Looking at the picture it almost (at little hard to tell) looks like six stitches of seed stitch on the outer edges, then a couple of ribs right before and after the main cable panel.
It's a VERY pretty scarf. My great-aunt loved
both cranberry yarn and cables. I may have to do this one in her honor. She's the one who taught me how to knit!
I'm going to take this pattern home tonight and give it a whirl. I'll write back tomorrow, but for now I'd follow the pattern as written, and I bet it will work out.
Happy Knitting :XX: :XX: