'NIM SLOT FORM FACTOR'}
Cisco NIM-4FXO Refurbished Module WhaleyComm
Cisco

Cisco NIM-4FXO 4-Port FXO Network Interface Module

MPN: NIM-4FXO
Select Condition
$25.00
Sold Out
Request Bulk Quote
Questions before purchasing?
+1 214 607-4800
Mon–Fri 8am–6pm CST · Enterprise sales team
🛡️
Lifetime
Warranty
📋
ISO 9001
Certified Testing
♻️
R2v3
Responsible Refurb
25+
Years
5K+
Customers
ISO
Certified
✓
Tested

Every WhaleyComm unit is professionally tested, reset to factory defaults, and certified by our in-house engineers — the same standard trusted by 5,000+ organisations across 25 years. Not a refurb marketplace. A certified lifecycle partner.

Tested to factory specification. Backed by 25 years of enterprise trust.

The Cisco NIM-4FXO (MPN: NIM-4FXO) is a 4-Port Foreign Exchange Office (FXO) Network Interface Module designed for Cisco 4000 Series Integrated Services Routers (ISR). This module enables seamless PSTN and legacy PBX connectivity, allowing enterprises to integrate traditional analog phone lines directly into their unified communications infrastructure. Whether you are bridging legacy telephony with modern VoIP systems or building a resilient hybrid voice network, the NIM-4FXO delivers reliable, carrier-grade performance.

Product Details

  • Manufacturer: Cisco
  • MPN: NIM-4FXO
  • Product Type: Module – Network Interface Module (NIM)
  • Ports: 4 x FXO Analog Voice Ports
  • Compatible Platforms: Cisco ISR 4000 Series (4321, 4331, 4351, 4431, 4451)
  • Interface: NIM Slot Form Factor
  • Condition: Professionally Refurbished

Refurbished Quality You Can Trust

This unit is professionally refurbished and tested to original Cisco factory specifications. Each module undergoes rigorous inspection, cleaning, and functional testing before shipment — ensuring performance that meets or exceeds OEM standards. Choosing refurbished means enterprise-grade reliability at a fraction of the cost of new hardware, backed by WhaleyComm's 25+ years of experience serving 5,000+ customers worldwide.

Key Features

  • 4 analog FXO ports for PSTN and legacy PBX connectivity
  • Supports voice and fax over IP (VoIP/FoIP)
  • Compatible with Cisco Unified Communications Manager (CUCM) and Cisco Unified CME
  • Hot-swap capable NIM form factor for flexible deployment
  • Compact, modular design for ISR 4000 Series chassis
Technical Specifications
{'Manufacturer Part Number'
'NIM-4FXO', 'Brand': 'Cisco', 'Product Type': 'Module – Network Interface Module (NIM)', 'Condition': 'Professionally Refurbished', 'Manufacturer': 'Cisco', 'MPN': 'NIM-4FXO', 'Ports': '4 x FXO Analog Voice Ports', 'Compatible Platforms': 'Cisco ISR 4000 Series (4321, 4331, 4351, 4431, 4451)', 'Interface': 'NIM Slot Form Factor'}
Ideal Use Cases
Platform Port Expansion
Interface modules expand port capacity and connectivity options of modular chassis, enabling additional interfaces without replacing the host platform.
Technology Migration
Enables existing platforms to support newer interface speeds as part of incremental upgrades, extending the investment lifecycle of the host chassis.
What's Included
✔ Cisco NIM-4FXO Refurbished Module (1x)
✔ WhaleyComm ISO 9001-certified inspection and testing certificate
✔ WhaleyComm Lifetime Warranty
Lifetime Warranty — No Time Limits. No Questions.
Every WhaleyComm unit ships with a Lifetime Warranty. If it fails under normal operating conditions at any point, we replace it. No time limits, no expiration, no hidden conditions. Backed by 25 years and 5,000+ satisfied customers.
🔌
Compatibility Details
Review supported optics, cables, software, management protocols, and environment-specific compatibility guidance.
✓

Platform Compatibility

  • Platform: Cisco ISR or ASR Series — verify chassis and slot compatibility for modular components
  • Software: Cisco IOS XE or IOS XR — verify supported software release
  • Management: Cisco DNA Center, Cisco vManage, Cisco Prime Infrastructure
  • Note: Advanced features may require additional licensing. Contact WhaleyComm at +1 214 607-4800.
📦
Shipping & Returns
Clear fulfilment, tracking, return, warranty, and support information for enterprise hardware orders.
📦
Shipping
Orders ship within 1-2 business days from our facility in Texas. Overnight and expedited shipping available at checkout.
↩
Returns
Contact our support team for any DOA or warranty issues. Every WhaleyComm unit is covered by a Lifetime Warranty — we make it right, fast.
📦
Contact
+1 214 607-4800 | Mon-Fri 8am-6pm CST
?
Frequently Asked Questions
Product-specific answers about compatibility, testing, warranty, fulfilment, and purchase confidence.
Refurbished means this Cisco NIM-4FXO was previously deployed and has since been professionally inspected, cleaned, tested, and verified to meet original factory specifications by WhaleyComm's in-house engineers. It performs identically to a new unit at a significantly lower cost.
Yes. Every WhaleyComm unit ships with a Lifetime Warranty — no time limits, no questions asked. If your Cisco NIM-4FXO fails under normal operating conditions at any point, we replace it at no cost.
Every unit WhaleyComm ships undergoes an ISO 9001-certified testing process: full power-on diagnostics, port-by-port functionality testing, firmware verification, factory reset, and final inspection. Backed by 25 years of experience and 5,000+ enterprise customers.
Cisco NIM-4FXO 4-Port FXO Network Interface Module
$25.00
Call Now