Well--I finally figured it out. I had programmed 433 - the hunt group for the VM--to one of the programmable keys--instead of F64--the VM feature code. In order for answer machine emulation to take place--you've got to either press F64 or have it on a key. 433 won't work for that---although it appears to be the same thing--because it does go right to the person's VM box. Interesting. I'll remember that one.