Sanyo 8300: Send directly to vmail

Hi:

If I'm missing this, feel free to tell me to rtfm again, but I
didn't see it when I tried the first time, and if I ever knew, I've
forgotten.

When a call comes in that I simply want to kill or send right
to mail, how do I do this with the Sanyo SCP8300?

Thanks in advance, DGI