MDU – Multi dwelling Unit – i.e. strata
FTTP – Fibre to the Premises – what most of us would have under the Labour NBN plan – fibre run to each dwelling, including apartments.
FTTB – Fibre to the basement – what some of us will get now – a piece of NBN kit is placed in your MDF room/communications cupboard/room & you use existing building wiring to connect to the kit in your MDF room.
OC – Owner’s Corporation
LOCID – NBN speak for a location ID, how they identify your premises.
Registration form for strata for the NBN:
https://www2.nbnco.com.au/mdu/cases/new
Apologies in advance if anything in my post is still unclear. I was trying to be helpful.