If the user want to test the on-premise and enable enterprise voice with Exchange UM online.
How to minimize the effort to Lync online user? Dir Sync and ADFS server is running for Office 365.
If I point the Lync discover and sip.domain.com srv record to lync on-premise , there have down time on Lync online user?
They want to separate the Lync on-premise with lync online and no impact to Lync online users with parallel run on lync on-promise.
I have to test the edge server is running normal before point to DNS back to on-primise server?
i can't find many information about this hybrid mode reference.
Thanks.


