Cisco 16OC3X/POS-IR-LC

The Cisco 16OC3X/POS-IR-LC is a line card module designed for use in Cisco 7600 Series routers. It provides 16 ports of OC-3/STM-1 (Optical Carrier level 3/Synchronous Transport Module level 1) connectivity using the POS (Packet over SONET) interface. The "IR" in the name stands for intermediate reach, indicating that it supports transmission distances of up to 40 kilometers. The "LC" refers to the type of connector used, which is the LC (Lucent Connector) type. This line card is used for high-speed data transmission over optical networks, typically in service provider or large enterprise environments.