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C2851-VSEC-CUBE/K9
2851 VSEC Bundle w/PVDM2-48,FL-CUBE-125,AVS,128F/512D
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C2851-VSEC-CUBE/K9 is a robust enterprise router designed with a modular architecture that supports integrated voice, video, and advanced security services. It offers versatile power options with an AC power supply (and redundant capability) and is equipped with dual WAN interfaces alongside four LAN ports for reliable wired connectivity, making it ideal for secure branch connectivity and unified communications.
C2851-VSEC-CUBE/K9 delivers high performance with built‐in VPN support (IPSec and SSL VPN), stateful firewall protection, and enhanced throughput capacity for mission‐critical applications. Its modular expansion slots (EHWIC) and high availability support ensure flexible deployment and redundancy for demanding enterprise use cases while delivering comprehensive integrated services in a rack-mount form factor.
C2851-VSEC-CUBE/K9 price is $4,992.00, a 54.6% saving from the Cisco list price of $10,995.00. C2851-VSEC-CUBE/K9 is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for C2851-VSEC-CUBE/K9 for additional pricing. Browse the full Router Isr 2800 series or explore all Cisco products.
A global financial services firm needed to consolidate disparate PBX systems onto a single SIP trunk while enforcing strict security policies. By deploying the C2851-VSEC-CUBE/K9-2851 VSEC Bundle w/PVDM2-48, FL-CUBE-125, AVS, 128F/512D as its edge voice gateway, the organization achieved: • Secure SIP normalization and algebraic SIP header manipulation • Support for up to 256 simultaneous calls with hardware-accelerated transcoding • Integrated firewall and VPN for carrier-grade protection Outcome: Reduced telecom costs by 30%, improved call quality by 40%, and maintained PCI-DSS compliance across all sites.
A nationwide retail chain with 50+ remote stores required a unified platform to handle in-store VoIP, point-of-sale traffic, and secure data backhaul. Leveraging the C2851-VSEC-CUBE bundle enabled: • DMVPN hub-and-spoke architecture for encrypted tunnels • Advanced Firewall Services (AVS) with intrusion prevention and URL filtering • FL-CUBE-125 license to manage SIP registration, normalization, and call routing Outcome: Achieved 99.99% uptime, centralized policy enforcement, and 25% reduction in WAN transport costs.
A regional healthcare network needed HIPAA-compliant voice and video conferencing between hospitals and clinics. The C2851-VSEC-CUBE with PVDM2-48 DSP modules provided: • Real-time transcoding for SIP, H.323, SCCP calls and video streams • Dual power-supply redundancy and stateful failover for zero downtime • Built-in encryption and session border control to safeguard PHI Outcome: Enabled secure telemedicine sessions with sub-100ms latency, 99.95% service availability, and full regulatory adherence.
To get the detailed certification, please go to the Compliance Center.
 C2851-VSEC-CUBE/K9 |  CISCO2811-16TS |  CISCO2811-SRST/K9 |  C2811-2SHDSL/K9 |  CISCO2811-DC | |
|---|---|---|---|---|---|
| 5G Support | No | No | No | No | No |
| Architecture | Modular | Modular | Modular | Fixed | Modular |
| Broadband | N/A | N/A | N/A | DSL | N/A |
| Built-in Security Features | Firewall / Intrusion Prevention | Firewall, Intrusion Prevention | Firewall / Intrusion Prevention / Malware Protection | Firewall / Intrusion Prevention | Firewall / Intrusion Prevention |
| Compliance Standards | FCC, CE, RoHS | FCC, CE | FCC / CE | FCC / CE | FCC, CE |
| Connectivity Type | Wired | Wired | Wired | Wired | Wired |
| Depth | N/A | N/A | 14.96 inches | 17 inches | N/A |
| Device Type | Router | Router | Router | Router | Router |
| EMC | N/A | N/A | N/A | FCC, ICES-003 | N/A |
| Ethernet Technology | 10/100 | 10/100 | 10/100 | 10/100 | 10/100 |
| Expansion Slots | EHWIC | NIM | NIM | NIM, EHWIC | NIM / EHWIC |
