[SIPForum-discussion] regarding tag parameter in From header

[Roy, Nishant Kishore]

Hi All ,

Can anyone help me out with following question :


1)      What is the uses of From tag in from header .
AFAIK : it will be used in dialog creation which consist of tag from TO header and FROM header along with Call-ID , what else ?


2)      Is this mandatory in the initial INVITE message ? If not in which case it will be optional ?

Regards
Nishant

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