Deutsche Telekom has reportedly carried out a marked reduction in prices for the resale of DSL connections, a report from Handelsblatt said.
The report, citing sources, said the company was aiming to increase the "attraction" of its resale offer and retain its lead in DSL.
It was said to be offering resellers discounts of between 28% and 47% on the regular sale price, according to sources.
Beko, the association of rival companies operating their own networks, had announced that it might lodge a complaint against the offer if the German networks regulator does not step in.
The group said the new contracts enabled resellers to pay less than independent operators who paid for the use of local loops, according to the report.