Lync - Configure federation : Skype for Business Online

If you wish to federate your Office 365 Lync with your on-premise version and wish to move people between the two configuration is required, this is that configuration:

Configure Federation:

Set-CSAccessEdgeConfiguration -AllowOutsideUsers 1 -AllowFederatedUsers 1 -EnablePartnerDiscovery 1 -UseDnsSrvRouting

New-CSHostingProvider -Identity SkypeforBusinessOnline -ProxyFqdn "" -Enable

Configure shared SIP address space:

Set-CsTenantFederationConfiguration -SharedSipAddressSpace $true

Once you have set this locally establish a connection with the Skype Online service using these commands:

Import-Module SkypeOnlineConnector
$cred = Get-Credential

$CSSession = New-CsOnlineSession -Credential $cred

Then you need to enable clobber:

Import-PSSession $CSSession -AllowClobber