888Voip Engineers have created a Yealink T49G template to Auto-Provision with 3CX. You can find this custom template by clicking here. After downloading this template, you will need to save it into two directories in order for 3CX to synchronize and acknowledge that this file exists:
After saving this ph.xml file into the two directories you will need to restart your 3CX Server in order for these changes to take effect. You will then see the new template under the drop down menus when creating a new extension.