Cisco HWIC-1DSU-T1= One Port Interface Card
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Cisco HWIC-1DSU-T1= Wan Interface Card Ethernet One-Port Refurbished

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Part Number#: HWIC-1DSU-T1=
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Short Description:
HWIC-1DSU-T1= One-Port T1 Fractional Data Service Unit/Channel Service Unit (DSU/CSU) Wide Area Network (WAN) Wan High-Speed Ethernet Interface Card | Made by Cisco | Refurbished
Product Condition:
Warranty provided by ALLHDD.COM:
90 Days

Product Details of the Cisco Wan Interface Card

In the ever-evolving landscape of networking technology, Cisco has consistently stood at the forefront, delivering cutting-edge solutions to meet the demands of modern connectivity. One such innovation is the Cisco HWIC-1DSU-T1= Wan Ethernet One-Port Interface Card. In this comprehensive guide, we will delve into the intricacies of this remarkable piece of hardware, exploring its features, benefits, and applications.

Introduction to Cisco HWIC-1DSU-T1=

Understanding Interface Cards

Interface cards play a pivotal role in networking by enabling devices to connect and communicate seamlessly. The Cisco HWIC-1DSU-T1= belongs to the High-Speed WAN Interface Card (HWIC) family, designed to enhance the capabilities of Cisco routers. This particular model, the HWIC-1DSU-T1=, focuses on Wide Area Network (WAN) connectivity and Ethernet integration.

Key Features

WAN Connectivity

At the heart of the HWIC-1DSU-T1= lies its ability to establish WAN connections. This is especially crucial for businesses and organizations requiring reliable and high-speed connections over large geographical distances. The T1 designation indicates compatibility with T1 lines, a common digital communication method.

Ethernet Integration

In the era of digital transformation, Ethernet has become the standard for local area networking. The HWIC-1DSU-T1= facilitates seamless integration with Ethernet networks, ensuring compatibility with modern networking infrastructure.

One-Port Design

Simplicity and efficiency are hallmarks of the HWIC-1DSU-T1=. With its one-port design, the card streamlines connectivity processes, making it a user-friendly option for both novice and experienced network administrators.


Versatility is a key attribute of the HWIC-1DSU-T1=. Its compatibility with various Cisco routers enhances its adaptability to different network environments, making it a versatile choice for a wide range of applications.

Applications and Use Cases

Enterprise Networking

Large enterprises with geographically dispersed offices often require robust WAN connectivity. The HWIC-1DSU-T1= proves invaluable in such scenarios, providing a reliable and high-performance solution for interconnecting offices and ensuring seamless communication.

Internet Service Providers (ISPs)

Internet Service Providers play a crucial role in delivering connectivity to end-users. The HWIC-1DSU-T1= can be a go-to choice for ISPs looking to expand and improve their network infrastructure, offering T1 connectivity and Ethernet integration in a single card.

Telecommunication Networks

Telecommunication networks demand high-speed and dependable connections for transmitting voice and data. The HWIC-1DSU-T1= excels in such environments, providing the necessary features to support the critical communication needs of telecommunication networks.

Comparison with Alternatives

HWIC-1DSU-T1= vs. HWIC-1DSU-56K4=

While the HWIC-1DSU-T1= is tailored for T1 connections, its counterpart, the HWIC-1DSU-56K4=, is designed for lower-speed connections at 56 Kbps. Choosing between these models depends on the specific bandwidth requirements of the network.


Both the HWIC-1DSU-T1= and VWIC-1MFT-T1= offer T1 connectivity, but the former focuses on Ethernet integration as well. Network architects must consider the network's needs and whether Ethernet compatibility is a critical factor in making an informed decision.

Benefits of Cisco HWIC-1DSU-T1=

The HWIC-1DSU-T1= Ethernet 1 Port Interface Card provides several advantages that contribute to the efficiency and reliability of network operations.

Enhanced Connectivity

The inclusion of an Ethernet port enhances connectivity options, allowing for seamless integration into Ethernet-based networks. This ensures a smooth transition for organizations looking to expand their network capabilities.

