| Height (inches) | 19 |
| Width (inches) | 17 |
| Depth (inches) | 5 |
| Weight (Pounds - lbs) | 40 |
| AC input voltage | 100 to 240 VAC autoranging |
| Relative humidity | 5 to 95% |
| Airflow | Back and sides to front |
| Optional airflow kit (includes filter) | Front to back and sides |
| Rack height | 3RU |
| Maximum endpoint PoE power capacity with PoE boost (watts) | 1040 |
| Serial auxiliary port (up to 115.2 kbps) | 1 |
| Serial console port (up to 115.2 kbps) | 1 |
| USB console port (Type B) (up to 115.2 kbps) | 1 |
| External USB 2.0 slots (Type A) | 2 |
| Memory DDR2 ECC DRAM: Default | 1 GB |
| ISM slots | 1 |
| Doublewide EHWIC slots | 2 |
| EHWIC slots | 2 |
| Cisco Unified Communications Manager Express Sessions** | 250 |
| Data Link Protocol | Ethernet, Fast Ethernet, Gigabit Ethernet |
| Capacity | Cisco Unified Communications Manager Express sessions : 250 Cisco Unified SRST sessions : 730 |
| Network / Transport Protocol | IPSec, PPPoE, L2TPv3 |
| Routing Protocol | OSPF, IS-IS, BGP, EIGRP, DVMRP, PIM-SM, IGMPv3, GRE, PIM-SSM, static IPv4 routing, static IPv6 routing, policy-basedrouting (PBR) |
| Remote Management Protocol | SNMP, RMON |
| Encryption Algorithm | SSL |
| Compliant Standards | IEEE 802.3, IEEE 802.1Q, IEEE 802.1ah, IEEE 802.1ag |
| IOS Software Included | Cisco IOS Security |