I’m still checking this issue and I wonder if someone could help me.
I have a freepbx server and I’m making calls with VOXIP GVT.
It turns out that when you make a call using G729 codec connection ends up being duplicated.
Speaking with a GVT manager he informed me that my PBX sent this 2 INVITE followed with a difference of 5 milliseconds.
When I use G711 codec it does not.
Someone has gone through this?
Could you assist me?