United States
Name:
NIM-4FXS
- Description:
- Cisco 4-Port Network Interface Module - FXS. FXS-E and DID, for ISR4451-X
- Rating:
-
(0)
Added to cart 43 times recently
- Availability:
-
In stock - Ready to Ship
- Brand:
- Cisco
- Condition:
- GTIN:
- 582723344703
- Warranty:
-
3 - List Price:
-
- Price:
-
Quantity:
1
Business price:
Enroll your business for free
3 Year Extended Warranty
Same-day Shipping
14-Day Money Back Guarantee
Need Additional Discount on Product?
Request a quote below - Get Exclusive Pricing and Support.
Exclusive Bulk Discounts tailored to your order size
Priority Processing with a dedicated account manager
Fast Response: Get your custom quote within 5-10 minutes during business hours (Mon-Fri, 6:00 AM – 6:00 PM PST)
Holiday Bonus: Submissions on holidays receive priority handling the next business day
Shipping:
Payment:
Shipping as per your need
Same-day Shipping
Express Delivery Across the USA
Need it fast? Choose Express Shipping and receive your order within 1–3 business days.
Free Ground Shipping Available
Standard ground delivery across the U.S. takes 2–6 days, depending on your location — no extra charge.
International Shipments Made Simple
For all international orders, we ship via your UPS, FedEx, or DHL account — or to your U.S.-based freight forwarder.
Delivery Timelines
Under 100 KG? Ships Express.
Smaller shipments go via DHL or FedEx Express — delivered worldwide in approximately 3 business days.
Over 100 KG? Ships via Freight.
Larger orders are dispatched through freight forwarding partners. Delivery takes 7–10 business days, globally.
Always Delivered to Your Door
Every shipment is delivered directly to your address — regardless of country or carrier.
Our best-in-class warranties
3-Year Extended Warranty
Extended protection, enterprise-grade.
All enterprise hardware is backed by a 3-year warranty — triple the industry standard — covering defects under normal use.
Professional repairs & replacements.
If a hardware issue is confirmed, we’ll repair or replace the unit. Replacement parts carry either original or 3-month coverage.
RMA process, simplified.
Once an RMA is approved, return the defective unit within 10 days. We handle the rest — no service gaps.
Service Boundaries & Exclusions
What’s covered — and what’s best avoided.
Your warranty covers defects under normal use. For continued protection, avoid accidental damage, unauthorized repairs, third-party parts, or extreme environments.
Know your location’s service type.
In some regions, return-to-factory or remote service may apply. On-site service depends on infrastructure availability.
Minimal documentation required.
To initiate service, just submit the invoice and warranty card — no red tape, no waiting.
14-Day Money Back Guarantee
Free 14-Day Returns
Tested it, but it’s not a fit?
Return any product within 14 days of delivery if it doesn’t meet your technical or operational needs.
Initiate returns with ease.
Our RMA process is streamlined — just raise a request, follow the packaging guidelines, and we’ll handle the rest.
Refund or restock, your call.
Changed your mind? Get a refund (restocking fees may apply) or swap with another product.
30-Day Hardware Replacement
Covered for any early faults.
All equipment includes a 30-day replacement warranty. If something goes wrong, we’ll repair or swap it — fast.
Replacements shipped in 10 days or less.
Once your return is inspected and approved, we dispatch the replacement promptly to keep your operations moving.
RMA protocol keeps it smooth.
Just ensure all accessories and original packaging are intact — we’ll take care of the technical validation.
NIM-4FXS
Cisco 4-Port Network Interface Module - FXS. FXS-E...
$1,150.00
$417.00
42 in Global Warehouse
$417.00
64% off
TRUSTED, TRIED, PROVEN
NIM-4FXS Overview
NIM-4FXS is a high-performance telephony interface module designed to integrate seamlessly with unified communications systems by delivering four reliable FXS ports for connecting standard analog telephones. Built as a modular Network Interface Module (NIM), it is engineered to support analog voice communications over traditional FXS pathways while ensuring compatibility with leading routers, switches, and unified communications platforms.
The NIM-4FXS module supports essential VoIP protocols such as SIP and H.323, making it ideal for environments that require smooth migration from legacy telephony systems to modern IP-based communications. Its compact form factor and straightforward installation process allow network operators to efficiently expand their voice service capabilities and upgrade existing infrastructures without compromising reliability or performance.
