| 1 - 2U height, Full front access (ETSI) Shelf |
| 2 - Dual controller, dual DC power with load sharing |
| 3 - 1 for 1 protection, Y-BOX |
| 4 - 1 for 1 protection, E1, T1, FOM |
| 5 - PDH ring protection, FOM, Mini QE1 |
| 6 - Console, Telnet, SNMP, and Inband management support |