Is it possible to increment a call group (Max_Calls) from one server to the next server? I'm trying to set a maximum call limit between two facilities (2 Asterisk servers) using Set Group. I want the limit to be set at 4. The problem with the code that I have in place, is it allows for 4 on each server, hence the possibility of maxium of 8 concurrent calls. I need to be able to, when 1 call is placed, that each server sets it's Max_Calls to 1, and increases for each additional call. My code snippet below: exten => _42XX,1,SetGroup(Max_Calls) exten => _42XX,n,NoOP(Active Calls: ${GROUP_COUNT(Max_Calls)}) exten => _42XX,n,GotoIf($[ ${GROUP_COUNT(Max_Calls)} > 4 ]?103) exten => _42XX,n,Dial(IAX2/bc.asterisk:xxxx@192.168.102.15/${EXTEN},,t) exten => _42XX,103,Congestion() Is it possible to SetGroup(Max_Calls) on in bound? Any suggestion? Thanks! Doug