OC-48/STM-16 at 2.488 Gbps carries 48 OC-1 circuits over single-mode fiber with LC connectors, commonly used in long-haul SONET/SDH backbone networks and undersea cable landing stations.
| Pin | Name | Function | Type |
|---|---|---|---|
| TX | TX | OC-48 optical transmit | BUS |
| RX | RX | OC-48 optical receive | BUS |