A few days ago I stumbled across an unreleased Telnyx source module for CID Superfecta. To install, just copy the file to
/var/www/html/admin/modules/superfecta/sources
You will get warnings about a modified file after installing this. If you want to avoid that, turn off module signature checking under Advanced Settings before installation.
It works fine for me without any modification on FreePBX 14 Distro.
You must have a paid account with Telnyx to use this.
This link will give you a link to the pull request for the file:
https://issues.freepbx.org/browse/FREEPBX-18814
If you would like to see this module released please vote for this issue at the link above.