United States$5,000,000+
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E
Emmett Stone
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NIM-2FXS delivered stable analog voice connectivity for branch telephony.
NIM-2FXS
2-Port Network Interface Module - FXS. FXS-E and DID
FEATURED DEAL
Name:
NIM-2FXS
- Description:
- 2-Port Network Interface Module - FXS. FXS-E and DID
- Rating:
Added to cart 28 times recently
- Availability:
In stock - Ready to Ship
- Brand:
- Cisco
- GTIN:
- 882658659454
- Condition:
- Warranty:
- 3
- List Price:
$575.00
- Price:
$246.0057.2% off
Quantity:
1
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NIM-2FXS Overview
Overview of NIM-2FXS
NIM-2FXS is a high-performance telephony module designed with two FXS interfaces to seamlessly integrate legacy analog voice connectivity into modern IP-based networks. The module supports a data rate of up to 1Gbps via an RJ-45 connector, ensuring reliable transmission of voice and data over TCP/IP networks while maintaining compatibility with leading routers, switches, and voice gateways.
Engineered in a robust PCIe form factor, NIM-2FXS adheres to industry protocols including TCP/IP and SIP, making it ideal for environments requiring secure and efficient voice over IP communications. Its modular design simplifies installation in enterprise data centers and unified communications systems, providing an effective solution for expanding legacy telephony infrastructure and upgrading network interfaces.
NIM-2FXS price is $246.00, a 57.2% saving from the Cisco list price of $575.00. NIM-2FXS is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for NIM-2FXS for additional pricing. Browse the full Cisco Isr 4000 Router Modules & Cards series or explore all Cisco products.
NIM-2FXS Specifications
- Product Type
- Telephony Network Module
- Module Type
- FXS
- Data Rate
- 1Gbps
- Connector Type
- RJ-45
- Supported Protocols
- TCP/IP, SIP
- Form Factor
- PCIe
- Operating Temperature
- 0 to 70°C
- Storage Temperature
- -40 to 85°C
- Input Voltage
- 3.3V
- Compatibility
- Cisco, Juniper, Arista, Dell, HP
- Max Speed
- 1Gbps
- Supported Features
- Auto-negotiation, Wake-on-LAN, Jumbo Frames, QoS
- Power Consumption
- 15W
- Interface Ports
- FXS
- Expansion Slots
- NIM
- Product Name
- NIM-2FXS
- Height
- N/A
- Width
- N/A
- Depth
- N/A
- Weight
- N/A
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
 NIM-2FXS |  NIM-2FXSP |  NIM-1MFT-T1/E1 |  NIM-4FXSP= |  NIM-SSD | |
|---|---|---|---|---|---|
| Compatibility | Cisco, Juniper, Arista, Dell, HP | Cisco, Juniper, Dell, HP | Cisco / Juniper / Arista / Dell / HP | Cisco, Juniper, Arista, Dell, HP | Cisco, Juniper, Dell, HP |
| Connector Type | RJ-45 | SFP+ | RJ-48 | SFP+ | SFP+ |
| Data Rate | 1Gbps | 10Gbps | 1.544 Mbps / 2.048 Mbps | 10G | 10G |
| Depth | N/A | 5.5 inches | 5.0 inches | 0.5 inches | 7.0 inches |
| Expansion Slots | NIM | NIM | NIM | NIM | NIM |
| Form Factor | PCIe | Modular | Modular | Modular | PCIe |
| Height | N/A | 1.0 inches | 1.5 inches | 1.5 inches | 0.84 inches |
| Input Voltage | 3.3V | 3.3V | 3.3V | 3.3V | 3.3V |
| Interface Ports | FXS | Ethernet | N/A | SFP+ | SFP+ |
| Max Speed | 1Gbps | 10Gbps | 1.544 Mbps / 2.048 Mbps | 10Gbps | 10Gbps |
| Module Type | FXS | Ethernet | WAN Module | Ethernet | NIM |
| Operating Temperature | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C |
| Power Consumption | 15W | 15W | 8W | 10W | 15W |
| Product Name | NIM-2FXS | NIM-2FXSP Network Interface Module | NIM-1MFT-T1/E1 | NIM-4FXSP= | NIM-SSD High Performance Network Module |
| Product Type | Telephony Network Module | Network Module / Network Card | Network Module | Network Module / Network Card | Network Module / Network Card |
| Storage Temperature | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C |
| Supported Features | Auto-negotiation, Wake-on-LAN, Jumbo Frames, QoS | Auto-negotiation, Jumbo Frames, QoS | N/A | Auto-negotiation, Wake-on-LAN, Jumbo Frames, QoS | Auto-negotiation, Wake-on-LAN, Jumbo Frames, QoS |
| Supported Protocols | TCP/IP, SIP | TCP/IP, iSCSI | N/A | TCP/IP, iSCSI | TCP/IP, iSCSI |
| Weight | N/A | 1.2 lbs | 1.2 lbs | 0.3 lbs | 1.2 lbs |
| Width | N/A | 4.2 inches | 3.4 inches | 3.0 inches | 4.37 inches |
Reviews & Ratings
F
Finn Harper
5
Clear call quality and reliable FXS ports.
