Thursday, January 28, 2021

SIP main functions

  1. User location - locate the end user geographically
  2. User availability - available, busy, DND presence infomation
  3. User capability - determine the media being used and parameters associated with the media
  4. Session setup - establish session parameters for both caller and callee
  5. Session management - transfer a call, end a call, or modify session paramaters