All of the phone numbers you add in your BatchDialer account can be used for BOTH outbound and inbound calls. Inbound call queues won't work properly if you use a number that you haven't also been using to call people.
We recommend you use your numbers for your outbound and inbound calls as intended.
If you'd like to see how to add phone numbers to your account, click here and if you'd like to learn how to set up an inbound call queue, click here.