The chief executive of BT Group has said it would be impossible to strip Huawei products out of the UK's telecommunications network within the next decade.
Philip Jansen also warned of outages and possible security risks if the sector was told to curtail all business with the Chinese technology company during the building of the 5G network upgrade.
His comments follow suggestions that a decision on the future of Huawei in the UK is due to be made public by the culture secretary, Oliver Dowden, on Tuesday.
Speaking last week, Mr. Dowden said US sanctions on Huawei were likely to have a significant impact on its ability to play a role in the UK's 5G network.