ISR4451-X-V/K9 Cisco ISR 4451 UC Bundle, PVDM4-64 w/UC License

Cisco ISR4451-X-V/K9 - Overview

The Cisco ISR4451-X-V/K9 is a high-performance 2RU modular router from the Cisco 4450 Series, designed for large branch offices, regional hubs, and enterprise WAN edge deployments. Compared to the ISR4431, it delivers significantly higher throughput and expansion capacity. The V bundle ensures that voice and collaboration services are enabled from the start, making it a converged platform for WAN routing and unified communications.

🔧 Key Hardware Specifications

• Form Factor: 2RU rack-mountable router
• Performance:
  • 1 Gbps default throughput
  • Upgradeable to 2 Gbps or 4 Gbps with performance licenses
• Interfaces:
  • 4x RJ45/SFP combo Gigabit Ethernet WAN/LAN ports
  • 3x NIM (Network Interface Module) slots
  • 2x SM-X (Service Module) slots
  • 1x ISC (Internal Services Card) slot
• Memory/Storage:
  • 4 GB DRAM (upgradeable to 16 GB)
  • 8 GB flash (upgradeable to 32 GB)
• Software: Runs Cisco IOS XE
• Power: Dual redundant PSU options available

🎤 V Bundle Features

The Voice license package enables:

• Cisco Unified Communications Manager Express (CME): Embedded call control for branch PBX functionality
• Cisco Survivable Remote Site Telephony (SRST): Ensures voice continuity during WAN outages
• Voice Gateway Services: SIP, H.323, MGCP, plus analog/digital voice interface support (via NIMs)
• Integrated Conferencing and Messaging: Branch-level collaboration services
• Secure Voice: Encryption and secure signaling for compliance

🧩 Ideal Use Cases

• Large branch offices needing local call control and survivability
• Enterprises deploying hybrid UC solutions with centralized and branch-level voice
• Retail or distributed sites requiring integrated voice/video alongside WAN routing
• Organizations consolidating routing and UC into a single ISR platform