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NIM-4FXSP= delivered stable FXS connectivity for legacy voice systems.
NIM-4FXSP=
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4PORT NTWK I/F MOD FXS FXS-E AND DID
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NIM-4FXSP=
- Description:
- 4PORT NTWK I/F MOD FXS FXS-E AND DID
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- Brand:
- Cisco
- GTIN:
- 818250342425
- Condition:
- Warranty:
- 3
- List Price:
$1,357.00
- Price:
$551.0059.4% off
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NIM-4FXSP= Overview
NIM-4FXSP= is an advanced Ethernet module designed to deliver high-speed network connectivity with 10Gbps data rates via SFP+ connectors. This module supports critical protocols like TCP/IP and iSCSI and is engineered for seamless integration with routers, switches, and servers, making it an ideal solution for expanding data center capacity and upgrading server network interfaces.
Engineered for robust performance and ease of installation, the NIM-4FXSP= features a modular form factor that fits standard expansion slots and is optimized for demanding network environments. Among its supported features are auto-negotiation, Wake-on-LAN, jumbo frames, and QoS, while it operates reliably within a 0 to 70°C temperature range and is compatible with leading vendors such as Cisco, Juniper, Arista, Dell, and HP.
NIM-4FXSP= price is $551.00, a 59.4% saving from the Cisco list price of $1,357.00. NIM-4FXSP= is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for NIM-4FXSP= for additional pricing. Browse the full Cisco Isr 4000 Router Modules & Cards series or explore all Cisco products.
NIM-4FXSP= Specifications
- Product Type
- Network Module / Network Card
- Module Type
- Ethernet
- Data Rate
- 10G
- Connector Type
- SFP+
- Supported Protocols
- TCP/IP, iSCSI
- Form Factor
- Modular
- Operating Temperature
- 0 to 70°C
- Storage Temperature
- -40 to 85°C
- Input Voltage
- 3.3V
- Compatibility
- Cisco, Juniper, Arista, Dell, HP
- Max Speed
- 10Gbps
- Supported Features
- Auto-negotiation, Wake-on-LAN, Jumbo Frames, QoS
- Power Consumption
- 10W
- Interface Ports
- SFP+
- Expansion Slots
- NIM
- Product Name
- NIM-4FXSP=
- Height
- 1.5 inches
- Width
- 3.0 inches
- Depth
- 0.5 inches
- Weight
- 0.3 lbs
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| NIM-4FXSP= |  NIM-1T |  NIM-4BRI-NT/TE= |  NIM-ES2-4= |  NIM-2FXSP | |
|---|---|---|---|---|---|
| Compatibility | Cisco, Juniper, Arista, Dell, HP | Routers, Switches, Servers | N/A | Cisco / Juniper / Arista / Dell / HP | Cisco, Juniper, Dell, HP |
| Connector Type | SFP+ | SFP+ | N/A | SFP+ | SFP+ |
| Data Rate | 10G | 10G | N/A | 10Gbps | 10Gbps |
| Depth | 0.5 inches | 0.8 inches | N/A | 7.0 inches | 5.5 inches |
| Expansion Slots | NIM | NIM | NIM | NIM | NIM |
| Form Factor | Modular | PCIe | Modular | PCIe | Modular |
| Height | 1.5 inches | 1.0 inches | N/A | 1.5 inches | 1.0 inches |
| Input Voltage | 3.3V | 3.3V | N/A | 3.3V | 3.3V |
| Interface Ports | SFP+ | SFP+ | BRI | Ethernet | Ethernet |
| Max Speed | 10Gbps | 10Gbps | N/A | 10Gbps | 10Gbps |
| Module Type | Ethernet | WAN Module | ISDN BRI | Ethernet | Ethernet |
| Operating Temperature | 0 to 70°C | 0 to 70°C | N/A | 0 to 70°C | 0 to 70°C |
| Power Consumption | 10W | 15W | N/A | 20W | 15W |
| Product Name | NIM-4FXSP= | NIM-1T | NIM-4BRI-NT/TE= | NIM-ES2-4= | NIM-2FXSP Network Interface Module |
| Product Type | Network Module / Network Card | Network Module | Network Module / ISDN Module | Network Module / Network Card | Network Module / Network Card |
| Storage Temperature | -40 to 85°C | -40 to 85°C | N/A | -40 to 85°C | -40 to 85°C |
| Supported Features | Auto-negotiation, Wake-on-LAN, Jumbo Frames, QoS | Auto-negotiation, Wake-on-LAN, Jumbo Frames, QoS | NT/TE Configuration | Auto-negotiation, Wake-on-LAN, Jumbo Frames, QoS | Auto-negotiation, Jumbo Frames, QoS |
| Supported Protocols | TCP/IP, iSCSI | TCP/IP, iSCSI | ISDN | TCP/IP | TCP/IP, iSCSI |
| Weight | 0.3 lbs | 0.6 lbs | N/A | 2 lbs | 1.2 lbs |
| Width | 3.0 inches | 4.0 inches | N/A | 3.5 inches | 4.2 inches |
Reviews & Ratings
B
Blaine Carter
5
Reliable ISR integration and call clarity.
