On Mon, 2009-01-19 at 19:14 +0530, VG wrote:
> Hi,
> 
> I like to know what is the default time for resending a request.
> 
> My Network is slow then How after how much time server sends  the
> message again.
> 
> Is there any Specific no that also determine that the same request
> will not be send again.

In sipX version 4.0, the resending schedule is:

original send: 0
1st resend: 100 milliseconds
2nd resend: 300 msec (= 200 msec after the 1st resend)
3rd resend: 700 msec
4th resend: 1500 msec (= 1.5 seconds)

This was discussed at length in the thread starting with
http://list.sipfoundry.org/archive/sipx-dev/msg15757.html

As far as I know, this schedule works acceptably in networks with
round-trip-times from under 10 msec through 1 second, which covers all
the use cases that I know of.

Exactly what problem are you having with your network?  What is its
round-trip-time?  What is its packet-loss rate?

Dale


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