United States$5,000,000+
Inventory Delivered By
B
Bilal Anwar
5
FXO ports delivered clear analog call quality.
NIM-4FXO
Original Stock
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NIM-4FXO 4-port Network Interface Module - FXO (Universal)
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Name:
NIM-4FXO
- Description:
- NIM-4FXO 4-port Network Interface Module - FXO (Universal)
- Rating:
Added to cart 28 times recently
- Availability:
In stock - Ready to Ship
- Brand:
- Cisco
- GTIN:
- 998384527551
- Condition:
- Warranty:
- 3
- List Price:
$1,180.00
- Price:
$417.0064.7% off
Quantity:
1
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NIM-4FXO Overview
NIM-4FXO is a robust WAN module engineered to deliver reliable analog voice connectivity with four FXO ports for interfacing traditional telephone lines. Designed for modular installation, this card seamlessly integrates into routers and switches while utilizing industry-standard FXO signaling protocols to support legacy telephony and unified communications systems.
Optimized for enterprise and data center environments, the NIM-4FXO enables efficient scaling of voice services without compromising performance. Its compact modular form factor and proven compatibility with leading platforms make it an ideal solution for upgrading server network interfaces and expanding connectivity into high-demand voice applications.
NIM-4FXO price is $417.00, a 64.7% saving from the Cisco list price of $1,180.00. NIM-4FXO is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for NIM-4FXO for additional pricing. Browse the full Cisco Isr 4000 Router Modules & Cards series or explore all Cisco products.
NIM-4FXO Specifications
- Product Type
- Network Module / Network Card
- Module Type
- WAN
- Data Rate
- N/A
- Connector Type
- RJ-11
- Supported Protocols
- FXO
- Form Factor
- Modular
- Operating Temperature
- 0 to 70°C
- Storage Temperature
- -40 to 85°C
- Input Voltage
- 3.3V
- Compatibility
- Cisco
- Max Speed
- N/A
- Supported Features
- N/A
- Power Consumption
- 5W
- Interface Ports
- FXO
- Expansion Slots
- NIM
- Product Name
- NIM-4FXO
- Height
- N/A
- Width
- N/A
- Depth
- N/A
- Weight
- N/A
NIM-4FXO Use Case
Emergency PSTN Failover for Call Centers with NIM-4FXO 4-port FXO
In a medium-sized call center deploying Cisco ISR routers, the NIM-4FXO 4-port Network Interface Module FXO (Universal) delivers automatic PSTN line failover when SIP trunks go down, ensuring uninterrupted agent connectivity. This solution boosts uptime to 99.9%, minimizes lost calls, and optimizes operational costs through seamless analog-to-VoIP integration.
Seamless Branch Office VoIP-PSTN Integration Using NIM-4FXO
A national retail chain equips its remote outlets with NIM-4FXO 4-port FXO (Universal) modules on Cisco routers to bridge legacy analog trunks into the VoIP network, enabling both inbound PSTN calls and outbound dialing. The integration reduces carrier expenses by up to 30%, simplifies telecom management, and compresses deployment time from days to hours.
Enterprise Unified Communications Backup via NIM-4FXO 4-port FXO
A large corporate IT team deploys NIM-4FXO modules on ISR routers to establish an automated PSTN backup path for its unified communications platform, guaranteeing voice service continuity during SIP provider outages. The outcome is enhanced business resilience, full regulatory compliance, and near-zero disruption with minimal infrastructure changes.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| NIM-4FXO |  NIM-4T= |  NIM-SSD |  NIM-2GE-CU-SFP |  NIM-2FXSP= | |
|---|---|---|---|---|---|
| Product Type | Network Module / Network Card | Network Module / Network Card | Network Module / Network Card | Network Module | Network Module / Network Card |
| Module Type | WAN | Ethernet | NIM | Ethernet | Ethernet |
| Data Rate | N/A | 10G | 10G | 1G | 10G |
| Connector Type | RJ-11 | RJ-45 | SFP+ | RJ-45 / SFP | SFP+ |
| Supported Protocols | FXO | TCP/IP | TCP/IP, iSCSI | TCP/IP | TCP/IP, iSCSI |
| Form Factor | Modular | PCIe | PCIe | Modular | PCIe Modular |
| Operating Temperature | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C |
| Storage Temperature | -40 to 85°C | -40 to 85°C | -40 to 85°C | N/A | -40 to 85°C |
| Input Voltage | 3.3V | 3.3V | 3.3V | 3.3V | 3.3V |
| Compatibility | Cisco | Cisco / Juniper / Arista / Dell / HP | Cisco, Juniper, Dell, HP | Cisco | Cisco, Juniper, Arista, Dell, HP |
| Max Speed | N/A | 10Gbps | 10Gbps | 1Gbps | 10Gbps |
| Supported Features | N/A | Auto-negotiation / Wake-on-LAN / Jumbo Frames / QoS | Auto-negotiation, Wake-on-LAN, Jumbo Frames, QoS | Auto-negotiation / Wake-on-LAN / Jumbo Frames / QoS | Auto-negotiation, Jumbo Frames, QoS |
| Power Consumption | 5W | 12W | 15W | N/A | N/A |
| Interface Ports | FXO | Ethernet | SFP+ | RJ-45 / SFP | SFP+ |
| Expansion Slots | NIM | NIM | NIM | NIM | NIM |
| Product Name | NIM-4FXO | NIM-4T= | NIM-SSD High Performance Network Module | NIM-2GE-CU-SFP | NIM-2FXSP= |
| Height | N/A | 1.5 inches | 0.84 inches | N/A | N/A |
| Width | N/A | 4.4 inches | 4.37 inches | N/A | N/A |
| Depth | N/A | 7 inches | 7.0 inches | N/A | N/A |
| Weight | N/A | 1.2 lbs | 1.2 lbs | N/A | N/A |
Reviews & Ratings
S
Stephen Marsh
5
Reliable module for PSTN integration.
