LG VX-6100

I've had my 6100 for about a month now. I used to have a 4500 but had to switch it out for reasons I won't get into. On the 4500, there was the option of hitting one of the side buttons twice to send the caller directly to voice mail (if you didn't want to answer it). Is there such an option on the 6100? I dislike that my phone rings about 6 times or so before it goes to voice mail. 😡

Thanks.