Unit
405
MD
Main Distributor
406
MDA
Main Distribution Area
407
MDI
Medium Dependent Interface
408
MDP
Main Distribution Panel
409
MDU
Multi-Dwelling Unit
410
MDU-TR
Multi-Dwelling Unit Telecommunications Room
411
MEGB
Main Electrical Grounding Busbar
412
mesh-BN
Meshed Bonding Network
413
MF
Medium Frequency
414
MFD
Mode Field Diameter
415
MGN
Multiground Neutral
416
MH
Maintenance Hole
417
MIB
Management information Base
418
MICE
Mechanical, Ingress, Climatic/Chemical, Electromagnetic
419
MIMO
Multiple Input Multiple Output
420
MIN
Mobile Identification Number
421
M-JPEG
motion-Joint Photographic Experts Group
422
MLT
Multilevel Transmission
423
MM
Multimode
424
MMDS
- Multi-Channel Multipoint Distribution Service
| - Multipoint Microwave Distribution System
425
MMF
Multimode Fiber
426
MOV
Metal Oxide Varistor
427
MP3
Moving Picture Experts Group Layer 3
428
MPEG
Moving Picture Expert Group
429
MPO
Multifiber Push-On
430
MPOE
Minimum Point of Entry
431
MPP
Modular Patch Panel
432
MPTL
Modular Plug Terminated Link
433
MRE
Make Ready Engineering
434
MRI
Magnetic Resonance imaging
435
MS
Mobile Station
436
MSC
Mobile Switching Center
437
MSDS
Material Safety Data Sheet
438
MSS
Meteorological-Satellite Service
439
MTBF
Mean Time Between Failure
440
MTTR
Mean Time to Repair
441
MUTOA
Multi-User Telecommunications Outlet Assembly
442
NA
Numerical Aperture
443
NAC
- Network Admission Control
| - Notification Appliance Circuit
444
NAS
Network Attached Storage
445
NC
- Network Computer
| - Noise Criterion
446
NCS
National CAD Standard
447
NEBS
Network Equipment-Building Systems
448
NEC®
National Electrical Code®
449
NEMA
national Electrical Manufacturers Association
450
NETID
Network Identification
451
NEXT
Near-End Crosstalk
452
NFPA
National Fire Protection Association
453
NI
Network Interface
454
NIC
Network Interface Card
455
NiCd
Nickel Cadmium
456
NICU
National Intensive Care Unit
457
NID
Network interface Device
458
NIST
National Institute of Standards and Technology
459
NMC
Network Management Center
460
NOC
Network Operations Center
461
NOS
Network Operating System
462
NPLFA
Non-Power-Limited Fire Alarm
463
NPSBN
Nationwide Public Safety Broadband network
464
NRC
Noise Reduction Coefficient
465
NRTL
Nationally Recognized Testing Laboratory
466
NRZ
Non-Return-to-Zero
467
NRZI
Non-Return-to-Zero Inverted
468
NT
Network Terminal
469
NTIA
national Telecommunications and Information Administration
470
NTSC
National Television System Committee
471
NVP
Nominal Velocity of Propogation
472
NVR
Network Video Recorder
473
NZS
New Zealand Standard
474
O/E
optical-to-Electronic
475
O&M
operations and Maintenance
476
OBS
Organization Breakdown Structure
477
OC
- Optical Carrier
| - Outlet Cable
478
OCPD
Overcurrent Protection Devices
479
OD
outside Diameter
480
ODBC
Open Database Connectivity
481
OEM
Original Equipment Manufacturer
482
OET
Office of Engineering and Technology
483
OFC
Optical Fiber Conductive
484
OFCG
Optical Fiber Conductive General Purpose
485
OFCP
Optical Fiber Conductor Plenum
486
OFCR
Optical Fiber Conductive Riser
487
OFDM
Orthogonal Frequency Division Multiplexing
488
OFDMA
Orthogonal Frequency Division Multiple Access
