I have a triple Binatone cordless phone system. The upstairs extension has poor connectivity (caller cannot hear me and/or I cannot hear them, static, break up etc). As I move closer to the main base in the sitting room downstairs, this clears up. There is never an "out of range" message, and I can be right next to the charger base. The manual does not cater for this without an "out of range" message. This sometimes also happens with the extension in the kitchen. I need a phone I can use upstairs, if I wanted to run downstairs to talk on the phone I would have brought a single unit system.