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Voice bundle performed smoothly with high call volumes. Stable and reliable.
ISR4451-X-V/K9
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Cisco ISR 4451 UC Bundle. PVDM4-64. UC Lic.CUBE25
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ISR4451-X-V/K9
- Description:
- Cisco ISR 4451 UC Bundle. PVDM4-64. UC Lic.CUBE25
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- Brand:
- Cisco
- GTIN:
- 662890673827
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- Warranty:
- 3
- List Price:
$31,583.00
- Price:
$6,382.0079.8% off
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ISR4451-X-V/K9 Overview
ISR4451-X-V/K9 is a high-performance, modular enterprise router designed to deliver integrated services with unmatched reliability and scalability. It features a robust architecture with flexible power options and redundant configurations that ensure continuous operation while providing expansive WAN and LAN connectivity options through modular interface slots and fixed ports.
ISR4451-X-V/K9 is engineered for demanding use cases with integrated voice, video, and WAN optimization services, advanced VPN capabilities, and industry-leading throughput for secure and efficient data transmission. Its high availability, sophisticated firewall features, and support for dynamic routing protocols make it ideal for enterprise branch connectivity, remote offices, and mission-critical environments requiring resilient performance and scalability.
ISR4451-X-V/K9 price is $6,382.00, a 79.8% saving from the Cisco list price of $31,583.00. ISR4451-X-V/K9 is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for ISR4451-X-V/K9 for additional pricing. Browse the full Router Isr 4000 series or explore all Cisco products.
ISR4451-X-V/K9 Specifications
- Product Type
- Enterprise Router
- VPN Support
- IPSec / SSL VPN / GRE / DMVPN / FlexVPN
- Power Source
- AC Power Supply / Redundant
- Routing Protocols
- OSPF / BGP / EIGRP / IS-IS / RIP / Static Routing / MPLS
- Broadband
- N/A
- Architecture
- Modular
- WAN Configuration
- Modular WAN
- WAN Ports
- Modular WAN
- LAN Ports
- Modular LAN
- Ethernet Technology
- 10/100/1000
- Wi-Fi Standard
- N/A
- Connectivity Type
- Ethernet
- Network Protocols
- IPv4, IPv6, MPLS
- Remote Management
- SSH / Telnet / SNMP
- Compliance Standards
- FCC / CE / UL
- Wireless Support
- No
- Speed/Capacity
- Gigabit
- Firewall Features
- Yes
- Features
- VPN / VoIP / IPv6 Compatible / Firewall / MPLS
- Use Case
- Enterprise
- Management
- Managed
- Form Factor
- Rack-mount
- Integrated Services
- Voice / Video / WAN Optimization
- High Availability Support
- Supported
- Safety
- N/A
- EMC
- N/A
- Telecom
- N/A
- Throughput Capacity
- 2 Gbps
- QoS Features
- Supported
- Built-in Security Features
- Firewall / Intrusion Prevention / Malware Protection
- Expansion Slots
- NIM
- Modular Slots Available
- 3+ Slots
- Stacking Capability
- No
- 5G Support
- No
- Memory
- 4 GB
- Flash Memory
- 2 GB
- Interface Ports
- RJ-45 / SFP
- Power
- 370W
- Device Type
- Router
- Product Name
- Cisco ISR4451-X-V/K9
- Height
- 1.75 inches
- Width
- 17.5 inches
- Depth
- 18 inches
- Weight
- 30 lbs
ISR4451-X-V/K9 Use Case
Branch Office SIP Trunking with Local Survivability
A national retail chain deploys Cisco ISR4451-X-V/K9 with PVDM4-64 and UC Lic.CUBE25 in 50 branch locations to terminate up to 25 concurrent SIP sessions and 64 transcoded voice channels. The router delivers local PSTN breakouts, secure SIP trunking, and automated failover in the event of WAN outages. Benefit: 99.99% voice uptime, 30% reduction in PSTN costs, and centralized management for all sites.
Phased Cloud Voice Migration for Distributed Enterprise
A global services firm uses Cisco ISR4451-X-V/K9 as a Session Border Controller (CUBE) with PVDM4-64 and UC Lic.CUBE25 to interconnect on-premises voice infrastructure with Cisco Webex Calling. The solution provides secure SIP signaling, media transcoding, and consistent QoS across 10 remote offices during a phased migration. Benefit: Zero-downtime cutover, simplified voice policy enforcement, and 25% faster provisioning for new sites.
