Hi chen,
   
   the scenario I illustrated is not very clear, I'm sorry.
   User A has setup a dialog with User B , and User A sends BYE to terminate the 
dialog.....later is the scenario I mentioned in the first letter.

Best Regard.

>Stateful Proxy will answer 481 Call/Transaction Does Not Exist
>and ignore this INVITE.
>
>----- Original Message -----
>From: "feng zhang" <[EMAIL PROTECTED]>
>To: <[EMAIL PROTECTED]>
>Sent: Tuesday, August 20, 2002 4:31 PM
>Subject: [Sip-implementors] Stateful Proxy
>
>
>> Hi All,
>>
>>    Can a Stateful Proxy do that in the scenario below:
>>
>>    User A                   Stateful Proxy                   User B
>>      |                            |                            |
>>      |         BYE                |                            |
>>      |--------------------------->|           BYE              |
>>      |                            |--------------------------->|
>>      |                            |           200 OK           |
>>      |                            |<---------------------------|
>>      |          200 OK            |                            |
>>      |         X <----------------|                            |
>>      |          line is down and User A does not receive 200 OK, so
>>      |         User A resends BYE |
>>      |                            |
>>      |         BYE                |
>>      |--------------------------->|
>>                                    Here, once a stateful proxy receives a
>retransmitted
>>                                    BYE, can the proxy sends 200 OK to User
>A ?
>>                                    or the proxy still delivers the BYE to
>User B, and
>>                                    let User B resend 200 OK?
>>
>>     Thanks a lot to give me an answer!
>>
>>
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>
>
>
>.

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