[Serusers] RTPproxy problem

Hello I whant to run RTPproxy separatly from my SIP router, so I tried to run it like this: [root@vox rtpproxy-0.3]# rtpproxy -s udp:xxx.xxx.xxx.xxx:22222 rtpproxy: explicit binding address has to be specified in UDP command mode [root@vox rtpproxy-0.3]# rtpproxy -l xxx.xxx.xxx.xxx: -s udp:xxx.xxx.xxx.xxx::22222 xxx.xxx.xxx.xxx: = my IP But when I run SER, this happens 9(15400) WARNING: rtpp_test: support for RTP proxy has been disabled temporarily 11(15407) ERROR: send_rtpp_command: can't connect to RTP proxy I already tried with modparam("nathelper", "rtpproxy_sock", "unix:/var/run/rtpproxy.sock") and with modparam("nathelper", "rtpproxy_sock", "unix:/var/run/rtpproxy.sock udp:xxx.xxx.xxx.xxx:22222") But it always says: send_rtpp_command: can't connect to RTP proxy Whats the problem? Im using this configuration in sip.conf: http://siprouter.onsip.org/doc/gettingstarted/ch08s02.html Regards Joao Pereira