opensips.cfg file with NAT and RTPproxy support (under testing)

I have phones (some behind NAT) connecting to Opensips server an Asterisk and an rtpproxy as seen below:
rtpproxy started with
ps -aux | grep rtpproxy
root     15666  0.0  0.0  14472   920 ?        Ssl  Mar23   0:05 ./rtpproxy -F -l
                                                                                                    
UAC1 ->100---------Firewall/router----------Opensips 1.7---- RTP PROXY------------Asterisk 
- Calls between UAC are OK (both SIP and RTP).
- Calls UAC for PSTN is OK.
- Did numbers is received in Asterisk, and destination for UAC registered in opensips, but no work audio .
(EX User call cellphone for DID 54115368566, call is received in asterisk, and destination for user 100, registered in opensips)

My opensips.cfg file :

loadmodule "db_mysql.so"
loadmodule "signaling.so"
loadmodule "sl.so"
loadmodule "tm.so"
loadmodule "rr.so"
loadmodule "maxfwd.so"
loadmodule "usrloc.so"
loadmodule "registrar.so"
loadmodule "textops.so"
loadmodule "mi_fifo.so"
loadmodule "uri.so"
loadmodule "acc.so"
loadmodule "dialog.so"
loadmodule "load_balancer.so"
loadmodule "nathelper.so"
loadmodule "siptrace.so"
loadmodule "rtpproxy.so"
loadmodule "auth.so"
loadmodule "auth_db.so"
loadmodule "domain.so"

modparam("load_balancer", "db_url", "mysql://opensips:opensips@localhost/opensips")

modparam("siptrace", "db_url", "mysql://opensips:opensips@localhost/opensips")
modparam("siptrace", "trace_flag", 22)
modparam("siptrace", "trace_on", 1)
modparam("siptrace", "enable_ack_trace", 1)

modparam("rtpproxy", "rtpproxy_sock","udp:189.254.2.19:7890")

modparam("dialog", "db_mode", 1)
modparam("dialog", "db_url", "mysql://opensips:opensips@localhost/opensips")

modparam("nathelper", "natping_interval", 10)
modparam("nathelper", "natping_processes", 3)
modparam("nathelper", "natping_socket", "189.254.2.19:5006")
modparam("nathelper", "received_avp", "$avp(42)")
modparam("nathelper", "force_socket", "189.254.2.19:33333")
modparam("nathelper", "sipping_from", <a class="moz-txt-link-rfc2396E" href="sip:pinger@65.254.63.212">"sip:pinger@65.254.63.212")
modparam("nathelper", "sipping_method", "INFO")

modparam("nathelper", "sipping_bflag", 7)

modparam("mi_fifo", "fifo_name", "/tmp/opensips_fifo")

modparam("rr","enable_double_rr",1)
modparam("rr","append_fromtag",1)

modparam("registrar", "max_contacts", 10)

modparam("usrloc", "db_mode",   2)

modparam("usrloc", "db_url","mysql://opensips:opensips@localhost/opensips")

modparam("acc", "early_media", 1)
modparam("acc", "report_cancels", 1)
modparam("acc", "detect_direction", 0)
modparam("acc", "failed_transaction_flag", 3)
modparam("acc", "log_flag", 1)
modparam("acc", "log_missed_flag", 2)
modparam("acc", "db_flag", 1)
modparam("acc", "db_missed_flag", 2)

modparam("auth_db", "password_column", "password")
modparam("auth_db", "password_column_2", "ha1b")
modparam("auth_db", "calculate_ha1", 1)
modparam("auth_db", "db_url","mysql://opensips:opensips@localhost/opensips")
modparam("auth_db", "load_credentials", "")
modparam("auth_db", "skip_version_check", 1)

modparam("domain", "db_url","mysql://opensips:opensips@localhost/opensips")
modparam("domain", "db_mode", 1)   # Use caching

modparam("auth_db|usrloc|uri", "use_domain", 0)

route {
    if (!mf_process_maxfwd_header("256")) {
        if (method != "ACK") {
            sl_send_reply("483", "Too Many Hops");
        }
        return;
    }

    if (msg:len > max_len) {
        if (method != "ACK") {
            sl_send_reply("513", "Message Overflow");
        }    
        return;
    }


    if (status == "482") { #loop detection
        xlog("L_INFO", "Webur: $mi $rm $fu -> $ru status 482 Loop Detected\n");
        return;
    }

    if (!mf_process_maxfwd_header("3")) {
        sl_send_reply("483", "looping");
        exit;
    }


    if (has_totag()) {
        loose_route();
        t_relay();
        exit;
    }

    if (method == "INVITE") {
        route(3);
        return;
    } else
        if (method == "ACK") {
            route(9);
            return;
        } else
            if (method == "BYE" || method == "CANCEL") {
                route(5);
                return;
            } else
                if (method == "REGISTER" || method == "MESSAGE") {
                    route(1);
                    return;
                } else
                    if (method == "PUBLISH" || method == "SUBSCRIBE") {
                        sl_send_reply("200", "Understood");
                        #route(2);
                        return;
                    } else
                        if (method == "NOTIFY") {
                            sl_send_reply("200", "Understood");
                            return;
                        } else
                            if (method == "OPTIONS") {
                                sl_send_reply("200", "Got it");
                                return;
                            }
}

route[1] {
    if (is_method("REGISTER")) {
        route(4);
        if (isflagset(5)) {
            record_route(";nat=yes");
        } else {
            record_route();
        }
        ;

        if (!www_authorize("", "a2billing")) {
            www_challenge("", "0");
        }
        consume_credentials();

