It will take three to five years for Huawei to address security issues raised by the UK government, the company has said.
The Chinese firm, which has earmarked $2bn (£1.5bn) for the process, outlined the timetable in a letter to MPs.
Huawei, the world’s biggest producer of telecoms equipment, faces allegations that its equipment could pose a security risk, which it denies.
Last year a UK government report highlighted some areas of concern.
The letter was sent last week to MPs on the Commons Science and Technology Committee, but made public on Wednesday. In it, Ryan Ding, president of Huawei’s carrier business group said the process of adapting its software and engineering processes to meet the UK’s requirements was “like replacing components on a high-speed train in motion”.