| Specification | |
| Synchronous Support | Yes |
| Synchronous Maximum Speed (per Port) | 2.048 Mbps |
| Asynchronous Support | Yes |
| Asynchronous Maximum Speed (per Port) | 115.2 Kbps |
| Bisync Support | Yes |
| Serial Protocols | EIA-232, EIA-449, EIA-530, V.35, X.21 p> |
| Lead Manipulation | No |
| Network Clock Synchronization | No |
| Brand | Cisco |