Cisco WIC-1DSU-T1 1-Port T1 DSU/CSU WAN Interface Card

BRAND NEW. FACTORY SEALED. FULL CISCO WARRANTY INCLUDED. MANUFACTURED BY CISCO. FROM CHICAGO COMPUTER SUPPLY

Overview

The Cisco WIC-1DSU-T1 is a one-port WAN interface card that provides reliable T1 and fractional T1 connectivity for Cisco routers. It integrates a fully managed CSU/DSU directly into the card, eliminating the need for external hardware and simplifying WAN deployment and management.

This module enables organizations to extend WAN connectivity while maintaining precise control over bandwidth allocation. With support for fractional T1 configurations, businesses can scale bandwidth efficiently based on operational requirements. It best fits in enterprise branch offices and legacy WAN environments that rely on dedicated T1 circuits.

Key Features

• Single-port T1 and Fractional T1 WAN interface
• Integrated CSU/DSU eliminates external hardware requirements
• Supports scalable bandwidth using fractional T1 configurations
• Fully managed interface with advanced monitoring capabilities
• Standards-based WAN connectivity for reliable operation
• Seamless integration with Cisco Integrated Services Routers

Technical Specifications

Manufacturer: Cisco
Model: WIC-1DSU-T1
Device Type: WAN Interface Card
Interface: 1 × T1 / Fractional T1 WAN
Integrated Functions: CSU/DSU
Bandwidth Support: N × 64 kbps or N × 56 kbps (1 to 24 channels)
Form Factor: Plug-in Module
Standards Compliance: ANSI T1.403, AT&T Publication 62411
UPC: 00746320081977

Use Cases

The Cisco WIC-1DSU-T1 is well-suited for branch offices and enterprise networks that rely on dedicated T1 lines for stable, predictable WAN connectivity. It supports fractional T1 deployments, enabling organizations to optimize bandwidth costs while maintaining reliable communication between remote offices and central data centres. Network administrators also deploy this module in legacy WAN infrastructures, managed network environments, and mission-critical systems where consistent uptime, precise bandwidth allocation, and integrated WAN management are essential.

Why Choose Cisco WIC-1DSU-T1 

• Integrated CSU/DSU simplifies WAN deployment and management
• Supports scalable fractional T1 bandwidth configurations
• Reduces hardware footprint and maintenance complexity
• Reliable connectivity for branch and enterprise networks
• Cisco genuine hardware with enterprise-grade reliability

FAQs

What does the WIC-1DSU-T1 module do?

It provides T1 or fractional T1 WAN connectivity with an integrated CSU/DSU for Cisco routers.

Do I need an external CSU/DSU with this card?

No. The CSU/DSU comes with the module, simplifying installation and management.

Does this module support fractional T1 bandwidth?

Yes. It supports fractional T1 configurations using selectable channel bandwidth.

Which routers support the WIC-1DSU-T1?

It is compatible with multiple Cisco router platforms, including 1600, 1700, 2600, 3600, and 3700 series routers.

Is this a genuine Cisco product?

Yes. It is genuine Cisco hardware, factory-sealed, and backed by a full Cisco warranty from Chicago Computer Supply.