Hi All ,

  I  have some doubts . Below Registration flow.

    1. Register  ( Register, To, From-tag=abcd Call_ID=xyz, Cseq=1 Register)
    2. 401  Unauthorized  ( To-tag=1234, From-tag=abcd Call_ID=xyz, Cseq=1
Register)
    3. Register ( Register , To, From tag=abcd, Call_ID=xyz, Cseq=2
Register)

I would like to know the What is difference between two Register(1 and 3)
..Why Cseq is difference even though there is no change in Call_ID.?

Why 2nd Register does not contain the to- tag,where is the both the
Register Request contain same call id

Please clarify the doubts .

Thanks in Advance ....

-- 

*Thanks and Regards,*
*Prakash (+918056167818)*
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