[SIPForum-discussion] Expire Header

[Rastogi, Vipul (Vipul)]

>>>>> when the INVITE don't contain Expires header so 1 hour is the
default time that UAC would fire off UAS.
 
There is not default value to Expires, if this header is not present in
INVITE msg. Default vaule is only valid in REGISTER.
 
Vipul Rastogi

________________________________

From: discussion-bounces at sipforum.org
[mailto:discussion-bounces at sipforum.org] On Behalf Of DO THAI DANG
Sent: Tuesday, September 23, 2008 9:22 AM
To: Keyur Amin
Cc: discussion at sipforum.org
Subject: Re: [SIPForum-discussion] Expire Header


Dear every poeple ! 

Follow my opinion,Some request message like REGISTER which its Expires
header field is not mandatory.
when the INVITE don't contain Expires header so 1 hour is the default
time that UAC would fire off UAS.

you can check this information in RFC 3261. 

thanks & regard.



On Tue, Sep 23, 2008 at 5:23 AM, Keyur Amin <fossil0681 at yahoo.com>
wrote:


	Hello All,
	 
	Currently, the expected behavior for an INVITE with Expires
header is:
	 
	      If the request is an INVITE that contains an Expires
header
	         field, the UAS core sets a timer for the number of
seconds
	         indicated in the header field value.  When the timer
fires, the
	         invitation is considered to be expired.  If the
invitation
	         expires before the UAS has generated a final response,
a 487
	         (Request Terminated) response SHOULD be generated.
	
	What is an INVITE doesnt containt Expires header? Is there a
default timer that would fire off UAS?

	 
	Thanks,
	Keyur Amin
	 
	 
	 
	 

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