Can you reproduce the sound problems on the very latest Git?
 I downloaded FS at 2/24 last week, but I couldn't see the version. It only shows "FreeSWITCH Version 1.0.head (git-)" when I input "version".

Can you
hear speech with noise, or is it just garbage?
I could hear the speech with the luod noise.

Can you get a
debug-level log for the call with siptrace enabled so we can see
what's going on? Also use tcpdump/wireshark/tshark to capture the RTP
and analyze it in Wireshark to check for packet loss or jitter.
I have the log file and the package (by Wireshark), should I share them by the email?