Cellular signal strength has been an issue at Eddy Street from day one because the building is a large metal box that blocks signals. Plus, the interior rooms and offices have floor-to-ceiling metal walls which further block the signal.
To improve your cellular calling experience, it is strongly recommended to enable WiFi Calling on your mobile phone. This will allow your phone to utilize the eduroam wireless (and even your home wifi if you have bad cell coverage there) and should help with all calls from your phone. Please use these instructions from the OIT on how to turn on WiFi calling for both iPhone and Android phones.