I changed/masked some IP info and the domain. 6###1 is the Aura Phone and 6###2 is the UCx phone. These are traces from my CM, I will get some from the SM as well but I found there is more info in the CM trace. First trace is UCx --> Aura that works. Second trace is Aura-->UCx that fails.
LIST TRACE – Call from UCx to Aura (completed good)
time data
08:54:54 TRACE STARTED 07/08/2022 CM Release String cold-01.0.890.0-27348
08:54:59 SIP<INVITE sip:6###1@domain.com SIP/2.0
08:54:59 Call-ID: 5c344e1a357f12a31578e8aa763b49d7@domain.com
08:54:59 Calling party trunk-group 600(SIP Trunk) member 156 cid 0x111e
08:54:59 Calling Number & Name 6###2 UCx Phone
08:54:59 dial 6###1
08:54:59 term station 6###1 cid 0x111e
08:54:59 dial 6###1
08:54:59 term trunk-group 600(SIP Trunk) cid 0x111f
08:54:59 dial 6###1
08:54:59 route-pattern 100 preference 1 location ALL cid 0x111f
08:54:59 seize trunk-group 600(SIP Trunk) member 26 cid 0x111f
08:54:59 Calling Number & Name 6###2 UCx Phone
08:54:59 SIP>INVITE sip:6###1@domain.com SIP/2.0
08:54:59 Call-ID: f034de50fecd41ec99a60c298c80cb
08:54:59 Setup digits 6###1
08:54:59 Calling Number & Name 6###2 UCx Phone
08:54:59 SIP<SIP/2.0 100 Trying
08:54:59 Call-ID: f034de50fecd41ec99a60c298c80cb
08:54:59 Proceed trunk-group 600(SIP Trunk) member 26 cid 0x111f
08:54:59 SIP<SIP/2.0 180 Ringing
08:54:59 Call-ID: f034de50fecd41ec99a60c298c80cb
08:54:59 SIP>SIP/2.0 180 Ringing
08:54:59 Call-ID: 5c344e1a357f12a31578e8aa763b49d7@domain.com
08:54:59 ring station 6###1 cid 0x111e
08:54:59 Alert trunk-group 600(SIP Trunk) member 26 cid 0x111f
08:54:59 Alerting party uses private-numbering
08:54:59 G711MU ss

ff ps:20
rgn:2 [###.###.106.29]:13980
rgn:2 [###.###.144.42]:2060
08:54:59 xoip options: fax:T38 modem

T tty:US uid:0x500196
xoip ip: [###.###.144.42]:2060
08:55:02 SIP<SIP/2.0 200 OK
08:55:02 Call-ID: f034de50fecd41ec99a60c298c80cb
08:55:02 SIP>ACK sips:6###1@###.###.80.235:28804;transport=tls;gsid=f
08:55:02 SIP>0341a60-fecd-11ec-9b5d-000c29f6eeee;av-iptol;asm=1 SIP/
08:55:02 SIP>2.0
08:55:02 Call-ID: f034de50fecd41ec99a60c298c80cb
08:55:02 SIP>SIP/2.0 200 OK
08:55:02 Call-ID: 5c344e1a357f12a31578e8aa763b49d7@domain.com
08:55:02 active station 6###1 cid 0x111e
08:55:02 Connected party uses private-numbering
08:55:02 SIP<ACK sip:6###1@###.###.191.30:5061;transport=tls;asm=1;ep
08:55:02 SIP<v=%3Csips:+1208526###1%40domain.com%3Bgr%3D746199641f0b226
08:55:02 SIP<fd260b80ac3633459%3E SIP/2.0
08:55:02 Call-ID: 5c344e1a357f12a31578e8aa763b49d7@domain.com
08:55:02 SIP>INVITE sip:6###2@###.###.106.29:5060;gsid=f0341a60-fecd-
08:55:02 SIP>11ec-9b5d-000c29f6eeee;asm=1 SIP/2.0
08:55:02 Call-ID: 5c344e1a357f12a31578e8aa763b49d7@domain.com
08:55:02 SIP<SIP/2.0 100 Trying
08:55:02 Call-ID: 5c344e1a357f12a31578e8aa763b49d7@domain.com