G
Galen Pierce
5
Smooth integration into ISR platform.
H
Hugo Carter
5
Professional voice module with predictable uptime.
I
Ian Norris
4
Dependable DID support for legacy systems.
J
Jace Mercer
4
Consistent voice stability under load.
Questions & Answers
What is the Cisco NIM-2FXS (2-Port Network Interface Module)?
The Cisco NIM-2FXS is a 2-port network interface module providing Foreign Exchange Station (FXS) connectivity for analog voice devices on supported Cisco routers.
How many FXS ports does the NIM-2FXS module provide?
The NIM-2FXS module provides two independent FXS ports for direct connection of analog telephones, fax machines, or modems.
What is the difference between FXS and FXO?
An FXS port supplies dial tone and battery voltage to analog endpoints, while an FXO port receives dial tone from a PSTN line.
What is Direct Inward Dialing (DID) on the NIM-2FXS?
DID on the NIM-2FXS enables multiple public telephone numbers to ring on separate analog devices through a single trunk group.
Which Cisco router platforms support the NIM-2FXS module?
The NIM-2FXS is supported on Cisco ISR 4000, 2900, and 3900 series routers running Cisco IOS XE software.
How do I install the NIM-2FXS in a Cisco router?
Power down the router, insert the NIM-2FXS into an available NIM slot, secure it with the mounting screw, then power the router back on.
What voice codecs are supported by the NIM-2FXS?
The NIM-2FXS supports G.711 (A-law and μ-law), G.729a, G.723.1, and G.726 codecs for analog voice compression.
Can I connect analog phones directly to the NIM-2FXS?
Yes, you can connect standard analog telephones, fax machines, or modems directly to the FXS ports on the NIM-2FXS.
Does the NIM-2FXS support echo cancellation?
Yes, the NIM-2FXS includes G.168-compliant echo cancellation to improve call quality.
Is the NIM-2FXS module hot-swappable?
No, the NIM-2FXS is not hot-swappable; you must power down the router before installing or removing the module.
How do I configure dial peers for the NIM-2FXS?
Use Cisco IOS XE CLI commands under voice service voip and voice dial-peer to define incoming and outgoing analog call routes.
What power requirements does the NIM-2FXS have?
The NIM-2FXS draws power directly from the router’s chassis; no external power supply is required.
Does the NIM-2FXS support fax transmission?
Yes, the NIM-2FXS supports fax over IP using T.38 and G.711 pass-through methods.
How do I troubleshoot NIM-2FXS connectivity issues?
Verify cable integrity, check IOS XE voice port status, use debug voice port commands, and confirm dial-peer configurations.
Where can I download the latest software for the NIM-2FXS?
Visit Cisco’s Software Download portal, search for your router platform, and select the compatible Cisco IOS XE release.
What are the key benefits of deploying the NIM-2FXS?
The NIM-2FXS delivers flexible analog connectivity, streamlined voice integration, and centralized management in a single router chassis.