Hi all,
     I'm having trouble allowing calls to my pstn gateway. I get some errors. These are the errors I get:

I get the 404 Not Found error

Here is the information I got from ngrep:

U 2006/06/17 02:58:31.372496 68.xxx.xxx.17:5060 -> 192.168.1.20:5060
  SIP/2.0 100 trying -- your call is important to us..Via: SIP/2.0/UDP 192.168.1.1:5060;rport=5060;branch=z9hG4bK082837F1736B4E11832482B6D09012F5..From: K
  enny <sip:201@mydomain.myftp.org>;tag=2300590181..To: <sip:13373038435@mydomain.myftp.org>..Call-ID: 4B570DFD-0E2E-4F32-8B4B-05ADC419D0E7@192.168.1.20..
  CSeq: 60451 INVITE..Server: OpenSer (1.0.1 (i386/linux))..Content-Length: 0..Warning: 392 192.168.1.5:5060 "Noisy feedback tells:  pid=2874 req_src_ip=1
  92.168.1.1 req_src_port=5060 in_uri=sip:13373038435@mydomain.myftp.org out_uri=sip:13373038435@pstn.gateway.net:5060 via_cnt==1"....

U 2006/06/17 02:58:31.487474 192.168.1.5:5060 -> 65.xxx.xxx.xxx:5060
  INVITE sip:13373038435@pstn.gateway.net:5060 SIP/2.0..Record-Route: <sip:192.168.1.5;ftag=2300590181;lr=on>..Via: SIP/2.0/UDP 192.168.1.5;branch=z9hG4bK
  7217.285e6331.0..Via: SIP/2.0/UDP 192.168.1.1:5060;rport=5060;branch=z9hG4bK082837F1736B4E11832482B6D09012F5..From: Kenny <sip:201@mydomain.myftp.org>;t
  ag=2300590181..To: <sip:13373038435@mydomain.myftp.org>..Contact: <sip:201@192.168.1.1:5060>..Call-ID: 4B570DFD-0E2E-4F32-8B4B-05ADC419D0E7@192.168.1.20
  ..CSeq: 60451 INVITE..Max-Forwards: 69..Content-Type: application/sdp..User-Agent: X-Lite release 1105x..Content-Length: 304....v=0..o=201 10653130 1065
  3152 IN IP4 68.226.254.17..s=X-Lite..c=IN IP4 192.168.1.1..t=0 0..m=audio 8000 RTP/AVP 0 8 3 98 97 101..a=rtpmap:0 pcmu/8000..a=rtpmap:8 pcma/8000..a=rt
  pmap:3 gsm/8000..a=rtpmap:98 iLBC/8000..a=rtpmap:97 speex/8000..a=rtpmap:101 telephone-event/8000..a=fmtp:101 0-15..a=sendrecv..

U 2006/06/17 02:58:31.545023 65.200.189.132:5060 -> 192.168.1.5:5060
  SIP/2.0 100 Trying..Via: SIP/2.0/UDP 68.226.254.17:5060;branch=z9hG4bK7217.285e6331.0..Via: SIP/2.0/UDP 192.168.1.1:5060;rport=5060;branch=z9hG4bK082837
  F1736B4E11832482B6D09012F5..From: Kenny <sip:201@mydomain.myftp.org>;tag=2300590181..To: <sip:13373038435@mydomain.myftp.org>..Call-ID: 4B570DFD-0E2E-4F
  32-8B4B-05ADC419D0E7@192.168.1.20..CSeq: 60451 INVITE..Content-Length: 0....

U 2006/06/17 02:58:31.661353 65.200.189.132:5060 -> 192.168.1.5:5060
  SIP/2.0 500 Server Internal Error..To: <sip:13373038435@mydomain.myftp.org>;tag=3359519831-260907..From: Kenny <sip:201@mydomain.myftp.org>;tag=23005901
  81..Call-ID: 4B570DFD-0E2E-4F32-8B4B-05ADC419D0E7@192.168.1.20..CSeq: 60451 INVITE..Contact: sip:13373038435@65.xxx.xxx.xxx:5060..Via: SIP/2.0/UDP 68.xx
  x.xxx.17:5060;branch=z9hG4bK7217.285e6331.0..Via: SIP/2.0/UDP 192.168.1.1:5060;rport=5060;branch=z9hG4bK082837F1736B4E11832482B6D09012F5..Content-Length
  : 0....

U 2006/06/17 02:58:31.661842 192.168.1.5:5060 -> xx.xxx.xxx.132:5060
  ACK sip:13373038435@pstn.gateway.net:5060 SIP/2.0..Via: SIP/2.0/UDP 192.168.1.5;branch=z9hG4bK7217.285e6331.0..From: Kenny <sip:201@mydomain.myftp.org>;
  tag=2300590181..Call-ID: 4B570DFD-0E2E-4F32-8B4B-05ADC419D0E7@192.168.1.20..To: <sip:13373038435@mydomain.myftp.org>;tag=3359519831-260907..CSeq: 60451
  ACK..User-Agent: OpenSer (1.0.1 (i386/linux))..Content-Length: 0....

