hello Daniel,

   I am  using  ASYNC module of kamailio 3.2.2 for delay sip  "INVITE",  I want to know if ASYNC Modules can be used for delay a sip method now? if can, I shoud how to use it?
My case is : when sip server receives a sip invite,  suspends the transaction about 30 seconds,  and process something, then continues the tranaction, forward the INVITE message,etc. 

please give some advice, thanks a lots

Kamailio.cfg as follows:
......
 async_route("RESUME", "20");
.....
route[RESUME]{
       if (is_method("INVITE")){
        xlog("=======INVITE====\n");
        }
       if(!t_relay()){
               t_reply("500","eeeeor");
       }
        exit;
}
 

Regards
JIM LUO