Description:
The Nortel NTEU21AA is a legacy optical transport module used in Nortel SDH optical platforms (such as Optical Metro 4000 / 4200 series and legacy TN‑4XE systems). It functions as a long‑haul STM‑4 (approx. 622 Mbps) aggregate card optimized for 1550 nm optical transmission.
Key Features:
-
Manufacturer: Nortel Networks (legacy telecom OEM)
-
Part Number: NTEU21AA
-
Product Type: Long‑Haul STM‑4 Optical Aggregate Card
-
Application: SDH optical transport and long‑distance aggregation in metro/regional networks
-
Role: Aggregates STM‑4 optical traffic for backbone links
-
Family: Part of Nortel’s NTEUxx series of chassis modules
Technical Overview:
-
System Integration: Designed for installation in legacy Nortel SDH chassis such as Optical Metro 4000/4200 or TN‑4XE ADM platforms that support STM‑4/STM‑16 aggregation.
-
Function: Long‑haul aggregation of SDH STM‑4 optical traffic for legacy network transport; integrates with other aggregate and tributary cards in a modular shelf system.
-
Optical Interface:
• Wavelength: 1550 nm (optimized for long‑haul optical transmission)
• Optical Type: Single‑mode fiber support for long reach -
Data Rate: STM‑4 (~622 Mbps) aggregated payload handling
-
Long‑Haul Parameters: Designed for higher‑distance optical links using 1550 nm wavelength for improved fiber range and reduced loss relative to short‑haul cards.
-
Form Factor: Telecom rack/chassis card module, single card height suitable for standard ETSI racks
-
Compatibility: Works with legacy SDH optical transport systems (Optical Metro 4000/4200, TN‑4XE add/drop multiplexer architectures)
-
Lifecycle Status: Legacy / End‑of‑Life; these modules are no longer manufactured by the original OEM and are supported via third‑party refurbished parts distributors.
