HWIC-1DSU-56K4 | Cisco 1-Port 4-Wire 56/64kbps CSU/DSU WAN Interface Card
HWIC-1DSU-56K4 | Cisco 1-Port 4-Wire 56/64kbps CSU/DSU WAN Interface Card
HWIC-1DSU-56K4 | Cisco 1-Port 4-Wire 56/64kbps CSU/DSU WAN Interface Card
    HWIC-1DSU-56K4 | Cisco 1-Port 4-Wire 56/64kbps CSU/DSU WAN Interface Card
HWIC-1DSU-56K4 | Cisco 1-Port 4-Wire 56/64kbps CSU/DSU WAN Interface Card

HWIC-1DSU-56K4 | Cisco 1-Port 4-Wire 56/64kbps CSU/DSU WAN Interface Card

Part #: HWIC-1DSU-56K4 Manufactured by: Cisco
Regular price
$567.00
Sale price
$567.00
Regular price
1 in Stock
Condition: New-Surplus Original Box
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Product Overview
The Cisco HWIC-1DSU-56K4 is a single-port WAN interface card that supports 4-wire 56/64 kbps CSU/DSU functions.
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Product Description P/N: HWIC-1DSU-56K4

Description / Specifications

Description 

The Cisco HWIC-1DSU-56K4 is a 1-port 4-wire CSU/DSU WAN interface card that provides synchronous serial connectivity at 56 or 64 kbps. It performs both Channel Service Unit (CSU) and Data Service Unit (DSU) functions and supports dedicated point-to-point and switched digital data services over serial networks.

 

 

Technical Specifications 

Condition New/Never Used Surplus
Brand Cisco
Category
Network Interface Modules
Part Number HWIC-1DSU-56K4
Subcategory Serial WAN Interface Cards
Interface Type 4-Wire CSU/DSU
Port Count 1 Port
Connector Type RJ-48S
Data Rate 56 or 64 kbps
Network Technology Synchronous Serial
Supported Protocols AT&T Accunet 56, Sprint VPN-56, DDS
Compatible Platforms Cisco 1900 and 2900 Series ISRs
Applications Dedicated or switched WAN access via DDS or 4-wire networks
Form Factor High-Speed WAN Interface Card (HWIC)
Weight 204 g

  

 

Information About HWIC-1DSU-56K4

The HWIC-1DSU-56K4 interface card is designed for Cisco Integrated Services Routers (ISRs), such as the 1900 and 2900 series. This module provides a single RJ-48S synchronous serial port and integrates CSU/DSU functionality into a single WAN interface card. It supports 4-wire 56K and 64Kbps digital lines compatible with a range of carrier services, including AT&T’s Accunet 56, Sprint’s VPN-56, and other DDS offerings conforming to AT&T Publication 62310. The card is ideal for enterprises or branch offices that require reliable, low-speed WAN connectivity to support legacy systems, private networks, or secure dial-in access. With seamless integration into Cisco’s IOS-based platforms, this HWIC offers stable and consistent WAN performance.

Key Features:

  • Integrated CSU/DSU: Combines both CSU and DSU functions for simplified WAN connectivity.
  • Supports 56K and 64K Services: Compatible with switched and dedicated 4-wire digital networks.
  • Standards-Based: Works with services following AT&T Publication 62310 for point-to-point or multipoint topologies.
  • Single RJ-48S Port: Uses a standard RJ-48S connector for straightforward cabling with telco circuits.
  • Synchronous Serial Support: Provides a synchronous interface for reliable timing and stable connections.
  • Compatibility with Cisco ISRs: Designed to work seamlessly with Cisco 1900 and 2900 Series routers.
  • Low-Speed WAN Option: Ideal for locations with basic WAN needs or legacy infrastructure.
  • Flexible Application Use: Supports both dedicated DDS and switched data service configurations.
  • Carrier-Grade Interoperability: Compatible with AT&T Accunet 56, Sprint VPN-56, and other telecom data services.
  • Compact HWIC Form Factor: Easy to install in high-density router configurations without additional rack space.