U
Usman Tariq
5
No echo or signaling issues experienced.
D
Daniel Foster
5
Works well with Cisco voice gateways.
N
Nida Parveen
4
Solid voice expansion module.
B
Bilal Anwar
4
FXO ports delivered clear analog call quality.
S
Stephen Marsh
4
Reliable module for PSTN integration.
U
Usman Tariq
5
No echo or signaling issues experienced.
D
Daniel Foster
5
Works well with Cisco voice gateways.
N
Nida Parveen
5
Solid voice expansion module.
Questions & Answers
What is the NIM-4FXO module?
The NIM-4FXO is a 4-port Network Interface Module (FXO Universal) that enables Cisco routers to connect analog PSTN lines to a VoIP network for reliable telephony integration.
Which routers are compatible with the NIM-4FXO?
The NIM-4FXO is compatible with Cisco ISR 4000 and 1000 Series routers that feature a modular NIM slot and support Cisco IOS-XE software.
How many simultaneous calls does the NIM-4FXO support?
Each of the four FXO ports carries one concurrent call, delivering up to four simultaneous voice sessions per module.
What PSTN signaling types does the NIM-4FXO support?
It supports loop-start, ground-start, battery reversal, and talk-battery signaling to ensure universal interoperability with global analog telco networks.
How do I install the NIM-4FXO in my router?
Power down your router, insert the NIM-4FXO into an available NIM slot, secure the module with screws, then reboot the router. Verify detection under ‘show platform hardware slot’ in Cisco IOS-XE.
What configuration is required to activate the NIM-4FXO?
Configure each FXO port with dial-peer voice commands, PSTN interface parameters, and codec settings. Use ‘voice-port fxo’ and ‘dial-peer voice’ commands to map calls to VoIP or PSTN.
Does the NIM-4FXO support caller ID and CLID delivery?
Yes. It supports FSK and DTMF-based caller ID detection and generation, ensuring accurate CLI presentation on inbound and outbound calls.
Can I use the NIM-4FXO module with foreign analog line standards?
Yes. The universal FXO design auto-senses line voltage, impedance, and ring characteristics, making it compatible with North American, European, and international PSTN analog standards.
What are the power requirements for the NIM-4FXO?
The module draws power directly from the host router. No external power supply is needed, simplifying installation and reducing cable clutter.
Is echo cancellation supported on the NIM-4FXO?
Yes. The NIM-4FXO provides G.168 compliant echo cancellation up to 128 ms tail length for clear, high-quality voice traffic over analog lines.
Which codecs are supported by the NIM-4FXO module?
It supports G.711 μ-law and A-law, G.729, G.726, and G.723.1 codecs, allowing you to optimize bandwidth usage and voice quality.
How do I monitor FXO port status and alarms?
Use Cisco IOS-XE commands such as ‘show voice port summary’ and ‘show voice call status’. SNMP traps and syslog messages provide real-time alerts on port alarms.
What are the environmental specifications of the NIM-4FXO?
Operating temperature: 0°C to 40°C; storage temperature: –40°C to 70°C; relative humidity: 5% to 85% non-condensing, making it suitable for most data-center environments.
What warranty and support options are available for the NIM-4FXO?
Cisco provides a one-year limited hardware warranty and access to Cisco SMARTnet® service for software updates, hardware replacement, and 24/7 technical support.
How can I verify the part number and SKU of the module?
Check the label on the module’s metal faceplate for SKU NIM-4FXO. You can also confirm via ‘show inventory’ in Cisco IOS-XE, which lists the part number and description.
Where can I purchase the NIM-4FXO and how much does it cost?
Authorized Cisco partners and distributors sell the NIM-4FXO module. Pricing varies by region and order volume. Contact your Cisco reseller for a customized quote and delivery options.