Users join lync meeting and get disconnected after 1 second

I have an issues where some users join a Lync meeting but kicked off after a second or less. I see this error in the traces.

I have no idea what is causing this to happen.

response  xmlns="urn:ietf:params:xml:ns:cccp"
                mscp="http://schemas.microsoft.com/rtc/2005/08/cccpextensions"
                ci="urn:ietf:params:xml:ns:conference-info"
                requestId="437979296"
                C3PVersion="1"
                from="sip:user@a.domain;gruu;opaque=app:conf:focus:id:Q3M30T0G"
                to="sip:anotheruser@a.domain"
                code="failure"
                reason="otherFailure">
    +  <addUser  reason="otherFailure">
</response>

January 23rd, 2015 7:20pm

First thin is to check the webservice for conferences. It could also be a Network/firewall problem if the required ports on the fontend not reachable.

Use this command to text conference

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January 25th, 2015 2:54pm

Hi,

Did the issue both happen internal and external the domain?

Please check if there is any error message on FE Server.

As the issue only happen for several users, please double check if there is any client/conference policy to deny these Lync users to join the Lync Meeting.

Best Regards,
Eason Huang

January 26th, 2015 11:22am

All users are internal. They also all have the same policies applied. Someone will set up a Lync meeting with a dozen or so users, most everyone can join but we sometimes have a random user who cannot join the meeting.

There are three Web Front end servers in the pool behind a hardware load balancer.

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January 26th, 2015 2:43pm

Hi,

From your description above, it can be the issue of the HLB. Please double check the HLB and then test again.

Best Regards,
Eason Huang

February 2nd, 2015 4:00am

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