[Freeswitch-users] trunk without authentication

Hello FS users, Is it possible in FS to allow all calls from a particular IP address without authentication? like in asterisk with insecure port, invite. I tried to add a new carrier in /usr/local/freeswitch/conf/sip_profiles/external/new-carrier.xml <include> <gateway name="new-carrier"> <param name="username" value="anything"/> <param name="password" value="anything"/> <param name="realm" value="carrier.ip.address"/> <param name="register" value="false"/> <param name="caller-id-in-from" value="true"/> </gateway> </include> But after restart it stil sends 407 Proxy Authentication Required to the carrier. Is there any way to trust the carrier IP?