[OpenSIPS-Users] Ping both UACs when a call starts

Cesar Troncoso cesar.troncoso at wimaxtelecom.at
Wed Oct 8 10:25:43 CEST 2008

HI Jason!


I really appreciate your response. I was hopping that there were an "easier" way to do this. I also receive a suggestion that involves the use of sst module, but to do this at least one of the clients must support the use of Session Timers. The solution you suggested me involves some development in the top of dialog module and yes, this sounds interesting too.


I think I will try both solutions to see which one is the best for me.


Thank you very much and have a nice day.





Von: Jason Penton [mailto:jason.penton at smilecoms.com] 
Gesendet: Dienstag, 07. Oktober 2008 13:00
An: Andrew Pogrebennyk
Cc: Cesar Troncoso; users at lists.opensips.org
Betreff: Re: [OpenSIPS-Users] Ping both UACs when a call starts


Hi Cesar

AFAIK there is no functionality that exists to do what you are trying to do. What we had to do was write a child process within the dialog module that stores a hash of the dialog and a list of the the contacts (ip addresses) of the participants of the call. Then we have a timer that fires every x seconds and we traul through the dialogs pinging the devices to see if they 'are still there'. If any of the contacts dont respond within a predefined time, the dialog is torn down.



On Tue, Oct 7, 2008 at 12:45 PM, Andrew Pogrebennyk <andrew.pogrebennyk at portaone.com> wrote:

You should check the SST module: http://www.opensips.org/html/sst.html

Cesar Troncoso wrote:
> Hello!
> When a call starts I would like OpenSIPs to ping (by sending OPTIONS or
> INFO request) both UAC´s just to know if they are still there or for
> some reason they crashed or lost connectivity. In case they don't
> response, the call should be finished. What is the best way to do this?
> Thanks in advance!
> Cesar

Andrew Pogrebennyk

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Users at lists.opensips.org


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