[SIPForum-discussion] About branch and tag id in sip header

[rama kumar]

Call-ID header is used to identify the dialog and it is unique to that dialog.
   
  Branch Id is a parameter which is a part of Via Header. This is used to identify the perticular transaction created by the request.
   
  Thanks,
  Ramakumar D
  

Asha Pillai <asha.g.pillai at gmail.com> wrote:
  I just want to know wat is the basic difference between tah branch id and call id.

also in rfc its written that during registration between UAC and registrar always call id is unique for that combination.Is it like that for only REGISTER message
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