I’m still trying to narrow it down, but occasionally, we have trouble setting up a 3-way conference call on the D50 phones. I was wondering if there is a known issue with it before I spend too much time trying to replicate a specific case. It seems to happen only sometimes when you have two calls are on hold, and try to conference them together. It just resumes the highlighted call. Pressing the conference button again puts them both on hold, and I can’t seem to figure out a combination of arrow keys between the two calls, and conference button presses that will bridge the calls.