I came across a deployment in which the work number was the default option while selecting the “Call” option in the Lync client.
How to change it so that the default is always a Lync call? Pretty straightforward – All that is needed is a change to the client policy. Run the command below in the Lync Shell.
Set-CsClientPolicy “Policy Name” –EnableVOIPCallDefault $true
Once the change is made, the default option is always the Lync call.
If you have custom client policies defined, say a site level or user level one, make sure that the change is made on the policy that gets applied to the end user.