First of all, NBN Co may in some cases send out a technician to assess the exterior of your property prior to the actual installation day. Think of this as scoping out the work, because that way they can sort out where cables may need to be arranged, any unusual physical obstacles (trees, rocks, hills, other buildings) that may impact the difficulty of the job or time taken to get it done and so on.
While precise timing varies, because property sizes and challenges can vary, this typically takes between 45 minutes to one and half hours, but you don’t strictly have to be home while this is happening. If the technician notes any particular issues with the installation, this pre-check will allow them to notify your ISP – and in turn you – as it may affect the date they’re able to do the actual installation. If you are home, in some cases for some installs, they may ask to do some preparatory installation work to make it simpler on the actual install day.
You should also be advised of your installation day. It is vital that you (or an authorised person over the age of 18) is present for the entire day, as the installation involves both street work and the installation of cabling and NBN devices in and on your property.
Installations vary, but NBN Co’s estimates put the typical FTTN to FTTP upgrade at around three to four hours. This may involve a quantity of drilling and other noisy work, and in some cases it may be necessary to temporarily cut power to the property.
Street cabling may need to be modified, but the upgrade will also involve installation of two key pieces of equipment on your property. The NBN technician should advise you on the best locations for these. In some cases there may be an element of choice as to positioning, but for some property and wall types it may only be possible to locate devices in a single location. The NBN installation will involve installing an NBN Utility Box (AKA a Premises Connection Device or PCD) to the exterior of your property as well as a NBN Connection box (AKA Network Termination Device, or NTD) to the inside of your property. It’s the NTD that you’ll then connect a router to in order to connect to the actual NBN once the installation is completed.