[Serusers] When the UA crash (network or power) : the call continue!!!!

[Java Rockx]

Jiri,

Yes I agree. I guess I just answered the question too abruptly. Thanks
for the extra info.

Now that I think about this more I prefer that the SIP UA supports The
Session-Expires and Min-SE headers. That way SIP->SIP calls also get
re-INVITEs. I know that the Sipura 3000 has this - I just wish more
ATAs supported this.

Regards,
Paul


On Wed, 23 Mar 2005 10:09:56 +0100, Jiri Kuthan <jiri at iptel.org> wrote:
> Hi Paul,
> 
> I would actually not tend to say "the only solution" -- for PSTN
> accounting accuracy, which mostly matters, use of gateways with
> session-timer work well. Other cases to cut a call do not appear
> compelling to me -- in the end, phones will detect the conditions
> and hang up.
> 
> B2BUAs have also side-effect, at least weaker scalability.
> 
> -jiri
> 
> At 12:51 PM 3/22/2005, Java Rockx wrote:
> >The only real solution to guarantee call control is to use a B2BUA as
> >ser is 100% unaware of call status. Ser only maintains transaction
> >state, not call state.
> >
> >If your SIP UAs support the Session-Expires header then they will
> >automatically send re-INIVITES which will disconnect the call and send
> >a BYE message to SER in the event of a failure.
> >
> >Regards,
> >Paul
> >
> >
> >On Tue, 22 Mar 2005 10:43:28 +0100, Nicolas Ruiz <nruiz at vivaction.com> wrote:
> >>
> >> Hi,
> >>
> >> How can I verify if my UA have a network crash or a power crash, to cut the
> >> call ? can I send Keep ALIVE ???
> >>
> >> Thansk a lot.
> >>
> >> Regards
> >>
> >> Nicolas RUIZ
> >> France, Paris
> >>
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> >>
> >>
> >>
> >
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> --
> Jiri Kuthan            http://iptel.org/~jiri/
> 
>