[Serusers] Unable to complete calls with 0.8.13

Andres andres at telesip.net
Fri Jan 30 04:06:40 CET 2004


Hi,

I downloaded the latest CVS tarball and installed it in our lab.  Using 
a LAN setup, where SER and 2 Sipura units are all in the same subnet, I 
am unable to complete any calls.  All I can tell is that SER is unable 
to match the ACK to a current transaction.  So when phone A makes a call 
to phone B and it answers, phone B sends the STATUS 200 OK back.  Phone 
A then sends the ACK, but SER is unable to match it and is not forwarded 
to phone B.  So the call is not completed.

The syslog just shows a bunch of these messages:
Warning: sl_send_reply: I won't send a reply for ACK!!

I have tried this under RedHat 7.3 and Solaris 8 with the exact same 
results.

I can send the Ethereal Trace of this event to whoever can help me.

The config file is extremely simple (listed below).

Any clues of what is going on?

Thanks.

-- 
Andres
Network Admin
http://www.telesip.net



route{
        # initial sanity checks -- messages with
        # max_forwards==0, or excessively long requests
        if (!mf_process_maxfwd_header("10")) {
                sl_send_reply("483","Too Many Hops");
                break;
        };
        if ( msg:len > max_len ) {
                sl_send_reply("513", "Message too big");
                break;
        };

        # we record-route all messages -- to make sure that
        # subsequent messages will go through our proxy; that's
        # particularly good if upstream and downstream entities
        # use different transport protocol
        record_route();
        # loose-route processing
        if (loose_route()) {
                t_relay();
                break;
        };
        # if the request is for other domain use UsrLoc
        # (in case, it does not work, use the following command
        # with proper names and addresses in it)
        if (uri==myself) {
                if (method=="REGISTER") {
                save("location");
                break;
        };
        };
                # native SIP destinations are handled using our USRLOC DB
                if (!lookup("location")) {
                        sl_send_reply("404", "Not Found");
                        break;
                };


        # forward to current uri now; use stateful forwarding; that
        # works reliably even if we forward from TCP to UDP
        if (!t_relay()) {
                sl_reply_error();
        };
}

-- 
Andres
Network Admin
http://www.telesip.net





More information about the sr-users mailing list