Maintain high-speed optical connectivity in Nortel environments with this AddOn 10GBASE-SR XFP transceiver. Built for the Avaya/Nortel AA1403005-E5 application, it supports 10 Gigabit Ethernet over multimode fiber and reaches up to 300 m at 850 nm through an LC interface. That makes it a practical fit for short- to mid-range data center and campus links where predictable optics matter more than generic compatibility claims. This module is hot-swappable, helping network teams replace or expand links without extended downtime. It is designed for the Nortel Ethernet Routing Switch 5600 Series and is TAA compliant, which matters for public sector and regulated procurement paths. AddOn programs, serializes, and tests each transceiver to align with OEM expectations, reducing the risk of mismatched optics in mixed-vendor environments. For organizations that need dependable replacement optics without paying for original-brand pricing, this transceiver offers a clear value proposition: verified compatibility, 10GBASE-SR throughput, and the operational confidence of a 3-year limited warranty.