489
OFL
Overfilled Launch
490
OFN
Optical Fiber Non-Conductive
491
OFNG
Optical Fiber Non-Conductive General Purpose
492
OFNP
Optical Fiber Non-Conductive Riser
493
OLED
Organic Light-Emitting Diode
494
OLT
Optical Line Terminal/Termination
495
OLTS
Optical Loss Test Set
496
OM
Optical Multimode
497
OM1
Optical Multimode 1
498
OM2
Optical Multimode 2
499
OM3
Optical Multimode 3
500
OM3
Optical Multimode 4
501
ONT
Optical Network Terminal
502
ONU
Optical Netowrk Unit
503
OPM
Optical Power Meter
504
OS
- Operating System
| - Optical Singlemode
505
OS1
Optical Singlemode 1
506
OS2
Optical Singlemode 2
507
OSHA
Occupational Safety and Health Administration
508
OSI
Open System Interconnection
509
OSP
- Office of Strategic Planning and Policy Analysis
| - Outside Plant
510
OSPF
Open Shortest Path First
511
OTDR
Optical Time Domain Reflectometer
512
PA
- Average Power
| - Public Address
513
PABX
Private Automatic Branch Exchange
514
PAD
Packet Assembler/Disassembler
515
PAL
Phase Alternation Line
516
PAM
Pulse Amplitude Modulation
517
PAN
Personal Area Network
518
PB
Polyburylene
519
PB
Pull Box
520
PBB
Primary Bonding Busbar
521
PBCC
Packet Binary Convolutional Coding
522
PBPP
Pathway Barrier Penetration Plates
523
PBX
Private Branch Exchange
524
PC
Physical Contact
525
PCB
Printed Circuit Board
526
PCM
Pulse Code Modulation
527
PCS
Personal Communications System/Service
528
PD
Power Device
529
PDU
- Power Distribution Unit
| - Protocol Data unit
530
PE
- Polyethylene
| - Professional Engineer
531
PERT
Program Evaluation Review Technique
532
PET
Protected Entrance Terminal
533
PF
Power Factor
534
PFAS
Personal Fall Arrest System
535
PFM
Pulse Frequency Modulation
536
PHY
Physical
537
PIC
Plastic Insulated Conductor
538
PID
Passive Infrared Detector
539
PIN
- Personal Identification Number
| - Positive Intrinsic Negative
540
PIR
Passive Infrared
541
PIV
Personal Identification Verification
542
PL
- Performance level
| - Power-Limited
543
PLC
Programmable Logic Controller
544
PLFA
Power-Limited Fire Alarm
545
PM
- Phase Modulation
| - Project Management/Manager
546
PMA
Physical Medium Attachment
547
PMD
Physical Medium Dependent
548
POCSAG
Post Office Code Standardization Advisory Group
549
PoE
Power Over Ethernet
550
POF
Plastic Optical Fiber
551
PON
Passive Optical Network
552
POP
Point of Presence
553
POS
Point of Sale
554
POT
Portable Operator's Terminal
555
POTS
Plain Old Telephone Service
556
POU
Power Outlet Unit
557
PP
Peak Power
558
PPE
Personal Protective Equipment
559
PPM
Pulse Position Modulation
560
PPTP
Point-to-Point Tunneling Protocol
561
PRCS
Permit Required Confined Space
562
PRI
Primary Rate Interface
563
PRR
Pulse Repetition Rate
564
PSAACR-F
Power Sum Attenuation-to-Alien Crosstalk ratio at Far-end
565
PSAACR-N
Power Sum Attenuation-to-Alien Crosstalk Ratio at Near-end
566
PSACR
Power Sum Attenuation-to-Crosstalk Ratio
567
PSACRF
Power Sum Attenuation-to-Crosstalk ratio-Far end
568
PSAFEXT
Power Sum Alien Far-End Crosstalk
569
PSANEXT
Power Sum Alien Near-End Crosstalk
570
PSE
Power Sourcing Equipment
571
PSELFEXT
Power Sum Equal Level Far-end Crosstalk
572
PSIM
