NBN Co, the operator of the National Broadband Network, says it welcomes any additional options the ACCC may identify through its Access Pricing Inquiry to promote competition and the interests of customers.

Operators of traffic signals, automatic teller machines and a range of other specialised devices can now connect to select services over the National Broadband Network through their retail service providers.

The minister responsible for delivery of the national broadband network says the introduction of 5G services in Australia is unlikely to pose a significant threat to the NBN Co's business plan – and has swept aside "premature" talk about privatisation of the network.