- Expansion module
- 2 ports
- for SPA Interface Processor 401
A key feature of these SPAs is the multirate operating mode support. This allows ports to be configured at OC-3 or OC-12 speeds. This gives the flexibility to configure some ports to run at OC-3 speeds, while the rest can run at OC-12 speeds. This requires different optics for different modes. The Cisco 2/4/8-Port OC-12 POS SPAs provide support for Small Form-Factor Pluggable (SFP) interfaces.