Dear users,

I'm using kamailio in the following scenario:

1. A call comes in and is checked against PDT module. From this module depend from the prefix I'm getting back the domain which is used as the dialplan group.
2. After that the call is checked against Dialplan module using the previous value from PDT as Dialplan dpid. From the Dialplan module i get back  the the attributes values.
3. these attributes values are user in the dispathcher module where I continue with failover scenarios.

Also the script is working with a radius for accounting purposes.

This scenario works perfecttly and it is still in a testing mode.

An the problem:

I'm running SIPP against this scenario and until the CPS is 5 everything looks good. The scenario for SIPP is the simplest. uac and uas default. Uac is sending a call and uas is answering.
When the CPS goes above 9 then I have call failures. All the statistics are going down.
I'm cheking for CPU load or other system problems but I don't see anything strange. Does anyone understand why this is happening?

I'm attachng the 2 routes that i'm using:


test values in order to understand the script

PDT value =  1 (used for the dialplan group)
Dialplan value = 100.101.102.#
Dispatcher values:
100 = 10.0.0.5
101 = 10.0.0.6
102 = 10.0.0.7


Thank you in advance

Alex




route[7] {

        if(prefix2domain("2", "0")) {
       
                $var(dial_grp) = $(rd{s.int});
                if(dp_translate("$var(dial_
grp)", "$rU/$rU"))
                {
                       
                        $var(i) = 0;
                        while($(avp(s:dest){s.select,$var(i),.})!="#")
                        {
                                $avp(s:dstgrp) = $(avp(s:dest){s.select,$var(i),.}{s.int});
                                $var(i) = $var(i) + 1;

                        }      
                       
                        $avp(s:user) = $rU;
                       

                                if(ds_select_domain("$avp(s:dstgrp)", "4"))
                                {


                                        if($(ru{uri.param,prefix})!=null)
                                                {
                                                        $ru = "sip:" + $(ru{uri.param,prefix}) + $rU + "@" + $rd;
                                                } else {
                                                        $ru = "sip:" + $rU + "@" + $rd;
                                                }
                                        $avp(s:dstgrp) = null;
                                        t_on_failure("2");
                                        t_relay();
                                        exit;
                                }
                }
                sl_send_reply("404", "No route found");
                exit;
        }
}
 

failure_route[2] {

  if(t_was_cancelled()) {
        exit;
  }

  if(t_check_status("4[0-9][0-9]|5[0-9][0-9]"))
  {

     if(ds_next_domain())
     {
            if($(ru{uri.param,prefix})!=null)
            {
                $ru = "sip:" + $(ru{uri.param,prefix}) + $avp(s:user) + "@" + $rd;
            } else {
                $ru = "sip:" + $avp(s:user) + "@" + $rd;
            }
            t_on_failure("2");
            append_branch();
            t_relay();
            exit;
     } else {

            if($avp(s:dstgrp)!=null)
            {
                 if(ds_select_domain("$avp(s:dstgrp)", "4"))
                 {

                     if($(ru{uri.param,prefix})!=null)
                     {
                         $ru = "sip:" + $(ru{uri.param,prefix}) + $avp(s:user) + "@" + $rd;
                     } else {
                         $ru = "sip:" + $avp(s:user) + "@" + $rd;
                     }
                     $avp(s:dstgrp) = null;
                     t_on_failure("2");
                     append_branch();
                     t_relay();
                     exit;
                }
         } else {
                t_reply("444", "No more tries for you!");
                }
    }
}