IMPORTANT: HUGHES SOFTWARE SYSTEMS LTD. (HSS) IS NOW FLEXTRONICS SOFTWARE
SYSTEMS LTD. (FSS)

Hi,

 In RFC 3261 Sec 17.1.2.1 explained that  Non-INVITE transactions do not
make use of ACK.  They are
simple request-response  interactions.

Regards
Partha

------------------------------------------------------------------
R.Parthasarathi
Flextronics Software Systems (FSS)- B'lore- India
Off: +91-80-51069088  Mob: +91-9448383781
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             "Todd Huang"                                                  
             <[EMAIL PROTECTED]                                             
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             ia.edu                                                Subject 
                                       [Sip-implementors] Question about   
                                       acknowledgement of 401/407          
             05/30/2005 03:43          response                            
             PM                                                            
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           




Hello:

    Does the UAC need to send ACK for 401/407 response code for any
non-INVITE request
message (for example, BYE, REFER, SUBSCRIBE,....)?

    Thanks.

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