Dear,

Following the configuration available on the TM Modules documentation. Src : https://www.kamailio.org/docs/modules/devel/modules/tm.html#tm.serial_forking

request_route {
  seturi("sip:a@example.com");
  append_branch("sip:b@example.com");
  append_branch("sip:c@example.com");
  append_branch("sip:d@example.com");

  t_relay();
  break;
}

My code :

request_route{

$var(uri1)="sip:9919995@192.168.1.41";
$var(uri2)="sip:9919992@192.168.1.41";
$var(uri3)="sip:9919991@192.168.1.41";
$var(uri4)="sip:9919994@192.168.1.41";

append_branch ("$var(uri1");
append_branch ("$var(uri2");
append_branch ("$var(uri3");
append_branct_("$var(uri4");

t_relay();
break;

}

The server send INVITE to himself.

Fixing the problem :

request_route{

$var(uri1)="sip:9919995@192.168.1.41";
$var(uri2)="sip:9919992@192.168.1.41";
$var(uri3)="sip:9919991@192.168.1.41";
$var(uri4)="sip:9919994@192.168.1.41";

lookup("location","$var(uri4)");
append_branch();
lookup("location","$var(uri1)");
append_branch();
lookup("location","$var(uri2)");
append_branch();
lookup("location","$var(uri3)");

t_relay();
break;

}

Is this the correct way ?

Best regards.

Thomas

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