Great Q1, strong 2017, even without G.fast. Q1 is usually slow at Adtran, but they are actually up Q4 2016 to Q1 2017. It's 20% higher than Q1 2016. Deutsche Telekom is buying lots of vectored DSL, as is an American, I believe Century. AT&T is laying 3M lines a year of fiber home. NBN in Australia is finally gearing up with vectoring and G.fast. All buy from both Adtran and another vendor, so it's not easy to confirm which was the primary contributor.
Tom Stanton on the quarterly call was optimistic.