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
- BRAS
- Broadband Remote Access Server
- CPE
- Customer Premise Equipment (router or modem)
- DSLAM
- Digital Subscriber Line Access Modulator
- DLM
- Dynamic Line Management
- VP
- Virtual Path - a link between an Exchange and the BRAS
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)
- PONR
- Point of Now Return - eg when an engineer is booked and cannot now be cancelled.
BT Fault Locations
- CA
- Fault located at Customer Apparatus
- DT
- Diagnostic Test required to establish fault
- EX
- Fault located in Exchange
- LN
- Fault Located in Local Network
- CE
- Fault located at Customer Equipment. Provides further breakdown of a CA fault
- FU
- Fault Located at Frames Unit. Provides further breakdown of an EX fault.
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
- CDR
- Call Detail Records - Call logs
- SIP:Session Initiation Protocol - Sets up a VoIP call.
- 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
- RIPE
- The Réseaux IP Européens Network - the organisation in Europe who manage IP addresses
- SIM
- Subscriber identity module
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