        $du = <a class="moz-txt-link-rfc2396E" href="sip:190.61.201.89:5060">"sip:190.61.201.89:5060";
        save("location");
        t_relay();
       exit;
    }
}


route[3] {

    xlog("L_INFO", "Place Holder");
    if (!has_totag()) {
        if (is_method("INVITE")) {
            trace_dialog();
        } else {
            #sip_trace();
        }
    }

    if (loose_route()) {
        if (!has_totag()) {
            xlog("L_INFO", "Initial loose-routing rejected - M=$rm RURI=$ru F=$fu T=$tu IP=$si ID=$ci\n");
            sl_send_reply("403", "Initial Loose-Routing Rejected");
            exit;
        }
        if (is_method("INVITE")) {

            route(5);
        }
        append_hf("P-hint: rr-enforced\r\n");
        route(6);
    }

    # NAT detection
    route(4);

    record_route();

    if ($rU = ~ "^[0-9]{5}$" || $rU = ~ "^[0-9]{3}$") {
        lookup("location");
        route(8);
        t_on_failure("1");
        exit;
    }

    route(10);
    return;
}

route[4] {
    if (is_method("INVITE") && has_totag()) {
        engage_rtp_proxy();
    }
    ;
    force_rport();
    if (1) {
       if (nat_uac_test("19")) {
            xlog("L_DBG", "NAT detected1");
            if (method == "REGISTER") {
                fix_nated_register();
            } else {
                fix_nated_contact();
                fix_nated_sdp("1");


                xlog("L_INFO", "NAT detected2");
            }
            setflag(5);
            return;
        }
    }
}

route[5] {
    if (is_method("BYE|CANCEL")) {
        unforce_rtp_proxy();
        t_relay();
        exit;
    } else
        if (is_method("INVITE")) {
            if (has_body("application/sdp"))
                rtpproxy_offer("foc");
            t_on_failure("3");
        } else
            if (is_method("ASK")) {
                if (has_body("application/sdp"))
                    rtpproxy_answer("foc");
                t_on_failure("3");
            }
    t_on_reply("3");
}


route[6] {
    if (subst_uri('/(<a class="moz-txt-link-freetext" href="sip:.*">sip:.*);nat=yes/\1/')) {
        setbflag(0);
    }
    ;
    xlog("L_INFO", "NAT detected");
    if (isflagset(5) || isbflagset(0)) {
        route(5);
        if (!t_relay()) {
            sl_reply_error();
        }
        ;

    }

}

route[7] {
    if (is_method("BYE|CANCEL")) {
        unforce_rtp_proxy();
        drop();
    } else
        if (is_method("INVITE")) {
            if (has_body("application/sdp"))
                rtpproxy_offer("foc");
            t_on_failure("3");
        } else
            if (is_method("ASK")) {
                if (has_body("application/sdp"))
                    rtpproxy_answer("foc");
                t_on_failure("3");
            }
    t_on_reply("3");
    exit;
}

route[8] {
    force_rport();

    if (has_body("application/sdp")) {
        rtpproxy_offer("foc");
        xlog("L_INFO", "NAT detected");
        t_on_failure("3");
    } else
        if (is_method("ASK")) {
            if (has_body("application/sdp"))
                fix_nated_sdp("1"); # Add direction=active to SDP
            rtpproxy_answer("foc");
            xlog("L_INFO", "NAT detected");

        }
    t_on_reply("3");

    if (!t_relay()) {
        sl_reply_error();
        route(13);
        exit;


    }


}
route[9] {
    setflag(4);
    force_rport();
    force_tcp_alias();
    rtpproxy_answer();
    return;
    }


route[10] {

    load_balance("1", "pstn");  
    route(11);
    return;
}

route[11] {

    if ($retcode < 0) {
        sl_send_reply("500", "Service full");
        exit;
    }
    xlog("Selected Load Balance destination is: $rU@$du\n");

    route(4);

    if (!t_relay()) {
        sl_reply_error();
        route(13);
    }
    return;
}


branch_route[2] {
    xlog("L_INFO: new branch at $ru\n");
}

onreply_route[2] {
    xlog("L_INFO: incoming reply\n");
    force_rport();
    if (status = ~ "(183)|(2[0-9][0-9][0-9])" && has_body("application/sdp")) {
        if (nat_uac_test("19")) {
            log("L_INFO: Hem detectat NAT");
            setbflag(2); # flag for NAT
            # fix_nated_contact();
            fix_nated_sdp("11");
            rtpproxy_answer();
        }
    }
}

onreply_route[3] {
    if ((isflagset(5) || isbflagset(0)) && status = ~ "(183)|(2[0-9][0-9])" && has_body("application/sdp")) {
        if (rtpproxy_answer()) {
            log("L_INFO: rtpproxy_answer NAT");
        }
    }
    if (!subst_uri('/(<a class="moz-txt-link-freetext" href="sip:.*">sip:.*);nat=yes/\1/')) {
        search_append('Contact:.*sip:[^>[:cntrl:]]*', ';nat=yes');
    }
    if (isbflagset(0)) {
        #fix_nated_contact();
    }
    exit;
}
failure_route[1] {
    if (t_was_cancelled()) {
        exit;
    }
}

failure_route[3] {
    if (isbflagset(0) || isflagset(5)) {
        unforce_rtp_proxy();
    }
}