[OpenSIPS-Users] How to limit channel on bunch of called DIDs?
Johnson Pajayat
cmpajayat at gmail.com
Mon Jan 11 04:54:01 CET 2010
Hi Bogdan,
I was able to implement the channel limiting on one DID by using a variable
instead of AVP and replacing all instances of $tU to $rU. Now, I want to
limit the channels to a set of DIDs and I'm thinking of implementing a
"while loop" and "counter" in order to achieve it. Is this an efficient way
of doing the limiting on a set of DIDs? One problem I can think with the
"while loop" and "counter" will be how to deduct those calls that were
already hung up by the caller. Again, inputs will be greatly appreciated.
Thank you very much.
--conpaj--
On Fri, Jan 8, 2010 at 4:53 PM, Bogdan-Andrei Iancu
<bogdan at voice-system.ro>wrote:
> Hi
>
> It is hard to review scripts to see where the problem is, but I will
> help you with some hints on troubleshooting.
>
> First of all you need to be sure you put in the profiles the calls you
> wants - put some xlog() around the place where you add the call in the
> profile (in the script). Be sure you create the dialog (use
> create_dialog() before adding it into profile). After that, you can
> check with MI function to see the profile content
> (http://www.opensips.org/html/docs/modules/devel/dialog.html#id272772)
>
> Regards,
> Bogdan
>
> Johnson Pajayat wrote:
> > Hello Bogdan,
> >
> > I appreciate a lot your response regarding my inquiry. I've been
> > reading that tutorial as well as the AVPops and dialog modules
> > documentation for about a month now. I tried to adapt that route block
> > for inbound calls and here's a portion of what I have on our OpenSIPS
> > 1.5 config file:
> >
> >
> -------------------------------------------------------------------------------
> > modparam("dialog", "dlg_flag", 4)
> > modparam("dialog", "profiles_with_value", "inbound")
> >
> > ......
> >
> > } else if (uri=~"sip:1234567890 at .*") {
> > route(3);
> > rewritehost("111.222.111.222");
> >
> > .......
> >
> > route[3]
> > {
> > ## have we done our checking on this call?
> > if(!isflagset(31))
> > {
> > # user has max channel limit set as preference
> > if(is_avp_set("$avp(s:channels)/n") &&
> > avp_check("$avp(s:channels)", "gt/i:0"))
> > {
> > # get the current calls for DID
> > get_profile_size("inbound","$tU","$var(calls)");
> >
> > # check within limit
> > if($avp(s:channels) > $var(calls))
> > {
> > xlog("L_INFO", "Call control: DID
> > '$tU' currently has
> > '$var(calls)' of '$avp(s:channels)'
> > active calls before this one\n");
> > $var(setprofile) = 1;
> > }
> > else
> > {
> > xlog("L_INFO", "Call control: DID
> > '$tU' channel limit exceeded [$var(calls)/$avp(s:channels)]
> > \n");
> > send_reply("487", "Request Terminated:
> > Channel limit exceeded\n");
> > exit;
> > }
> > }
> > else
> > {
> > $var(setprofile) = 0;
> > }
> >
> > call_control();
> >
> > switch ($retcode)
> > {
> > case 2:
> > # Call with no limit
> > case 1:
> > # Call with a limit under callcontrol
> > management (either prepaid or postpaid)
> > break;
> > case -1:
> > # Not enough credit (prepaid call)
> > xlog("L_INFO", "Call control: not
> > enough credit for prepaid call\n");
> > acc_rad_request("402");
> > sl_send_reply("402", "Not enough
> credit");
> > exit;
> > break;
> > case -2:
> > # Locked by call in progress (prepaid
> > call)
> > xlog("L_INFO", "Call control: prepaid
> > call locked by another call in progress\n");
> > acc_rad_request("403");
> > sl_send_reply("403", "Call locked by
> > another call in progress");
> > exit;
> > break;
> > default:
> > # Internal error (message parsing,
> > communication, ...)
