See inline.

-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of
[EMAIL PROTECTED]
Sent: Thursday, April 19, 2007 1:37 PM
To: [email protected];
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Subject: [Sip-implementors] Response for re-invite after Bye is sent?

Hi

I have a scenario where a call is established between UA1 and UA2.

UA1 sends a Bye to UA2.  In the mean time, UA2 send re-invite to UA1.

UA1 --> Bye--> UA2
UA1 <-- re-Invite <-- UA2

When UA2 receives the Bye, it replies with 200.

What is the correct response for UA1 to reply to the re-Invite before
UA1 receives the 200 for Bye?

[US] It could be specific to UA1 implementation. UA1 can send 481 to the
re-INVITE if it has cleanup the resources after sending BYE to UA2.
When UA1 received re-INVITE, it has a pending BYE transaction. This
means UA1 is not intested in keeeping the session alive as it has sent
BYE already. So, 4XX might be the proper answer. In this case 481 might
be the proper response.

Thanks

Guang
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