Hi all,

Is there a standard mechanism defined to generate 'nonce' value used in Digest 
authentication for SIP?.
Also, is it MANDATORY for UA to re-submit request having credentials with same 
call-id for which it received challenge?

I mean, is the following is valid?

UA1 ------------(INVITE Call-id 1)------> Proxy
UA1 <-----------(407 Call-id 1)----------- Proxy
UA1 ------------(ACK Call-id 1)----------> Proxy
UA1 ------------(INVITE having credential with Call-id 2)------> Proxy

Thanks,
Nagendra.



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