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Call setup between externally connected Lync clients RRS feed

  • Question

  • Hi All,

    What happens if there are two externally connected Lync clients which have the same local IP address?

    Will the call fail or connect through reflexive or relay addresses?

    Kind regards

    Maciek

    Thursday, February 7, 2013 3:43 PM

Answers

  • To elaborate more on that, Edge server use ICE (Interactive Communication Establishment) to find out the most suitable way to route RTP. It'll have a candidate list where the first candidate will be Host to Host (STUN) and next one will be using Edge server as a Relay (TURN)


    Thamara. MCTS, MCITP Ent Admin, Specialized in U.C Voice OCS 2007 R2 Z-Hire -- Automate IT Account creation process ( AD / Exchange / Lync )

    Friday, February 8, 2013 12:55 PM

All replies

  • Hi, 

    I assume that those client are not in same place. if they are, it'll be a conflict and one of the clients will not connect at all. Externally connected in 2 different places but has the same local IP, Edge will know that even they have the same local IP, their Public IP subnet is different and there won't be any issues with the RTP connectivity.


    Thamara. MCTS, MCITP Ent Admin, Specialized in U.C Voice OCS 2007 R2 Z-Hire -- Automate IT Account creation process ( AD / Exchange / Lync )

    Thursday, February 7, 2013 11:11 PM
  • Hi Thamara,

    Thanks for the answer. Of course I'm reffering to the second situation.

    In this particular scenario, will the endpoints connect through reflexive addresses or the relay? Or it depends?

    Kind regards

    Maciek

    Friday, February 8, 2013 8:30 AM
  • Hi,

    It depend on, how the clients could be reached. If a Peer to Peer call is possible the RTP stream goes direct between both clients.


    regards Holger Technical Specialist UC

    Friday, February 8, 2013 8:41 AM
  • To elaborate more on that, Edge server use ICE (Interactive Communication Establishment) to find out the most suitable way to route RTP. It'll have a candidate list where the first candidate will be Host to Host (STUN) and next one will be using Edge server as a Relay (TURN)


    Thamara. MCTS, MCITP Ent Admin, Specialized in U.C Voice OCS 2007 R2 Z-Hire -- Automate IT Account creation process ( AD / Exchange / Lync )

    Friday, February 8, 2013 12:55 PM