Hi,
      We can send the authentication information within the request without
the UA being challenged with a 401/407. The registrar/proxy  will verify
the credentials submitted by the UA and if the same are valid ,
authentication will be considered successful.
Regards
Nisha


                                                                           
             Rayees Khan                                                   
             <[EMAIL PROTECTED]                                             
             tronicssoftware.c                                          To 
             om>                       jijo <[EMAIL PROTECTED]>   
             Sent by:                                                   cc 
             sip-implementors-         Sip-Implementors                    
             [EMAIL PROTECTED]         <[email protected]>  
             ia.edu                                                Subject 
                                       Re: [Sip-implementors] SIP          
                                       Authentication                      
             11/30/2005 01:51                                              
             PM                                                            
                                                                           
                                                                           
                                                                           
                                                                           





I thinkthe same can be done but withing a dialog. Infact, for a
registeration refresh the UA is suppposed to send request with credentials.


regards
Rayees

[EMAIL PROTECTED] wrote: -----

 To: Sip-Implementors <[email protected]>
 From: jijo <[EMAIL PROTECTED]>
 Sent by: [EMAIL PROTECTED]
 Date: 11/29/2005 08:51AM
 Subject: [Sip-implementors] SIP Authentication

 Hi All,

 Can we send Authentication information in INVITE/Register without
 Challenge ( i.e. on 407/401 response )

 regards
 Jijo

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