Hi, I have a RB2011 with 6.5 OS on it. I’m using pptp VPN to connect my remote soft phones to the PBX. The problem is that after around 20 seconds, the audio portion of the call, drops. If I create a port forward rule on the router and connect my softphones that way (without the vpn) I have no issues. The problem is when I connect the softphones thru the VPN. Any ideas?
We have seen such problem with specific SIP client software. Is this a phone, or a software on your mobile? Try other software for comparison