i recently put a R3 Messaging in with a 1.5 Processor. it worked fine for a few weeks then all of a sudden stopped answering calls. are ther any known compatibilty issues with these 2? ive rebooted, and checked alarms and double checked all programming. if you call the group, it sometimes rings with the beep and sometimes picks up with silence (further troubleshooting shows the frist 5 ports to be busy and the last 3 pickup with silence). the weird thing is that it still is lighting up certain phones for MWI. the green status light is green and looks the thing is operating correctly.