Dear List,

I have Kamailio 3.1 installed in Amazon EC 2 server. Everything is working fine except that every REGISTER / MESSAGE was looped for twice or 3 times. And I am sure this is not caused by UA.

I have attached the ngrep log in this message. And also, my main modification to the kamailio.cfg is like below:

Your help will be great great appreciated.

Thank you!!

Coca

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#!define WITH_MYSQL #!define WITH_NAT

alias="mydomain.org" alias="xx.xx.xx.xx"

advertised_address="xx.xx.xx.xx"

... ...

route {

# per request initial checks route(REQINIT);

# NAT detection route(NAT);

# handle requests within SIP dialogs route(WITHINDLG);

### only initial requests (no To tag)

# CANCEL processing if (is_method("CANCEL")) { if (t_check_trans()) t_relay(); exit; }

t_check_trans();

# authentication route(AUTH);

# record routing for dialog forming requests (in case they are routed) # - remove preloaded route headers remove_hf("Route"); if (is_method("INVITE|SUBSCRIBE")) { #record_route(); /* for NAT support */ record_route_preset("xx.xx.xx.xx"); }

# account only INVITEs if (is_method("INVITE")) { setflag(FLT_ACC); # do accounting }

# dispatch requests to foreign domains route(SIPOUT);

### requests for my local domains

# handle presence related requests route(PRESENCE);

# handle registrations route(REGISTRAR);

if ($rU==$null) { # request with no Username in RURI sl_send_reply("484","Address Incomplete"); exit; }

# dispatch destinations to PSTN route(PSTN);

# user location service route(LOCATION);

route(RELAY); }

# Handle SIP registrations route[REGISTRAR] { if (is_method("REGISTER")) { if(isflagset(FLT_NATS)) { setbflag(FLB_NATB); # uncomment next line to do SIP NAT pinging setbflag(FLB_NATSIPPING); } if (!save("location")) sl_reply_error();

exit; } }