VIC2-4FXO Cisco Voice Interface Card
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Cisco VIC2-4FXO 4 Ports Voice Interface Card Refurbished

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Part Number#: VIC2-4FXO
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Short Description:
VIC2-4FXO IP Unified Communications Voice/Fax Network Module 4 Ports Voice Interface Card FXO Universal | Made by Cisco | Refurbished
Product Condition:
Warranty provided by ALLHDD.COM:
90 Days

Product Details of the Cisco Voice Interface Card

The Cisco VIC2-4FXO is a crucial component in the world of networking and telecommunications, specifically designed to enhance voice communication capabilities. In this comprehensive guide, we will delve into the key aspects of the Cisco VIC2-4FXO 4 Ports Card, exploring its features, functionality, installation process, and potential applications. Whether you are a networking professional, a business owner, or someone curious about telecommunications technology, this guide aims to provide a clear understanding of this essential piece of hardware.

Understanding the Basics

Before we delve into the specifics, let's establish a foundational understanding of what the Cisco VIC2-4FXO is and what it is designed to accomplish. The "VIC2" in its name stands for Voice Card, second generation," emphasizing its role in facilitating voice communication within a network.

Purpose and Functionality

The primary purpose of the Cisco VIC2-4FXO is to enable the integration of voice and data services within a network infrastructure. It achieves this by providing four Foreign Exchange Office (FXO) ports, which serve as interfaces between the telephony network and the router or switch. These FXO ports are essential for connecting the network to the Public Switched Telephone Network (PSTN), allowing businesses and organizations to establish reliable voice communication channels.

FXO Ports Explained

Each of the four FXO ports on the Cisco VIC2-4FXO serves as a gateway between the internal telephony system and the external PSTN. FXO ports are used to connect the router or switch to analog phone lines, enabling the transmission of voice signals between the internal network and external phone lines. This is a critical function for businesses that rely on traditional phone services and need to integrate them into their modern network infrastructure.

Features of Cisco VIC2-4FXO

Now that we have a basic understanding of its purpose, let's explore the key features that make the Cisco VIC2-4FXO a valuable asset in the realm of networking and telecommunications.

Four FXO Ports

The most prominent feature of the Cisco VIC2-4FXO is its provision of four FXO ports. This abundance of ports allows for increased flexibility in establishing connections with analog phone lines, making it suitable for businesses with varying communication needs.

Analog Connectivity

Analog phone lines remain prevalent in many regions and industries. The Cisco VIC2-4FXO's compatibility with analog systems ensures that businesses can seamlessly integrate their existing telephony infrastructure with modern network solutions.

Voice Quality and Reliability

Cisco is renowned for its commitment to delivering high-quality voice communication solutions. The Cisco VIC2-4FXO upholds this reputation by providing excellent voice quality and reliable connectivity, ensuring that users experience clear and uninterrupted communication.

Applications and Use Cases

The Cisco VIC2-4FXO finds application in a variety of scenarios, catering to the diverse needs of businesses and organizations. Let's explore some common use cases where this 4-port voice interface card proves invaluable.

Small to Medium-Sized Businesses (SMBs)

For SMBs with moderate telephony requirements, the Cisco VIC2-4FXO provides a cost-effective solution for integrating analog phone lines into their network. This is particularly beneficial for businesses that have not fully transitioned to Voice over Internet Protocol (VoIP) and still rely on traditional phone services.

Branch Offices

Large enterprises with branch offices often require reliable communication links between locations. The Cisco VIC2-4FXO facilitates seamless connectivity between branch offices and the main corporate network, allowing for efficient inter-office communication.

Legacy System Integration

Many organizations still operate legacy telephony systems based on analog technology. The Cisco VIC2-4FXO serves as a bridge between these legacy systems and modern network infrastructure, enabling a phased transition to more advanced communication technologies.

Redundancy and Failover

In mission-critical environments where uninterrupted communication is paramount, the Cisco VIC2-4FXO can be configured to provide redundancy and failover capabilities. This ensures that even in the event of a network failure or equipment malfunction, communication channels remain operational.

Security Considerations

As with any networking component, security is a critical aspect of implementing the Cisco VIC2-4FXO. Ensuring the confidentiality, integrity, and availability of voice communication is essential to safeguarding sensitive information and maintaining operational continuity.

Encryption and Secure Protocols

Implementing encryption and secure signaling protocols is essential to protect voice traffic transmitted over the network. The use of protocols such as Secure Real-time Transport Protocol (SRTP) can enhance the security of voice communication channels.

Access Control and Authentication

Configuring access control lists (ACLs) and implementing strong authentication measures help prevent unauthorized access to the Cisco VIC2-4FXO and the associated network infrastructure. Restricting access to only authorized personnel enhances overall network security.

Regular Software Updates

Staying vigilant about software updates and security patches is crucial in mitigating potential vulnerabilities. Cisco regularly releases updates to address security concerns, and keeping the firmware and software up to date is an integral part of a robust security posture.

General Information about the Cisco VIC2-4FXO

Technical Details

  • Product Name: Four-Port VIC Voice Interface Card (VIC)
  • Application/Usage: Voice
  • Interfaces/Ports: 4 x FXO WAN
  • Interfaces/Ports Details: 4 x RJ-11 FXO WAN

System Requirements

  • Cisco 3745: 12.2(15)ZJ
  • Cisco 3725: 12.2(15)ZJ
  • Cisco 3660 series: 12.2(15)ZJ
  • Cisco 2691: 12.2(15)ZJ
  • Cisco 2600XM Series: 12.2(15)ZJ
  • Cisco 1760: 12.2(15)ZL
  • Cisco 1751: 12.2(15)ZL


  • NM-HD-1V Network Module
  • NM-HD-2V Network Module
  • NM-HD-2VE Network Module

In summary, the Cisco VIC2-4FXO 4 Ports Voice Interface Card stands as a testament to Cisco's commitment to delivering versatile and reliable networking solutions. Its four FXO ports, analog connectivity, and robust features make it a valuable asset for businesses looking to integrate voice communication seamlessly into their network infrastructure. Through a comprehensive understanding of its purpose, features, installation process, applications, and security considerations, networking professionals and enthusiasts can harness the full potential of the Cisco VIC2-4FXO to meet the evolving demands of modern communication. Whether used in small to medium-sized businesses, branch offices, or as part of a legacy system integration strategy, this 4-port voice interface card continues to play a pivotal role in shaping the landscape of telecommunications technology.

Product Condition:
Warranty provided by ALLHDD.COM:
90 Days

About Refurbished Products

Refurbished products are typically refurbished by an Original Manufacturer or an affiliate of the manufacturer or 3rd party facility. This product may have minor blemishes due to normal product usage and doesn't necessarily come with documentation and software unless indicated, but has been well tested and generally has never had any defects.

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