Cisco ISR4331-V/K9 — Unified Communications Voice Bundle Router

Save up to 80% over new with this professionally refurbished Cisco ISR 4331 Voice Bundle router, backed by Reef Telecom's industry-leading 10-year warranty. The ISR4331-V/K9 delivers enterprise-grade VoIP and WAN services for small to mid-size branch offices — ideal for CME, SRST, and CUBE deployments.

Key Specifications

• Part Number: ISR4331-V/K9
• Throughput: 100 Mbps – 300 Mbps aggregate (pay-as-you-grow licensing)
• WAN/LAN Ports: 3 onboard Gigabit Ethernet (2 RJ-45 + 1 GE/SFP combo)
• SFP Ports: 2
• Expansion: 2 NIM slots, 1 ISC slot (PVDM4-32 included), 1 SM-X slot
• Memory: 4 GB DDR3 ECC DRAM / 4 GB Flash (expandable to 16 GB each)
• Voice Bundle Includes: PVDM4-32 DSP, IP Base + UC License (CME, SRST, CUBE)
• Power: Internal AC (100–240V auto-ranging), up to 250W; PoE option up to 530W
• Form Factor: 1U rack-mountable, wall-mountable
• OS: Cisco IOS XE with multi-core CPU architecture

Advanced Capabilities

• Cisco SD-WAN / IWAN ready for intelligent path selection
• IPsec, SSL VPN, and FlexVPN encryption support
• Application Visibility and Control (AVC) with NetFlow/IPFIX
• VPN, VLAN, QoS, OSPF, BGP, EIGRP routing protocols
• SM-X slot supports UCS-E server blade for virtualized branch services

Why Buy from Reef Telecom?

• ✅ 10-Year Warranty — the longest in the industry
• ✅ Free Shipping on orders over $300
• ✅ Fully tested and inspected refurbished equipment
• ✅ Environmentally responsible IT lifecycle management

The Cisco ISR4331-V/K9 is the ideal branch router for enterprises deploying unified communications, VoIP, and secure WAN connectivity. Compatible with Cisco NIM, SM-X, and PVDM4 modules for maximum flexibility.

Free ground shipping on orders over $300. Same-day shipping on orders placed before 4PM EST.

All products include our industry-leading 10 Year Warranty backed by Reef Telecom.