The HWIC-1DSU-56K4 offers a compact and reliable solution for organizations seeking cost-effective serial WAN connectivity through legacy DDS and 4-wire digital networks.

IQElectro is not an authorized distributor.
IQElectro LLC (IQElectro) is NOT an Authorized Distributor or in any way affiliated with Rockwell Automation, Siemens, or any other Manufacturers. IQElectro is NOT an Authorized Dealer of this product. The product may be of older version, date codes, or design than that available from authorized dealers. As IQElectro is not an authorized dealer of this product, the Original Manufacturer's Warranty and Support DO NOT apply. IQElectro sells SURPLUS only and DOES NOT SELL SOFTWARE or FIRMWARE licenses For more detailed information, please refer to the full version of our disclaimer policy Disclaimer Policy.
Description / Specifications

Description 

The Cisco HWIC-1DSU-56K4 is a 1-port 4-wire CSU/DSU WAN interface card that provides synchronous serial connectivity at 56 or 64 kbps. It performs both Channel Service Unit (CSU) and Data Service Unit (DSU) functions and supports dedicated point-to-point and switched digital data services over serial networks.

 

 

Technical Specifications 

Condition New/Never Used Surplus
Brand Cisco
Category
Network Interface Modules
Part Number HWIC-1DSU-56K4
Subcategory Serial WAN Interface Cards
Interface Type 4-Wire CSU/DSU
Port Count 1 Port
Connector Type RJ-48S
Data Rate 56 or 64 kbps
Network Technology Synchronous Serial
Supported Protocols AT&T Accunet 56, Sprint VPN-56, DDS
Compatible Platforms Cisco 1900 and 2900 Series ISRs
Applications Dedicated or switched WAN access via DDS or 4-wire networks
Form Factor High-Speed WAN Interface Card (HWIC)
Weight 204 g

  

 

Information About HWIC-1DSU-56K4

The HWIC-1DSU-56K4 interface card is designed for Cisco Integrated Services Routers (ISRs), such as the 1900 and 2900 series. This module provides a single RJ-48S synchronous serial port and integrates CSU/DSU functionality into a single WAN interface card. It supports 4-wire 56K and 64Kbps digital lines compatible with a range of carrier services, including AT&T’s Accunet 56, Sprint’s VPN-56, and other DDS offerings conforming to AT&T Publication 62310. The card is ideal for enterprises or branch offices that require reliable, low-speed WAN connectivity to support legacy systems, private networks, or secure dial-in access. With seamless integration into Cisco’s IOS-based platforms, this HWIC offers stable and consistent WAN performance.

Key Features:

  • Integrated CSU/DSU: Combines both CSU and DSU functions for simplified WAN connectivity.
  • Supports 56K and 64K Services: Compatible with switched and dedicated 4-wire digital networks.
  • Standards-Based: Works with services following AT&T Publication 62310 for point-to-point or multipoint topologies.
  • Single RJ-48S Port: Uses a standard RJ-48S connector for straightforward cabling with telco circuits.
  • Synchronous Serial Support: Provides a synchronous interface for reliable timing and stable connections.
  • Compatibility with Cisco ISRs: Designed to work seamlessly with Cisco 1900 and 2900 Series routers.
  • Low-Speed WAN Option: Ideal for locations with basic WAN needs or legacy infrastructure.
  • Flexible Application Use: Supports both dedicated DDS and switched data service configurations.
  • Carrier-Grade Interoperability: Compatible with AT&T Accunet 56, Sprint VPN-56, and other telecom data services.
  • Compact HWIC Form Factor: Easy to install in high-density router configurations without additional rack space.

The HWIC-1DSU-56K4 offers a compact and reliable solution for organizations seeking cost-effective serial WAN connectivity through legacy DDS and 4-wire digital networks.

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