Hi Peter,
Thanks a lot for the reply.
Since I am new to SIPp I couldnt understand logic you had mentioned in the
mail.
The issue is that I have to test retry logic by sending a message in
3,6,12,16 and 30 seconds.
Please help me simulate a case using SIPp where I could achieve this logic.
It is not that I have to use timers so with some logic in SIPp I have to
achieve this scenario.
Thanks,
Shemida
Date: Wed, 21 Jul 2010 09:12:17 +0100
From: Peter Higginson <plh...@hotmail.com>
Subject: Re: [Sipp-users] Clarification regarding usage of Timers-T1,
T2 and F in SIPp
To: sipp_users <sipp-users@lists.sourceforge.net>
Message-ID: <col116-w55935a263315546f15d53d8a...@phx.gbl>
Content-Type: text/plain; charset="iso-8859-1"
SIPp is a test system, it approximates the correct algorithm by implementing
T1 and a retry counter.
Only some messages go 3,6,12,etc. others stay at a flat 3 - that is
implemented correctly and there is a max retry counter for each type.
You can set the values for T1 and the two max retry counters on the command
line. The default values give you the correct protocol defaults and you can
manipulate them to control T1 and F. T2 is not implemented (you don't get
there with default T1 and F).
Peter
Date: Tue, 20 Jul 2010 06:32:54 -0500
From: shemida.art...@gmail.com
To: sipp-users@lists.sourceforge.net
Subject: [Sipp-users] Clarification regarding usage of Timers-T1,T2 and F in
SIPp
I would like to get my doubts clarified regarding SIPp.
I would like to know how to use T1,T2 and F timers in SIPp.
I have to do this when I send a MESSAGE with T1 value set to 3 secs, T2
value set to 16 secs and F value set to 30 secs.
Second SIP MESSAGE transmitted after 3 seconds (i.e. after T1 expires) and
subsequently the SIP MESSAGE is transmitted in 6 sec, 12 sec.etc ( i.e. T1
sec, 2 *(2*T1) sec, 2 *2*(2*T1) sec, 2*2*2*(2*T1) .etc) time interval till
the time interval reach to 16 Sec (T2 Timer).
?
After reaching the re-transmission interval to 16 sec (T2 timer), then the
SIP MESSAGE will be re-transmitted after every 16 sec till the sum of the T1
and T2 time intervals reaches to the SIP Timer F expires (i.e. 30 sec). ?
The SIP MESSAGE is transmitted for 30 seconds (i.e. till Timer F expiry) in
3 sec, 6 sec, 12 sec, and 16 sec time intervals.
Note
: The last SIP MESSAGE re-transmission (i.e. 16 second interval) may not
happen, because the total sums of time intervals cross the SIP timer expiry
(i.e. 30 sec- Timer F).
Please clarify my doubt.
Thanks in advance,
Regards,
Shemida
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