HI, we are new to Elastix. We have several offices currently using Trixbox servers for calls, all working OK, but we wanted to try Elastix. We have set up a new system for an office, all seems to work well, except for office to office calls. We have set up the IAX trunks the same as we do with all of our other offices, but cannot call internally From the Trixbox office to the Elastix office. The Elastix office can dial out to other offices. Any ideas?