Status of Red audio Experiment

Hi @Boris_Grozev,
Few month ago you did a very promising experimentation on audio streams using the RED format :Implementing REDundant audio on an SFU - webrtcHacks.

Could you tell us what is the current status of this mechanism in Jitsi ?
Have you done more experimentations or maybe it is already used in production environment ?

Regards,
Damien Fetis.