Voice RRS feed

  • Question

  • hi all,

    i have installed Lync 2010 with edge. 


    when calling

    •    internal user to internal -  works
    • internal to external  - the Session is established.  internal user can hear an external user's voice but an external user - can't.
    • external to internal - not works.

    i fined this error:

    DNS resolution failed for the external SIP server address sip.mydomain.com retrieved during server discovery. Verify your topology configuration or contact your support team.

    but nslookup for sip.mydomain.com   has a result.

    can any one help me.



    Friday, December 12, 2014 1:12 PM


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