[Serusers] Forward to Quintum GW - One way audio - sr-users

30 Nov 2004

Hi guys, 
I have a strange problem when tying to forward call to Quintum gw. 
Callee is hearing what I speak but I don't hear anything. 
Forwarding to another SER is ok. Both - users with real ips and natted.
Somebody can help me?

Here is my config file:
debug=10         # debug level (cmd line: -dddddddddd)
#fork=yes
log_stderror=yes # (cmd line: -E)

/* Uncomment these lines to enter debugging mode 
debug=7
fork=no
log_stderror=yes
*/

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

# Uncomment this if you want to use SQL database
loadmodule "/usr/local/lib/ser/modules/mysql.so"

loadmodule "/usr/local/lib/ser/modules/sl.so"
loadmodule "/usr/local/lib/ser/modules/tm.so"
loadmodule "/usr/local/lib/ser/modules/rr.so"
loadmodule "/usr/local/lib/ser/modules/maxfwd.so"
loadmodule "/usr/local/lib/ser/modules/usrloc.so"
loadmodule "/usr/local/lib/ser/modules/registrar.so"
loadmodule "/usr/local/lib/ser/modules/auth.so"
loadmodule "/usr/local/lib/ser/modules/auth_db.so"
loadmodule "/usr/local/lib/ser/modules/textops.so"
loadmodule "/usr/local/lib/ser/modules/domain.so"
loadmodule "/usr/local/lib/ser/modules/mediaproxy.so"
loadmodule "/usr/local/lib/ser/modules/acc.so"
loadmodule "/usr/local/lib/ser/modules/group.so"
loadmodule "/usr/local/lib/ser/modules/nathelper.so"
# ----------------- setting module-specific parameters ---------------

# -- usrloc params --
modparam("usrloc", "db_mode", 2)
modparam("usrloc", "db_url",
"mysql://ser:heslo@192.168.2.15/ser")
modparam("usrloc","user_column","username")

modparam("auth_db", "calculate_ha1", yes)
modparam("auth_db", "password_column", "password")
modparam("rr", "enable_full_lr", 1)
#modparam("acc", "db_url",
"mysql://ser:heslo@192.168.2.15/ser")
#modparam("acc", "log_level", 2) 
#modparam("acc", "log_flag", 3)
#modparam("acc", "log_level", 1)
# number of flag, which will be used for accounting; if a message is
# labeled with this flag, its completion status will be reported
modparam("acc", "log_flag", 1)
modparam("acc", "log_fmt", "cdfimorstup")
modparam("acc", "db_url",
"mysql://ser:heslo@192.168.2.15/ser")
modparam("acc", "db_flag", 1)
modparam("acc", "db_missed_flag", 1)
modparam("acc", "log_missed_flag", 1)
#modparam("acc", "report_cancels", 1)
modparam("acc", "report_ack", 1)
#modparam("mediaproxy", "mediaproxy_socket",
"/var/run/proxydispatcher.sock")
#modparam("mediaproxy", "natping_interval", 20)
modparam("nathelper","rtpproxy_sock",
"/var/run/rtpproxy.sock")
modparam("registrar", "nat_flag", 6)
modparam("nathelper", "natping_interval", 30) # Ping interval 30 s
modparam("nathelper", "ping_nated_only", 1)

listen=193.2.6.17
# -------------------------  request routing logic -------------------
# main routing logic
route{
        if (!mf_process_maxfwd_header("70")) {
                sl_send_reply("483","Too Many Hops");
                break;
        };
        if ( msg:len > max_len ) {
                sl_send_reply("513", "Message too big");
                break;
        };
 if (nat_uac_test("3")) {
  if (method == "REGISTER" || ! search("^Record-Route:")) {
      log("LOG: Someone trying to register from private IP, rewriting\n");

      # This will work only for user agents that support symmetric
      # communication. We tested quite many of them and majority is
      # smart enough to be symmetric. In some phones it takes a configuration
      # option. With Cisco 7960, it is called NAT_Enable=Yes, with kphone it is
      # called "symmetric media" and "symmetric signalling".

      fix_nated_contact(); # Rewrite contact with source IP of signalling
      if (method == "INVITE") {
          fix_nated_sdp("1"); # Add direction=active to SDP
      };
      force_rport(); # Add rport parameter to topmost Via
      setflag(6);    # Mark as NATed
  };
 };

 if (!method=="REGISTER") record_route(); 

 if (loose_route()) {
  # mark routing logic in request
  append_hf("P-hint: rr-enforced\r\n"); 
  route(1);
  break;
 };

 if (!uri==myself) {
  # mark routing logic in request
  append_hf("P-hint: outbound\r\n"); 

  route(1);
  break;
 };

 if (uri==myself) {

  if (method=="REGISTER") {

# Uncomment this if you want to use digest authentication
   if (!www_authorize("193.2.6.17", "subscriber")) {
    www_challenge("193.2.6.17", "0");
    break;
   };

   save("location");
   break;
  };

  lookup("aliases");
  if (!uri==myself) {
   append_hf("P-hint: outbound alias\r\n"); 
   route(1);
   break;
  };

if (uri=~"^sip:[1-9]*@193.2.6.17") {  # QUINTUM GW
        rewritehost("194.24.1.6");
        append_branch("194.24.1.6");
#        t_relay_to_udp("194.24.1.6", "5060");
        t_relay();
        rewritehostport("194.24.1.6:5060");
        append_hf("P-hint: VoipSwitch GATEWAY");
        break;
}
                } else {
if (uri=~"^sip:[0]*@193.2.6.17") {       ### Other SER
        setflag(1);
        rewritehostport("bla.mydomain.com:5060");
        append_branch("bla.mydomain.com");
        t_relay();
        break;
};
};

  # native SIP destinations are handled using our USRLOC DB
  if (!lookup("location")) {
   sl_send_reply("404", "Not Found");
   break;
  };

# };
 append_hf("P-hint: usrloc applied\r\n"); 
 route(1);
}

route[1] 
{

 # if client or server know to be behind a NAT, enable relay
 if (isflagset(6)) {
     force_rtp_proxy();
 };

 # NAT processing of replies; apply to all transactions (for example,
 # re-INVITEs from public to private UA are hard to identify as
 # NATed at the moment of request processing); look at replies
 t_on_reply("1");

 # send it out now; use stateful forwarding as it works reliably
 # even for UDP2TCP
 if (!t_relay()) {
  sl_reply_error();
 };
}

# !! Nathelper
onreply_route[1] {
    # NATed transaction ?
    if (isflagset(6) && status =~ "(183)|2[0-9][0-9]") {
        fix_nated_contact();
 force_rtp_proxy();
    # otherwise, is it a transaction behind a NAT and we did not
    # know at time of request processing ? (RFC1918 contacts)
    } else if (nat_uac_test("1")) {
        fix_nated_contact();
    };
}

Thanks In Advance!
Pavel Siderov 