The Cisco 2951 Integrated Services Router (ISR) delivers highly secure data, voice, video, and application services for small offices. Key features include:

- 3 integrated 10/100/1000 Ethernet ports with 1 port capable of RJ-45 or SFP connectivity
- 2 service module slots
- 4 Enhanced High-Speed WAN Interface Card slots
- 3 onboard digital signal processor (DSP) slots
- 1 internal service module slot for application services
- Fully integrated power distribution to modules supporting 802.3af Power over Ethernet (PoE) and - Cisco Enhanced PoE
- Security
- Onboard hardware acceleration for VPN encryption
- Secure collaborative communications with Group Encrypted Transport VPN, Dynamic Multipoint VPN, or Enhanced Easy VPN
- Integrated threat control using Cisco IOS Firewall, Cisco IOS Zone-Based Firewall, Cisco IOS IPS, and Cisco IOS Content Filtering
- Identity management using authentication, authorization, and accounting (AAA), and public key infrastructure
- Voice
- High-density packet voice DSP module, optimized for voice and video support
- Standards-certified VoiceXML browser services
- Cisco Unified Border Element capabilities
- Cisco Unity Express voicemail support.
- Support for Cisco Communications Manager Express and Survivable Remote Site Telephony

Specification

Product
Product id	299198
Brand	Cisco Systems
Partnr	C2951-VSEC/K9
EAN/UPC code	5501001876922
Ethernet LAN features
Ethernet LAN	Y
Full duplex	Y
Network
Networking standards	IEEE 802.3, IEEE 802.3u
Ethernet LAN data rates	10, 100, 1000 Mbit/s
Supported WAN type	2 x GE
Management features
Web-based management	Y
Quality of Service (QoS) support	Y
Ports & interfaces
Ethernet LAN (RJ-45) ports	3
USB ports quantity	2
DC-in jack	N
Expansion slots	4 x EHWIC\n2 X PVDM\n1 X ISM
Security
MAC address filtering	Y
Security algorithms	3DES, DES, WPA-AES
Firewall security	IOS
Technical details
Rack mounting	Y
Form factor	2U
Features
Flash memory	256 MB
Internal memory	512 MB
Design
Product colour	Multi
LED indicators	Y
Power
Power consumption (typical)	250 W
Power over Ethernet (PoE)	Y
Operational conditions
Operating temperature (T-T)	0 - 40 °C
Storage temperature (T-T)	-40 - 70 °C
Operating relative humidity (H-H)	5 - 85 procent
Storage relative humidity (H-H)	5 - 95 procent
Operating altitude	0 - 4000 m
Non-operating altitude	0 - 4570 m
Weight & dimensions
Weight	13200 g
Other features
Power requirements	AC 100 - 240V, 50/60Hz
Connectivity LEDs	Y
Mounting	Y
Size (imperial)	19 "
Ports quantity	3
Dimensions (WxDxH)	88.9 x 438.2 x 469.9 mm
Compliance industry standards	IEC 60950, EN60950-1, UL 60950-1
Connectivity technology	Wired