Its still not working after following your instructions.
Now logs are such like that
[root@ip-172-31-30-160 ~]# tail -f /usr/local/FlashphonerWebCallServer/logs/flashphoner_manager.log
"hasAudio" : true,
"status" : "PENDING",
"record" : false,
"width" : 0,
"height" : 0,
"bitrate" ...