Reliable T1/E1 Connectivity

Designed specifically for T1/E1 connections, the HWIC-1DSU-T1= ensures reliable and stable connectivity, making it suitable for applications that demand consistent data transmission.


With support for high-speed data transmission, this interface card offers scalability for growing network requirements. Organizations can easily scale their network infrastructure without compromising performance.

Compatibility Across Cisco Routers

The HWIC-1DSU-T1= is compatible with a range of Cisco routers, providing users with the flexibility to choose routers that best meet their specific needs while still benefiting from the features of this interface card.

General Information about the Cisco HWIC-1DSU-T1=

  • Manufacturer: Cisco
  • Part Number or SKU# HWIC-1DSU-T1=
  • Product Type: Interface Card

Technical Information

  • Application/Usage
  • Designed for Wide Area Network (WAN) applications.


  • Total Number of Ports: 1
  • Connector Type: RJ-48
  • Interface Details: 1 x RJ-48 T1/FT1 WAN

Media & Performance

  • Ethernet Technology: Ethernet
  • Network Technology: T1/FT1
  • Connectivity Media: Copper T1
  • Data Transfer Rate: 1.54 Mbps T1

Modem Information

  • Type: DSU/CSU
  • Enclosure Type: Integrated, Plug-in module
  • Interface Type: HWIC
  • Connectivity Technology: Wired

Protocols & Specifications

  • Form Factor: Internal
  • Bus: HWIC
  • Network Interface Specifications:
  • Transmit Bit Rate: 1.544 Mbps +/- 50 bps
  • Receive Bit Rate: 1.544 Mbps +/- 100 bps
  • Line Code: AMI, B8ZS
  • AMI One's Density

Safety Approvals

  • UL 60950 (United States)
  • CAN/CSA 22.2, CSA60950 (Canada)
  • GB 4943 (China)
  • AS/NZS 60950 (Australia/New Zealand)
  • EN60950 (Europe)
  • IEC 60950 (International)
  • Interfaces: 1 x modem - T1 - RJ-48
  • Compatible Slots: 1 x HWIC
Environmental Parameters
  • Min Operating Temperature: 32 °F
  • Max Operating Temperature: 104 °F
  • Humidity Range Operating: 10 - 85%
Compatibility Information
  • Explore compatibility with various Cisco router models, including but not limited to:
  • Cisco 1841, 1941, 2801, 2821, 2851, 2911, 2921, 2951, 3825, 3845, 3925, 3925E, 3945, 3945E

In short, the Cisco HWIC-1DSU-T1= Wan Ethernet One-Port Interface Card stands as a testament to Cisco's commitment to innovation in networking technology. Its robust features, seamless integration capabilities, and versatile applications make it a valuable asset for enterprises, ISPs, and telecommunication networks. By understanding its key features, applications, installation, and maintenance processes, network administrators can harness the power of the HWIC-1DSU-T1= to build and maintain resilient and high-performance networks in today's dynamic digital landscape.

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.

Here, you can check more available conditions of your desired product HWIC-1DSU-T1= at a competitive price. We are trying our best to meet your needs on the enterprise-level computer, server, data centre, and networking hardware. You are welcome to ask our live chat or get live representative support over the phone.


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ALLHDD guarantees that the products will not have defects in material that will affect the product's functionality during the Standard Warranty Period. The warranty period starts when the merchandise/items from our warehouse.

What does ALLHDD.Com warranty cover?

30-days to 3 years warranty:

Replacement or refund. In the case of material defects, we will try to replace the product first. The product will be replaced before the expiration of the original warranty. For any failure of hardware, if we cannot process the replacement of the product(s)/model(s), we will refund the original selling/invoiced price. The shipping costs and sales tax, if any, are non-refundable. ALLHDD retains the right to decide whether the item(s) will process for replacement or refund.

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(c) damaged caused by other hardware or equipment. The warranty will void if the item is returned with physical damage, damage to the retail box, removed from the box, counterfeit labels/labelled by them, or any modifications of internal and external covers. Data loss or damages to any other equipment we do not cover by our offered warranty.

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