(Updated - June 5, 2014 7:04 AM EDT)

Ciena Corp. (NYSE: CIEN) reported Q2 EPS of $0.17, $0.04 better than the analyst estimate of $0.13. Revenue for the quarter came in at $560.1 million versus the consensus estimate of $559.18 million.

Additional Performance Metrics for Fiscal Second Quarter 2014

• Non-U.S. customers contributed 42% of total revenue
• One customer accounted for greater than 10% of revenue and represented 21.5% of total revenue
• Cash and investments totaled $430.2 million
• Cash flow from operations totaled $2.0 million
• Average days' sales outstanding (DSOs) were 83
• Accounts receivable balance was $515.0 million
• Inventories totaled $294.0 million, including:
  • Raw materials: $56.7 million
  • Work in process: $7.9 million
  • Finished goods: $181.0 million
  • Deferred cost of sales: $95.9 million
  • Reserve for excess and obsolescence: $(47.5) million
• Product inventory turns were 3.5
• Headcount totaled 4,998

The company sees Q3 revs of $585 to $615 million, while the Street consensus is at $583.3 million. Sees adjusted (non-GAAP) gross margin in the low to mid 40s percent range.

For earnings history and earnings-related data on Ciena Corp. (CIEN) click here.