Wow, my problem is how to get SPD 1 to NOT be voicemail. Seems to me that it's 'hard coded' to voicemail with no option to do anthing else. For me it's been that way through 1.5, 2.1.1 and 2.1.2 - I haven't gone to 2.1.3 yet.
By the way, *86 is the number for voicemail, you could try assigning that to SPD 1.