Hi All,
Could any one please help me out on requested queries as below:

1. How to handle a duplicate 407 or 401 messages received.
2. How do we identify the received message is a duplicate message.
3. Is there any specification to handle a duplicate messaging.

The scenario is as follows:

UAC                                     Proxy
***************************************
INVITE--->
                             <---- 407 for Invite
INVITE with Auth     --->  <---- 407 for Invite ( before receiving
INVITE with Auth)
                             <---- 200 OK

Proxy re-transmits the 407 duplicate message before receiving INVITE with Auth.
UAC received the duplicate 407 response after sending INVITE with 407.



Thanks,

Gupta
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