The Cisco SPA-2XOC48POS/RPR is a 2-port OC48/STM16 POS/RPR Shared Port Adapter available on high-end Cisco routing platforms. 

• • The Cisco SPA-2XOC48POS/RPR offers the benefits of network scalability with lower initial costs and easy upgrades.
  • It continues the Cisco focus on investment protection, consistent feature support, broad interface availability, and leading-edge technology.
  • These SPAs allow different interfaces (POS, ATM, etc.) to be deployed on the same carrier card.
  • The Cisco SPA-2XOC48POS/RPR uses Small Form-Factor Pluggable (SFP) interfaces available in short-reach (2 km), intermediate-reach (15 km), and long-reach (80 km) optics.

• Applications:

  • The Cisco SPA-2XOC48POS/RPR can be used in multiple applications, including:
    • Access and aggregation
    • WAN uplinks
    • Internet peering

These SPAs feature both packet over SONET/SDH for mesh fiber networks and Resilient Packet Ring for ring fiber topologies. They comply with the IEEE 802.17 RPR standard and also support the Spatial Reuse Protocol (SRP) for compatibility with existing Dynamic Packet Transport/Resilient Packet Ring (DPT/RPR) networks.