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WIC-1DSU-56K4
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1-port 4-WIRE 56/64 KBPS WAN INTERFACE CARD
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Hand-picked by our procurement team for standout value. This unit is offered at our sharpest price on current stock, verified against live market rates.
Name:
WIC-1DSU-56K4
- Description:
- 1-port 4-WIRE 56/64 KBPS WAN INTERFACE CARD
- Rating:
Added to cart 28 times recently
- Availability:
2 In stock - Ready to Ship
- Brand:
- Cisco
- GTIN:
- 0746320606729
- Condition:
Certified Refurbished
Professionally inspected, bench-tested, and firmware-verified, with configurations wiped. Restored to full working order and backed by our warranty.
- Warranty:
- 3
- List Price:
$700.00
- Price:
$310.0055.7% off
Quantity:
1
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WIC-1DSU-56K4 Overview
WIC-1DSU-56K4 is a dedicated DSU/CSU WAN interface card designed to deliver reliable 56Kbps connectivity for remote and branch office applications. Built in a compact WIC form factor, this module installs directly into compatible Cisco routers to provide seamless DSU functionality for analog WAN access.
Engineered to support industry-standard protocols such as PPP and HDLC, the card features an RJ-11 connector that ensures straightforward integration with traditional analog lines. Its robust design and focused functionality make WIC-1DSU-56K4 an ideal solution for upgrading legacy WAN infrastructures while maintaining dependable network performance.
WIC-1DSU-56K4 price is $310.00, a 55.7% saving from the Cisco list price of $700.00. WIC-1DSU-56K4 is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for WIC-1DSU-56K4 for additional pricing. Browse the full Router Wic Wan Cards series or explore all Cisco products.
WIC-1DSU-56K4 Specifications
- Product Type
- WAN Interface Card
- Brand
- Cisco
- Module Type
- DSU/CSU Module
- Data Rate
- 56Kbps
- Connector Type
- RJ-11
- Supported Protocols
- PPP / HDLC
- Form Factor
- WIC
- Operating Temperature
- 0 to 70°C
- Storage Temperature
- -40 to 85°C
- Input Voltage
- 5V
- Compatibility
- Cisco
- Max Speed
- 56Kbps
- Supported Features
- DSU/CSU functionality
- Interface Ports
- Analog RJ-11
- Expansion Slots
- WIC Slot
- Product Name
- Cisco WIC-1DSU-56K4
WIC-1DSU-56K4 Use Case
Rural Branch Office Dedicated WAN Connectivity
A regional bank deploys the Cisco WIC-1DSU-56K4-1-port 4-WIRE 56/64 KBPS WAN Interface Card on its branch router to leverage a 4-wire 56 kbps leased line where broadband is unavailable. By provisioning a dedicated DSU/CSU circuit, the branch achieves consistent transaction throughput, deterministic latency and carrier-grade reliability. Benefit: SLA-compliant uptime, predictable performance for core banking applications and reduced TCO compared to satellite or MPLS alternatives.
Industrial SCADA Remote Monitoring Over Low-Speed Link
An oil & gas operator integrates the Cisco WIC-1DSU-56K4-1-port 4-WIRE 56/64 KBPS WAN Interface Card into its SCADA master router to connect offshore pump stations via existing 4-wire 64 kbps circuits. This configuration delivers real-time telemetry, alarm notifications and remote configuration over a secure, low-latency channel. Benefit: 24/7 operational visibility, 30 % reduction in field service visits and deterministic data delivery for critical infrastructure control.
Secure Retail POS Payment over Dedicated DSU/CSU Link
A retail chain leverages the Cisco WIC-1DSU-56K4-1-port 4-WIRE 56/64 KBPS WAN Interface Card to connect store POS terminals to a central payment gateway via a leased 56 kbps line. The dedicated DSU/CSU link ensures 99.99 % transaction reliability, PCI-DSS compliant encryption tunneling and isolated connectivity. Benefit: uninterrupted credit-card processing, fortified data integrity and a 20 % reduction in per-store communication expenses.
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Product Comparison Table 
| WIC-1DSU-56K4 |  WIC-1AM-V2 |  WIC-1SHDSL-V3 |  WIC-BLANK-PANEL |  WIC-1ADSL | |
|---|---|---|---|---|---|
| Product Type | WAN Interface Card | WAN Module | WAN Module | Blank Panel | Network Module / Network Card |
| Module Type | DSU/CSU Module | WAN | WAN | WIC Blank Panel | WAN Module |
| Form Factor | WIC | PCIe | Modular | Modular | Modular |
| Operating Temperature | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C |
| Storage Temperature | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C |
| Compatibility | Cisco | Cisco, Juniper, Arista, Dell, HP | Cisco | Cisco Routers / Cisco Switches | Cisco |
| Product Name | Cisco WIC-1DSU-56K4 | WIC-1AM-V2 | Cisco WIC-1SHDSL-V3 | WIC-BLANK-PANEL | WIC-1ADSL |
Compliance & Warranty
100% Genuine Product Guarantee
Every unit is authentic, sourced through trusted and authorised channels, and serial-verified on request. Genuine networking and IT hardware, guaranteed, or your money back.
