On Thu, Jun 11, 2009 at 10:08 AM, David <
kamailio.org <
http://kamailio.org>@
spam.lublink.net <
http://spam.lublink.net>> wrote:
Hi,
I am using Kamailio as my ACC, Dispatcher, far end nat and
presence server in front of a farm of asterisk boxes.
Most calls are being properly added into my acc table and using a
join between the INVITEs, CANCELs, and BYEs I am able to get what
seems like accurate call detail records.
The trouble is that every so often a BYE does not make it back to
my server. In my simulation this morning, I simply unplugged (
electric ) the two phones that were having a pleasant
conversation. Now I have asterisk that thinks the call is still
running and I have Kamailio which has no ending 'BYE' message. For
the most part this is not a big deal, but when I can a cellular
phone in European countries, my provider thinks I am still
talking. At 30 cents a minute, that's a lot.
Here are some snippets from my code :
loadmodule("dialog.so")
loadmodule("acc.so")
loadmodule("sst.so")
modparam("acc", "early_media", 1)
modparam("acc", "report_ack", 1)
modparam("acc", "report_cancels", 1)
modparam("acc", "failed_transaction_flag", 3)
modparam("acc", "log_flag", 1)
modparam("acc", "log_missed_flag", 2)
modparam("acc", "db_flag", 1)
modparam("acc", "db_missed_flag", 2)
# There is also a parameter for the DB, but I can't give you my
password
modparam("acc", "db_url", "some://valid:url@to/db")
# Note $avp(i:10) always ends up being 14400 ( less than the value
on the help page )
modparam("dialog", "timeout_avp", "$avp(i:10)")
modparam("sst", "timeout_avp", "$avp(i:10)")
modparam("sst", "sst_flag", 5)
Relevant snippets from my routing :
if ( has_totag()) {
if ( loose_route() ) {
if ( is_method("CANCEL|BYE") {
setflag(1);
setflag(3);
}
}
# Routing of INVITEs
setflag(2)
if ( !is_method("ACK"))
{
setflag(1);
}
setflag(4);
setflag(5);
For invites, I have a onreply_route and failure_route which I use
only for RTP Stuff.
On reply route checks if rtpproxy is needed, if it is it is
activated. failure_route checks if rtpproxy was activated and if
it was deactives it. The only other code in the failure route is
this :
if ( t_was_cancelled() ){
exit ;
}
So, the problem is, when phones do not send BYE, what do I do? I
need resources freed up from Asterisk, RTP Proxy, and Kamailio
Dialog, and I need the call to be canceled with my provider and I
need for my ACC to recieve some indication as to when the call
ended. Obviously it won't be exact to the second, but I kind of
thought that the SIP Session Timers would notice the phone was
gone and would generate a BYE or something?
What do I do?
Thanks,
David
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