[SIPForum-discussion] Expire Header

[DO THAI DANG]

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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