Created by Ryan Harris, last modified by Attila Gulyas on 2020.06.01
integer Set the sample rate of the recording.
<action application="set" data="record_sample_rate=8000"/>
TODO https://github.com/signalwire/freeswitch/blob/master/src/mod/applications/mod%5Fdptools/mod%5Fdptools.c refers to channel variable
record_rate but that is the entire occurrence in the entire code base; is that an error?