Could anyone provide guidance on configuring SIP profiles for SIP clients like software phones to access FusionPBX? The goal is to enable external WAN users to connect via an FQDN that resolves to an external IP, while allowing internal LAN users to access it via an internal IP. I attempted this by duplicating an Internal SIP profile, which allowed WAN users to connect, but it disrupted access for internal LAN users. Any advice on achieving this dual accessibility?