Below is my openser.cfg

#
# $Id: openser.cfg,v 1.5 2005/10/28 19:45:33 bogdan_iancu Exp $
#
# simple quick-start config script
#

# ----------- global configuration parameters ------------------------

debug=3            # debug level (cmd line: -dddddddddd)
fork=yes
log_stderror=no    # (cmd line: -E)

/* Uncomment these lines to enter debugging mode
fork=no
log_stderror=yes
*/

# put your server IP address here

listen=192.168.1.5

alias=mydomain.myftp.org

check_via=no    # (cmd. line: -v)
dns=no          # (cmd. line: -r)
rev_dns=no      # (cmd. line: -R)
port=5060
children=4
fifo="/tmp/openser_fifo"

fifo_db_url="mysql://openser:openserrw@localhost/openser"

loadmodule "/usr/local/lib/openser/modules/mysql.so"
loadmodule "/usr/local/lib/openser/modules/sl.so"
loadmodule "/usr/local/lib/openser/modules/tm.so"
loadmodule "/usr/local/lib/openser/modules/rr.so"
loadmodule "/usr/local/lib/openser/modules/maxfwd.so"
loadmodule "/usr/local/lib/openser/modules/usrloc.so"
loadmodule "/usr/local/lib/openser/modules/registrar.so"
loadmodule "/usr/local/lib/openser/modules/uri_db.so"
loadmodule "/usr/local/lib/openser/modules/auth.so"
loadmodule "/usr/local/lib/openser/modules/auth_db.so"
loadmodule "/usr/local/lib/openser/modules/textops.so"
loadmodule "/usr/local/lib/openser/modules/avpops.so"
loadmodule "/usr/local/lib/openser/modules/domain.so"
loadmodule "/usr/local/lib/openser/modules/xlog.so"



modparam("auth_db|permissions|uri_db|usrloc", "db_url", "mysql://openser:openserrw@localhost/openser")
modparam("auth_db", "calculate_ha1", 1)
modparam("auth_db", "password_column", "password")
modparam("usrloc", "db_mode", 2)
modparam("rr", "enable_full_lr", 1)

modparam("tm", "fr_inv_timer", 27)
modparam("tm", "fr_inv_timer_avp", "inv_timeout")

route {

    # -----------------------------------------------------------------
    # Sanity Check Section
    # -----------------------------------------------------------------
    if (!mf_process_maxfwd_header("10")) {
        sl_send_reply("483", "Too Many Hops");
        exit;
    };

    if (msg:len > max_len) {
        sl_send_reply("513", "Message Overflow");
        exit;
    };

    # -----------------------------------------------------------------
    # Record Route Section
    # -----------------------------------------------------------------
    if (method!="REGISTER") {
        record_route();
    };

    # -----------------------------------------------------------------
    # Loose Route Section
    # -----------------------------------------------------------------
    if (loose_route()) {
        route(1);
    };

    # -----------------------------------------------------------------
    # Call Type Processing Section
    # -----------------------------------------------------------------   
    if (method=="REGISTER") {
        xlog("Registering\n");
        route(2);
        return;
    };

    lookup("aliases");
   
    if(method =="INVITE"){
    if( uri=~"^sip:1[0-9]*@"){
        xlog("International call\n");
        route(4);
        exit;
    };
    };
   

    route(1);
}

route[1] {

    # -----------------------------------------------------------------
    # Default Message Handler
    # -----------------------------------------------------------------
    if (!t_relay()) {
        sl_reply_error();
    };
}

route[2] {

    # -----------------------------------------------------------------
    # REGISTER Message Handler
    # ----------------------------------------------------------------
    sl_send_reply("100", "Trying");
   
    if (!www_authorize("mydomain.myftp.org","subscriber")) {
        www_challenge("mydomain.myftp.org","0");
        exit;
    };

    if (!check_to()) {
        sl_send_reply("401", "Unauthorized");
        return;
    };

    consume_credentials();

    if (!save("location")) {
        sl_reply_error();
    };
   
    xlog("Registered Successfully\n");
}

route[3] {
    # -----------------------------------------------------------------
    # INVITE Message Handler
    # -----------------------------------------------------------------
    if (!proxy_authorize("","subscriber")) {
        proxy_challenge("","0");
        return;
    } else if (!check_from()) {
        sl_send_reply("403", "Use From=ID");
        return;
    };

     consume_credentials();

    lookup("aliases");
    if (uri!=myself) {
        route(1);
    };

    if (!lookup("location")) {
        sl_send_reply("404", "User Not Found");
        exit;
    };

    route(1);
}

route[4]{
    xlog("Before forward to host\n");
    rewritehostport("pstn.gateway.net:5060");
    xlog("After forward to host\n");
    route(1);
   
}


What am I doin wrong? Why am I not able to dial a PSTN line? My PSTN gateway allows international calls. Any help is appreciated. Thank you.


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