Hi There,
For terrestial copper (telephone) data connections; distance from the exchange is your "enemy".
Anything beyond 2 KM is getting problematic.
at 3 KM you are running out of options.
See this site: despite the age, the graph is still valid:
https://crowdsupport.telstra.com.au/...ed/td-p/164080
Beyond that, only wireless(i.e. mobile) or satellite, if either are in coverage, are the answer.
Regards
MK