| Description | Specifications |
| Physical dimensions | Occupies one line card slot on a Cisco 12000 Series Router |
| Shipping weight | 10kg |
| Operating temperature | 32 to 104°F (0 to 40°C) |
| Relative humidity | 10 to 90 percent, noncondensing |
| Storage temperature | –4 to 149°F (–20 to 65°C) |
| SIP Engine Processor | ||
| Product Number | Description | Engine Type |
| 12000-SIP-400 | 2.5G ISE SPA Interface Processor | Engine 3 (ISE) |
| 12000-SIP-600 | 10G Engine 5 SPA Interface Processor | Engine 5 |
| 12000-SIP-401 | 2.5G Engine 5 SPA Interface Processor | Engine 5 |
| 12000-SIP-501 | 5G Engine 5 SPA Interface Processor | Engine 5 |
| 12000-SIP-601 | 10G Engine 5 SPA Interface Processor | Engine 5 |