[asterisk-users] Asterisk and Kamailio NAT problem

[Joao Gomes Pereira]

Hello
I'm using Asterisk as a SIP client of Kamailio with RTPproxy. Asterisk 
is behind NAT.

X-Lite and SNOM phones behind NAT work fine.
But when I try to connect with an Asterisk behind NAT, the Asterisk 
client doesn't receive sound.
I already tried in 2 different NATs, with no firewalls.

This is my Asterisk config:

[kamailio]
type=peer
host=xxx.xxx.xxx.xxx
disallow=all
allow=ulaw
allow=alaw
allow=gsm  
allow=g726
qualify=1000
username=my_username
fromuser=my_username
secret=password

sip*CLI> sip show peers
Name/username              Host            Dyn Nat ACL Port     Status   
kamailio/my_username           xxx.xxx.xxx.xxx               5060     OK 
(890 ms)

Is there something missing in my SIP.CONF to improve the compatibility 
with Kamailio?
How can I debug the RTP stream in Asterisk?
Thanks
Regards
Joao Pereira

-- 
StarTel - A Rede Livre
Joao Gomes Pereira
www.startel.pt
+351 304500650
sip: gomespereira at startel.pt