[Serusers] Issue with call forwarding - sr-users

8 Aug 2005


      Hello,I have implemented CFNR (Call forward on No
Response) and CFU(Call forwardinf unconditional) using
avp and I am running into the following problem:
When CFU or CFNR are detected, the control is passed
to route[2] (see below). CFU works fine and the call
is forwarded to it's new destination. But CFNR does
not work and the UA making the call gets a "Proxy
Authentication Required" message from SER. Upon
receiving this message, my UA gives me a congestion
tone.
This is strange since CFU works fine but in the case
of CFNR, I see using ngrep that SER makes DNS queries
to resolve my SIP domain (dns=no has been configured)
The code is:
route[2] {
if (is_uri_host_local()) {
if (!lookup("location")) {
if (does_uri_exist()) {
sl_send_reply("480", "Temporarily
Unavailable");
          break;
        } else {
sl_send_reply("404", "User Not Found");
          break;
        } ;
} else {
route(1);  <-- this simply does t_relay()
        break;
};
} else {
sl_send_reply("302", "Temporarily Redirected");
      break;
};
}
CFNR code is:
-------------------------------------------
failure_route[1] {
if (isflagset(22) && t_check_status("408")) {
        if (avp_pushto("$ruri", "s:cfnr")) {
            append_branch();
            avp_delete("s:cfnr");
            resetflag(22);
route(2);
            break;
        };
    };
}
--------------------------------------------
Any pointers will be highly appreciated.
Thanks
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