I use call center module ver 1.5.1 on elasix 1.52. I set up queues and agents and also freepbx in deviceanduser mode. However when I log in to a device(extension) as an agent number and password I get the messege that I'm logged in and than a music-on-hold and the agent screen is open. But if I hang-up - I'm logged out. How can I use that module this way? or am I doing something wrong?