I need incoming callers to hear the phone ringing.  Then I want the receptionist to answer the ringing phone.  My customers are just getting dead space so they are all hanging up.  I want them to hear the ring, we answer the phone and then transfer to the appropriate extension.  If the receptionist does not answer the phone on the 4th ring then I would like the phone to go to voicemail.  I get everything figured out and then one day it just changes all by itself.