Helping Deutsche Telekom stay connected 24/7

In its first full year providing technical services to Deutsche Telekom, ISS achieved something that the customer has never experienced before – 0% unplanned downtime – an impressive achievement that gave the German population and emergency services unbroken internet and mobile connectivity in 2020, a year when it was needed most.


12 million 

alerts in 2020


service visits


unplanned downtime

I've worked with DTAG in various roles for 48 years. In that time, I’ve never seen a year with 0% unplanned downtime. Now, with the ISS and DTAG partnership, I have – and I want another one next year.

Michael Herbergs, ISS TFM Director

All the challenges concerning our infrastructure have been sorted out immediately to avoid power failure. Many thanks to ISS for a great performance.

Power & Air Solutions spokesperson, Deutsche Telekom

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