has anyone set this up with a primus account? they told me to open port 2427 and 16384-32767udp on the firewall. the device they sent me to use is a dlink dvg1120. does this need to be plugged in when i run the 3cx server? also, when connecting to primus they said to use the mac id of the device they sent as the user name with no password. however, the 3cx program doesn't let me save the configuration without a password. thanks for any advice on getting this to work.