Cisco Fourth-Generation Voice/Fax Network Interface Module NIM-2FXO

BRAND NEW. FACTORY SEALED. FULL CISCO WARRANTY INCLUDED. MANUFACTURED BY CISCO. FROM CHICAGO COMPUTER SUPPLY.

Overview

The Cisco NIM-2FXO is a fourth-generation voice and fax Network Interface Module designed for Cisco Integrated Services Routers. It provides two FXO ports that connect directly to PSTN lines or PBX systems, enabling seamless integration between traditional telephony and modern IP-based networks.

This module includes an onboard digital signal processor, eliminating the need for a separate PVDM on the router. It delivers stable voice performance with built-in echo cancellation, making it suitable for enterprise voice deployments that rely on analog trunk connections.

Key Features

• Two FXO ports for PSTN or PBX connectivity
• Built-in DSP with no external PVDM required
• Supports analog voice and fax applications
• Echo cancellation up to 128 ms
• Designed for fourth-generation Cisco routers
• Genuine Cisco hardware with full warranty

Technical Specifications

Manufacturer: Cisco

Product Type: Voice / Fax Network Interface Module

Model: NIM-2FXO

Interfaces: 2 x FXO

Form Factor: Plug-in module

DSP: Integrated

Echo Cancellation: Up to 128 ms

Compatibility: Cisco Integrated Services Router 4331, 4351

UPC: 00882658634536

Use Cases

The NIM-2FXO is ideal for enterprises that need to connect legacy PSTN lines or PBX systems to Cisco routers. It supports hybrid voice environments where analog trunks remain critical during the transition to IP-based communications.

Why Choose the NIM-2FXO

• Enables smooth PSTN and PBX integration
• Reduces hardware dependency with built-in DSP
• Supports reliable voice and fax transmission
• Designed for demanding enterprise voice networks
• Backed by Cisco manufacturing standards

FAQs

What does the Cisco NIM-2FXO do?

It connects analog PSTN or PBX lines to supported Cisco routers using FXO ports.

How many PSTN lines can this module support?

It supports up to two analog lines, one per FXO port.

Is a separate PVDM required for this module?

No. The NIM-2FXO includes an onboard digital signal processor.

Which routers support the NIM-2FXO?

It is compatible with Cisco Integrated Services Router models 4331 and 4351.

Is this product new and covered by warranty?

Yes. It is brand new, factory sealed, and includes the full Cisco warranty.