I know, but I just forward the used ports through PFSense to the PBX, handling the SIP traffic.
Good audio and no problems at all.
I use Askozia PBX in VmWare setup... Works like a charm.....
I don't think this has to do with the PBX so much as the natting of SIP ports. We are going to demo OnSIP in the coming weeks and I saw one of the threads pertaining to SIP nat.
I'm just frustrated because this should just work and it's "sort of" working which is worse than not working at all.