Re: [Serusers] help on mediaproxy with ser no sound

LAN-WAN deployments can sometimes by tricky. A full ngrep trace of a call setup (INVITE++) will be of help to understand what is happening. g-)

peiyin wrote:

Hi all,

I'm having trouble configuring mediaproxy to work on my SER server. One phone is behind NAT and the other is using a public ip. Both are registered in SER.

Calls from phone A (nat) to phone B(public) are successful whereby phone B will rings.However, no sound comes out from both side, also, when i hang up phone B, phone A doesn't produce any engaged tone. Calls from phone B to phone A also successful but i don't get any audio on either end.

I'm storing all information in database.

My config is as below (taken from example and modified):

route{ if (!mf_process_maxfwd_header("10")) { if (method!="ACK") { sl_send_reply("483", "Too many hops"); }; break; };

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

if(method=="INVITE" || method=="BYE") { setflag(1); #accounting }

if (method=="REGISTER") { if (is_from_local()) { # Mark as NAT'ed if (client_nat_test("3")) { setflag(6); force_rport(); fix_contact(); };

       if (!www_authorize("my_ser_ip", "subscriber")) {
           www_challenge("my_ser_ip", "0");
           break;
       } else if (!check_to()) {
           sl_send_reply("403", "Username!=To not allowed");
           break;
       };

       if (!save("location")) {
           sl_reply_error();
       };
   } else {
       sl_send_reply("403", "This domain is not served here");
   };

   break;

};

if (method=="INVITE") { if (!(is_from_local() || is_uri_host_local())) { sl_send_reply("403", "Relaying is forbidden"); break; }; t_on_failure("1"); } else if (method == "BYE" || method == "CANCEL") { end_media_session(); };

if (loose_route()) { if (method=="INVITE" || method=="ACK") { use_media_proxy(); }; # end media session for BYE and CANCEL is done above # before entering the loose route. no need to call it here t_relay(); break; };

# Force subsequent messages to pass trough this proxy if (method == "INVITE") { record_route(); };

   if (client_nat_test("3") && !search("^Record-Route:")) {
   # Mark as NAT'ed
   force_rport();
   fix_contact();

};

if (method=="INVITE") { t_on_reply("1"); };

if (is_uri_host_local()) { if (!lookup("location")) { sl_send_reply("404", "User not found"); break; }; };

if (method=="INVITE" || method=="ACK") { use_media_proxy(); };

if (!t_relay()) { if (method=="INVITE" || method=="ACK") { end_media_session(); }; sl_reply_error(); }; }

failure_route[1] { end_media_session(); }

onreply_route[1] { if (status=~"(183)|(2[0-9][0-9])") { if (client_nat_test("1")) { fix_contact(); }; use_media_proxy(); }; }

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