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<div class=Section1>
<p class=MsoNormal><span lang=EN-US>Hello<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>I have a question. I hope that
someone could clarify this to me.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>I have the next situation.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>I’m using a t_on_failure route along
with the LCR module. So I have something like this :<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>failure_route[1] {<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>
if (t_was_cancelled()) {<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>
xlog("L_INFO", "[$ci] $rm:$ru t_was_cancelled in
failure_route\n");<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>
exit;<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>
}<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>
if ( t_check_status("486") ) {<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>
xlog("L_INFO","[$ci] 486 Received\n");<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>
<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:35.4pt'><span lang=EN-US> }<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>
if (t_check_status("603")) {<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>
xlog("L_INFO","[$ci] 603 Received\n");<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> if
(!next_gw()) {<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>
t_reply("503", "Service not available, no more gateways");<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>
</span>xlog("L_INFO", "[$ci] No hay mas gateways para
$rm:$ou\n");<o:p></o:p></p>
<p class=MsoNormal>
<span lang=EN-US>exit;<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>
} else {<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> xlog("L_INFO",
"[$ci] $rm cambiando $ou por $ru en failure_route");<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>
}<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>
t_on_failure("1");<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>
}<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>
t_relay();<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>}<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>Maybe I’m misunderstanding how the
failure_route works but with this configuration I was expecting that If I have
a 603 from the callee I will do the “next_gateway” configuration.
And If I have a 486 I will put a line in the log and then continue with the
t_relay. So.. the 486 will be passed to the caller, but with the final answer from
the caller ( ACK ) to the 486.. and I’m getting this error…<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>Sep 2 16:43:41 ERROR:tm:t_forward_nonack:
no branch for forwarding <o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>Sep 2 16:43:41 ERROR:tm:w_t_relay:
t_forward_nonack failed<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>So it seems that tries to forward the ACK
with t_relay?<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>Caller Proxy
Callee<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> ------><o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> INVITE<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>
-----><o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> INVITE<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>
<------<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> 486<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> -------><o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> ACK<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> <------<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> 486<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> -----> (error?)<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US> ACK<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>But…<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>When I modified the next lines in the
failure_route<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>
if ( t_check_status("486") ) {<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>
xlog("L_INFO","[$ci] 486 Received\n");<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>
exit;
<o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:35.4pt'><span lang=EN-US> }<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>And add the “exit” parameter, i
don’t have the above error and the “486” is passed back to
the caller as “expected”.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>Can someone explain me this?<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>Thanks in advance..<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US>Regards<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-US>Ricardo Martinez.-</span><span lang=EN-US
style='font-size:11.0pt;font-family:"Calibri","sans-serif"'><o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p>
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