Description
The Cisco NIM-4FXSP is a high-density 4-port Foreign Exchange Station (FXS) network interface module designed for Cisco 4000 Series Integrated Services Routers. It enables direct connectivity for analog devices such as phones, fax machines, and PBX systems while supporting enterprise voice and unified communications deployments.
This module includes an onboard digital signal processor (DSP), eliminating the need for separate voice DSP hardware and enabling advanced voice features such as echo cancellation, caller ID, fax relay, and multiple codec support. The NIM-4FXSP supports online insertion and removal (OIR), allowing upgrades or replacements without powering down the router.
Ideal for branch offices and distributed voice environments, the NIM-4FXSP delivers reliable analog voice integration with centralized management through Cisco IOS XE software.
| Specification | Details |
|---|---|
| Product SKU | NIM-4FXSP |
| Module Type | Voice Network Interface Module |
| Voice Ports | 4 × FXS (FXS / FXS-E / DID) |
| Supported Routers | Cisco 4000 Series ISR |
| Voice Processing | Integrated DSP |
| Supported Codecs | G.711, G.729a, G.726, G.723 |
| Fax Support | T.38 fax relay, pass-through |
| Echo Cancellation | Up to 128 ms |
| Voice Features | Caller ID, DTMF, VAD, CNG, RTCP |
| Installation | Online Insertion and Removal (OIR) |
| Management | Cisco IOS XE |
| Use Case | Analog voice, fax, PBX connectivity |
Payment & Security
Your payment information is processed securely, and we do not store credit card details or access your credit card information.
Return Policy (Short Summary)
We offer a 30-day return window for most unopened, factory-sealed items.
Returns must be authorized before shipping back and must include all original packaging and accessories. Opened or used items are not returnable unless defective.
Some products—such as custom orders, special-order items, audio gear, software, and LED video walls—are non-returnable. Non-defective returns may be subject to a 20–30% restocking fee, and customers are responsible for return shipping costs.
For damaged or incorrect items, please contact us immediately.
Building a Complete AV System?
This product is rarely deployed alone. It’s typically part of a fully integrated AV system. AVENDOR designs, integrates, and supports end-to-end environments—from single rooms to enterprise-wide deployments.
- System Design & Engineering
- Installation & Integration
- Programming & Ongoing Support
Trusted by enterprises, universities, and government organizations across the U.S.
A decade of delivery — trusted by 275+ clients across industries
