[Users] problem with mediaproxy when PSTN gateway is on a private network.

Hi all, I have a network configuration in which openSER and mediaproxy are on a machine which has a public ip address but my Asterisk PSTN gateway has a private ip address and is running on a linux-vserver. The problem is that when mediaproxy is active all my VOIP calls, internally and over the internet work perfectly but when I try to call a PSTN number it only works when mediaproxy is down. If I try to call through my PSTN gateway having mediaproxy up the softphone takes long time to setup the call and, after the remote phone rings I cannot hear any voice in both directions. I hope you will not come up with answers like "use a VPN" or "publish your PSTN gateway" ;-) Paolo. -- This is my new email address. Please update your address book.