> > xlog("L_INFO", "Call control: internal
> > server error\n");
> > acc_rad_request("500");
> > sl_send_reply("500", "Internal server
> > error");
> > exit;
> > }
> >
> > if($var(setprofile) > 0)
> > {
> > create_dialog();
> > set_dlg_profile("inbound","$tU");
> > }
> >
> > ## mark checking done
> > setflag(31);
> > }
> > }
> >
> > ----------------------------------------------------------------
> >
> > And here are the logs appearing on /var/log/messages:
> >
> > Jan 6 05:53:22 opensips cdrtool[20998]: MaxSessionTime Duration=36000
> > CallId=28a35ce1-4d7a175-25a58684 at 124.123.234.229
> > <mailto:28a35ce1-4d7a175-25a58684 at 124.123.234.229> From=si
> > p:12135551234 at 124.123.234.229 <p%3A12135551234 at 124.123.234.229> <mailto:
> p%3A12135551234 at 124.123.234.229 <p%253A12135551234 at 124.123.234.229>>
> > Gateway=124.123.234.229 To=sip:1234567890 at 124.123.234.241:5060
> ;user=phone
> > Jan 6 05:53:22 opensips cdrtool[20998]: MaxSessionTime=unlimited
> > Type=postpaid CallId=28a35ce1-4d7a175-25a58684 at 124.123.234.229
> > <mailto:28a35ce1-4d7a175-25a58684 at 124.123.234.229>
> > BillingParty=12135551234 at 124.123.234.229
> > <mailto:12135551234 at 124.123.234.229>
> > Jan 6 05:53:22 opensips call-control[21263]: Call id
> > 28a35ce1-4d7a175-25a58684 at 64.77.234.229
> > <mailto:28a35ce1-4d7a175-25a58684 at 64.77.234.229> of
> > 12135551234 at 124.123.234.229 <mailto:12135551234 at 124.123.234.229> to
> > sip:1234567890 at 124.123.234.241:5060;user=phone is postpaid not limited
> > Jan 6 05:53:22 opensips /usr/local/sbin/opensips[1636]: new branch at
> > sip:1234567890 at 111.222.111.222:5060;user=phone
> > Jan 6 05:53:22 opensips /usr/local/sbin/opensips[1640]: incoming reply
> > Jan 6 05:53:22 opensips /usr/local/sbin/opensips[1636]: incoming reply
> > Jan 6 05:53:22 opensips /usr/local/sbin/opensips[1636]: ACC:
> > transaction answered: timestamp=1262786002;method=INVITE;from_t
> > ag=14fe61da-25a58684-e5ea4d40;to_tag=as6a53f46c;call_id=
> 28a35ce1-4d7a175-25a58684 at 64.77.234.229
> > <mailto:28a35ce1-4d7a175-25a58684 at 64.77.234.229>;code=200;reason=OK
> > Jan 6 05:53:22 opensips /usr/local/sbin/opensips[1637]: Recive call
> > variable : <null> <null>
> >
> > As for the channels limit value, do I have to define it on
> > usr_preferences table? I have these records on the said table:
> >
> > mysql> select * from usr_preferences;
> >
> +----+------+------------+--------+---------------+------+------------+---------------------+
> > | id | uuid | username | domain | attribute | type | value
> > | last_modified |
> >
> +----+------+------------+--------+---------------+------+------------+---------------------+
> > | 1 | | 1234567890 | | channels | 0 | 3
> > | 1900-01-01 00:00:01 |
> > | 2 | | 0 | | called_number | 0 | 12135551234
> > | 1900-01-01 00:00:01 |
> >
> +----+------+------------+--------+---------------+------+------------+---------------------+
> > 2 rows in set (0.00 sec)
> >
> > Unfortunately, I'm not quite sure on what section or portion of
> > opensips.cfg file I will have to put the loading of user preferences
> > to the AVPs. Any inputs or suggestions will be greatly appreciated?
> >
> > Thank you very much.
> >
> > --conpaj--
> >
> >
> > On Wed, Jan 6, 2010 at 11:26 PM, Bogdan-Andrei Iancu
> > <bogdan at voice-system.ro <mailto:bogdan at voice-system.ro>> wrote:
> >
> > Hi Johnson,
> >
> > The idea is to use dialog profiles to keep trace of the ongoing calls
> > (per resource). As a first step take a look at the following
> tutorial:
> >
> > http://www.opensips.org/Resources/DocsTutConcurrentCalls
> >
> > Regards,
> > Bogdan
> >
> > Johnson Pajayat wrote:
> > > Hi!
> > >
> > > I'm a newbie with OpenSIPS administration and configuration and I
> > > searched on the mail archives regarding limiting the channels
> > but only
> > > found the site regarding "Concurrent calls limitation". I've been
> > > trying to grasp the whole idea about AVPops and dialog module but
> > > unfortunately I'm having a hard time understanding it. If ever,
> does
> > > anyone here be kind enough to point me to any available documents
> or
> > > sample configurations file that will help me limit the channels on
> > > inbound calls to a single or group of DIDs? Implementation will be
> > > done static first and hopefully once I got the whole idea, will be
> > > implementing a dynamic one.
> > >
> > > Thank you very much.
> > >
> > > --conpaj--
> >
>
>
> --
> Bogdan-Andrei Iancu
> www.voice-system.ro
>
>
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>
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