The Call Queues and Auto Attendant training has been updated to reflect the latest changes in the service: as announced yesterday Agent Opt In/Out feature has been rolled out to all customers for Cal...
Updated Feb 14, 2018
Version 2.0
Blog Post
Not sure if it is because we have a full deployment of Skype for Business Server, but I have been testing redirecting an unassigned number range (singe DID) to the SIP URI of the Call Queue and it appears to be working as expected. So far anyway.