What is the price of NIM-4FXS?
Lowest price of NIM-4FXS is $ 417.00. Shop now! Get further exclusive discounts with bulk quotation on NIM-4FXS
Explore more options from Network Modules And Cards or explore other Cisco products.
NIM-4FXS Specifications
| Product Type | Network Module |
| Module Type | FXS Telephony Module |
| Data Rate | N/A |
| Connector Type | FXS |
| Supported Protocols | SIP / H.323 |
| Form Factor | Modular (NIM) |
| Operating Temperature | 0 to 70°C |
| Storage Temperature | -40 to 85°C |
| Input Voltage | 12V |
| Compatibility | Cisco / Avaya |
| Max Speed | N/A |
| Supported Features | Caller ID / Hook Flash / Auto-Ringing |
| Power Consumption | 8W |
| Interface Ports | FXS |
| Expansion Slots | NIM |
| Product Name | NIM-4FXS |
| Height | 1.5 inches |
| Width | 5.0 inches |
| Depth | 7.0 inches |
| Weight | 1.2 lbs |
NIM-4FXS Use Case
Branch Office Analog Phone Integration with Unified VoIP
In a large enterprise rolling out VoIP across 50+ branch offices, the NIM-4FXS-Cisco 4-Port Network Interface Module - FXS on the ISR4451-X enables direct connection of existing analog phones and overhead paging systems. By preserving legacy handsets and leveraging Cisco Unified Communications Manager, IT teams avoid costly handset replacements and accelerate migration schedules. Benefit: Achieve seamless analog-to-VoIP convergence with 30% lower deployment costs and centralized management.
PSTN Failover and Business Continuity for Remote Sites
A regional bank equips 120 remote kiosks with ISR4451-X routers fitted with the NIM-4FXS-Cisco 4-Port Network Interface Module - FXS to provide local PSTN fallback trunks. During WAN outages or SIP provider interruptions, inbound/outbound calls automatically reroute over analog lines via FXS ports. Benefit: Maintain 99.95% voice uptime SLA, protect critical customer service operations, and ensure uninterrupted transaction flows.
Retail POS and Fax Machine Connectivity with Direct Inward Dialing
A multisite retail chain integrates point-of-sale terminals, credit-card readers, and inbound fax machines into their new ISR4451-X network by deploying the NIM-4FXS-Cisco 4-Port Network Interface Module - FXS with DID support. Each analog device receives a unique direct extension from the head office PBX, streamlining order processing and compliance with PCI DSS regulations. Benefit: Optimize retail workflows, reduce reconciliation errors by 40%, and enhance customer checkout experiences.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
|
|
|
|
|
|
|
|---|---|---|---|---|---|
| Compatibility | Cisco / Avaya | Cisco Routers | Cisco, Juniper, Arista, Dell, HP | Cisco / Juniper / Arista / Dell / HP | Cisco, Juniper, Arista, Dell, HP |
| Connector Type | FXS | RJ-48 | RJ-45 | SFP+ | SFP+ |
| Data Rate | N/A | 1.544 Mbps (T1) / 2.048 Mbps (E1) | 1Gbps | 1Gbps / 10Gbps | 10Gbps |
| Depth | 7.0 inches | N/A | 4.4 inches | N/A | N/A |
| Expansion Slots | NIM | NIM | N/A | PCIe | NIM |
| Form Factor | Modular (NIM) | Modular | PCIe | PCIe | PCIe |
| Height | 1.5 inches | N/A | 0.5 inches | N/A | N/A |
| Input Voltage | 12V | 3.3V | 3.3V | 3.3V | 3.3V |
| Interface Ports | FXS | T1/E1 | Ethernet | Ethernet / SFP+ | 4 x SFP+ |
| Max Speed | N/A | 2.048 Mbps | 1Gbps | 10Gbps | 10Gbps |
| Module Type | FXS Telephony Module | T1/E1 Interface Card | Ethernet | Ethernet | Ethernet |
| Operating Temperature | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C |
| Power Consumption | 8W | 5W | 2.5W | 8W | 15W |
| Product Name | NIM-4FXS | NIM-4MFT-T1/E1= | SM-X-6X1G Ethernet Module | SM-X-4X1G-1X10G | NIM-4FXSP |
| Product Type | Network Module | Network Interface Module | Network Module / Network Card | Network Module / Network Card | Network Module |
| Storage Temperature | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C |
| Supported Features | Caller ID / Hook Flash / Auto-Ringing | Plug-and-play installation, Redundant design | Auto-negotiation, Wake-on-LAN, Jumbo Frames, QoS | Auto-negotiation / Jumbo Frames / QoS | Auto-negotiation, Wake-on-LAN, Jumbo Frames, QoS |
| Supported Protocols | SIP / H.323 | T1/E1 Framing and Signaling | TCP/IP | TCP/IP | TCP/IP |
| Weight | 1.2 lbs | N/A | 0.8 lbs | N/A | N/A |
| Width | 5.0 inches | N/A | 3.4 inches | N/A | N/A |
Showing - of 0 Results
Questions & Answers
Q
What is Cisco NIM-4FXS (SKU: NIM-4FXS) for the ISR4451-X?
