Abstract

Tolly Group Report #202130 (May 2002) validates Avaya’s P330 Stackable Switching System, focusing on the P332G-ML 12-port Gigabit model plus stacking, PoE, load-balancing and T1/ATM expansion modules. Zero-loss tests showed the P332G-ML forwarding 100% of theoretical line rate at Layer 2 and Layer 3 for 64-, 512- and 1,518-byte frames, equal to 24 Gbit/s aggregate full-duplex throughput. Stacking trials with three switches and Octaplane modules delivered 15.2 Gbit/s, or 95% of the theoretical 16 Gbit/s backplane capacity, confirming high-speed scale-out.

Switch Monitoring (SMON) left forwarding performance untouched; 64-byte Layer 2 traffic continued at 100% utilization within the zero-loss threshold while counters and port statistics were polled . Voice tests paired a G700 Gateway with P333T-PWR units and, even under 220% link oversubscription with QoS active, achieved a PESQ score of 4.13, confirming toll-quality IP telephony. Power over Ethernet was verified by cycling Avaya 4612 IP phones from P333T-PWR outputs without disruption.

Function tests proved the P333R-LB load balancer distributed HTTP traffic correctly and that X330 T1 and ATM modules passed bidirectional data at rated speeds, enabling WAN uplink flexibility. Overall, the P330 family delivers wire-speed switching, resilient stacking, accurate monitoring, PoE, high voice quality and versatile WAN/load-balancing options, making it a solid choice for converged enterprise networks that must combine data, voice and modular expansion without sacrificing performance.