HWIC-1DSU-T1 Cisco 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 1 Port Interface Card

The Cisco HWIC-1DSU-T1 Ethernet One-Port WAN Interface Card is a crucial networking component designed to enhance connectivity in a variety of networking environments. This Interface 1 Port Card plays a key role in facilitating wide area network (WAN) connections, making it an integral part of Cisco's networking solutions. In this detailed exploration, we will delve into the various aspects of the Cisco HWIC-1DSU-T1, including its specifications, features, and applications.

Cisco HWIC-1DSU-T1

The Cisco HWIC-1DSU-T1 is a WAN Interface Card that belongs to the High-Speed WAN Interface Card (HWIC) family. As the name suggests, it is equipped with one port, specifically tailored for T1/FT1 WAN connections. This makes it a versatile solution for organizations seeking reliable and high-performance connectivity in their networks.

Physical Specifications

Total Number of Ports: 1

A standout feature of the Cisco HWIC-1DSU-T1 is its one-port configuration. This singular port is dedicated to establishing WAN connections, making it a valuable asset for organizations seeking reliable and secure networking solutions. The emphasis on a single port ensures focused functionality, simplifying deployment and management processes.

Connector Type: RJ-48

The connector type employed by the Cisco HWIC-1DSU-T1 is RJ-48. This standardized connector is commonly used in networking applications, known for its reliability and compatibility. The choice of RJ-48 reinforces the interoperability of the interface card, allowing it to seamlessly integrate into various networking environments.

Interface Details: 1 x RJ-48 T1/FT1 WAN

The interface details of the Cisco HWIC-1DSU-T1 further illuminate its capabilities. The "1 x RJ-48 T1/FT1 WAN" specification signifies that the interface card is specifically tailored for T1 and fractional T1 WAN connections. T1, short for T-carrier Level 1, is a digital communication line with a data rate of 1.544 Mbps. This standardized interface ensures compatibility with T1 networks, making it suitable for a broad range of networking scenarios.

Key Features

High-Speed Connectivity

The HWIC-1DSU-T1 is designed to deliver high-speed connectivity, making it an ideal choice for organizations with demanding networking requirements. The T1/FT1 WAN interface ensures efficient data transfer, reducing latency and enhancing overall network performance.

Reliable RJ-48 Connector

The integration of the RJ-48 connector enhances the reliability of the interface. This connector type is known for its secure and stable connections, minimizing the risk of signal interference or disconnections. The emphasis on reliability is crucial in mission-critical applications where uninterrupted connectivity is paramount.

Versatility in Deployment

The versatility of the interface card is underscored by its compatibility with both T1 and fractional T1 connections. This adaptability ensures that the Cisco HWIC-1DSU-T1 can be deployed in diverse networking environments, catering to the specific needs of different organizations.

Scalability and Versatility

Cisco's HWIC-1DSU-T1 offers scalability, allowing organizations to expand their network infrastructure as needed. The one-port design provides a balance between versatility and focused functionality, making it suitable for a range of networking scenarios.

Compatibility with T1 and FT1 Protocols

The interface's compatibility with T1 and FT1 protocols extends its utility across diverse networking environments. This ensures that the HWIC-1DSU-T1 can seamlessly integrate into existing networks or be deployed in new setups requiring T1/FT1 WAN connectivity.

Secure WAN Connectivity

Security is paramount in networking, and the Cisco HWIC-1DSU-T1 is designed with this in mind. The interface card provides a secure WAN connection, employing encryption and other security measures to safeguard data during transmission.

Plug-and-Play Integration

The plug-and-play nature of the Cisco HWIC-1DSU-T1 simplifies the integration process. This user-friendly feature reduces the complexity of setup, allowing organizations to swiftly incorporate the interface card into their existing network infrastructure.


As businesses grow, so do their networking needs. The Cisco HWIC-1DSU-T1 offers scalability, adapting to the evolving requirements of an organization. This scalability ensures that the interface card remains a viable and cost-effective solution in the long run

Applications and Use Cases

Enterprise Networking

The Cisco HWIC-1DSU-T1 is well-suited for enterprise networking environments where high-speed and reliable connectivity is essential. Its scalability makes it adaptable to the evolving needs of large organizations with complex networking infrastructures.

Telecommunication Networks

Telecommunication networks often rely on T1/FT1 protocols for efficient data transmission. The HWIC-1DSU-T1, with its dedicated T1/FT1 WAN interface, is a valuable component in telecommunication setups, ensuring stable and high-performance connections.

Remote Office Connectivity

Organizations with remote offices or branches benefit from the HWIC-1DSU-T1's ability to provide dedicated WAN connectivity. This is particularly valuable for maintaining seamless communication between central offices and remote locations.

Critical Infrastructure

In scenarios where uninterrupted connectivity is critical, such as in critical infrastructure systems (e.g., power grids, and water treatment plants), the reliability and high-speed capabilities of the HWIC-1DSU-T1 make it an ideal choice.

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 summary, the Cisco HWIC-1DSU-T1 Ethernet One-Port WAN Interface Card is a key component in Cisco's extensive portfolio of networking solutions, embodying the company's commitment to excellence in connectivity. Its specifications, features, and applications make it a versatile and valuable asset for organizations looking to optimize their WAN connectivity for enhanced performance and reliability.

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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