The PXM-1 is a combination of ATM switching fabric, data processing, and ATM interface card. The PXM-1 module combines a shared-memory switching fabric with integrated trunking. The switching fabric provides 1.2 Gbps of non-blocking switching capacity, while the processor provides the control plane that delivers the industry's most advanced IP+ATM networking software, diagnostics, and performance monitoring.This product is a redundant PXM1-OC12 with IR bc bundle.