Originally Posted by
velo-orange
Sugino made some Octalink cranks for a few years but they were never really sold in the US in great numbers.
I believe Cannondale sold some house-brand cranks with Octalink bottom brackets some years ago. Maybe these were just private labled by Suguino.
I know ISIS was developed as a patent-beater since Shimano initially wouldn't license the Octalink design. Maybe they relented later.
To the OP: Operator is correct that you aren't limited to Octalink. Your frame will accept any style bottom bracket from cup-and-cone and cartridge square taper to the latest external cup bottom bracket designs with their matching cranks.
I would advise avoiding any ISIS bb/crank setup. Many of these were poorly made and unreliable and good ones are hard to find.