The Cisco 8-port OC-12 POS Shared Port Adapters (SPA) is available on high-end Cisco Systems routing platforms offering the benefits of network scalability with lower initial costs and ease of upgrades. The Cisco SPA/SIP portfolio continues the Cisco focus on investment protection along with consistent feature support, broad interface availability. The Cisco SPA portfolio allows different interfaces to be deployed on the same interface processor.A key feature of these SPAs is the Multi-Rate operating mode support. The Cisco 8-port OC-12 POS SPA provides support for Small Form-Factor Pluggable (SFP) interfaces.