Sorry for the double post, but I only just saw the August blog, which we install during our rollout. Since it's more relevant here, I will post it here as well (posted it on the april blog before):
Just finished installing the Yealink A30 with CPT18 and VCH51, with the latest (august) update. And I must say it's fantastic, we already liked the MTRoA in March when we starting testing, but this latest release really makes allot of further improvements.
However 1 feature is still "dumb". One or the reasons we chose the Yealink over the Poly, is the dual screen (that and the privacy shutters, which people love). However content is always displayed on screen 2 (HDMI2) instead of Screen 1 (HDMI1), which means that you can no longer interact with the content (/whiteboard) on the touchscreen on the main screen (HDMI1) which is the touchscreen in our case (Dell C55xxQT). So we have to chose every meeting to do a meeting with passive content (and connect HDMI2, with the benefit of split screens), or interacting / whiteboarding in which we can't connect the second screen.