[asterisk-dev] T1 sip 500ms or 1s ?

[Eduardo Nunes Pereira]

Just was i thought, the first request after time expires are applying the
multiplier

On Thu, Jun 18, 2009 at 2:41 PM, Mark Michelson <mmichelson at digium.com>wrote:

> Eduardo Nunes Pereira wrote:
> > But, do the "qualify" equal "yes" have a influence over that rule ?
> > forgive my knowledge about asterisk internals, but "qualify" option is
> > used to send OPTIONS packages ? [ qualify=no ]
> >
> > And the first retry of REGISTER after expire time continues with delay
> > 1000ms
> >
>
> qualify sends OPTIONS requests to the peer. The time taken to respond to
> the
> OPTIONS is used as timer T1. If you do not have qualify enabled, then
> Asterisk
> uses a default of 500 ms for T1.
>
> Asterisk appears to be scheduling its first retransmission of requests
> after 2 *
> T1 instead of just using T1. This same logic is used for all request types
> that
> may be retransmitted.
>
> Mark Michelson
>
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-- 
Eduardo Nunes Pereira
Consultor de Informática e Internet
cel.: (48) 9989-2997
email: eduardonunesp at gmail.com
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