London 2012 chairman Sebastian Coe predicted a "digital Games'' after BT were unveiled as the fifth 'Tier One Partner' of the Olympics.

The company has signed up as the £50 million 'Official Communications Services Partner' of the Olympics and Paralympics, and will be responsible for providing all communications required LOCOG to host the Games.

"We have a wonderful opportunity to stage a 'digital Games' in 2012 and BT will be integral in helping us do that,'' Coe said.

"Technology and communication is going to be a vast operation, starting now and taking us all the way through to Games-time.

"We needed a partner we could absolutely trust to work with us on this journey, one who could provide the technical know-how and creatively explore solutions and opportunities to ensure our Games are the very best they can be.

"BT gives us this and I'm thrilled a company of such heritage is joining us.''

The communications giant will provide all internet access and landlines at sporting venues and associated facilities, as well as meeting the individual requirements of athletes, national committees and media outlets.

Mike Rake, the BT chairman, said: "BT is proud and delighted to provide the communications that will bring the 2012 London Olympic Games and Paralympic Games to so many people.

"BT has supported London 's bid to host the Games from the start, and the whole company is looking forward to working with LOCOG to ensure that 2012 is a fantastic success."

BT also becomes London 2012’s second Sustainability Partner and will work with LOCOG to help stage a sustainable Olympic Games and Paralympic Games. 

BT will use the Games as a platform to discuss and drive the sustainability agenda.

They follow Lloyds TSB, EDF Energy, adidas and British Airways in signing up as a Tier One Partner.