Physical Security information Management
573
PSK
Phase-Shift Keying
574
PSNEXT
Power Sum Near-end Crosstalk
575
PSTN
Public Switched Telephone Network
576
PTC
Positive Temperature Coefficient
577
PTP
Point-to-Point
578
PTZ
Pan, Tilt, Zoom
579
PUC
Public Utilities Commission
580
PUE
Power Usage Effectiveness
581
PVC
- Permanent Virtual Circuit
| - Polyvinyl Chloride
582
PWM
Pulse Width Modulation
583
Q
Quadrature Signal
584
QAM
Quadrature Amplitude Modulation
585
QC
Quality Control
586
QoS
Quality of Service
587
QPSK
Quadrature Phase-Shift Keying
588
R/W
Right-of-Way
589
RACE
Rescue, Alarm, Confine, Extinguish
590
RADIUS
Remote Authentication Dial-In User Service
591
RADSL
Rate-Adaptive Digital Subscriber Line
592
RAID
Redundant Array of Independent Disks
593
RARSR
Radio Alarm Repeater Station Receiver
594
RAS
Radio Alarm System
595
RASSR
Radio Alarm Supervising Station Receiver
596
RAT
Radio Alarm Transmitter
597
RBB
Rack Bonding Busbar
598
RBC
Rack Bonding Conductor
599
REX
Request to Exit
600
RF
Radio Frequency
601
RFB
Request for Bid
602
RFI
- Radio Frequency Interface
- Request for Information
- Request for Interest
- Request for Interpretation
603
RFDI
Radio Frequency identification
604
RFoG
Radio Frequency Over Glass
605
RFP
Request For Proposal
606
RFQ
- Request For Qualifications
| - Request For Quotation
607
RG
Radio Grade
608
RGB
- Rack Grounding Busbar
| - Red, Green, Blue
609
RH
Relative humidity
610
RJ
Registered Jack
611
RL
Return Loss
612
RMC
Rigid Metal Conduit
613
rms
Room Mean Square
614
RMU
Rack Mounted Unit
615
RNC
Rigid Non-metal Conduit
616
RO
Remote Office
617
ROI
Return On Investment
618
RPE
Radiation Pattern Envelope
619
RPP
Remote Power Panel
620
RSTP
Rapid Spanning Tree Protocol
621
RTS
Request To Send
622
RU
Rack Unit
623
RZ
Return to Zero
624
2G
Second Generation
625
S/E
Signal to Error
626
S/FTP
Screened/Foil Twisted-Pair
627
S
Siemen
628
Saas
Software as a Service
629
SAC
Security and Access Control
630
SAN
Storage Area network
631
SAP
Service Access point
632
SAT
- Source Address Table
| - Systems Acceptance Test
633
SBB
Secondary Bonding Busbar
634
SBG
Supplementary Bonding Grid
635
SC
Subscriber Connector
636
SCS
Structured Cabling System
637
SCADA
Supervisory Control and Data Acquisition
638
SCO
Synchronous Connection-Oriented
639
SCSI
Small Computer system Interface
640
ScTP
Screened Twisted-Pair
641
SCU
Special Care unit
642
SCUPC
Subscriber Connector-Ultra physical Contact
643
SD
Schematic design
644
SDH
Synchronous Digital Hierarchy
645
SDI
Serial Digital Interface
646
SDK
Software Development kit
647
SDP
Service Discovery Profile
648
SDR
- Software Defined Radio
| - Standard Dimension Ratio
649
SDSL
Symmetrical Digital Subscriber line
650
SECAM
Sequential Couleur Avec Memoire
651
SF/UTP
Overall Braid and Foil Screened with Unshielded Twisted-Pair
652
SFF
Small Form Factor
653
SFP
Small Form Factor Pluggable
654
SHF
Super High Frequency
655
SI
International System of Units
656
SIM
Subscriber Identity Module
657
SLC
Signaling Line Circuit
658
SM
Singlemode
659
SMA
Subminiature A
660
SMF
Singlemode Fiber
661
SMR
Specialized Mobile Radio
662
SMS
Short Message Service
663
SNI
Standard Network Interface
