Save significantly over new pricing on this refurbished Cisco NCS 520 (N520-20G4Z-A) — a next-generation Carrier Ethernet network demarcation device built for service providers. Backed by Reef Telecom's industry-leading 10-year warranty with free shipping on orders over $300.

Key Specifications

• Ports: 20x Gigabit Ethernet + 4x 10 Gigabit Ethernet (24 total ports)
• Layer Support: Layer 2 and Layer 3 capable
• Certification: MEF 3.0 Certified for Carrier Ethernet services
• Software: Cisco IOS XE Polaris
• Form Factor: 1RU rack-mountable, front-to-back airflow
• Power: AC power, commercial temperature rated, 110W max
• Provisioning: Zero-Touch Provisioning (ZTP) for rapid touchless deployment
• Licensing: Smart License and PAK license support

Carrier Ethernet Services

The Cisco NCS 520 supports MEF 3.0 service initiation including E-LINE, E-LAN, E-Tree, Access E-Line, and Transit E-Line with hierarchical Quality of Service (QoS), ingress traffic policing, and egress shaping to enforce SLAs.

Service Assurance & OAM

Built-in Operations, Administration, and Maintenance (OAM) capabilities include 802.1ag Connectivity Fault Management (CFM), Y.1731 performance monitoring, and Y.1564 service turn-up testing — reducing OpEx and eliminating costly truck rolls.

Why Buy Refurbished from Reef Telecom?

• 10-year warranty — the longest in the industry
• Free shipping on orders over $300
• Fully tested and inspected to OEM standards
• Significant savings vs. new list price
• Environmentally responsible — extend the equipment lifecycle

Ideal for service providers deploying Carrier Ethernet access, enterprise WAN demarcation, and managed Ethernet services at customer premises.

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.