The Yealink Conference Phoness are used in every department at the universty. In my department, it is our main lines. We use it to answer incoming calls and make outgoing calls, transfers, etc. There are sometimes connection issues associated with the line. Often times we have to reboot. Maybe this is a malfunction on our end. However, besides this issue, the Yealink Conference Phones have been a great help in our telemarketing areas- raising funds for student scholarship, sports teams etc.