We have a R2 Avaya dect system and have recently been encountering lots of dropped calls and 'out of range' messsages appearing on the handsets. This fault is intermittent. We have replaced all the hardware apart from the base stations. This is our next step. Has anyone had this issue with their dect system? It suggests its a base station issue but when I walk round our site to test the signal strength its strong. I have replaced the PRI , EXP cards , the chasse and the power supply but to no avail.