United States$5,000,000+
Inventory Delivered By
A
Anthony Doyle
5
Voice module provided clear analog call quality.
NIM-2FXS/4FXOP
Voice Module (2-port FXS and 4-port FXO)
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Name:
NIM-2FXS/4FXOP
- Description:
- Voice Module (2-port FXS and 4-port FXO)
- Rating:
Added to cart 28 times recently
- Availability:
In stock - Ready to Ship
- Brand:
- Cisco
- GTIN:
- 882658947681
- Condition:
- Warranty:
- 3
- List Price:
$1,652.00
- Price:
$1,036.0037.3% off
Quantity:
1
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NIM-2FXS/4FXOP Overview
NIM-2FXS/4FXOP is a high-performance network interface module designed to integrate analog telephony with digital network communications. Engineered for enterprise routers and modular systems, this module offers 2 FXS ports for analog telephone connections along with 4 FXO ports for interfacing with external central office lines, supporting data paths up to 1Gbps for efficient signal management.
Built with a compact, modular form factor for seamless installation, the NIM-2FXS/4FXOP features RJ-11 connectors for reliable telephony access and supports standard TCP/IP protocols to ensure smooth data and voice traffic integration. Compatible with leading networking platforms such as Cisco, it is ideally suited for upgrading legacy voice networks in data centers, branch offices, and enterprise communication systems.
NIM-2FXS/4FXOP price is $1,036.00, a 37.3% saving from the Cisco list price of $1,652.00. NIM-2FXS/4FXOP is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for NIM-2FXS/4FXOP for additional pricing. Browse the full Cisco Isr 4000 Router Modules & Cards series or explore all Cisco products.
NIM-2FXS/4FXOP Specifications
- Product Type
- Network Module
- Module Type
- NIM
- Data Rate
- 1G
- Connector Type
- RJ-11
- Supported Protocols
- TCP/IP
- Form Factor
- Modular
- Operating Temperature
- 0 to 70°C
- Storage Temperature
- -40 to 85°C
- Input Voltage
- 3.3V
- Compatibility
- Cisco
- Max Speed
- 1Gbps
- Supported Features
- QoS
- Power Consumption
- 15W
- Interface Ports
- N/A
- Expansion Slots
- NIM
- Product Name
- NIM-2FXS/4FXOP
- Height
- N/A
- Width
- N/A
- Depth
- N/A
- Weight
- N/A
NIM-2FXS/4FXOP Use Case
Branch Office Analog Telephony Integration
In a multi-site enterprise deploying a Cisco ISR router with the NIM-2FXS/4FXOP-Voice Module, IT teams connect up to two analog desktop phones (FXS) and four PSTN trunks (FXO) at each remote office. This setup preserves existing analog handsets, streamlines local outbound/inbound dialing, and reduces capital spending on new IP phones. Benefit: Rapid branch-office deployment with uninterrupted analog service and optimized telephony costs.
Disaster Recovery and Emergency PSTN Failover
A financial services firm uses the NIM-2FXS/4FXOP-Voice Module within its primary Cisco ISR to implement PSTN fallback for critical voice traffic. Upon WAN or SIP trunk failure, calls automatically route through the four FXO ports to local PSTN lines, while two FXS ports maintain analog paging and alarm systems. Benefit: Guaranteed voice continuity with zero-touch failover, safeguarding business-critical communications and compliance with uptime SLAs.
Legacy PBX Modernization in Remote Healthcare Clinics
A regional healthcare network migrates small clinics from aging key systems to a centralized IP-PBX. By installing the NIM-2FXS/4FXOP-Voice Module on-site, clinics retain analog exam-room phones and fax machines via FXS ports, while routing patient-appointment lines through FXO ports to the cloud PBX. Benefit: Phased migration with minimal disruption, preserved medical device integrations, and consolidated voice management for improved operational efficiency.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
 NIM-2FXS/4FXOP |  NIM-2FXO= |  NIM-1T |  NIM-2GE-CU-SFP |  SM-X-4X1G-1X10G | |
|---|---|---|---|---|---|
| Product Type | Network Module | Network Interface Module | Network Module | Network Module | Network Module / Network Card |
| Module Type | NIM | WAN | WAN Module | Ethernet | Ethernet |
| Data Rate | 1G | N/A | 10G | 1G | 1Gbps / 10Gbps |
| Connector Type | RJ-11 | RJ-11 | SFP+ | RJ-45 / SFP | SFP+ |
| Supported Protocols | TCP/IP | FXO | TCP/IP, iSCSI | TCP/IP | TCP/IP |
| Form Factor | Modular | Modular | PCIe | Modular | PCIe |
| 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 | Routers, Switches, Servers | Cisco | Cisco / Juniper / Arista / Dell / HP |
| Max Speed | 1Gbps | N/A | 10Gbps | 1Gbps | 10Gbps |
| Supported Features | QoS | Auto-sensing, Caller ID support | Auto-negotiation, Wake-on-LAN, Jumbo Frames, QoS | Auto-negotiation / Wake-on-LAN / Jumbo Frames / QoS | Auto-negotiation / Jumbo Frames / QoS |
| Power Consumption | 15W | 5W | 15W | N/A | 8W |
| Interface Ports | N/A | FXO | SFP+ | RJ-45 / SFP | Ethernet / SFP+ |
| Expansion Slots | NIM | NIM | NIM | NIM | PCIe |
| Product Name | NIM-2FXS/4FXOP | NIM-2FXO= | NIM-1T | NIM-2GE-CU-SFP | SM-X-4X1G-1X10G |
| Height | N/A | 1.75 inches | 1.0 inches | N/A | N/A |
| Width | N/A | 3.4 inches | 4.0 inches | N/A | N/A |
| Depth | N/A | 10.5 inches | 0.8 inches | N/A | N/A |
| Weight | N/A | 1.2 lbs | 0.6 lbs | N/A | N/A |
Reviews & Ratings
B
Bushra Younis
4
Good density for voice gateways.
K
Klaus Weber
5
Reliable FXO and FXS ports.
R
Rachel Green
3
Easy to deploy.
Z
Zain Ul Abideen
4
Met expectations.
Questions & Answers
What is the NIM-2FXS/4FXOP Voice Module?
The NIM-2FXS/4FXOP is a modular interface card featuring two FXS and four FXO ports, designed for Cisco routers to enable analog telephony integration and PSTN connectivity.
Which ports does the NIM-2FXS/4FXOP support?
This voice module provides two Foreign Exchange Subscriber (FXS) ports for analog extension connections and four Foreign Exchange Office (FXO) ports for PSTN trunk termination.
Which routers are compatible with the NIM-2FXS/4FXOP module?
The module is compatible with Cisco ISR G2 series routers including the 1900, 2900, and 3900 platforms equipped with an available NIM slot.
How do I install the NIM-2FXS/4FXOP voice module?
Power off the router, insert the module into the NIM slot, secure the captive screws, reconnect power, and provision the ports via the router’s CLI.