The BXM-622 is an ATM OC-12c/STM-4 interface card that uses custom application-specific integrated circuit (ASIC) technology, for the BPX 8600 series, to deliver the industry's most advanced and reliable ATM networking features. It supports PVCs, SVCs, S-PVCs and MPLS LVCs (label VC). It provides redundancy protection for card as well as line via SONET/SDH Automatic Protection Switching (APS). Its high-speed connectivity takes ATM to new levels of efficiency and scalability.