The configuration of call queue is set in a way that the agent should pick up and answer the call, because of the forced connection the called party and the caller will be connected automatically. This function is mostly used in call service centers.
Netropolitan Works builds secure VOIP in Thailand Asterisk systems and can do it in a way that makes sense for your business! http://www.NetropolitanWorks.com/VOIP-Thailand-lp.html