08:55:02 SIP<SIP/2.0 200 OK
08:55:02 Call-ID: 5c344e1a357f12a31578e8aa763b49d7@domain.com
08:55:02 SIP>INVITE sips:6###1@###.###.80.235:28804;transport=tls;gsi
08:55:02 SIP>d=f0341a60-fecd-11ec-9b5d-000c29f6eeee;av-iptol;asm=1 S
08:55:02 SIP>IP/2.0
08:55:02 Call-ID: f034de50fecd41ec99a60c298c80cb
08:55:02 SIP<SIP/2.0 100 Trying
08:55:02 Call-ID: f034de50fecd41ec99a60c298c80cb
08:55:02 SIP<SIP/2.0 200 OK
08:55:02 Call-ID: 5c344e1a357f12a31578e8aa763b49d7@domain.com
08:55:02 SIP<SIP/2.0 200 OK
08:55:02 Call-ID: f034de50fecd41ec99a60c298c80cb
08:55:02 SIP>ACK sips:6###1@###.###.80.235:28804;transport=tls;gsid=f
08:55:02 SIP>0341a60-fecd-11ec-9b5d-000c29f6eeee;asm=1 SIP/2.0
08:55:02 Call-ID: f034de50fecd41ec99a60c298c80cb
08:55:02 SIP>ACK sip:6###2@###.###.106.29:5060;gsid=f0341a60-fecd-11e
08:55:02 SIP>c-9b5d-000c29f6eeee;asm=1 SIP/2.0
08:55:02 Call-ID: 5c344e1a357f12a31578e8aa763b49d7@domain.com
08:55:05 SIP<BYE sip:6###2@###.###.191.30:5061;transport=tls;asm=1 SI
08:55:05 SIP<P/2.0
08:55:05 Call-ID: f034de50fecd41ec99a60c298c80cb
08:55:05 SIP>SIP/2.0 200 OK
08:55:05 Call-ID: f034de50fecd41ec99a60c298c80cb
08:55:05 SIP>BYE sip:6###2@###.###.106.29:5060;gsid=f0341a60-fecd-11e
08:55:05 SIP>c-9b5d-000c29f6eeee;asm=1 SIP/2.0
08:55:05 Call-ID: 5c344e1a357f12a31578e8aa763b49d7@domain.com
08:55:05 idle station 6###1 cid 0x111e
----------------------------------------------------------------------------------
LIST TRACE Call from Aura to UCx (Failed)
time data
08:56:39 TRACE STARTED 07/08/2022 CM Release String cold-01.0.890.0-27348
08:56:43 SIP<INVITE sips:6###1@domain.com;avaya-cm-fnu=off-hook SIP/2.0
08:56:43 Call-ID: a57_62c845ab-49c30b90254a41x2h5x3o1gx32531d_I6
08:56:43 8746
08:56:43 SIP>SIP/2.0 183 Session Progress
08:56:43 Call-ID: a57_62c845ab-49c30b90254a41x2h5x3o1gx32531d_I6
08:56:43 8746
08:56:43 active station 6###1 cid 0x1123
08:56:43 Calling party uses private-numbering
08:56:43 SIP>SIP/2.0 484 Address Incomplete
08:56:43 Call-ID: a57_62c845ab-49c30b90254a41x2h5x3o1gx32531d_I6
08:56:43 8746
08:56:43 SIP<INVITE sips:6###2@domain.com SIP/2.0
08:56:43 Call-ID: a57_62c845ab-49c30b90254a41x2h5x3o1gx32531d_I6
08:56:43 8746
08:56:43 SIP>SIP/2.0 100 Trying
08:56:43 Call-ID: a57_62c845ab-49c30b90254a41x2h5x3o1gx32531d_I6
08:56:43 8746
08:56:43 dial 6###2 route:UDP|AAR
08:56:43 term trunk-group 600(SIP Trunk) cid 0x1123
08:56:43 dial 6###2 route:UDP|AAR
08:56:43 route-pattern 100 preference 1 location 10/ALL cid 0x1123
08:56:43 seize trunk-group 600(SIP Trunk) member 28 cid 0x1123
08:56:43 Calling Number & Name 6###1 AURA USER
08:56:43 SIP>INVITE sip:6###2@domain.com SIP/2.0
08:56:43 Call-ID: 2e793184fece41ec9a60c298c80cb
08:56:43 Setup digits 6###2
08:56:43 Calling Number & Name 6###1 AURA USER
08:56:43 SIP<ACK sips:6###1@domain.com;avaya-cm-fnu=off-hook SIP/2.0
