Optus is offering to compensate customers that have not got the National Broadband Network speeds they were promised.
Chief executive Allen Lew did not say how many customers have been affected as he presented the telco's half year financial results, but confirmed the telco is working with the consumer watchdog.
"Optus is taking action to provide appropriate remedies to those customers where it has been confirmed that the underlying NBN service cannot deliver the speed they signed up for," Optus said in a statement.
It comes a day after Telstra offered to compensate around 42,000 customers after admitting it may have breached consumer law by promoting NBN speeds that it was not capable of delivering.
Optus blamed the slower than advertised spends on underlying access issues for fibre to the node (FFTN) and fibre to the building (FTTB) services.
"This is an industry wide issue," Mr Lew told reporters.
"We will make sure our customers get the service that they have purchased and if not we will look at providing the appropriate remedies for them on an individual and case by case basis."
Optus recorded 72,000 new NBN customer activations and migration payments in the six months to September 30, bringing its total NBN broadband customers to 351,000.
The company said work to improve its mobile network helped attract 75,000 new mobile customers in the half year, but also contributed to a fall in profit.
Optus made a profit of $347 million in the six months to September 30, down 2.7 per cent from a year ago, despite a rise in earnings and revenue.
The company holds a 30 per cent share of the mobile revenue market, and its 4G customer base stood at 6.1 million at the end of September.
Share
