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WIC-1DSU-56K4
1-port 4-WIRE 56/64 KBPS WAN INTERFACE CARD
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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.
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.
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.
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.
To get the detailed certification, please go to the Compliance Center.
| 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 |
| Data Rate | 56Kbps | 1Gbps | 2Mbps | N/A | Downstream: 8 Mbps, Upstream: 1 Mbps |
| Connector Type | RJ-11 | RJ-45 | RJ-45 | N/A | RJ-11 |
| Supported Protocols | PPP / HDLC | TCP/IP, iSCSI | PPP, HDLC | N/A | TCP/IP, ADSL |
| 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 |
| Input Voltage | 5V | 3.3V | 3.3V | N/A | 3.3V |
| Compatibility | Cisco | Cisco, Juniper, Arista, Dell, HP | Cisco | Cisco Routers / Cisco Switches | Cisco |
| Max Speed | 56Kbps | 1Gbps | 2Mbps | N/A | N/A |
| Supported Features | DSU/CSU functionality | Auto-negotiation, Wake-on-LAN, Jumbo Frames, QoS | Auto-negotiation | Slot Filling, Airflow Management | N/A |
| Power Consumption | N/A | 5W | N/A | N/A | N/A |
| Interface Ports | Analog RJ-11 | Ethernet | RJ-45 | N/A | RJ-11 |
| Expansion Slots | WIC Slot | N/A | N/A | N/A | WIC |
| Product Name | Cisco WIC-1DSU-56K4 | WIC-1AM-V2 | Cisco WIC-1SHDSL-V3 | WIC-BLANK-PANEL | WIC-1ADSL |
| Height | N/A | 1.0 inches | N/A | N/A | N/A |
| Width | N/A | 3.5 inches | N/A | N/A | N/A |
| Depth | N/A | 0.5 inches | N/A | N/A | N/A |
| Weight | N/A | 0.5 lbs | N/A | N/A | N/A |
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.
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.
The WIC-1DSU-56K4 works seamlessly. It supports stable 56K DSU connections and integrates well into our network, providing reliable communication.
The WIC-1DSU-56K4 is reliable and easy to install. It ensures stable 56K DSU connections and has improved our network's performance.
The WIC-1DSU-56K4 module provides excellent performance. It supports reliable 56K DSU connections, improving the efficiency and stability of our system.
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.
It supports clear-channel synchronous data rates of 56 kbps and 64 kbps over four-wire circuits.
It is compatible with Cisco 2500, 2600, 3600 and 3700 series routers that provide a WAN Interface Card slot.
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.
Yes, it features an integrated DSU/CSU, eliminating the need for an external unit for digital WAN connectivity.
Use a standard RJ-48 4-wire digital CSU cable, wiring tip and ring pairs per your carrier’s framing specifications.
It supports PPP, HDLC, Frame Relay and X.25 encapsulations for versatile WAN connectivity.
No, you must power down the router before inserting or removing the card to prevent hardware damage.
Enter interface configuration mode (interface serial slot/port), set bandwidth and encapsulation, and specify clock source as internal.
The card consumes under 1 W of power during normal operation, minimizing impact on overall router power budgets.
It operates reliably from 0 °C to 40 °C and in 10 % to 90 % non-condensing relative humidity environments.
It is certified to FCC, UL, CE and RoHS standards, ensuring global compliance and environmental safety.
Cisco’s limited lifetime warranty covers defects in materials and workmanship for the original purchaser.
Typical applications include low-bandwidth leased lines, point-to-point links, dial backup circuits and remote office connectivity.
Use IOS commands such as 'show controllers serial' and 'show interface serial' to view line status, loss statistics and error counts.
It provides a single 4-wire circuit port designed for one dedicated digital link at 56 kbps or 64 kbps.