Hi, i'm putting up a small contact center. I'd like customers to hear an introduction message (latest promos etc.) before attendants would answer the call.
I tried doing this by putting up an OGM playing a recorded message and then proposing either to hang up either to speak to an attendant.
I thought i could plug each attendant's phone line in the voice modem of their workstation, using a headset plugged in their sound card and using IVM. IVM would then notify by some way that the customer has chosen to speak to the attendant (ringing the phone's sound output) and the attendant could pick up the call.
What should i do? 
Thanks