08:56:43 Call-ID: a57_62c845ab-49c30b90254a41x2h5x3o1gx32531d_I6
08:56:43 8746
08:56:43 SIP<SIP/2.0 100 Trying
08:56:43 Call-ID: 2e793184fece41ec9a60c298c80cb
08:56:43 Proceed trunk-group 600(SIP Trunk) member 28 cid 0x1123
08:56:43 SIP<SIP/2.0 500 Service Unavailable
08:56:43 Call-ID: 2e793184fece41ec9a60c298c80cb
08:56:43 SIP>ACK sip:6###2@domain.com SIP/2.0
08:56:43 Call-ID: 2e793184fece41ec9a60c298c80cb
08:56:43 denial event 1191: Network failure D1=0x9e70 D2=0x26
08:56:43 route-pattern 100 preference 1 location 10/ALL cid 0x1123
08:56:43 dial 6###2 route:UDP|AAR
08:56:43 term trunk-group 601 cid 0x1123
08:56:43 dial 6###2 route:UDP|AAR
08:56:43 route-pattern 100 preference 2 location 10/ALL cid 0x1123
08:56:43 seize trunk-group 601 member 9 cid 0x1123
08:56:43 Calling Number & Name 6###1 AURA USER
08:56:43 INVITE going via Sig Grp 600(SIP Trunk), ignoring called number routing
08:56:43 SIP>INVITE sips:6###2@domain.com SIP/2.0
08:56:43 Call-ID: 2e89938afece41ec9a90c298c80cb
08:56:43 Setup digits 6###2
08:56:43 Calling Number & Name 6###1 AURA USER
08:56:43 SIP<SIP/2.0 100 Trying
08:56:43 Call-ID: 2e89938afece41ec9a90c298c80cb
08:56:43 Proceed trunk-group 601 member 9 cid 0x1123
08:56:43 SIP<SIP/2.0 480 SIPS Not Allowed
08:56:43 Call-ID: 2e89938afece41ec9a90c298c80cb
08:56:43 SIP>ACK sips:6###2@domain.com SIP/2.0
08:56:43 Call-ID: 2e89938afece41ec9a90c298c80cb
08:56:44 denial event 1191: Network failure D1=0x9e70 D2=0x26
08:56:44 term trunk-group 600(SIP Trunk) cid 0x1123
08:56:44 route-pattern 100 preference 2 location 10/ALL cid 0x1123
08:56:44 dial 6###2 route:UDP|AAR
08:56:44 term trunk-group 602 cid 0x1123
08:56:44 dial 6###2 route:UDP|AAR
08:56:44 route-pattern 100 preference 3 location 10/ALL cid 0x1123
08:56:44 seize trunk-group 602 member 75 cid 0x1123
08:56:44 Calling Number & Name 6###1 AURA USER
08:56:44 SIP>INVITE sip:6###2@domain.com SIP/2.0
08:56:44 Call-ID: 2ea52dcfece41ec9af0c298c80cb
08:56:44 Setup digits 6###2
08:56:44 Calling Number & Name 6###1 AURA USER
08:56:44 SIP<SIP/2.0 100 Trying
08:56:44 Call-ID: 2ea52dcfece41ec9af0c298c80cb
08:56:44 Proceed trunk-group 602 member 75 cid 0x1123
08:56:44 SIP<SIP/2.0 500 Service Unavailable
08:56:44 Call-ID: 2ea52dcfece41ec9af0c298c80cb
08:56:44 SIP>ACK sip:6###2@domain.com SIP/2.0
08:56:44 Call-ID: 2ea52dcfece41ec9af0c298c80cb
08:56:44 denial event 1191: Network failure D1=0x9e70 D2=0x26
08:56:44 term trunk-group 600(SIP Trunk) cid 0x1123
08:56:44 route-pattern 100 preference 3 location 10/ALL cid 0x1123
08:56:44 dial 6###2 route:UDP|AAR
08:56:44 term trunk-group 603 cid 0x1123
08:56:44 dial 6###2 route:UDP|AAR
08:56:44 route-pattern 100 preference 4 location 10/ALL cid 0x1123
08:56:44 seize trunk-group 603 member 98 cid 0x1123
08:56:44 Calling Number & Name 6###1 AURA USER
