[OpenSIPS-Users] Failover and accounting

[Bogdan-Andrei Iancu]

Hello Chen-Che,

If the B server has the dialog information, it can generate the cdrs for
the call on BYE time, even if the INVITE was actually processed by A.

What you need to do is, when doing the failover, to make B to load the
ongoing dialogs left from A - you can do this by dlg_db_sync MI command
- http://www.opensips.org/html/docs/modules/1.9.x/dialog.html#id295645

Best regards,

Bogdan-Andrei Iancu
OpenSIPS Founder and Developer
http://www.opensips-solutions.com


On 06/26/2013 01:10 PM, microx wrote:
> Hi all,
>
> In my environment, I use two SIP proxy servers A and B to achieve better
> performance. For failover support, if one proxy server is down, the SIP
> messages will be directed to another alive proxy server. Each SIP proxy
> server keeps track of the dialog information in the acc table for
> accounting. From my understanding, the accounting is done based on the
> requirement that the INVITE and BYE of the same dialog are handled by the
> same SIP proxy server.
>
> Suppose that an INVITE is processed by proxy server A. Then, proxy server A
> is down due to some factor. Finally, the associated BYE will be directed to
> and handled by proxy server B. In such a case, proxy server B will not be
> able to do accounting for this dialog. Is is possible to achieve accounting
> in such failover scenarios? Thanks for any comment.
>
> Best regards,
> Chen-Che
>
>
>
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