664
SNMP
Single Network management Protocol
665
SNR
Signal-to-Noise Ratio
666
SONET
Synchronous Optical Network
667
SoW
Scope of Work
668
SP
Service Provider
669
SPD
Surge Protection Device
670
SPF
Shortest Path First
671
SPG
Single-Point Ground
672
SPI
Schedule Performance Index
673
SPL
Sound Pressure Level
674
SPP
Serial Port Profile
675
SRL
Structural Return loss
676
SS7
Signaling System No.7
677
SSB
Single Sideband Modulation
678
SSID
Service Set identifier
679
SSO
Single Sign-On
680
ST
Straight Terminus
681
STDM
Statistical Time Division Multiplexing
682
STP
Shielded Twisted-Pair
683
STS
- Shared Tenant Service
- Static Transfer Switch
- Synchronous Transport Signal
684
SVC
Switched Virtual Circuit
685
SWR
Standing Wave Ratio
686
3G
Third Generation
687
3GPP2
Third Generation Partnership Project Two
688
T1
Trunk Level 1
689
T3
Trunk Level 3
690
T&C
Terms and Condition
691
TB
Terminal Block
692
TBB
Telecommunications Bonding Backbone
693
TBBIBC
Telecommunications Bonding Backbone Interconnecting Bonding Conductor
694
TBC
Telecommunications Bonding Conductor
695
TCP
Transmission Control Protocol
696
TCP/IP
Transmission Control Protocol / Internet Protocol
697
TDD
- Telecommunications Device for the Deaf
| - Time Division Dublex
698
TDM
Time Division Multiplexing
699
TDR
- Technology Distribution Room
| - Time Domain Reflectiometer
700
TD-SCDMA
Time Division Synchronous Code Division Multiple Access
701
TE
Telecommunications Enclosure
702
TEBC
Telecommunications Equipment Bonding Conductor
703
TEC
Technology Equipment Center
704
TERM
Terminal
705
TGB
Telecommunications Grounding Busbar
706
TIA
Telecommunications Industry Association
707
TL
Transmission Level
708
TM
Trademark
709
TMGB
Telecommunications Main Grounding Busbar
710
TO
Telecommunications Outlet
711
TP
Transition Point
712
TP-PMD
Twisted-Pair Physical medium Dependent
713
TR
Telecommunications Room
714
TSB
Telecommunications System Bulletin
715
TTY
Teletypewritter / Text Telephone
716
TVL
TV Line
717
TX
Transmitter
718
TXOP
Transmit Opportunity
719
U/FTP
Unshielded Twisted-Pair Cable with Foil Screened Twisted-Pair Conductors
720
U-NII
Unlicensed national Information Infrastructure
721
U/UTP
Unshielded Twisted-Pair Cable With Unshielded Twisted-Pair Conductors
722
UBC
Unit Bonding Conductor
723
UC
Unified Communications
724
UDP
User Datagram Protocol
725
UDS
Uniform Data System
726
UHF
UltraHigh Frequency
727
UMTS
Universal mobile Telecommunications Service
728
UPC
Ultra Physical Contact
729
UPC
Universal Product Code
730
UPS
Uninterruptible power Supply
731
USB
Universal Serial Bus
732
USGBC
U.S. Green Building Council
733
USOC
Universal Service Order Code
734
UTC
Undercarpet Telecommunications Cable
735
UTP
Unshielded Twisted Pair
736
UV
Ultraviolet
737
VAV
Variable Air Volume
738
VCSEL
Vertical Cavity Surface Emitting Laser
739
VDL
Vertical Down Lead
740
VE
Value Engineering
741
VDSL
Very high Bit-Rate Digital Subscriber Line
742
VF
Voice Frequency
743
VFL
Visual Fault Locator
744
VGA
Video Graphics Array
745
VHF
Very high Frequency
746
VLA
Vented Lead-Acid
747
VLAN
Virtual LAN
748
VLF
Very Low Frequency
749
VoIP
Voice Over Internet Protocol
