Hello all I'm setting up a simple voip service and I need some help, we currently have an opensips server with RTP Proxy on it, that handles registration for all phones, behind it there's one (soon to be several) freeswitch servers that handle sip trunks, voicemail, ivr and so on. Aside for some problems this seems to be working fine. We now have to collect CDR records and limit calls, do prepaid and so on. What do you think would be better: a)Our current setup opensips for registration rtpproxy (or mediaproxy if we use CDRTool) with freeswitch on the back b)Only have opensips as a load balancer and handle registration and RTP with freeswitch, and collect CDRs and limit there c)handle registration at opensips level and RTP with freeswitch (where would we collect CDRs?) thanks in advance Jose Suero