According to Dell'Oro Group, the Optical Transport Market (including DWDM - Long Haul, DWDM - Metro and SONET/SDH) declined 22 percent Q/Q with revenues of $4.8 billion in 1Q01. Sales of DWDM systems supporting 10 Gbps transmission rates were down considerably in the first quarter, while unit sales of SONET/SDH Multiplexers running at rates below 10 Gbps increased Q/Q.

Dell'Oro Group's Optical Transport Report tracks DWDM-Long Haul, DWDM-Metro, and SONET/SDH Multiplexers. The Optical Transport Report focuses on detailed quarterly analysis of market size, market share, port/unit shipments and average selling prices as it pertains to markets and vendors.

Market Leaders (based on revenue) -- Optical Transport:

Quarterly Total Market 1Q01 Growth: -22%

MFG Revenue ($B): $4.8

Rank/Vendor/Growth:

(1) Nortel: -52%

(2) Lucent: +29%

(3) Fujitsu: +8%

(4) Alcatel: +1%

(5) Marconi: +20%

(6) Ciena: +19%

About Dell'Oro Group:

Dell'Oro Group is a market research firm that specializes in providing data on the networking industry. For more information, visit www.delloro.com.