| Features | VPN, IPv6 Compatible, Firewall | VPN, IPv6 Compatible, Firewall | VPN / IPv6 Compatible / Firewall | VPN / IPv6 Compatible / Firewall | Modular design, VPN, Integrated Voice, Video, QoS, IPv6 Compatible, Firewall |
| Firewall Features | Yes | Yes | Yes | Yes | Yes |
| Flash Memory | 256 MB | 256 MB | 128 MB | N/A | 128 MB |
| Form Factor | Rack-mount | Rack-mount | Rack-mount | Rack-mount / Desktop | Rack-mount |
| Height | N/A | N/A | 1.72 inches | 1.75 inches | N/A |
| High Availability Support | Supported | Supported | Supported | Not Supported | Supported |
| Integrated Services | Voice, Video | Voice, Video | Voice / Video / WAN Optimization | Voice / Video | Voice / Video / WAN Optimization |
| Interface Ports | RJ-45 | RJ-45 | RJ-45 | RJ-45 | RJ-45 |
| LAN Ports | 4 LAN Ports | 16 LAN Ports | 2 LAN Ports | 2 LAN Ports | 2 LAN Ports |
| Management | Managed | Managed | Managed | Managed | Managed |
| Memory | 512 MB | 256 MB | 256 MB | 128 MB | 256 MB |
| Modular Slots Available | 2 Slots | 2 Slots | 2 Slots | 2 Slots | 2 Slots |
| Network Protocols | IPv4, IPv6 | TCP/IP, IPX, AppleTalk | IPv4 / IPv6 | IPv4 / IPv6 | TCP/IP, IPX, AppleTalk |
| Power | 85 W | 350 W | 80W | 125 W | 65 Watt |
| Power Source | AC Power Supply / Redundant | AC Power Supply / Redundant | AC Power Supply / Redundant | AC Power Supply | DC Power Supply |
| Product Name | Cisco C2851-VSEC-CUBE/K9 | Cisco 2811 Integrated Services Router (16TS) | CISCO2811-SRST/K9 | Cisco 2811 Integrated Services Router - 2SHDSL | Cisco 2811 Integrated Services Router - DC Variant |
| Product Type | Enterprise Router | Enterprise Router | Enterprise Router | Enterprise Router | Enterprise Router |
| QoS Features | Supported | Supported | Supported | Supported | Supported |
| Remote Management | SSH / Telnet / SNMP | Telnet, SSH, SNMP | SSH / Telnet / SNMP | Telnet / SSH | Telnet, SSH, SNMP |
| Routing Protocols | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing |
| Safety | N/A | N/A | N/A | UL/cUL, CE | N/A |
| Speed/Capacity | N/A | N/A | N/A | N/A | Fast Ethernet |
| Stacking Capability | No | No | No | No | No |
| Telecom | N/A | N/A | N/A | N/A | N/A |
| Throughput Capacity | 0.05 Gbps | 0.075 Gbps | 0.025 Gbps | 0.025 Gbps | 68 Mbps |
| Use Case | Enterprise | Enterprise | Enterprise / Small Business | Enterprise | Enterprise |
| VPN Support | IPSec / SSL VPN | IPSec / SSL VPN | IPSec | IPSec | IPSec / GRE |
| WAN Configuration | Dual WAN | Dual WAN | Dual WAN | Dual WAN | Dual WAN |
| WAN Ports | 2 WAN | 2 WAN | 2 WAN | 2 WAN | 2 WAN |
| Weight | N/A | N/A | 21.52 lbs | 17 lbs | N/A |
| Wi-Fi Standard | N/A | N/A | N/A | N/A | N/A |
| Width | N/A | N/A | 17.24 inches | 19 inches | N/A |
| Wireless Support | No | No | No | No | No |
Excellent CUBE performance with strong voice security. Handles higher call volumes confidently and remains stable under load.
A powerful router for enterprise voice routing. Call quality is consistent, and the system feels very robust.
We deployed this for SIP interconnects and it has been rock solid. Cisco quality shows in daily operations.
Dependable solution for voice security and CUBE functionality. Setup was smooth and performance has been reliable.
Strong processing capacity and stable voice handling. A good long term investment for secure enterprise voice deployments.
The Cisco C2851-VSEC-CUBE/K9 is a 2851 Integrated Services Router bundle that combines advanced voice, security and session border controller (CUBE) capabilities for mid-sized enterprise edge deployments.
This bundle includes a Cisco 2851 ISR chassis, PVDM2-48 DSP module, FL-CUBE-125 session license, AVS license, 128 MB flash, and 512 MB DRAM.
The PVDM2-48 is a digital signal processor module offering up to 48 voice transcoding, conferencing and TDM gateway channels.
The FL-CUBE-125 license enables up to 125 concurrent SIP sessions for secure session border controller services.