Blacktown is Sydney's first brownfield suburb to be switched on to the National Broadband Network (NBN).
Around 1300 premises are now able to connect to the network, with another 9300 premises to be switched on in the coming months.
The switch-on was launched with a children’s book reading at Max Webber Library. Author Andy Griffiths read extracts from his books via an NBN connection from Optus.
However, the event experienced a technical glitch, with the connection dropping out during the live reading.
“There was obviously a technical glitch there,” Senator Stephen Conroy, communications minister, said.
“Technical glitches happen. You'll have to ask Optus, but they were able to restore it.”
An NBN Co spokesman said the fault was due to a glitch in the audiovisual software rather than the NBN itself, and the connection was restored in seconds.
Optus, which provides the library’s Internet, said the loss of connection was not an Optus issue.
NBN Co has also updated its rollout plan with an extra 1.35 million premises to its three-year rollout plan.
Nearly 190 new towns and groups of suburbs have been added to the plan.