I have an 2821 Voice bundle. To this CME i connect one 7961G phone and an lot of 7911G phones. Furthermore i have 2 7921 phones connected to the system. I am currently running version 12.4.15T3 but i think it has some bugs in it. Is it maybe better to use the 12.4(11)XJ4 version then the one i am running now ? Any help would be appreciated.