[Asterisk-Users] Queues configuration

[Daniel Salama]

Hi,

I'm starting to play with Asterisk and the queues. Although I have 
found many references to the queues.conf in the wiki, I haven't been 
able to find answers to the following:

1) If I understand correctly, an agent can belong to more than one 
queue. Does that mean that as soon as the agent logs in, that agent can 
receive calls from either of the queues s/he belongs to?
2) When the agent is making outbound calls and I wish to identify the 
calls as belonging to one campaign or another, is there a way to 
identify that?
3) When callers call into the * box and the agents are busy, they will 
be put on the queue. Now, I wish to be able to tell the callers they 
are in position X in the queue. However, if after, say, 30 seconds no 
agent is available yet, I wish to give the caller the opportunity to 
listen to a IVR where s/he can make a decision whether to continue 
holding, be transfered to another agent group, or leave a message. Is 
this possible? Does anyone have any sample of how to do this?

Thanks,
Daniel