Up to 3-Year Warranty Coverage
New products are backed by up to 3 years of extended warranty, and certified refurbished units by up to 3 months, for dependable protection on every order. Coverage is clear, honoured in full, and confirmed on each product page.
Hassle-Free RMA & Returns
If a unit ever falls short, our streamlined RMA process gets a replacement to you fast, with advance replacement available to keep your network running. No jargon, no runaround.
Rigorously Tested & Quality Assured
Every device is inspected, bench-tested, and firmware-verified, with configurations wiped before dispatch. Additional testing can be arranged to confirm full working condition on request.
Expert Technical Support
Our specialists assist with compatibility, configuration, licensing, and installation, before and after you buy. Real hardware expertise, whenever you need it.
Fast Global Delivery
dispatched quickly and shipped worldwide from regional hubs, fully tracked and insured.
Reviews & Ratings
D
David Walker
4
The WIC-1DSU-56K4 module is a great solution for our network. It supports reliable 56K DSU connections and improves the performance of our communication system.
O
Olivia Martin
4
This module provides excellent value. The WIC-1DSU-56K4 ensures reliable data transfer for 56K DSU connections, making it a great addition to our infrastructure.
J
James Brown
5
The WIC-1DSU-56K4 works seamlessly. It supports stable 56K DSU connections and integrates well into our network, providing reliable communication.
G
Grace Scott
4
The WIC-1DSU-56K4 is reliable and easy to install. It ensures stable 56K DSU connections and has improved our network's performance.
B
Benjamin Mitchell
5
The WIC-1DSU-56K4 module provides excellent performance. It supports reliable 56K DSU connections, improving the efficiency and stability of our system.
Questions & Answers
What is the Cisco WIC-1DSU-56K4 1-port 4-wire 56/64 kbps WAN Interface Card?
The WIC-1DSU-56K4 is a Cisco WAN interface card providing a single 4-wire DSU/CSU port supporting 56 kbps and 64 kbps synchronous links for Cisco routers.
Which data rates does the WIC-1DSU-56K4 support?
It supports clear-channel synchronous data rates of 56 kbps and 64 kbps over four-wire circuits.
Which Cisco routers are compatible with the WIC-1DSU-56K4?
It is compatible with Cisco 2500, 2600, 3600 and 3700 series routers that provide a WAN Interface Card slot.
How do I install the WIC-1DSU-56K4 card?
Power off the router, insert the card into an available WIC slot, secure it with the captive screw, power on the router, and configure via IOS.
Does the WIC-1DSU-56K4 include an internal DSU/CSU?
Yes, it features an integrated DSU/CSU, eliminating the need for an external unit for digital WAN connectivity.
What cable wiring is required for four-wire operation?
Use a standard RJ-48 4-wire digital CSU cable, wiring tip and ring pairs per your carrier’s framing specifications.
Which WAN protocols are supported by the WIC-1DSU-56K4?
It supports PPP, HDLC, Frame Relay and X.25 encapsulations for versatile WAN connectivity.
Is the WIC-1DSU-56K4 hot-swappable?
No, you must power down the router before inserting or removing the card to prevent hardware damage.
How do I configure the WIC-1DSU-56K4 in Cisco IOS?
Enter interface configuration mode (interface serial slot/port), set bandwidth and encapsulation, and specify clock source as internal.
What is the power consumption of the WIC-1DSU-56K4?
The card consumes under 1 W of power during normal operation, minimizing impact on overall router power budgets.
What are the operating temperature and humidity ranges?
It operates reliably from 0 °C to 40 °C and in 10 % to 90 % non-condensing relative humidity environments.
What industry certifications does the WIC-1DSU-56K4 have?
It is certified to FCC, UL, CE and RoHS standards, ensuring global compliance and environmental safety.
What warranty covers the WIC-1DSU-56K4?
Cisco’s limited lifetime warranty covers defects in materials and workmanship for the original purchaser.
What are common use cases for the WIC-1DSU-56K4?
Typical applications include low-bandwidth leased lines, point-to-point links, dial backup circuits and remote office connectivity.
How can I verify the status and performance of the WIC-1DSU-56K4?
Use IOS commands such as 'show controllers serial' and 'show interface serial' to view line status, loss statistics and error counts.
How many 4-wire circuits does the WIC-1DSU-56K4 support?
It provides a single 4-wire circuit port designed for one dedicated digital link at 56 kbps or 64 kbps.