There is only one set of Speed Dials, but you can create your own. These speed dial numbers can't be 1 or 2 digits. If you just want to dial a number, do this:
User Setting -> User Defined Digit Maps -> UDDM 2
Label: sd
DigitMap: (<001:14805550001>|<002:14805550002>|003:14805550003)
Physical Interfaces -> Phone1/2 Port -> DigitMap
Add following AFTER the beginning parenthesis:
(Msd)|
Dial 001 and the OBi202 will call 14805550001