Cisco NIM-4FXO 4-Port FXO Network Interface Module
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.
Cisco NIM-4FXO – 4-Port FXO Network Interface Module
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.
Why Choose WhaleyComm?
- ✅ Lifetime Warranty – No time limits. No questions asked. If your unit fails under normal operating conditions at any point, we replace it. Period.
- ✅ 25 Years of Enterprise Trust – Over two decades of experience and a proven track record with 5,000+ satisfied customers.
- ✅ Fast Shipping – Orders ship within 1–2 business days so your network stays on schedule.
- ✅ Hassle-Free Returns – Contact our support team for any DOA or warranty issues and we'll make it right.
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
Shipping & Returns
Shipping: Orders ship within 1–2 business days from our warehouse. Fast fulfillment so your project doesn't wait.
Returns: We stand behind every unit we ship. Contact our support team for any DOA or warranty-related issues and we will resolve it promptly.
Lifetime Warranty
Every WhaleyComm unit ships with a Lifetime Warranty — No Time Limits. No Questions. If it fails under normal operating conditions at any point, we replace it. 25 years. 5,000+ customers. That's our promise.
