Keep production telephony and data systems operational through prioritized parts replacement and on‑site service. Avaya PASS BASE PARTS NBD-SL793 (MPN GF4300793) delivers 24x7 Next Business Day parts and labor coverage with on‑site delivery and Partner Assurance support. Designed for enterprise environments where hardware uptime directly affects revenue and customer experience, this service reduces mean time to repair for covered components and simplifies vendor accountability for field teams. Use PASS BASE when you need predictable parts availability, documented response commitments, and an assured supply channel without investing in higher‑tier contract options. Documentation, service dispatch, and parts handling remain within Avaya’s maintenance workflow, preserving configuration integrity and minimizing change windows. This offering justifies premium cost versus commodity break/fix by compressing repair timelines and providing a single accountable manufacturer support path for Avaya hardware.