Loosing rtp only in carrierroute failureroute - sr-users

29 Oct 2013


      Hi all
We do have a strange problem with loosing rtp in case of carrierroute - failureroute.
If we send traffic directly to the failure gateway, we do have rtp without any problem
Situation:
Ua --> Freeswitch --> kamailio 3.3 --> gw 1 Error 404 --> failureroute --> media gateway voiceprompt for error 404
==> this does not work
Ua --> Freeswitch --> kamailio 3.3 rewrite to dest for voiceprompt 404  -->media gateway voiceprompt for error 404
==> this works!!
Any idea?
For me it seems being a problem with branching or so.
Regards,
Oli
Configs below:
Main routing block
request_route {
    --- do all the checks
route(CARRIERROUTE);
    route(RELAY);
}
route[RELAY] {
    xlog(, "L_INFO", "RELAY: Outbound sent via $avp(s:trunk_out)");
    # enable additional event routes for forwarded requests
    # - serial forking, RTP relaying handling, a.s.o.
    if (is_method("INVITE|SUBSCRIBE")) {
    	t_on_branch("MANAGE_BRANCH");
    	t_on_reply("MANAGE_REPLY");
    	xlog(,"L_INFO", "RELAX - Manage branch ...\n");
    }
    if (is_method("INVITE")) {
    	t_on_failure("MANAGE_FAILURE");
    }
if (!t_relay()) {
    	sl_reply_error();
    }
    exit;
}
# carrierroute
route[CARRIERROUTE] {
    xlog(,"L_INFO","Carrierroute module start \n");
    $avp(s:tree) = "default";
    
    # lookup from user and from domain
    cr_user_carrier("$fU", "$avp(s:trunk_in)", "$avp(s:cr_pref_carr)");
if($avp(s:cr_pref_carr) == 0){
    	# lookup from domain
    	cr_user_carrier("", "$avp(s:trunk_in)", "$avp(s:cr_pref_carr)");
    }
if(!cr_route("$avp(s:cr_pref_carr)", "$avp(s:tree)", "$rU", "$rU", "call_id", "$avp(s:todirection)" )){
    	xlog("cr_route 403 no route found $avp(s:cr_pref_carr)");
               	sl_send_reply("403", "Not allowed");
    	exit;
        }
    $avp(s:trunk_out) = $avp(s:todirection);
    route(ALTERHEADER);
}
failure_route[MANAGE_FAILURE] {
    
        if (t_grep_status("486")){
                xlog("L_INFO", "Status 486 - busy");
                t_reply("486", "Busy");
        }
#revert_uri();
    route(NATMANAGE);
if (t_is_canceled()) {
                exit;
        }
xlog("L_INFO", "failure_route $rd $T_reply_code $avp(s:trunk_in), $avp(s:tree), $rU, $rd, $T_reply_code, $avp(s:tree) \n");
if(!cr_next_domain("$avp(s:cr_pref_carr)", "$avp(s:tree)", "$rU", "$avp(s:trunk_in)", "$T_reply_code", "$avp(s:tree)" )){
              	xlog("cr_next_domain failed");
    	exit;
    }
if(!cr_route("$avp(s:cr_pref_carr)", "$avp(s:tree)", "$rU", "$rU", "call_id", "$avp(s:todirection)" )){
    	xlog("cr_route failed");
    	exit;
        }
    $avp(s:trunk_out) = $avp(s:todirection);
if (is_method("INVITE"))
    {
    	setflag(FLT_ACC); # do accounting
    	setflag(FLT_ACCMISSED); # oro 28.10.13
    }
route(ALTERHEADER);
t_on_failure("MANAGE_FAILURE");
if (!t_relay()) {
           	xlog("failureroute t_relay failed");
         	exit;
        }
}