The Red Button offers news and sport text services as well as extra channels during special events
The BBC could close its Red Button services as part of £150m of cuts.
Replacing BBC Ceefax, it offers news and sport text services as well as extra channels during events such as Wimbledon and Glastonbury.
A £35m cut is also being made to sports rights.
The BBC has already lost the rights to the Open Golf Tournament and while no event has been officially earmarked, it could throw doubt on the corporation’s coverage of sports such as F1 racing.
The BBC’s TV budget is also being reduced by £12m, but BBC drama and shows such as Strictly Come Dancing will be protected from the savings.
The cuts also include 1,000 job losses, which were announced in July.