Standard technical phone screen, but its execution could have been better in a few ways: 1. The interviewer had an accent, which on its own would have been fine, but he was using speakerphone in a conference room so it was difficult to hear him. Anyone who has done enough phone interviews knows what I'm talking about: there's a reverberation effect that really blurs the audio. 2. The interviewer gave a question that was fairly visual because it involves doing things on a map (think a cartographic map of land/sea, not a computer science map), which doesn't lend itself well to conveying ideas over a phone. The question would have been more suitable for an in-person interview with a whiteboard so you can point and draw.