[Kamailio-Users] NAT support - can't send command to a RTP proxy

[Joao Gomes Pereira]

Hello
Im trying to enable NAT support with nathelper and RTPproxy, but when I 
run Kamailio this sows up:

[6756] ERROR:nathelper:send_rtpp_command: can't send command to a RTP proxy
[6756] ERROR:nathelper:send_rtpp_command: proxy <udp:127.0.0.1:7722> 
does not respond, disable it
[6756] WARNING:nathelper:rtpp_test: can't get version of the RTP proxy
[6756] WARNING:nathelper:rtpp_test: support for RTP proxy 
<udp:127.0.0.1:7722> has been disabled temporarily


Im runnig RTPproxy this way (in the same server as Kamailio):
rtpproxy -l 192.168.1.25  -s udp:localhost 7722

And this is a part of my kamailio.conf :

(....)
loadmodule "nathelper.so"

(....)
# -- nathelper
modparam("nathelper", "rtpproxy_sock", "udp:127.0.0.1:7722")
modparam("nathelper", "natping_interval", 30)
modparam("nathelper", "ping_nated_only", 1)
modparam("nathelper", "sipping_bflag", 7)
modparam("registrar|nathelper", "received_avp", "$avp(i:80)")
modparam("usrloc", "nat_bflag", 6)

(....)



So, RTPproxy is running and everything seems OK with Kamailio 
configuration... why can't Kamailio send commands to RTPproxy?
Thanks
Regards
Joao Pereira