ISR4351-VSEC/K9 Cisco ISR 4351 VSEC Bundle, PVDM4-64 w/UC, SEC Lic, CUBE-25

Cisco ISR4351-VSEC/K9 - Overview

The Cisco ISR4351-VSEC/K9 is a 3RU modular router designed for medium to large branch offices or regional aggregation sites. Compared to the ISR4331, it delivers higher throughput and more expansion capacity. The VSEC bundle combines Voice, Security, and WAN services into a single converged platform, enabling secure routing, collaboration, and unified communications from the start.

🔧 Key Hardware Specifications

• Form Factor: 3RU rack-mountable router
• Performance:
  • 200 Mbps default throughput
  • Upgradeable to 400 Mbps or 1 Gbps with performance licenses
• Interfaces:
  • 3x RJ45/SFP combo Gigabit Ethernet WAN/LAN ports
  • 2x 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)
  • 4 GB flash (upgradeable to 16 GB)
• Software: Runs Cisco IOS XE
• Power: Dual redundant PSU options available

🎤 VSEC Bundle Features

The Voice + Security 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
• Advanced Security Services: VPN, firewall, and encryption features included with the SEC license

🧩 Ideal Use Cases

• 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, security, and UC into a single ISR platform