Abbreviations

BHCA

busy hour call attempts

BSS

business support system

CapEx

capital expense

CCDF

complimentary cumulative distribution function

CDF

cumulative distribution function

CI

configuration item

COTS

commercial off the shelf

DA

day ahead

DBMS

database management system

DNS

domain name system

DOA

dead on arrival

DPM

defects per million

EcoMin

economic minimum

EMS

element management system

EoR

end-of-row Ethernet switch

EPO

emergency power off

eTOM

TM Forum's Service Management Framework

ETSI

European Telecommunications Standards Institute

FCAPS

fault, configuration, accounting, performance, security

hr

hour

IaaS

infrastructure-as-a-service

ICT

information and communications technologies

IP

internet protocol

ISO

International Standards Organization (ICT industry) or independent system operator (power industry)

IT

information technologies

ITIL

IT Infrastructure Library, a suite of standards of for IT Service Management

KPI

key performance indicator

KQI

key quality indicator

kW

kilowatt

LMP

locational marginal price

MIPS

million instructions per second, or sometimes meaningless information about performance of a system

MOS

mean opinion score

MW

megawatt

NERC

North American Electricity Reliability Corporation

NIST

US National Institute of Standards and Technologies

NOC

network operations center

OAMP

operations, administration, maintenance and provisioning

OpEx

operating expense

OS

operating system

OSI

open systems interconnection

OSS

operations support system

PJM

PJM Interconnection, www.pjm.com

PM

performance management

RPO

recovery point objective

RT

real time

RTO

recovery time objective (ICT industry), or regional transmission organization (power industry)

SDN

software-defined networking

SI

International System of Units

SKU

stock-keeping unit

SLA

service level agreement

SLO

service level objective

ToR

top of rack Ethernet switch

vCPU

virtual central processing unit core

VIM

the cloud service provider's Virtualized Infrastructure Manager

VM

virtual machine

VN

virtual network

VoLTE

voice over LTE