Cisco 4th Gen E&M Voice Network Interface Module NIM-4E/M

REFURBISHED. TESTED. 90-DAY CCS WARRANTY INCLUDED. MANUFACTURED BY CISCO. FROM CHICAGO COMPUTER SUPPLY.

Overview

The Cisco NIM-4E/M is a fourth-generation analog voice Network Interface Module designed for Cisco 4000 Series Integrated Services Routers. It provides four E&M ports to support tie-line connections and signaling between telephone switches and PBX systems.

This module bridges legacy analog voice infrastructure with modern VoIP networks. With a built-in digital signal processor, it eliminates the need for an external PVDM on the router motherboard while delivering reliable voice performance in demanding environments.

Key Features

• Four E&M ports for tie-line and PBX connectivity
• Designed for Cisco 4000 Series Integrated Services Routers
• Built-in DSP removes the need for a separate PVDM
• Supports legacy analog voice integration with VoIP
• Echo cancellation up to 128 ms for clear voice quality
• Refurbished and tested for dependable operation

Technical Specifications

Manufacturer: Cisco

Product Type: Network Interface Module

Model: NIM-4E/M

Ports: 4 x E&M

Applications: Analog voice and VoIP integration

Form Factor: Plug-in module

DSP: Integrated

Echo Cancellation: Up to 128 ms

Condition: Refurbished

Warranty: 90-day CCS warranty

Use Cases

The NIM-4E/M is ideal for enterprises and service providers that rely on E&M signaling between PBX systems and routers. It is best for hybrid voice environments where legacy telephony must coexist with IP-based voice networks, especially in large branch offices and campus deployments.

Why Choose the NIM-4E/M

• Seamlessly connects legacy E&M voice systems to VoIP
• Built-in DSP reduces hardware complexity
• Reliable echo cancellation for demanding voice conditions
• Cost-effective refurbished option
• Backed by a 90-day CCS warranty

FAQs

What is the Cisco NIM-4E/M used for?

It connects Cisco 4000 Series routers to PBX systems using E&M tie-line signaling.

What does E&M signaling support?

E&M supports analog tie-line connections between telephone switches and PBXs.

Does this module require a PVDM?

No. The NIM-4E/M includes a built-in DSP and does not require a separate PVDM.

Is this product new or refurbished?

This unit is refurbished, fully tested, and backed by a 90-day CCS warranty.

Which routers are compatible with this module?

It is compatible with Cisco 4451-X Integrated Services Routers and related bundles.