750
VOM
Volt-Ohm-Milliammeter
751
VPN
Virtual Private Network
752
VRLA
Valve-Regulated Lead-Acid
753
VSS
Video Surveillance System
754
VSWR
Voltage Standing Wave Radio
755
WA
Work Area
756
WAN
Wide Area Network
757
WAP
Wireless Access Point
758
WATS
Wide Area Telephone Service
759
WBS
Work Breakdown Structure
760
WCDMA
Wideband Code Division Multiplexing / Multiplexer
761
WEP
Wired Equivalent Privacy
762
WG
Working Group
763
Wi-Fi
Wireless Fidelity
764
WLAN
Wireless LAN
765
WMTS
Wireless Medical Telemetry Service
766
WPAn
Wireless Personal Area Network
767
WW
WireWay
768
xDSL
x Digital Subscriber Line
769
XGA
Extended Graphics Array
770
XLPE
Cross-Linked Polyethylene
771
XML
Extensible Markup language
772
XPD
Cross-Polarization Discrimination
773
ZD
Zone Distributor
774
ZDA
Zone Distribution Area
775
°C
Degree Celsius
776
°F
Degree Fahrenheit
777
A
Ampere
778
AH
Amp Hour
779
amp
Ampere
780
b
Bit
781
b/s
Bit Per Second
782
BTU
British Thermal Unit
783
cfm
Cubit Foot per Minut
784
cm
Centimeter
785
dB
Decibel
786
dB/km
Decibel per Kilometer
787
dBA
Decibel-A-Weighting
788
dBm
Decibel Milliwatt
789
dBmV
Decibel Millivolt
790
dBu
Decibel Unloaded
791
dBV
Decibel Volt
792
dBW
Decibel Watt
793
EHz
Exahertz
794
eV
Electron Volt
795
fe
Foot-Candle
796
fps
Frames Per Second
797
ft
Foot
798
ft²
Square Foot
799
ft³
Cubed Foot
800
Gb
Gigabit
801
Gb/s
Gigabit per second
802
GeV
Giga-Electron Volt
803
GHz
Gigahertz
804
H
- Henry
| - Hour
805
HP
Horsepower
806
Hz
Hertz
807
in
Inch
808
in WC
Inch Water Column
809
in²
Inches Squared
810
K
Kelvin
811
kB
Kilobit
812
kb/s
Kilobit Per Second
813
kcmil
One Thousand Circular Mils
814
KeV
Kilo-Electron-Volt
815
Kg
Kilogram
816
kHz
Kilohertz
817
km
Kilometer
818
km/s
Kilometer Per Second
819
kN
Kilonewton
820
kpa
Kilopascal
821
kV
Kilovolt
822
kVA
Kilovolt-Ampere
823
kW
Kilowatt
824
kWh
Kilowatt Hour
825
lb
Pound
826
lbf
Pound Fource
827
m
Meter
828
m²
Square Meter
829
mA
Milliampere
830
Mb
Megabit
831
Mb/s
Megabit Per Second
832
MCM
One Thousand Circular Mil
833
MeV
Mega-Electron Volt
834
MHz
Megahertz
835
MHz·km
Megahertz·Kilometer
836
mi
Mile
837
mi/s
Mile Per Second
838
Mil
Circular Mil
839
Mm
Megameter
840
mm
Millimeter
841
mm²
Squared Millimeter
842
ms
Millisecond
843
mV
Millivolt
844
mW
Milliwatt
845
N
Newton
846
nm
Nanometer
847
ns
nanosecond
848
Pa
Pascal
849
pF
Picofarad
850
pF/m
Picofarad Per Meter
851
PHz
Petahertz
852
ps
Picoseconds
853
psi
Pounds per Square Inch
854
RU
Rack Unit
855
s
Seconds
856
Tb/s
Terabit per Second
857
THz
Terahertz
858
V
Volt
859
V/m
Volt per Meter
860
VA
Volt-Ampere
861
Vac
Colts Alternating Current
862
Vdc
Volt Direct Current
863
Vpp
Volts Peak-to-Peak
864
Vrms
Volt Root-Mean-Square
865
W
Watt
866
YHz
Yottahertz
867
ZHz
Zettahertz
868
μm
Micron
869
μs
Microsecond
870
μV
Microvolt
871
Symbol: A
Amplitude
872
Symbol: C
Capacitance
873
Symbol: c
Speed of Light
874
Symbol: f
Frequency
875
Symbol: G
Conductance
876
Symbol: I
Current
877
Symbol: L
Inductance
878
Symbol: N
Refractivity
879
Symbol: P
- Atmospheric Pressure
| - Power
880
R
Resistance
881
T
Temperature
882
t
Time
883
Z
Impedance
884
ε
Permittivity
885
λ
Wavelength
886
π
Pie
887
Φ
Phase
