Hi Ranjit,

   Thanks for replying.

   I haven't completely understood the definition of T4 timer. Could you
please explain it?

Thanks,
Jagan

On 6/18/07, Avasarala Ranjit-A20990 <[EMAIL PROTECTED]> wrote:

 Hi Jagan

Timer T4 represents the amount of time the network will take to clear
messages between client and server transactions. The default value for T4 is
5 seconds. Also T4 is a constant and not set based on T1. For more details
refer to Sec 17.1.2.2 of RFC 3261.
**
*Regards*
*Ranjit *


 ------------------------------
*From:* Jagan Mohan [mailto:[EMAIL PROTECTED]
*Sent:* Monday, June 18, 2007 1:33 PM
*To:* SIP list
*Subject:* [Sip] Effect of SIP T1 timer value on T4 timer

 Hi,

   I would like to how T4 timer needs to be set, based on the value of T1?
If round trip delay is, say 20s, then T1 needs to be set to 20s. To what
value should T4 timer, needs to be set now? Should T4 needs to be
set as (Actual value of T1)*(default value of T4/ default value of T1)? If
yes, could you please explain the logic behind this.

Thanks,
Jagan


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