[OpenSER-Users] SIP alternate port, cross connect with 5060 port

[Raju Abhyankar]

Hello,

I have setup openser (1.1.1-tls) to talk to our UA's
on port 5060 and some UA's on port 4800 (as provider
blocks 5060). I am using Mediaproxy (1.9.0). Currently
the following works:

1. UA using 5060 makes call to UA using 4800: Phone
bell rings and audio two way no issues.

2. UA using 4800 makes call to UA using 5060. Phone
bell rings but no audio in either direction

All UA's use RTP port 5004.

What can I add to the following loose route section so
that I can make "2" work above. My loose route section
in openser is:

#####################################################
listen= udp:XXX.XXX.XXX.XXX:5060
listen= udp:XXX.XXX.XXX.XXX:4800

# Loose route section
if (loose_route()) {

    if ((method=="INVITE" || method=="REFER") &&
!has_totag()) {(20)
      sl_send_reply("403", "Forbidden");
      break;
    };

    if (method=="INVITE") {

      (21)if (!proxy_authorize("","subscriber")) {
        proxy_challenge("","0");
        break;
      } else if (!check_from()) {
        sl_send_reply("403", "Use From=ID");
        break;
      };

      consume_credentials();

      if (client_nat_test("3") || search   
("^Route:.*;nat=yes")) { 
        setflag(6);
        use_media_proxy();
      };
    };

    route(1);
    break;
  };

#####################################################

Please do provide if there is a solution to this
issue. 

Your inputs appreciated.

regards,

Roger