Introducció
This user manual provides comprehensive instructions for the installation, operation, maintenance, and troubleshooting of the Cisco NIM-2FXS/4FXOP Network Interface Module. This module is designed to expand the voice and data capabilities of compatible Cisco routers, offering 2-Port Foreign Exchange Station (FXS) and 4-Port Foreign Exchange Office (FXO) interfaces.
Producte acabatview
The Cisco NIM-2FXS/4FXOP is a versatile network interface module that integrates voice and data services. It provides connectivity for analog telephones (FXS) and connects to the public switched telephone network (PSTN) or private branch exchange (PBX) lines (FXO).

Figura 1: Frontal view of the Cisco NIM-2FXS/4FXOP Network Interface Module, showing the two FXS ports on the left and four FXO ports on the right, along with status indicators and mounting screws.
Característiques principals:
- 2 Foreign Exchange Station (FXS) ports for analog phone connectivity.
- 4 Foreign Exchange Office (FXO) ports for PSTN/PBX connectivity.
- Modular design for easy installation into compatible Cisco routers.
- Supports voice and data integration.
- Designed for reliable performance in network environments.
Configuració i instal·lació
Before installing the NIM-2FXS/4FXOP module, ensure the host router is powered off and disconnected from all power sources. Refer to your router's documentation for specific slot compatibility and installation procedures.
- Power Off Router: Safely shut down and disconnect the power cable from the host Cisco router.
- Locate NIM Slot: Identify an available Network Interface Module (NIM) slot on your router.
- Remove Blank Panel (if applicable): If a blank panel covers the slot, remove it by unscrewing the retaining screws.
- Insereix el mòdul: Carefully align the NIM-2FXS/4FXOP module with the slot and slide it in until it is fully seated. Apply firm, even pressure.
- Mòdul segur: Tighten the retaining screws on the module's faceplate to secure it in place.
- Torneu a connectar l'alimentació: Reconnect the power cable to the router and power it on.
- Verifica la instal·lació: Once the router boots, verify the module's status through the router's command-line interface (CLI) or management interface.
Nota: Always handle the module by its edges to avoid touching sensitive components. Electrostatic discharge (ESD) precautions should be observed during installation.
Instruccions de funcionament
After successful installation, the NIM-2FXS/4FXOP module requires configuration within the Cisco IOS operating system. This typically involves configuring the voice ports (FXS and FXO) for dial-peers, voice-ports, and associated telephony services.
Basic Configuration Steps (Conceptual):
- Access the router's CLI via console, Telnet, or SSH.
- Introduïu el mode de configuració global.
- Configure the voice-port for each FXS and FXO interface, specifying parameters like caller ID, impedance, and gain.
- Define dial-peers to route calls to and from the FXS/FXO ports.
- Desa la configuració.
For detailed configuration commands and examples, refer to the official Cisco documentation for your specific router model and IOS version. This manual focuses on the physical aspects and general functionality of the module.
Manteniment
The Cisco NIM-2FXS/4FXOP module is designed for minimal maintenance. Regular maintenance primarily involves ensuring proper environmental conditions and periodic software updates for the host router.
- Control ambiental: Ensure the operating environment of the router and module is within specified temperature and humidity ranges to prevent overheating or moisture damage.
- Eliminació de pols: Periodically inspect the router chassis and module for dust accumulation. If necessary, use compressed air to gently clean vents and surfaces, ensuring the router is powered off during cleaning.
- Firmware/IOS Updates: Keep the host router's Cisco IOS software updated to the latest stable version. This ensures compatibility, security patches, and optimal performance for the installed modules.
- Gestió de cables: Ensure all connected cables (telephone lines, network cables) are securely connected and not under strain.
Resolució de problemes
If you encounter issues with your NIM-2FXS/4FXOP module, consider the following troubleshooting steps:
| Problema | Causa possible | Solució |
|---|---|---|
| Module not detected by router. | Module not fully seated; incompatible IOS version; faulty slot. | Reseat the module; verify IOS compatibility; try a different slot if available. |
| FXS/FXO ports not registering or making calls. | Incorrect configuration; cable issues; line problems. | Review voice-port and dial-peer configurations; check cable connections; test the analog lines independently. |
| Poor voice quality. | Impedance mismatch; network congestion; faulty cabling. | Adjust impedance settings in configuration; check network bandwidth; replace cables. |
| Module status LED is off or amber. | Module error; power issue. | Consult Cisco documentation for LED codes; power cycle the router; reseat the module. |
If problems persist, gather diagnostic information (e.g., show version, show voice port summary, show dial-peer voice) and contact Cisco technical support or your network administrator.
Especificacions
| Atribut | Detall |
|---|---|
| Número de model | NIM-2FXS/4FXOP |
| Tipus de producte | Network Interface Module (NIM) |
| Ports | 2 x FXS (Foreign Exchange Station), 4 x FXO (Foreign Exchange Office) |
| Tipus d'interfície | RJ-11 (for FXS/FXO) |
| Compatibilitat | Compatible with select Cisco Integrated Services Routers (ISRs) that support NIM slots. Refer to Cisco documentation for specific router models. |
| Dimensions (aprox.) | 3.7L x 3.1W x 2.9H inches (Item Package Dimension) |
| Pes (aprox.) | 0.52 lbs (Item Package Weight) |
| Fabricant | Cisco Systems, Inc. |
Garantia i Suport
This Cisco NIM-2FXS/4FXOP module, being a renewed product, typically comes with a specific warranty provided by the seller (e.g., Amazon Renewed). Please refer to your purchase documentation for the exact warranty period and terms.
- Política de devolució: As per the product listing, a 90-day refund/replacement policy may apply. Verify this with your specific purchase details.
- Suport tècnic: For technical issues related to the module's functionality or configuration, it is recommended to consult Cisco's official support resources, documentation, and community forums. For issues related to the renewed product's condition or initial functionality, contact the seller or Amazon Renewed support.
- Recursos en línia:
- Suport de Cisco: www.cisco.com/c/en/us/support/index.html
- Amazon Renewed Support: Refer to your Amazon order history for specific support options.





