→ B, C → D, E → H, I→ M, N → P, Q → Z

3D
Three Dimensional

3G
Third Generation (wireless)

4G
Fourth Generation (wireless)

AC
Alternating Current – per normal mains power

ACPF
Advanced Capacity Planning Forecast

ADSL
Asymmetric Digital Subscriber Line

ADSL2+
Asymmetric Digital Subscriber Line version 2+

AIM
Alternative Investment Market

ALA
Access Locate Agreement or Active Line Access

AMR
Automated Meter Reading

ANFP
Access Network Frequency Plan

APO
Advanced POP Order

ARPU
Average Revenue Per User – usually a monthly figure

ASE
Alberta Stock Exchange

ASIC
Application Specific Integrated Circuit

BASIS
BT Assisted Site Installaion Service

BBUSS
Broadband Britain Umbilical Services Structure – the number after refers to the number of rack space units (i.e.: 3 or 7)
- supports up to 4800 pairs initially, expandable to 9600
- B-Buss3 can have up to 4kW of DC power, B-Buss7 up to 8kW
- B-Buss7SQ = B-Buss7 Square configuration, racks face each other instead of a single line

BBWF
Broadband World Forum (run by the IEC)

BDR
Bonded DSL Rings® (same as DSLRings)

BES
Backhaul Extension Services – Openreach optical/ethernet backhaul

BRF
Cablelink Request Form – backhaul request form

BT
British Telecom

→ B, C → D, E → H, I→ M, N → P, Q → Z