The Cisco 1 port OC48c/STM-16c POS/RPR Shared Port Adapter is available on high-end Cisco routing platforms and offers the benefits of network scalability with lower initial costs and easy upgrades. The 1 port OC48c/STM-16c POS/RPR Shared Port Adapter continues the Cisco focus on investment protection along with consistent feature support, broad interface availability, and leading-edge technology.