The Cisco 12000 Series represents the industry's most intelligent
portfolio of routing solutions that scale from 2.5Gbps/slot to
40G/slot capacity service-enabling carrier IP/MPLS core and edge
networks worldwide. This proven portfolio leverages state of the
art silicon and software technologies, delivering uncompromising
routing performance, unparalleled QoS capabilities, comprehensive
high availability support, ATM/Frame transport and an integrated
core and edge feature set.