Two telecom giants accused of running a monopoly on Internet access rates in China have pledged to cut charges, people.com.cn reports.

Zhang Guangyuan, vice-director of the Anti-Monopoly Bureau with the National Development and Reform Commission (NDRC), which has been running an investigation into the two companies since November last year, claims the duo have vowed to reduce their service charges.

Zhang said so far China Telecom and China Unicom have increased broadband speeds by 100G and pledged to further lower charges.

"The investigation is not focusing on their Internet access monopoly status, but their abuse of that status," Zhang said.