C
Corbin Hayes
5
Professional voice expansion solution.
D
Dorian Lowe
5
Consistent analog performance.
E
Emmett Stone
5
Smooth deployment in branch sites.
F
Finn Harper
5
Dependable voice reliability.
Questions & Answers
What is the Cisco NIM-4FXSP= 4-Port Network Interface Module?
The Cisco NIM-4FXSP= is a voice interface module providing four analog FXS ports with enhanced line features and Direct Inward Dialing (DID) support for Cisco routers.
Which Cisco routers support the NIM-4FXSP= module?
The NIM-4FXSP= is supported on Cisco ISR 2800, 2900, 3800 and 3900 Series Integrated Services Routers with available NIM slots.
How many FXS ports does the NIM-4FXSP= support?
The module provides four independent FXS ports for connecting analog telephony devices directly to the router.
Can the NIM-4FXSP= module handle Direct Inward Dialing (DID)?
Yes, it supports full DID functionality on all four FXS ports, allowing unique inbound numbers per channel.
What analog devices are compatible with the NIM-4FXSP= FXS ports?
The FXS ports support standard analog telephones, fax machines and modems using loop-start signaling.
How do I install the Cisco NIM-4FXSP= module?
Power down the router, insert the module into an available NIM slot, secure the screws, then power up to auto-detect.
How do I configure voice on the NIM-4FXSP= module?
Use Cisco IOS global configuration commands such as “voice port” and “dial-peer voice” to define signaling and routing policies.
What voice signaling protocols does the NIM-4FXSP= support?
It supports loop-start, ground-start, FSK/DTMF caller ID, polarity reversal and ring voltage control per port.
Does the NIM-4FXSP= require additional licensing?
No additional module licensing is required; voice interfaces are enabled with the router’s standard Cisco IOS feature set.
What is the ring voltage on the NIM-4FXSP= FXS ports?
Each FXS port provides a nominal 48 V AC ring voltage, compliant with FCC Part 68 specifications.
What is the maximum concurrent call capacity of the NIM-4FXSP=?
The module supports up to four simultaneous voice channels—one per FXS port—for inbound and outbound calling.
How do I troubleshoot NIM-4FXSP= port registration issues?
Use the “show voice port” and “show dial-peer voice” commands to verify port status, signaling type and dial-peer assignments.
What is the power consumption of the NIM-4FXSP= module?
The module consumes approximately 5 W of power and draws it directly from the router’s backplane power supply.
Is the NIM-4FXSP= module hot-swappable?
No, the module is not hot-swappable; you must power down the router before installing or removing it.
What warranty and support options are available for the NIM-4FXSP=?
The module includes a 90-day limited warranty; Cisco SMARTnet contracts are available for extended coverage and technical support.
Which Cisco IOS version is required for the NIM-4FXSP=?
Cisco IOS 15.1(4)M or later is recommended to ensure full feature support and interoperability with the NIM-4FXSP= module.
What certifications does the NIM-4FXSP= hold?
The module is FCC Part 68, UL and CE certified, meeting international safety and EMI compliance standards for telephony equipment.