High-Capacity Contact Center with Secure Voice and Video
A customer support center for a financial institution implements Cisco ISR4451-X-V/K9 with PVDM4-64 and UC Lic.CUBE25 to support up to 25 secured SIP trunks and 64 simultaneous voice/video transcoding sessions. The router enforces encryption, bandwidth prioritization, and real-time media optimization for 150 agents. Benefit: Enhanced call quality, end-to-end security compliance, and capacity to scale to 200 agents without forklift upgrades.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| ISR4451-X-V/K9 |  ISR4331-V/K9 |  ISR4451-X-SEC/K9 |  ISR4331-VSEC/K9 |  ISR4321-SEC/K9 | |
|---|---|---|---|---|---|
| 5G Support | No | No | No | No | No |
| Architecture | Modular | Modular | Modular | Modular | Fixed |
| Broadband | N/A | N/A | N/A | N/A | N/A |
| Built-in Security Features | Firewall / Intrusion Prevention / Malware Protection | Firewall / Intrusion Prevention / Malware Protection | Firewall, Intrusion Prevention, Malware Protection | Firewall / Intrusion Prevention / Malware Protection | Firewall, Intrusion Prevention, Malware Protection |
| Compliance Standards | FCC / CE / UL | CE / FCC / UL | FCC, CE, UL | FCC / CE / UL | FCC, CE |
| Connectivity Type | Ethernet | Wired | Wired | Wired | Wired |
| Depth | 18 inches | 13.9 inches | 14.1 in | 15.1 inches | N/A |
| Device Type | Router | Router | Router | Router | Router |
| EMC | N/A | N/A | N/A | N/A | N/A |
| Ethernet Technology | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| Expansion Slots | NIM | EHWIC / NIM / SM-X | NIM, EHWIC | NIM | NIM, EHWIC |
| Features | VPN / VoIP / IPv6 Compatible / Firewall / MPLS | VPN / Voice / Video / IPv6 Compatible / Firewall / MPLS | VPN, IPv6 Compatible, Firewall, Intrusion Prevention System | VPN / IPv6 Compatible / Firewall / MPLS | VPN, Firewall, IPv6 Compatible |
| Firewall Features | Yes | Yes | Yes | Yes | Yes |
| Flash Memory | 2 GB | 2 GB | 512 MB | 512 MB | 1 GB |
| Form Factor | Rack-mount | Rack-mount | Rack-mount | Rack-mount | Rack-mount |
| Height | 1.75 inches | 4.33 inches | 1.75 in | 1.75 inches | N/A |
| High Availability Support | Supported | Supported | Supported | Supported | Supported |
| Integrated Services | Voice / Video / WAN Optimization | Voice / Video / WAN Optimization | Voice, Video, WAN Optimization | Voice / Video / WAN Optimization | Voice, Video, WAN Optimization |
| Interface Ports | RJ-45 / SFP | RJ-45 / SFP | RJ-45, SFP | RJ-45 | RJ-45, SFP |
| LAN Ports | Modular LAN | 4 LAN Ports | 4 LAN Ports | Modular LAN | 2 LAN Ports |
| Management | Managed | Managed | Managed | Managed | Managed |
| Memory | 4 GB | 4 GB | 4 GB | 4 GB | 2 GB |
| Modular Slots Available | 3+ Slots | 3+ Slots | 2 Slots | 2 Slots | 1 Slot |
| Network Protocols | IPv4, IPv6, MPLS | IPv4 / IPv6 / MPLS | Ethernet, Fast Ethernet, Gigabit Ethernet | IPv4, IPv6 | IPv4, IPv6 |
| Power | 370W | 250 W | 350 W | 130 W | 75W |
| Power Source | AC Power Supply / Redundant | AC Power Supply / Redundant | AC Power Supply / Redundant | AC Power Supply / Redundant | AC Power Supply / DC Power Supply (Redundant) |
| Product Name | Cisco ISR4451-X-V/K9 | Cisco ISR 4331 Integrated Services Router | Cisco ISR4451-X-SEC/K9 | Cisco ISR 4331 Secure Integrated Services Router | Cisco ISR4321-SEC/K9 |
| Product Type | Enterprise Router | Enterprise Router | Enterprise Router | Enterprise Router | Enterprise Router |
| QoS Features | Supported | Supported | Supported | Supported | Supported |
| Remote Management | SSH / Telnet / SNMP | SSH / Telnet / SNMP | SSH, Telnet, SNMP | SSH, Telnet, SNMP | SSH, Telnet, SNMP |
| Routing Protocols | OSPF / BGP / EIGRP / IS-IS / RIP / Static Routing / MPLS | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / MPLS / IPv6 / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing |
| Safety | N/A | N/A | N/A | N/A | N/A |
| Speed/Capacity | Gigabit | Gigabit | Gigabit | Gigabit | Gigabit |
| Stacking Capability | No | Yes | No | No | No |
| Telecom | N/A | N/A | N/A | N/A | N/A |
| Throughput Capacity | 2 Gbps | 0.15 Gbps | 2 Gbps | 0.1 Gbps | 300 Mbps |
| Use Case | Enterprise | Enterprise / Branch | Enterprise | Enterprise | Enterprise, Small Business |
| VPN Support | IPSec / SSL VPN / GRE / DMVPN / FlexVPN | IPSec / SSL VPN / DMVPN / FlexVPN / N/A | IPSec / SSL VPN / DMVPN / N/A | IPSec / SSL VPN / DMVPN / FlexVPN | IPSec / SSL VPN / DMVPN / FlexVPN |
| WAN Configuration | Modular WAN | Dual WAN | Dual WAN | Dual WAN | Dual WAN |
| WAN Ports | Modular WAN | 2 WAN | 2 WAN | Modular WAN | 2 WAN Ports |
| Weight | 30 lbs | 19 lbs | 21 lbs | 11 lbs | N/A |
| Wi-Fi Standard | N/A | N/A | N/A | N/A | N/A |
| Width | 17.5 inches | 17.4 inches | 17.5 in | 17.5 inches | N/A |
| Wireless Support | No | No | No | No | No |
Reviews & Ratings
P
Patrick Sullivan
5
Excellent UC performance on a powerful ISR platform.
