T320 FPC Components

Each T320 FPC has the following components:

• FPC card carrier
• One Packet Forwarding Engine, which has Layer 2/Layer 3 Packet Processing ASICs, Switch Interface ASICs, T-series Internet Processor ASICs, and a memory subsystem (MMB), which includes the Queuing and Memory Interface ASICs
• Processor subsystem (PMB), which has a 300-MHz CPU, a system controller, 256 MB of SDRAM, and two Fast Ethernet interfaces
• FPC offline button, which is on the craft interface above the FPC
• On Type 1 FPCs, two PIC offline buttons, which are above the PIC slots on the FPC (see Figure 19)