08:56:44 INVITE going via Sig Grp 600(SIP Trunk), ignoring called number routing
08:56:44 SIP>INVITE sip:6###2@domain.com SIP/2.0
08:56:44 Call-ID: 2eba68fcfece41ec9a120c298c80cb
08:56:44 Setup digits 6###2
08:56:44 Calling Number & Name 6###1 AURA USER
08:56:44 SIP<SIP/2.0 100 Trying
08:56:44 Call-ID: 2eba68fcfece41ec9a120c298c80cb
08:56:44 Proceed trunk-group 603 member 98 cid 0x1123
08:56:44 SIP<SIP/2.0 500 Service Unavailable
08:56:44 Call-ID: 2eba68fcfece41ec9a120c298c80cb
08:56:44 SIP>ACK sip:6###2@domain.com SIP/2.0
08:56:44 Call-ID: 2eba68fcfece41ec9a120c298c80cb
08:56:44 denial event 1191: Network failure D1=0x9e70 D2=0x26
08:56:44 term trunk-group 600(SIP Trunk) cid 0x1123
08:56:44 route-pattern 100 preference 4 location 10/ALL cid 0x1123
08:56:44 dial 6###2 route:UDP|AAR
08:56:44 term trunk-group 604 cid 0x1123
08:56:44 dial 6###2 route:UDP|AAR
08:56:44 route-pattern 100 preference 5 location 10/ALL cid 0x1123
08:56:44 seize trunk-group 604 member 202 cid 0x1123
08:56:44 Calling Number & Name 6###1 AURA USER
08:56:44 SIP>INVITE sip:6###2@domain.com SIP/2.0
08:56:44 Call-ID: 2ecfc58fece41ec9a150c298c80cb
08:56:44 Setup digits 6###2
08:56:44 Calling Number & Name 6###1 AURA USER
08:56:44 SIP<SIP/2.0 100 Trying
08:56:44 Call-ID: 2ecfc58fece41ec9a150c298c80cb
08:56:44 Proceed trunk-group 604 member 202 cid 0x1123
08:56:44 SIP<SIP/2.0 500 Service Unavailable
08:56:44 Call-ID: 2ecfc58fece41ec9a150c298c80cb
08:56:44 SIP>ACK sip:6###2@domain.com SIP/2.0
08:56:44 Call-ID: 2ecfc58fece41ec9a150c298c80cb
08:56:44 denial event 1191: Network failure D1=0x9e70 D2=0x26
08:56:44 term trunk-group 600(SIP Trunk) cid 0x1123
08:56:44 route-pattern 100 preference 5 location 10/ALL cid 0x1123
08:56:44 dial 6###2 route:UDP|AAR
08:56:44 term trunk-group 605 cid 0x1123
08:56:44 dial 6###2 route:UDP|AAR
08:56:44 route-pattern 100 preference 6 location 10/ALL cid 0x1123
08:56:44 seize trunk-group 605 member 77 cid 0x1123
08:56:44 Calling Number & Name 6###1 AURA USER
08:56:44 INVITE going via Sig Grp 600(SIP Trunk), ignoring called number routing
08:56:44 SIP>INVITE sip:6###2@domain.com SIP/2.0
08:56:44 Call-ID: 2ee51b10fece41ec9a180c298c80cb
08:56:44 Setup digits 6###2
08:56:44 Calling Number & Name 6###1 AURA USER
08:56:44 SIP<SIP/2.0 100 Trying
08:56:44 Call-ID: 2ee51b10fece41ec9a180c298c80cb
08:56:44 Proceed trunk-group 605 member 77 cid 0x1123
08:56:44 SIP<SIP/2.0 500 Service Unavailable
08:56:44 Call-ID: 2ee51b10fece41ec9a180c298c80cb
08:56:44 SIP>ACK sip:6###2@domain.com SIP/2.0
08:56:44 Call-ID: 2ee51b10fece41ec9a180c298c80cb
08:56:44 idle trunk-group 605 member 77 cid 0x1123
08:56:44 SIP>SIP/2.0 500 Service Unavailable
08:56:44 Call-ID: a57_62c845ab-49c30b90254a41x2h5x3o1gx32531d_I6
08:56:44 8746
08:56:44 idle station 6###1 cid 0x1123