The router accommodates up to eight Flexible PIC Concentrators (FPCs), which can each be configured with a variety of network media types, altogether providing up to 32 OC-12/STM-4, 32 OC-48/STM-16, or eight OC-192/STM-64 ports per system. The router height of 35 in. (89 cm) enables stacked installation of two M160 systems in a single floor-to-ceiling rack, for increased port density per unit of floor space.
The router's maximum aggregate throughput is 160 gigabits per second (Gbps) simplex or 80 Gbps full duplex. The router provides very high throughput for any combination of Physical Interface Cards (PICs) that does not exceed 3 Gbps on an FPC1 or 10 Gbps on an FPC2. A combination that exceeds these numbers is supported, but constitutes oversubscription.