Yes, it should be (if "sip" user really
exists).
Please, paste the result of:
ps -ef | grep rtpproxy
Thanks, here it is:
ps -ef | grep rtpproxy
sip 2745 1 0 Jan02 ? 00:00:00 /usr/local/bin/rtpproxy -s
unix:/var/run/rtpproxy.sock -u sip
root 7372 7367 0 20:51 pts/2 00:00:00 grep rtpproxy
regards
Franz