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The Mediation Server service has encountered a major call completion problem with the Front End. on SBS server RRS feed

  • Question

  • The Mediation Server service has encountered a major call completion problem with the Front End.

    Front End FQDN: sbsserver01.local
    Cause: Calls to this Front End failed 5 times with failure final responses.  Check other MOM alerts for more details.
    Resolution:
    If the failure is due to CALL_FAILURES_DUE_TO_UNEXPECTED_PROXY_INTERACTION, there is some internal issue with the Front End's link to the Mediation Server (misconfiguration, load) that is causing it not to complete calls.  Please consult the failure reports on the Monitoring Server for more details.

    Any advise for this error?

    every day have two error but it will resume after few mins.

    Thanks.

    Thursday, January 26, 2017 2:43 AM

All replies

  • Hi Mick,

    Welcome to post in our forum.

    Please check the TCP port in the PSTN gateway. The port you set in topology builder should be consistent with PSTN gateway.

    Then try to publish the topology builder again and make sure the replication is correct.

    You could also try to use SFB server logging tool on the FE server and Mediation server then check if there are any errors

    Here is the link of using the Lync logging tool:

    http://blog.schertz.name/2011/06/using-the-lync-logging-tool/

     Note: Microsoft is providing this information as a convenience to you. The sites are not controlled by Microsoft. Microsoft cannot make any representations regarding the quality, safety, or suitability of any software or information found there. Please make sure that you completely understand the risk before retrieving any suggestions from the above link.


    • Edited by Alice-Wang Friday, January 27, 2017 3:24 AM
    Friday, January 27, 2017 3:21 AM
  • The event id happen suddenly,  The port is correct , all the call route is running normal.
    Saturday, January 28, 2017 11:03 AM
  • Hi Mick,

    Thanks for your response.

    What issue is caused by this error ?

    Please make sure your SFB server with the latest update then test again.


    Regards,

    Alice Wang


    Please remember to mark the replies as answers if they help.
    If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com.

    Monday, February 6, 2017 2:58 AM
  • Hi Mick, 

    Make sure the servers are updated with the latest CUs. Did you try to restart the server once and then try to monitor the behavior. 


    Linus || Please mark posts as answers/helpful if it answers your question.

    Monday, February 6, 2017 7:03 AM
  • Didn't restart the SBS server, but no impact when this event occur.
    Monday, February 6, 2017 11:27 AM
  • Hi Mick TT,

    Thanks for your response.

    Please try to restart the SBS server which suggested by Akampa, and then if there is the same issue.


    Regards,

    Alice Wang


    Please remember to mark the replies as answers if they help.
    If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com.

    Wednesday, February 8, 2017 8:37 AM