Caller cant hear me and cant hear them as well after answering the call

I mistakely type the command “amportal chown” in the terminal of my PBX running on asterisk. After that I’ve experienced the caller doesnt hear me and cant hear them as well after answering the phone. Ive looked at the asterisk logfile and it shows an error like this:

[2014-05-28 17:01:55] WARNING[15587] netsock2.c: Unable to set SIP RTP DSCP TOS value to 184 (may be you have no root privileges): Operation not permitted

Pls help!