I executed the sofia global siptrace on command and get the following error
2020-10-19 07:18:34.576508 [DEBUG] sofia.c:4597 sip-ip [192.168.2.215] 2020-10-19 07:18:34.576508 [DEBUG] sofia.c:4597 ext-rtp-ip [103.25.231.107] 2020-10-19 07:18:34.576508 [DEBUG] sofia.c:4597 ext-sip-ip [103.25.231.107] 2020-10-19 07:18:34.576508 [DEBUG] sofia.c:4597 rtp-timeout-sec [300] 2020-10-19 07:18:34.576508 [WARNING] sofia.c:5192 rtp-timeout-sec deprecated use media_timeout variable. 2020-10-19 07:18:34.576508 [DEBUG] sofia.c:4597 rtp-hold-timeout-sec [1800] 2020-10-19 07:18:34.576508 [WARNING] sofia.c:5199 rtp-hold-timeout-sec deprecated use media_hold_timeout variable. 2020-10-19 07:18:34.576508 [DEBUG] sofia.c:4597 tls [false] 2020-10-19 07:18:34.576508 [DEBUG] sofia.c:4597 tls-only [false] 2020-10-19 07:18:34.576508 [DEBUG] sofia.c:4597 tls-bind-params [transport=tls] 2020-10-19 07:18:34.576508 [DEBUG] sofia.c:4597 tls-sip-port [5081] 2020-10-19 07:18:34.576508 [DEBUG] sofia.c:4597 tls-passphrase [] 2020-10-19 07:18:34.576508 [DEBUG] sofia.c:4597 tls-verify-date [true] 2020-10-19 07:18:34.576508 [DEBUG] sofia.c:4597 tls-verify-policy [none] 2020-10-19 07:18:34.576508 [DEBUG] sofia.c:4597 tls-verify-depth [2] 2020-10-19 07:18:34.576508 [DEBUG] sofia.c:4597 tls-verify-in-subjects [] 2020-10-19 07:18:34.576508 [DEBUG] sofia.c:4597 tls-version [tlsv1,tlsv1.1,tlsv1.2] 2020-10-19 07:18:34.576508 [INFO] sofia.c:5993 Setting MAX Auth Validity to 0 Attempts 2020-10-19 07:18:34.576508 [NOTICE] sofia.c:6160 Started Profile external [sofia_reg_external] 2020-10-19 07:18:34.576508 [DEBUG] sofia.c:3134 Creating agent for external 2020-10-19 07:18:34.576508 [DEBUG] sofia.c:3253 Created agent for external 2020-10-19 07:18:34.576508 [DEBUG] sofia.c:3302 Set params for external 2020-10-19 07:18:34.576508 [DEBUG] sofia.c:3349 Activated db for external 2020-10-19 07:18:34.576508 [INFO] switch_core_sqldb.c:1870 sofia:external Starting SQL thread. 2020-10-19 07:18:34.576508 [DEBUG] sofia.c:3387 Starting thread for external 2020-10-19 07:18:34.576508 [DEBUG] sofia.c:3034 Launching worker thread for external 2020-10-19 07:18:34.576508 [NOTICE] sofia_reg.c:3426 Added gateway 'MySIP' to profile 'external' 2020-10-19 07:18:34.576508 [NOTICE] sofia_reg.c:3426 Added gateway 'MySIP1' to profile 'external' 2020-10-19 07:18:34.576508 [NOTICE] sofia_reg.c:3426 Added gateway '
example.com' to profile 'external' 2020-10-19 07:18:35.576510 [NOTICE] sofia_reg.c:453 Registering MySIP1 2020-10-19 07:18:35.576510 [NOTICE] sofia_reg.c:453 Registering MySIP 2020-10-19 07:18:35.756510 [ERR] sofia_reg.c:2469 MySIP1 Failed Registration with status Service Unavailable [503]. failure #1 2020-10-19 07:18:35.756510 [ERR] sofia_reg.c:2469 MySIP Failed Registration with status Service Unavailable [503]. failure #1 2020-10-19 07:18:36.576508 [WARNING] sofia_reg.c:510 MySIP1 Failed Registration [503], setting retry to 5 seconds. 2020-10-19 07:18:36.576508 [WARNING] sofia_reg.c:510 MySIP Failed Registration [503], setting retry to 30 seconds. 2020-10-19 07:18:42.596508 [NOTICE] sofia_reg.c:453 Registering MySIP1 2020-10-19 07:18:42.956509 [ERR] sofia_reg.c:2469 MySIP1 Failed Registration with status Service Unavailable [503]. failure #2 2020-10-19 07:18:43.596508 [WARNING] sofia_reg.c:510 MySIP1 Failed Registration [503], setting retry to 5 seconds. 2020-10-19 07:18:49.596509 [NOTICE] sofia_reg.c:453 Registering MySIP1 2020-10-19 07:18:49.956507 [ERR] sofia_reg.c:2469 MySIP1 Failed Registration with status Service Unavailable [503]. failure #3 2020-10-19 07:18:50.596510 [WARNING] sofia_reg.c:510 MySIP1 Failed Registration [503], setting retry to 5 seconds.