The planning phase for a hybrid deployment starts from a simple consideration: do we have an on-premises deployment of Lync Server? If the previously mentioned scenario is true, do we want to move users to the cloud or vice versa? Although the first situation is by far the most common, we have to also consider the case in which we have our first deployment in the cloud.
This step is all that is required for the scenario that starts from Lync Online.
We have to completely deploy our Lync on-premises.
Establish a remote PowerShell session with Office 365 (as we have seen in the Using Lync Online Remote PowerShell section).
Use the shared SIP address cmdlet
Set-CsTenantFederationConfiguration -SharedSipAddressSpace $True
to enable Office 365 to use a Shared Session Initiation Protocol (SIP) address space with our on-premises deployment. To verify this, we can use theGet-CsTenantFederationConfiguration
command. TheSharedSipAddressSpace...