OCS SDK (ServerAgent.dll) and SIP messages for telephony

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  I am designing an application that will use the OCS Server SDK (via the ServerAgent.dll) to tap into the SIP messages that flow back and forth from MOC. I am able to do that for IMs. However, when it comes to telephony, I am not sure of what SIP headers to use to properly differentiate the telephony SIP packets from the IM packets. More specfically, we would like to know when a MOC is receiving an incoming call and when it is making an outgoing call (assuming that the users are enabeld for enterprise voice).
  
  any ideas?
  

  Tuesday, May 26, 2009 8:13 AM