Keep critical access and aggregation links online with a TAA-compliant 1000BASE-BX SFP transceiver engineered for Avaya/Nortel environments. This AddOn module supports 1 Gb Ethernet over single-mode fiber, making it a practical fit for long-reach campus, building-to-building, and carrier handoff deployments where optical consistency matters. For infrastructure teams, the value is in reducing uncertainty at install time. The module is positioned as a compatible replacement for AA1419076-E6, helping simplify sourcing when OEM availability is constrained or when approved third-party optics are preferred for cost control. LC connectivity keeps integration straightforward in standard SFP ports, while the BX design supports bidirectional transmission on a single strand of fiber. TAA compliance makes it suitable for public sector and regulated procurement paths that require sourcing discipline. AddOn’s compatibility focus helps teams standardize spares without changing the network design or introducing unnecessary complexity. When you need a replacement optic that fits the existing architecture and keeps the link budget intact, this module is built for that job.