[SR-Users] PRE-PAY update timer

[Carsten Bock]

Hi Steven,

If you want, I can provide you an example config based on ims_charging and
ims_ocs without IMS. Even though, we do not use ims_ocs anymore in new
deployments, we still have it running in production.

Thanks,
Carsten

Stephen Bucklin <steve at telcoelectronics.uk> schrieb am Sa., 25. Mai 2019,
01:31:

> Alex,
> Thanks so much for that. A lot to play with in the morning.
> I did set up an rtimer that called a route that then did checks if the
> number of dialogs > 1.
> I think I will keep playing with the time slices as the user may divert,
> conference etc so keeping the charging real time is my goal. There is also
> the potential of data usage at the same time. The credit is calculated on
> set up for the dialled path (mo and term costs) if each call and the
> charging calculator will then "reserve" money for 30 seconds and allow
> connection. Every 30 seconds it would request another 30 using a uuid
> passed in set up.
> I am hoping this will minimise Balance inconsistency for multiple calls +
> sms + data, with the actual accounting being done upon completion.
> I did not even think of jsonrpc, that will keep me reading tomorrow!
> Thanks,
> Steve
>
> On Sat, 25 May 2019 at 00:17, Alex Balashov <abalashov at evaristesys.com>
> wrote:
>
>> Well, the generic answer to the question of how to periodically do
>> something in the background is 'rtimer':
>>
>> https://kamailio.org/docs/modules/5.2.x/modules/rtimer.html
>>
>> This can be combined with putting dialogs in an `htable` (perhaps using
>> the dialog module's start/end event_routes) and walking over the
>> entries in a background rtimer route:
>>
>>
>> https://kamailio.org/docs/modules/5.2.x/modules/htable.html#htable.f.sht_iterator_start
>>
>> Alternately, one can use jsonrpc_exec()
>>
>>
>> https://kamailio.org/docs/modules/5.2.x/modules/jsonrpcs.html#jsonrpcs.f.jsonrpc_exec
>>
>> to run 'dlg.list':
>>
>> https://kamailio.org/docs/modules/5.2.x/modules/dialog.html#dlg.r.list
>>
>> ... and iterate over the output with the help of the 'jansson' module
>> (JSON parser):
>>
>> https://kamailio.org/docs/modules/5.2.x/modules/jansson.html
>>
>>
>> But honestly, I'd ask yourself whether this extra layer of complexity is
>> truly worth it. For a lot of prepaid setups, live balance decrementing
>> isn't worth the bother.
>>
>> An alternate and simpler approach is to just let the call be initiated
>> if the balance is > 0 at the time the call is made, then deduct from the
>> balance when the call ends.
>>
>> Yeah, it means someone's free to make a 4 hour call without the prepaid
>> credit to support it, and worse yet, possibly a number of 4 hour calls
>> initiated simultaneously. But most calls aren't like that, and from a
>> business perspective, is it really worth the headache of live
>> decrementing and all the moving parts involved?
>>
>> Maybe it is, but I would at least ask the question.
>>
>> -- Alex
>>
>> On Fri, May 24, 2019 at 06:18:19PM +0100, Steve Bucklin wrote:
>>
>> > Hello all (again),
>> >
>> > I am looking at a 'good' method to start a call with "chunks" of time
>> > allocated. I wish the initial call to check a credit, and if credit is
>> good,
>> > allow a small amount of time (say 30 seconds). I have enabled DIALOG and
>> > have looked at CNXCC, but am confused!
>> >
>> > When the initial 30 seconds runs out, I want to authorise another 30
>> > seconds, etc, etc, etc. I have started to play and set a dialog timer
>> that
>> > expires to a route, and then can 'return' allowing the call to continue
>> -
>> > BUT was not able to reset the dialog timer to trip again after another
>> 30
>> > seconds.
>> >
>> > I tried to 'set_max_time' on cnxcc, but this did not seem to trip the
>> event
>> > route upon timeout?
>> >
>> > Does anyone have a pointer to any examples? I also am unsure of how to
>> > update the timer and keep a call in play!
>> >
>> > Steve
>> >
>> >
>> >
>> > _______________________________________________
>> > Kamailio (SER) - Users Mailing List
>> > sr-users at lists.kamailio.org
>> > https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>>
>> --
>> Alex Balashov | Principal | Evariste Systems LLC
>>
>> Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free)
>> Web: http://www.evaristesys.com/, http://www.csrpswitch.com/
>>
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