Glossary

DSL Related

DSL

Digital Subscriber Line

ADSL

Asynchronous Digital Subscriber Line

VDSL

Very-high-bit-rate Digital Subscriber Line

FTTC

Fibre to the Cabinet

FTTP

Fibre to the Premises

TAM

Test Access Module

ADSL

Asymmetric Digital Subscriber Line

BRAS

Broadband Remote Access Server

CPE

Customer Premise Equipment (router or modem)

DSLAM

Digital Subscriber Line Access Modulator

DLM

Dynamic Line Management

BT Fault Terms

KBD

Knowledge Based Diagnostics

KCI

Keep Customer Informed

MFL

Main Fault Location

CA

Customer Apparatus

MBORC

Matters Beyond Our Reasonable Control. Used by BT to indicate that they're suspending normal fix guarantees as some external event has made it impossible to achieve them (e.g. a fire, storms, terror attack).

AI

Action Item

WAC

Work Allocation Controls (team)

Services Related

BT

British Telecom

BTOR

British Telecom Openreach

BTW

BT Wholesale

TTW

TalkTalk Wholesale

DNS

Domain Name System/Server

VoIP

Voice over Internet Protocol

DS

Delegation signer (The record used to identify the DNSSEC signing key of a delegated zone)

IDN

Internationalised Domain Name

IP

Internet Protocol

CQM

Constant Quality Monitoring - the name given to the monitoring graphs used on the control pages and FireBricks

Email Related

POP3

Post Office Protocol, Version 3

IMAP

Internet Message Access Protocol

SMTP

Simple Mail Transfer Protocol

Network Related

MTU

Maximum Transmission Unit

MRU

Maximum Receive Unit

IP

Internet Protocol

TCP

Transmission Control Protocol

PPP

Point to Point Protocol

LCP

Link Control Protocol