> Likewise, even the apparently planned outages at my previous location exceeded the 30 minutes. (It's still good, but not that good.)
Yeah, they're starting to do maintenance here now, too (for introducing the 500/200mbps VDSL2), but I've never been with Telekom, and my existing ISPs never had real issues.
To properly measure that you'd have to be constantly trying to use the phone (and power network) that entire time though no? I.e. Your random sample is not representative of when the service was actually available?