Hi, I see that some time the internal phone (extensions) give the problem that not hang-up the current call and use one more connections (in VoIP). I think the problem is that the person hang-up and dial one new number too quickly, so he make two call in same time (but use only one). I think to resolve the problem with set the call-limit (in extension) to 1, but the default number (4) don't change. Every time I apply the modify to one this parameter re-change to four. Some person have same problem o have one solution for me?