The Nortel NT8E01NB is a plug-in STM-16 Ring 1557nm AR TX transmitter card for the Nortel TN-16X system, a legacy SDH (Synchronous Digital Hierarchy) transmission platform used as backbone infrastructure for regional and national SDH networks, often deployed in conjunction with Nortel LH DWDM systems. The TN-16X operates at STM-16 (2,488 Mbps) and was used in point-to-point, repeater, and ring configurations, with the ring topology providing protection against network breaks via Multiplex Section Shared Protection Ring. This card is part of the NT8E01xx family of ring transmitters, each operating at a specific DWDM wavelength (e.g., the confirmed sibling NT8E01QW operates at 1557nm AR); the exact wavelength for the "NB" suffix specifically was not confirmed in publicly available sources, though it shares the same card family and platform. Nortel's optical transport business, including the TN-16X, was acquired by Ciena in 2010.
Key Features:
- Plug-in STM-16 ring transmitter card for the Nortel TN-16X SDH platform
- Part of the NT8E01xx STM-16 Ring TX card family (DWDM wavelength-specific)
- Used in Multiplex Section Shared Protection Ring configurations for network resilience
- Compatible with Nortel LH DWDM systems for combined transport deployments
Technical Specifications:
- Manufacturer Part Number: NT8E01NB
- Manufacturer: Nortel Networks
- Transmission Standard: STM-16 (SDH), approx. 2,488 Mbps line rate
- Platform Compatibility: Nortel TN-16X
- Product Family: NT8E01xx STM-16 Ring Transmitter series
- Function: Ring transmitter (TX), DWDM wavelength-specific
- Network Application: Multiplex Section Shared Protection Ring, Regenerator
- Form Factor: Plug-in printed board assembly for Nortel TN-16X ring shelf
- Note: Exact DWDM wavelength assigned to the "NB" suffix was not confirmed in a standalone public datasheet — recommend verifying against the physical card label or Nortel/Ciena legacy TN-16X documentation before publishing precise specs.
