Cisco Dynamic Packet Transport Spare 1024Mbit/s networking card

7200 OC-12c/STM-4 Dynamic Packet Transport Port Adapter The DPT port adapter provides the following features:
- Accommodates large-scale network topology
- Leverages fiber-optic capacity at OC-12c/STM-4
- Controls the rate at which new packets are inserted on the media
- Allows data to obtain fair-shared access to the OC-12c/STM-4 rings
- Implements protection mechanisms, including wrap and unwrap in the event of fiber or node failure
- Supports both single-mode (SM) and multimode (MM) fiber transmissions
- Supports access to the SONET DCC channel