Farmers are demanding Labor indicate when rural areas not earmarked for fibre optic internet access will receive an alternative wireless or satellite broadband service.
The government announced its $43 billion national broadband network would cover 93 per cent of the nation, lifting it from the 90 per cent initially envisaged.
The National Farmers Federation says it believes the remaining seven per cent - mostly in rural and remote areas - will be covered by wireless and satellite.
But maps released by the government showing the network's coverage did not confirm that arrangement, it said.
"We need more detail and guarantees on the specifics for people who live and work in the seven per cent," federation CEO Ben Fargher said.
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"We are not about picking one technology over the other. "We simply want outcomes, want them quickly."
The federation would examine closely the coalition policy when it was released, Mr Fargher said.
