I upgrade FreePBX Distro from 15 to 16
When it try to use Zoiper in IAX2 mode, I have the following error:
Call to Phone (302), failed.2:46 PM
Unable to negotiate codec (code: 58)
The solution is in the extension for your Zoiper.
You go to Extesion XXX
Clic to Advenced
Result is Zoiper working