→ B, C → D, E → H, I→ M, N → P, Q → Z

NCTA
National Cable Television Association

NICC
A standards organisation in the UK

NID
Network Interface Demarcation

NGA
Next Generation Access

NSP
Non-Served Premises

NTCA
National Telecommunications Co-Operative Association

NTE
Network Termination Equipment

NTE5
Network Termination Equipment #5

NTP
Network Termination Point

NTTP
Network Test & Termination Point also known as a Linebox

OBASS
Operational Building Access Security System

OC48
Optical Carrier level 48 (48 multiplexed STS-1’s)

Ofcom
Office of Communications – United Kingdom regulator

OPASTCO
Organization for the Promotion and Advancement of Small Telecommunications Companies

OTA
Office of the Telecoms Adjudicator

OTD
Order Target Date

P2P
Point-to-Point or Pier-to-Pier

PATS
Publicly Available Telephone Service – a VoIP equivalent to POTS

PCP
Primary Connection Point

PCT
Patent Co-operation Treaty

Pedestal
or DP, the little green box on the street corner, typically serves 2-25 houses

PIR
Peak Information Rate – usually defined as the maximum possible downstream bandwidth & is considered to be not continuously available (i.e.: only in bursts)

PLM
Product Line Management

PON
Passive Optical Network

PONR
Point Of No Return

POP
Point Of Presence – a place, generally an exchange, where switching equipment resides & is monitored

POTS
Plain Old Telephone Service

PSTN
Public Switched Telephone Network

→ B, C → D, E → H, I→ M, N → P, Q → Z