Austrian construction company Strabag has agreed to buy Deutsche Telekom's facility management unit. Deutsche Telekom Immobilien und Service (DeTeImmobilien) employs more than 6,000 people - 5,600 in Germany - and it generated revenues of about EUR 1bn in the 2007 financial year. DeTeImmobilien main customer is Deutsche Telekom. Both sides agreed not to disclose the investment volume.