NBN Co is conducting upgrade works to its fixed wireless network on Kangaroo Island.
The works have resulted in short Internet outages in locations including Kingscote in recent days.
Users hooked up to non NBN services, including Beam, and also ADSL and satellite services are not impacted on by the works.
A NBN spokesperson said the works were necessary and the outages were being kept to a minimum and short periods to minimise impact.
The works on parts of the Island will continue until May 1.
"The works are part of our ongoing capacity upgrade program and will involve upgrading the fixed wireless link between the Cape Jervis tower and the towers on the Island," the NBN spokesperson said.
"The towers will need to be powered down in order to perform the upgrades and works will be restricted to daylight hours to comply with OH&S constraints relating to climbing and working on and around towers to install equipment.
"The upgrade works are scheduled to be conducted on the Kingscote and Kingscote Central towers on April 12, 13 and 15 with intermittent service interruptions expected during this time.
"We will resume the provision of normal internet services for short periods on these works days whenever it is possible to do so and we will endeavour to complete the upgrade works as quickly as possible."
Further upgrade works will take place on the Cape Jervis, American River, Kingscote, Emu Bay South, Nepean Bay West, Kingscote Central and Penneshaw towers from April 16-18, April 23-24, and April 30-May 1.
"Again, we will do our best to restore internet services for short periods during these works days whenever it is possible to do so and we will endeavour to complete the upgrade works as quickly as possible," the spokesperson said.
"Our capacity upgrade program is delivering strong results, leading to better, more consistent and reliable service to customers.
"We apologise for the inconvenience this may cause to customers and we ask the community for its patience while these important works are carried out."