Glossary of NBN Abbreviations

AVC – Access Virtual Circuit
Unique identifier for each NBN service. Used for provisioning, billing, and authentication.

BBU – Battery Backup Unit
Optional device that powers the FTTP NTD for limited time during power outages.

CA Date – Churn Authority Date
Date the customer authorises transfer of a service to a new provider.

CPE – Customer Premises Equipment
Customer-owned hardware such as routers, firewalls, or switches connected to the NBN service.

CRD – Customer Required Date
The date by which the customer requests the service to be delivered or activated.

DFD – Data Flow Detection
NBN system test that checks if data traffic is detected on a new service to confirm activation.

FTTP – Fibre to the Premises
NBN technology type where fibre runs directly to the customer premises and terminates on an NTD.

FTTN – Fibre to the Node
NBN technology where fibre runs to a street cabinet (node), then copper connects to the premises.

HFC – Hybrid Fibre-Coaxial
NBN technology using fibre to a node and coaxial cable to the premises.

IPoE – Internet Protocol over Ethernet
Authentication method that uses direct IP assignment over Ethernet without PPPoE encapsulation.

LOC ID – Location ID
Unique identifier for each serviceable location in the NBN system.

ND / NTD – Network Termination Device
NBN-supplied device installed inside the premises that terminates the fibre and provides UNI-D ports.

NSNW – New Service Never Worked
Fault condition where a newly provisioned service has never been operational.

PCD – Premises Connection Device
External termination point installed on the outside of the premises that connects the fibre lead-in.

POI – Point of Interconnect
Location where RSPs interconnect with the NBN network.

PPPoE – Point-to-Point Protocol over Ethernet
Common authentication method using username/password credentials encapsulated in Ethernet frames.

RSP – Retail Service Provider
Telecommunications provider selling services to end users (e.g., via Vocus Wholesale).

SLA – Service Level Agreement
Agreement defining restoration timeframes and service response levels.

eSLA – Enhanced Service Level Agreement
Higher tier SLA option with improved restoration timeframes and priority handling.

UNI-D – User Network Interface – Data
Ethernet port(s) on the NTD used for connecting customer routers.

UNI-V – User Network Interface – Voice
Voice-specific port on legacy NTDs for analogue phone services (not supported on newer FTTP NTDs).