ZRTP IS NOW DEPREICATED and will be removed out of the docs

zrtp_enabled

Created by Duvid Rottenberg, last modified on 2023.02.16

zrtp_enabled

string

This global variable is set by the FreeSWITCH core to the value of the global rtp-enable-zrtp setting in switch.conf.xml. For more information see the SIP TLS page.