I’ve found a few queue tools, but I’m only using a dual-core processor for 40 calls so I’d like to keep mashing php software to a minimum.
I’ve looked at most of these and they’re either too expensive or don’t have that specific feature:
http://www.voip-info.org/wiki/view/Asterisk+call+queues
Also,
Any developers willing to take a crack at it and release it as open source for us?