[OpenSER-Users] FreeRADIUS-CDRTool Prepaid Connector 1.1 Released

[Dan-Cristian Bogos]

Hi Andy,

The original config was built with Yate in mind due to openser incapacity
(before release 1.3) of disconnecting the calls. Since 1.3.0 the dialog
module should be able to timeout the calls, in theory you should no longer
need extra software like Yate.

I would still recommend using Yate combined with OpenSER in the case you are
doing some sort of "Carrier business", for  the following reasons:
1. It creates two different legs for your call (in and out) same as Cisco
does, and hides one side from the other (eg. removes the via headers and any
revealing ip information inside SDP - so your partners should not know where
the traffic comes from).
2. You have more protocols available in.
3. Accounting it is bit more accurate (you have the session total duration
inside the accounting packets), so radius will be no longer responsible of
calculating the session durations from timestaps.
4. Yate can work in rtp_forward mode, therefore no extra overhead given by
rtp processing.

So basically what the connector does (as specified in the documentation),
for each call which is authorized by radius, the connector will ask
permission from cdrtool. If permission is granted, it will return in a avp
to openser the maximum duration allowed for the call (timeout value) plus
credit available, for the case of special uas able to display that.
By receiving accounting stop packet, the connector will inform cdrtool about
call disconnection therefore clearing the lock and debiting the balance
inside cdrtool. The rtp stream has nothing to do with this scenario, so you
don't need to touch your NAT support configuration, it's all in the
signaling.

Let me know if you need further info.

Cheers,
DanB





On Feb 13, 2008 12:53 PM, A.smith <a.smith at ukgrid.net> wrote:

> Hi Dan/List,
>
>  I was reading the post below and trying to understand how your config
> works. If
> you are implementing this with something like a Cisco PSTN then you need
> all
> of
> these: PSTN, OpenSER, Mediaproxy and Yate involved in the SIP route? Does
> the RTP
> stream have to route via Yate and mediaproxy? :S
>
> thanks for any help! cheers Andy.
>
> >Hey Marc,
> >
> >I use Yate for doing that. It is simple and works out of the box (with
> adding few
> >lines in configs of course).
> >
> >I take Session timeout returned from connector and pass it to yate in a
> sip
> header
> >Process that header in regex routing and define the value as timeout for
> session.
> >Yate knows by default that when a session has a parameter "timeout"
> returned
> >from routing to disconnect the call when timeout is hit.
> >
> >Let me know if you need further info, so I can send you some config files
> if you
> >want to. You can contact me on IRC for live support (DanB).
> >
> >
> >All the best,
> >DanB
>
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