I guess, if I break it into two pieces, certainly, the demand perspective, the demand backdrop around IP Optical improved significantly in the third quarter, as we expected and as we have guided, and it's a combination, obviously, of the momentum around the new products we're bringing to market. And in particular, as I mentioned, the bookings in the third quarter increase around IP routing in particular now being more than half the bookings in the quarter for that segment, was really good to see underpinned or underlined by this new deal with Airtel in India. I also, I think, mentioned the demand in Europe and the revenue in Europe, or Europe, Middle East Africa, kind of the whole EMEA region, was up pretty significantly in the quarter as well. Obviously, the Cloud and Edge business was down from previous quarter, down from the previous year. I've mentioned, in particular, we had a great quarter with Verizon in the second quarter, and a lot of the activity in the third quarter was deploying some of those products. So revenue was kind of naturally down there, offset by real strength with AT&T and as I mentioned, now kind of once again becoming a 10% plus customer in the quarter. So those are some of the dynamics I think that affected third quarter. As we look into the fourth quarter, again, as I think about the two segments in the IP Optical business, what we're projecting is really some increases in each of the geographies around the world. For the most part, every one of them, we're expecting some level of increase. We don't think Europe is as strong from an increase perspective is what we saw in the third quarter. And obviously, part of the reduction in guidance here was around being a little more cautious around what happens in Europe, in particular, in the fourth quarter. As I also mentioned, we have some really significant opportunities in the federal space. But just trying to predict the exact timing of when some of the deals go into procurement and when they get closed and as they flow to our partners, it's just been challenging to nail down exactly. So I've tried to be a little more cautious in what we see happen in the fourth quarter.