C
Charles Newman
5
Clear voice quality and consistent uptime. Cisco quality.
H
Henry Collins
5
Handles unified communications reliably. Easy to manage.
W
William Dawson
4
A dependable router for enterprise voice needs.
Questions & Answers
What is the Cisco ISR 4451 UC Bundle (SKU: ISR4451-X-V/K9)?
The Cisco ISR 4451 UC Bundle (SKU: ISR4451-X-V/K9) is a high-performance integrated services router with embedded Unified Communications features, including a PVDM4-64 DSP module and a CUBE25 session border controller license for secure voice and video services.
What key features are included in the Cisco ISR 4451 UC Bundle?
This bundle includes a quad-core 2.5 GHz CPU, up to 2 Gbps encrypted throughput, eight onboard Gigabit Ethernet ports, PVDM4-64 DSP module for media processing, UC Lic.CUBE25 for 25 SIP sessions, and support for advanced security and WAN modules.
How many voice channels does the PVDM4-64 module support?
The PVDM4-64 DSP module supports up to 64 simultaneous voice channels for transcoding, conferencing, silence suppression, and echo cancellation without additional licensing.
What capabilities does the UC Lic.CUBE25 provide?
The UC Lic.CUBE25 grants a built-in Cisco Unified Border Element enabling up to 25 concurrent SIP sessions for secure voice and video interconnectivity between enterprise and service provider networks.
How many concurrent calls and sessions can this bundle handle?
With PVDM4-64, you can process up to 64 transcoding channels and, via UC Lic.CUBE25, you can sustain up to 25 simultaneous SIP sessions, supporting mixed voice and video deployments seamlessly.
What security features are integrated in the Cisco ISR 4451?
The ISR 4451 includes a stateful firewall, IPsec VPN, intrusion prevention, URL filtering, Secure Boot, and Cisco Trust Anchor Technologies to protect both data and voice traffic.
Which power supply options are available for the ISR 4451 UC Bundle?
This router supports a dual redundant AC power supply by default, with optional DC power and Cisco Redundant Power System (RPS) compatibility for high availability.
Can I upgrade memory and storage on the ISR 4451?
Yes. The Cisco ISR 4451 supports up to 32 GB of DRAM and up to 240 GB of onboard flash storage or SSD for enhanced application hosting and data retention.
What WAN connectivity modules are compatible with the ISR 4451?
The router offers four onboard Gigabit Ethernet ports and two NIM slots that accept a variety of WAN modules, including T1/E1, T3/E3, serial, DSL, and Gigabit Ethernet uplinks.
How does the Cisco ISR 4451 support voice and video communications?
It supports SIP, H.323, SCCP protocols, QoS enforcement, media transcoding via PVDM4 DSP resources, and CUBE for session border control, ensuring high-quality voice and video.
What virtualization capabilities does the ISR 4451 UC Bundle offer?
The ISR 4451 supports Cisco NFV Infrastructure (NFVIS) and virtual network functions, enabling you to run virtualized UC, security, and WAN services on a single platform.
Is the Cisco ISR 4451 UC Bundle suitable for small to medium enterprises?
Yes. Its combination of integrated UC features, robust security, and high throughput makes it ideal for branch offices and mid-sized enterprise deployments.
What are the physical dimensions and weight of the ISR 4451?
The Cisco ISR 4451 is a 4-rack-unit (4RU) chassis measuring approximately 17.5″ × 16.2″ × 6.8″ and weighing around 19.5 lbs.
How do I install and configure the PVDM4-64 module?
Power off the router, insert the PVDM4-64 into an approved DSP slot, power on, then use the Cisco IOS commands “voice dsp farm” and “voice service voip” to allocate channels and configure transcoding.
What warranty and support options are available?
Cisco offers a standard one-year limited hardware warranty with this bundle, and you can upgrade to Cisco Smart Net Total Care for 24/7 technical support, advanced hardware replacement, and OS updates.
How can I purchase or upgrade the Cisco ISR 4451 UC Bundle?
Contact your authorized Cisco reseller or visit Cisco’s online store. Provide SKU ISR4451-X-V/K9 to order new installations or licensing upgrades for existing ISR 4451 platforms.