Sycamore Networks

(SCMR)

was up 10.1% in preopen

Island

trading after it announced that

BellSouth

TheStreet Recommends

(BLS)

would use Sycamore's optical switches and transport platform in its new high-speed South Florida Internet network.

Network equipment companies began rising in Wednesday's after-hours session after

Applied Micro Circuits

(AMCC)

, which makes chips for fiber-optic networks, reported strong earnings.