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Black Cisco network module with two FXO ports

Cisco Systems, Inc.

Cisco Systems, Inc. NIM-2FXO= 2 Port FXO Interface Module

SKU CH-W31E-EJDJF MPN NIM-2FXO=

Adds two FXO ports for voice connectivity to a Cisco 4451-X Integrated Services Router

  • TypeWireless Module
  • ColorBlack
  • FeaturesCisco Fourth-Generation Voice & Fax Network Interface Module
  • Adds two analogue trunk connections for voice services
  • Supports fax and Unified Communications on the router
  • Designed for the Cisco 4451-X Integrated Services Router
  • Fourth-generation Cisco voice interface module technology
  • Compact black module installs in a network interface slot

Voice interface module for Cisco 4451-X router

The Cisco NIM-2FXO= adds two FXO ports to a Cisco 4451-X Integrated Services Router. It enables connection to analogue telephone lines or PSTN trunks for voice and fax services. The module is designed for small-business Unified Communications deployments. It installs in a supported network interface module slot on the router.

Two FXO ports limit analogue trunk capacity

Each module provides exactly two FXO interfaces, so the number of simultaneous analogue calls is capped at two per module. Additional analogue trunks require extra modules and available NIM slots on the router. The interface does not support digital PRI, BRI or SIP trunks directly. Bandwidth and call processing depend on the host router resources.

Verify router model and free NIM slot before

Confirm the host is a Cisco 4451-X Integrated Services Router with an open NIM slot. Check that the router IOS version supports fourth-generation voice NIMs. Ensure the deployment plan accounts for only two analogue ports per module. No other router models or interface types are compatible with this module.

Highlights

  • Adds two analogue trunk connections for voice services
  • Supports fax and Unified Communications on the router
  • Designed for the Cisco 4451-X Integrated Services Router
  • Fourth-generation Cisco voice interface module technology
  • Compact black module installs in a network interface slot

Specifications

BrandCisco Small Business
ModelNIM-2FXO=
TypeWireless Module
ColorBlack
FeaturesCisco Fourth-Generation Voice & Fax Network Interface Modules provide voice and Unified Communications services on the Cisco Integrated Services Router
Shipping weight2.46 kg
Package size297 × 177 × 113 mm

Questions about this item

Should I choose the 2-port FXO module or a different port count for my Cisco 4451-X router?

This module provides exactly two FXO ports for connecting analogue telephone lines to the Cisco 4451-X Integrated Services Router.

What does the 2-port FXO specification deliver when installed in a Cisco 4451-X router?

It adds two analogue trunk interfaces so the router can terminate PSTN lines for voice and fax services.

Which interface standard does the NIM-2FXO= use and what does it limit in practice?

The module plugs into a Network Interface Module slot on the Cisco 4451-X and supports two simultaneous FXO connections.

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