Queues must be configured according to the ways an agent can log in into them. These ways are standard login and agent callback login.
In Chapter 2, Basic PBX Configuration, we learned how to configure a queue. In this case, we will just show the way a queue can be configured in order to let agents log in by using the standard way. This way requires the agents to log into the queue, irrespective of the extension or physical device they use. The way all the parameters are configured varies from operation to operation; therefore, it is important to test the behavior of a queue before moving it to the production environment.