We’ve been over why this doesn’t work.
Also the “did you get this to work?” and “do you want my configs?” on a three year old question is kind of pointless. Is it still relevant now? As in, is the OP still running FreePBX v12 ? Which version of Asterisk is it running? Since it’s v12 that means 10/11/12 of Asterisk.
Also in May 2016, FreePBX v13 (along with Asterisk 13) was the main focus with v12 being retired. So even then the answer might have been to upgrade to a more current version of FreePBX.
FreePBX v14 on SNG7 is nothing like FreePBX v12 on CentOS 5. There’s been a complete overhaul of FreePBX between 12 and 14 (even 12 and 13). Numerous updates have been done, bugs fixed, new features released that may have deprecated old features.
Also, if you read this tread almost no real debugging or troubleshooting was done. The last reply was the OP being told that they should look at Digum’s stuff for answers and to message someone who seemed to know Digium stuff well. Not sure any of that was done.
I’m not sure why 2019 has seen a trend of people reviving 2-3+ year old posts over an issue that is 90% likely to not even apply to current deployments because, updates, version changes and all that. A FreePBX system setup in 2015 will not be the same as a FreePBX system setup in 2019.