[SIPForum-discussion] getting 481 after sending bye msgg

[AMIT ANAND]

Hi,

I have faced this problem earlier, my switch was swaping field of TO and
FROM headers , please check all headers of bye ur sending.

Amit Anand
91-9910211901


On 6/16/08, Raj Jain <rj2807 at gmail.com> wrote:
>
> > "ajay more" <etrx.ajay at gmail.com>
> >         We are facing the problem while disconnecting call. When call is
> > disconnected from B party i.e from our side (we are sending req: Bye),
> > instead of getting OK, we are getting status: 481 transaction id not
> found.
> >
> > what will be this problem?
>
> A 481 response means that the UAS cannot match a dialog corresponding
> to your mid-dialog request (BYE in this case). There are many reasons
> this can happen:
>
> 1. UAC's BYE is constructed incorrectly (for instance, check the local
> and remote tags are in the correct place)
> 2. UAS may have lost state (for instance, it rebooted and came back up)
> 3. Session expired (e.g. the UAS dropped its dialog after a session
> refresh failed)
> 4. UAS silently dropped the session for whatever reason (e.g. due to
> lack of media)
> 5. BYE race condition (both ends send BYE at the same time; one end
> gets 200 other gets 481)
>
> --
> Raj Jain
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