[SIPForum-discussion] Registration timer

[Shakthi]

Hi boris,
 
   So, the timer cache is cleared before every re-registration?
Is there any rfc's reffering to this point?
 


--- On Wed, 8/6/08, sreekant nair <sreekant_nair at yahoo.com> wrote:

From: sreekant nair <sreekant_nair at yahoo.com>
Subject: Re: [SIPForum-discussion] Registration timer
To: "Boris vercher" <boris.vercher at ilexia.com>, shakthi_msc at yahoo.com, "SIP" <discussion at sipforum.org>
Date: Wednesday, August 6, 2008, 12:59 AM






Very Interesting. 

Is "registration timer /2" specified in any RFC? or just an industry accepted practice? I could not find any reference in RFC 3261.

Thanks in advance

Regards
Sreekant



----- Original Message ----
From: Boris vercher <boris.vercher at ilexia.com>
To: shakthi_msc at yahoo.com; SIP <discussion at sipforum.org>
Sent: Tuesday, August 5, 2008 11:52:28 AM
Subject: Re: [SIPForum-discussion] Registration timer







You have to re register at «  registration timer  / 2 » even if a sip registrar have to support  “ registration timer  “ + 10s, before clearing resgistration, if no register keep alive occur.
 
So re registration occurs before “ registration timers expires “. Otherwise you can be unregistered during 1 or 2s ( for example )
 
When you reregister the timer is reset to the new value.
 
However when an UA send a register with “ registration timer  “, the value that will be used, will be the timer “ registration expires “ sent back by registrar. And not the original one sent by UA.
 
Boris 
 

From: discussion-bounces at sipforum.org [mailto:discussion-bounces at sipforum.org] On Behalf Of Shakthi
Sent: mardi 5 août 2008 14:35
To: SIP
Subject: [SIPForum-discussion] Registration timer
 





During the SIP registration, an re-registration will occur only when the registration timer expires. My question is, "Will the 'expired timer' from the cache is cleared for every cycle before the re-registration occurs?"

 

 

 

Thanks in Advance

 

  -Shakthi
 



      
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