BT is to provide super-fast broadband to 19,000 athletes and officials based at the Olympic Village in London next summer.
All residents at the east London site for the London 2012 Olympic and Paralympic Games will be equipped with a free 100Mb fibre broadband connection.
BT is to deliver the service as part of its role as the official communications services partner for London 2012.
The broadband provider will deliver fibre-to-the-premises (FTTP) technology to approximately 2,800 apartments across 65 blocks.
And with more than ten months still to go until the opening ceremony, more than three-quarters of the required communications infrastructure is already in place.
Meanwhile, all 550 athletes and officials staying at the Olympic Sailing Venue on the Isle of Portland, near Weymouth, will also receive free fibre broadband.
BT's fibre-to-the-cabinet (FTTC) technology will be used to deliver this 40Mb to the Dorset site.
The two networks will remain in place post-2012, and be available to other broadband providers on an open, wholesale basis.
Chris Clark, Director of BT's London 2012 programme, said the firm is "extremely proud" of its status as the broadband services provider for the Olympic and Paralympic Games.
"Supporting the communications needs of athletes during the Games is a central part of our role," he stated.
"Through the free broadband service we are providing, the athletes will be able to keep in close contact with friends and family, without worrying about costs."
Mr Clark said the fibre network will be a lasting legacy, providing local residents and businesses with super-fast broadband speeds long after the Games have drawn to a close.
"It's all part of BT's goal to make London 2012 the most connected Games ever," he added.
BT's Openreach division is aiming to roll out fibre broadband services to up to two-thirds of the UK by the end of 2015.
More than five million premises already have access to the technology and this is set to rise to ten million by 2012.