I TRIED UPGRADING ACSR1.0 AND R1.1 TO R3 WITH UPGRADE CARD.UPGRADE WAS SUCCESSFULL ,BUT HAVING A PROBLEM WITH THE UPGRADED PROCESSORS.THE PROCESSOR WORKS FINE UNTIL YOU ADD ANY VOICEMAIL INTO THE 5 SLOT CARRIER,EVEN WITHOUT THE VOICEMAIL BEING ASSIGNED.DEPENDING ON THE AMOUNT OF PORTS THE VOICEMAIL HAS ,THE PROCESSOR IS LOCKING UP THAT NUMBER OF LINES IN THE SYSTEM.I HOPE SOMEONE CAN TELL ME WHAT IS GOING ON HERE. THANKS IN ADVANCE GUYS....