2018-06-11 16:16:09.099423 [DEBUG] sofia.c:10196 1 acls to check for proxy
2018-06-11 16:16:09.099423 [DEBUG] sofia.c:10201 checking kamailioip against acl proxy
2018-06-11 16:16:09.099423 [INFO] sofia.c:10203 kamailioip is a proxy according to the proxy acl
2018-06-11 16:16:09.099423 [DEBUG] sofia.c:10213 network ip is a proxy
2018-06-11 16:16:09.099423 [DEBUG] sofia.c:10241 IP kamailioip Rejected by acl "proxy". Falling back to Digest auth.
2018-06-11 16:16:09.099423 [WARNING] sofia_reg.c:1792 SIP auth challenge (INVITE) on sofia profile 'internal' for [304@192.168.89.137] from ip kamailioip
2018-06-11 16:16:09.099423 [DEBUG] switch_core_state_machine.c:603 (sofia/internal/301@fusionpbxdomain) State NEW
2018-06-11 16:16:09.159423 [ERR] sofia_reg.c:2616 Cannot locate any authentication credentials to complete an authentication request for realm '"192.168.89.137"'