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Failed to join Skype for Business meeting RRS feed

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    Hi everyone,

    I need some help to troubleshoot the error when joining skype for business meeting.

    This is what i found out from the uccApiLog file.

    ms-client-diagnostics: 23; reason="Call failed to establish due to a media connectivity failure when one endpoint is internal and the other is remote";

    Can someone give me some hints? Thank you in advanced.

    Monday, March 13, 2017 1:03 AM

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    Deleted
    Monday, March 13, 2017 4:27 AM
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    Most probably an Edge configuration issue , how about calling between internal and external clients is that working

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

    Monday, March 13, 2017 5:56 AM
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    Meeting invite is from the same company A. User from company A was trying to join the meeting externally.

    if join from internal network, there is no issue.

    Persistent route is configured

    Network Address                Netmask                Gateway Address                                                Metric

    10.0.0.0                        255.0.0.0                  Gateway of of Internal Network Adapter                    1

    0.0.0.0                           0.0.0.0                     Gateway of of External Network Adapter               Default

    Monday, March 13, 2017 8:27 AM
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    What about P2P A/V calls?is that working?did you verified the ports oppened for edge servers?

    A/V edge to/From 443 and UDP3478

    Webconference To 443

    Edge internal Interface to the user segments and FE servers 443,UDP 3478

    Jayakumar K

    Monday, March 13, 2017 9:10 AM
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    Call works well

    We opened the following ports on our firewall

    Access edge: 80,53(TCP/UDP), 443, 5061,5169

    Web: 443

    A/V Edge: 50000-59999(TCP/UDP), 3478, 443

    Monday, March 13, 2017 9:35 AM
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    Can you also check from the Edge to Firewall or  in the external network , is there any packet analyzing softwares or traffic shapers or any networking  device which checks all the packets that traverse through that ? can you isolate them  if any 

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

    Monday, March 13, 2017 9:52 AM
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    Hi Tony,

    When you try to join Skype meeting, did you encounter any error messages? The issue appeared on the specific user or all users had this issue?

    As a supplement, please run the following command on FE server to check the port ranges used by Lync client: Get-CsConferencingConfiguration 

    Furthermore, you could also use Microsoft remote connectivity analyzer check if there are any error messages.
    https://testconnectivity.microsoft.com/

    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.

    • Proposed as answer by Alice-Wang Wednesday, March 15, 2017 8:25 AM
    Tuesday, March 14, 2017 2:38 AM