• Local loop

0–9

• 66 block
• 110 block

A

• Aerial insert

B

• Basic exchange telecommunications radio service
• Bit-stream access
• Bridge tap

C

• Carrier preselect
• Category 1 cable
• Chat line
• Circuit ID
• CorDECT
• CT2
• Customer service unit

D

• Data access arrangement
• DECT
• DECT-2020
• Demarcation point
• Digital access carrier system
• Digital loop carrier
• Distributed switching
• Dry loop

E

• EPON Protocol over Coax
• Ethernet extender
• Ethernet in the first mile
• Ethernet over fibre
• Ethernet over twisted pair
• Extension (telephone)

F

• Fiber to the telecom enclosure
• Fiber to the x
• FTTLA

H

• HomePNA

L

• Landline
• Last mile (telecommunications)
• Leased line
• Local-loop unbundling
• Loop maintenance operations system
• Loop management system

M

• Metallic path facilities

N

• Network interface device

O

• On-premises wiring
• Optical wireless

P

• Pair gain
• Party line (telephony)
• Permanent signal
• Permitted attached private lines
• Personal Handy-phone System
• Point of interface

R

• Remote concentrator

S

• Serving area interface
• Sub-loop unbundling
• Subscriber loop carrier

T

• Telephone line
• Title 47 CFR Part 68

U

• Unbundled access
• Unbundled network element

V

• V5 interface
• VB5 interface

W

• Wholesale line rental
• Wireless local loop