[OpenSIPS-Users] Restrict Simultaneous-Use

[Ovidiu Sas]

On Thu, Mar 5, 2009 at 3:56 PM, Iñaki Baz Castillo <ibc at aliax.net> wrote:
> El Jueves, 5 de Marzo de 2009, Brett Nemeroff escribió:
>> I'm a little confused here. I haven't used SST before so I'm sure I'm
>> missing some background here.. But if I enable SST module, and set an
>> expires at say, 120 seconds, don't I get an invite refresh roughly every
>> 120 seconds? then if I don't I send a BYE out both ways.
>>
>> What part of that may be unsupported. Part I'd be worried about is if I
>> tell the UAC "Session-expires: 120" and it simply doesn't care, doesn't
>> send the refresh and then BYEs get sent out and the dialog is torn down..
>
> Hi, I recommend you reading the RFC 4028 (Session Timers):
>  http://tools.ietf.org/html/rfc4028
>
> It explains clearly the limited role of a proxy when handling with
> SessionTimers.
>
> As I already said before, SST only works if caller and/or callee supports it
> (and uses it).

That's the role of the sst module: to enforce sst if one of the
participants supports it.

Regards,
Ovidiu Sas