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Poor call quality with lync client and lync phone RRS feed

  • Question

  • Hi,

    Any idea to trace call quality issue with lync 2010? Some times some calls to PSTN call or external call can't hear the voice normally but it is happen randomly.

    They using AudioCode M1k for the audio gateway.

    Network Switch and AudioCode SBA , Workstation client GPO was did the QOS already.

    This site is using SBA for the PSTN incoming and outgoing call.

    Peer to peer call is normal.

    Thanks. 


    • Edited by JohnHK215 Tuesday, March 3, 2015 2:52 PM tt
    Tuesday, March 3, 2015 2:50 PM

Answers

  • Do you have the monitoring role installed? If so then you can check the log for the call that had the issue. The call log will show the two call legs that Lync has access to - Client <-> SBA and then SBA <-> Gateway.

    Review the network stats and ensure there's no jitter/packet loss, or anything else that is obvious. I usually also check the other stats (echo in, client CPU performance, etc.) to make sure the client device/computer is working as expected (eg when a coder is compiling while on a call their computer slows down which affects their call quality).

    If all these return normal then you need to reach out to whoever manages the gateway and see if they can pull some sort of quality stats for the affected calls.

    • Proposed as answer by Eason Huang Wednesday, March 4, 2015 9:07 AM
    • Marked as answer by JohnHK215 Wednesday, March 4, 2015 11:08 AM
    Tuesday, March 3, 2015 4:21 PM
  • Hi,

    The best way is to view the Monitoring Media Quality Diagnostic Reports to check the call quality, and diagnostic and troubleshooting information for failed calls.

    More details:

    https://technet.microsoft.com/en-us/library/gg615044(v=ocs.14).aspx

    If you haven’t deployed Monitoring Server, you can refer to the link below:

    https://technet.microsoft.com/en-us/library/gg398199(v=ocs.14).aspx

    Best Regards,
    Eason Huang


    Please remember to mark the replies as answers if they help, and unmark the answers if they provide no help. If you have feedback for TechNet Support, contact tnmff@microsoft.com.

    Eason Huang
    TechNet Community Support



    • Edited by Eason Huang Wednesday, March 4, 2015 9:30 AM
    • Marked as answer by JohnHK215 Wednesday, March 4, 2015 11:09 AM
    Wednesday, March 4, 2015 9:15 AM

All replies

  • Do you have the monitoring role installed? If so then you can check the log for the call that had the issue. The call log will show the two call legs that Lync has access to - Client <-> SBA and then SBA <-> Gateway.

    Review the network stats and ensure there's no jitter/packet loss, or anything else that is obvious. I usually also check the other stats (echo in, client CPU performance, etc.) to make sure the client device/computer is working as expected (eg when a coder is compiling while on a call their computer slows down which affects their call quality).

    If all these return normal then you need to reach out to whoever manages the gateway and see if they can pull some sort of quality stats for the affected calls.

    • Proposed as answer by Eason Huang Wednesday, March 4, 2015 9:07 AM
    • Marked as answer by JohnHK215 Wednesday, March 4, 2015 11:08 AM
    Tuesday, March 3, 2015 4:21 PM
  • Hi,

    The best way is to view the Monitoring Media Quality Diagnostic Reports to check the call quality, and diagnostic and troubleshooting information for failed calls.

    More details:

    https://technet.microsoft.com/en-us/library/gg615044(v=ocs.14).aspx

    If you haven’t deployed Monitoring Server, you can refer to the link below:

    https://technet.microsoft.com/en-us/library/gg398199(v=ocs.14).aspx

    Best Regards,
    Eason Huang


    Please remember to mark the replies as answers if they help, and unmark the answers if they provide no help. If you have feedback for TechNet Support, contact tnmff@microsoft.com.

    Eason Huang
    TechNet Community Support



    • Edited by Eason Huang Wednesday, March 4, 2015 9:30 AM
    • Marked as answer by JohnHK215 Wednesday, March 4, 2015 11:09 AM
    Wednesday, March 4, 2015 9:15 AM