Remember thath the GXR2 uses PoE so if there is no activitey fron the lan LED then it might be possible that the lines 7 and 8 (used for power) on the GXR2 might have been terminated improperly at the keypad location burning it out, which is one posibility of the inactivity... also check to makes sure the keypad and the GXR2 all have the latest firmware... does the mac address of all hardware show up?...