Queue Agents

I am setting up a queue for 3 outside numbers. Those outside numbers are setup as Follow Me numbers associated with each of three extensions. When I setup the static queue agents as these 3 extensions, the calls are not delivered. I have made sure that Agent Restrictions is set to Call As Dialed.

However, I tried configuring the queue with the static agents being the outside numbers directly, bypassing the reference to the extension and follow me, which worked.

Additionally, I tested each extension by calling transferring to it from an IVR that was setup, which worked.

Why is the queue not work with the extensions as static queue agents?

Thanks for the help!