Elastix 1.3-2 I am trying to setup a trunk to a SIP trunking provider. My provider requires that the SIP traffic to them originate from one of my public IP addresses. I have my Elastix box behind my firewall on my internal LAN. When I attempt to place an outbound call, I get the "All circuits are busy" message. Wireshark shows the following INVITE: INVITE sip:firstname.lastname@example.org;user=phone, with session description My sip_nat.conf looks like this: nat=yes externip=63.x.x.x localnet=192.168.0.0/255.255.0.0 Is there something else I am missing? How can I get the INVITE message to use my external IP instead of the internal one? Thanks!