A
The Cisco NIM-4FXS is a 4-port analog FXS Network Interface Module designed for the ISR4451-X, providing voice connectivity for analog phones, fax machines, and telephony applications.
Q
Which key features does the Cisco NIM-4FXS offer?
A
The NIM-4FXS supports four FXS ports, optional FXS-E signaling, Direct Inward Dialing (DID), industry-standard voice codecs, echo cancellation, and integrated DSP resources for high-quality voice services.
Q
Which Cisco routers are compatible with the NIM-4FXS module?
A
The NIM-4FXS is officially supported on the Cisco ISR4451-X platform and selected ISR4000 Series routers running IOS XE 16.6.1 or later.
Q
How many analog ports does the NIM-4FXS provide?
A
The module provides four independent FXS ports, each delivering POTS voice connectivity and signaling for analog devices.
Q
Does the NIM-4FXS support Direct Inward Dialing (DID)?
A
Yes, the NIM-4FXS supports DID signaling, enabling direct extension dialing from the PSTN to individual analog endpoints.
Q
How do I install the NIM-4FXS in an ISR4451-X router?
A
Power down the ISR4451-X, remove the blank NIM slot cover, align and insert the NIM-4FXS module, secure the captive screws, then power up the router.
Q
Is the NIM-4FXS hot-swappable on the ISR4451-X?
A
No, the NIM-4FXS requires the ISR4451-X to be powered down before installation or removal to ensure module integrity and avoid service disruption.
Q
What are the power requirements for the NIM-4FXS?
A
The NIM-4FXS consumes approximately 5W of router power when fully loaded and is supported by the ISR4451-X internal power supply.
Q
Which voice codecs are supported by the NIM-4FXS?
A
The NIM-4FXS supports G.711 μ-law/A-law, G.729, G.723.1, G.726, and low-bit-rate codecs for interoperable analog-to-IP voice conversion.
Q
Can I connect analog phones and fax machines to the NIM-4FXS?
A
Yes, the four FXS ports allow direct connection of standard analog telephones, fax machines, and credit card terminals without additional adapters.
Q
How do I configure dial peers for the NIM-4FXS in Cisco IOS XE?
A
Use voice-port configuration mode to define FXS ports, then create POTS and VoIP dial peers with matching port and codec parameters to route calls.
Q
What licensing is required for the NIM-4FXS on ISR4451-X?
A
No additional module license is required; voice features run under the ISR4451-X universal IOS XE license, with optional Security or Unified Communications upgrades as needed.
Q
How does the NIM-4FXS enhance voice quality and reliability?
A
Integrated DSPs provide echo cancellation, jitter buffering, and packet loss concealment, ensuring clear voice calls over converged networks.
Q
What are the common use cases for the NIM-4FXS in enterprise networks?
A
Typical uses include branch office analog phone connectivity, fax relay, emergency phone lines, and legacy equipment integration in unified communications deployments.
Q
Does the NIM-4FXS support echo cancellation?
A
Yes, the module includes hardware-based G.168 echo cancellation to meet carrier-grade voice quality requirements.
Q
What warranty and support options are available for the NIM-4FXS?
A
Cisco offers a one-year limited hardware warranty with the option to upgrade to Cisco SMARTnet for 24x7 support, software updates, and advance replacement.
