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by Cisco
Product Line: Cisco Series
Product Type: Network Interface Module
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Original price $0.00 - Original price $0.00
Original price
$0.00 - $0.00
Current price $0.00
Title: Surplus

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Product Description

The NIM-2FXS/4FXOP is designed for Cisco 4400 and 4300 series with a total of 6 ports, including 2 FXS/FXS-E/DID ports and 4 FXO ports, compatible with Cisco IOS Release XE16.5 and above. It offers advanced voice features such as echo cancellation, comfort noise generation, and DTMF detection, ensuring quality voice communication. The module adheres to international standards including TIA-968-B, CS-03, AS/CA S003, and PTC220, and is built with immunity specifications CISPR24: 2010, EN 300 386 V1.6.1, and EN55024: 2010 for reliable operation.

FAQs for the NIM-2FXS/4FXOP

  • What is the total number of ports available on this device?
  • The device features 6 total ports, including 2 FXS/FXS-E/DID ports and 4 FXO ports.
  • Can this hardware operate with Cisco IOS Release XE16.5?
  • Yes, it supports Cisco IOS Release XE16.5 and above.
  • Which ISR Series are compatible with this networking hardware?
  • It is compatible with Cisco 4400 and 4300 Series ISRs.
  • Does the device meet international standards for telecommunications?
  • It adheres to multiple standards including TIA-968-B, CS-03, AS/CA S003, and PTC220.
  • What are the main features of the FXO ports?
  • FXO ports feature Ground Start and Loop Start modes, CDR Information, Internetworking, Cable Detection, and Overload Protection.
  • Is echo cancellation supported by this hardware?
  • Yes, it includes echo cancellation, comfort noise generation, DTMF detection, and voice activity detection.
  • What type of connections do FXS ports support?
  • FXS ports support direct connections to phones, fax machines, and key systems.
  • Does this hardware support SNMP traps for alarm responses?
  • Yes, SNMP traps are generated in response to alarms.
  • Is Online Insertion and Removal (OIR) supported?
  • Yes, OIR support is available for this device.
  • What type of cable is recommended for use with this hardware?
  • A straight-through 2-wire cable type is recommended for optimal performance.

Product Review

The Cisco NIM-2FXS/4FXOP module offers a balanced mix of 2 FXS and 4 FXO ports, catering to versatile voice interfacing needs for businesses, compatible with Cisco IOS Release XE16.5 and above and supported on Cisco 4400 and 4300 ISR series. While its comprehensive feature set, including echo cancellation, voice activity detection, and support for numerous international standards, enhances its usability in global markets, the lack of support for Cisco 2900 and 3900 series ISRs limits its application in older network infrastructures. Additionally, its weight of 0.52 lbs and the inclusion of features like SNMP traps for alarm responses and OIR support underscore its utility and ease of integration in contemporary network environments.


The Cisco NIM-2FXS/4FXOP module is designed to enhance connectivity within enterprise voice networks, providing a versatile solution for integrating both traditional telephony and VoIP infrastructures. This module features a total of six ports, comprising two FXS/FXS-E/DID ports and four FXO ports, making it suitable for a wide range of applications. It is compatible with Cisco IOS Release XE16.5 and above, and is supported on the Cisco 4400 and 4300 Integrated Services Routers (ISR) series, ensuring seamless integration into existing network infrastructures. Key specifications include: - Total Number of Ports: 6 - Number of FXS/FXS-E/DID Ports: 2 - Number of FXO Ports: 4 This module adheres to multiple standards, including TIA-968-B (USA), CS-03 (Canada), AS/CA S003 (Australia), and PTC220 (New Zealand), ensuring compliance with international telecommunication requirements. It also meets various immunity standards such as CISPR24: 2010, EN 300 386 V1.6.1, EN55024: 2010, KN24: 2011, and TCVN 7317: 2003, demonstrating its resilience to environmental and electrical interference. Weighing at 0.52 lbs, the NIM-2FXS/4FXOP module is lightweight yet packed with features designed to enhance voice communication capabilities. These include echo cancellation, comfort noise generation, DTMF detection, voice activity detection, and modem detection and pass-through. It also supports RFC 4733 digit relay and provides acoustic shock protection, ensuring high-quality, reliable voice transmission. For FXS connectivity, the module offers features to support either FXS or DID functionality, configurable long loop ports, message waiting indicator, and cable detection. The FXO features enhance functionality with ground start and loop start modes, CDR information for call detail records, internetworking capabilities, cable detection, and overload protection. These features ensure that the module can efficiently handle connections to PBX or key systems and off-premises connections to the public switched telephone network for FXO ports, as well as direct connections to phones, fax machines, and key systems for FXS ports. The module requires straight-through 2-wire cables for connectivity and is designed without the need for jumpers, simplifying installation and maintenance. It also generates SNMP traps in response to alarms, facilitating network management and monitoring. Despite its analog nature, this module integrates seamlessly into digital environments, providing a bridge between analog devices and digital voice networks. One of the notable advantages of the NIM-2FXS/4FXOP module is its support for Online Insertion and Removal (OIR), allowing for module replacement without the need to power down the router, minimizing downtime and ensuring continuous operation. In summary, the Cisco NIM-2FXS/4FXOP module is a comprehensive solution for businesses looking to integrate analog devices into their digital voice networks. Its support for a wide range of standards, combined with advanced voice and management features, makes it an essential component for modern telecommunication infrastructures.


Item Code NIM-2FXS/4FXOP by Cisco
Total Ports 6
FXS/FXS-E/DID Port Count 2
FXO Port Quantity 4
Minimum IOS Version XE16.5+
Compatible ISR Models 4300, 4400 Series
Compliance Standards USA: TIA-968-B, Canada: CS-03, Australia: AS/CA S003, New Zealand: PTC220
Immunity Standards CISPR24: 2010, EN 300 386 V1.6.1, EN55024: 2010, KN24: 2011, TCVN 7317: 2003
Mass 0.52 pounds
Echo Reduction Enabled
Noise Generation for Comfort Enabled
DTMF Sensing Enabled
Voice Detection Enabled
Modem Identification and Support Enabled
Support for RFC 4733 Digit Signaling Enabled
Protection Against Acoustic Shock Enabled
FXS Functional Capabilities FXS or DID Modes, Enhanced Loop Ports, Indication for Message Waiting, Cable Recognition
FXO Functional Capabilities Loop and Ground Start, Call Detail Records, Network Bridging, Cable Recognition, Overload Safeguard
FXO Interface Applications Connection to PBX or Key Systems, PSTN Off-Premises Link
FXS Interface Applications Direct Link to Telephones, Facsimile Devices, and Key Systems
Wiring Type 2-Wire Straight-Through Cable
SNMP Notification on Alerts Enabled
Signal Type Analog
Presence of Jumpers None
Compatibility with ISR 2900 and 3900 Series Not Supported
Online Insertion and Removal Supported

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