The 132-S-900 exam evaluates Network Engineers on the architectural implementation of Avaya Aura Communication Manager, Session Manager, and System Manager within complex enterprise VoIP environments. Candidates must demonstrate proficiency in designing SIP trunking topologies, integrating H.323 endpoints, and configuring Quality of Service parameters across converged IP networks. The assessment mandates technical mastery of Avaya Aura Messaging, Session Border Controllers, and survivability strategies for distributed branch deployments. Furthermore, successful examinees verify expertise in bandwidth capacity planning, VLAN segmentation for voice traffic, and the structural requirements for multi-site media gateway integration to ensure carrier-grade voice reliability and optimized packet delivery within scalable IP infrastructures.