I have a server ed with 1 500v2. I have 180 IP phones registered to the Server Ed. I have 1 SIP trunk working and registered on LAN2. I want to add a second carrier. The carrier has provided me with a Public IP to signal my IP traffic to and a private address to signal from. Question: how can I set up another SIP interface? LAN1 is for IP phones and connection to 500v2 on their network. LAN2 is set to go to Carrier1. I hope I am explaining it correctly.