Is the High Speed (HSSI) T3/E3 CSU/DSU end of life?

Yes. The Extreme High Speed (HSSI) T3/E3 CSU/DSU has reached end of life. Vendor support ended on 2013-03-18.

When is the High Speed (HSSI) T3/E3 CSU/DSU end of sale date?

The Extreme High Speed (HSSI) T3/E3 CSU/DSU reached end of sale on 2007-03-20. The last date of vendor support is 2013-03-18.

When does Extreme support end for the High Speed (HSSI) T3/E3 CSU/DSU?

Extreme support for the High Speed (HSSI) T3/E3 CSU/DSU ended on 2013-03-18.

Home/Extreme/Cross-Platform/High Speed (HSSI) T3/E3 CSU/DSU

High Speed (HSSI) T3/E3 CSU/DSU

Name: High Speed (HSSI) T3/E3 CSU/DSU
Brand: Extreme
SKU: DM2111003
Availability: Discontinued

SKU DM2111003

Extreme

High Speed (HSSI) T3/E3 CSU/DSU has reached end of life. Extreme support ended 2013-03-18. Last available for order 2007-03-20.

High Speed (HSSI) T3/E3 CSU/DSU Lifecycle Overview

The Extreme High Speed (HSSI) T3/E3 CSU/DSU (DM2111003) is a product. This product has reached end of life as of 2013-03-18, meaning Extreme no longer provides technical support, software updates, or hardware replacement for this product. It was last available for purchase on 2007-03-20. Organizations still running the High Speed (HSSI) T3/E3 CSU/DSU should plan a migration .

Lifecycle Milestones

End of sale	2007-03-20
Last date of support	2013-03-18

Description

High Speed (HSSI) T3/E3 CSU/DSU

Source: Official Extreme notice · Last verified 2026-04-14